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Track the adoption of Swift 6 strict concurrency checks for data race safety. How many packages are Ready for Swift 6?

Build Information

Failed to build Futures with Swift 5.10 for macOS (SPM).

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.39.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/dfunckt/swift-futures.git
Reference: master
Initialized empty Git repository in /Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/.git/
From https://github.com/dfunckt/swift-futures
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 518a3fd Update for swiftformat 0.47.2
Cloned https://github.com/dfunckt/swift-futures.git
Revision (git rev-parse @):
518a3fddab9feb068391e10302d44181e3653979
SUCCESS checkout https://github.com/dfunckt/swift-futures.git at master
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/.resolve-product-dependencies",
  "dependencies": [
    {
      "identity": "swift-futures",
      "name": "Futures",
      "url": "https://github.com/dfunckt/swift-futures.git",
      "version": "unspecified",
      "path": "/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-futures",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/dfunckt/swift-futures.git
[1/1569] Fetching swift-futures
Fetched https://github.com/dfunckt/swift-futures.git from cache (0.32s)
Creating working copy for https://github.com/dfunckt/swift-futures.git
Working copy of https://github.com/dfunckt/swift-futures.git resolved at master (518a3fd)
warning: '.resolve-product-dependencies': dependency 'swift-futures' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             5.10
Building package at path:  $workDir
https://github.com/dfunckt/swift-futures.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun swift build --arch arm64
Building for debugging...
[0/5] Write sources
[3/5] Compiling FuturesPrivate Private.c
[4/5] Write swift-version-6044DDE57671499D.txt
[6/27] Compiling FuturesSync Backoff.swift
[7/27] Compiling FuturesSync Locking.swift
[8/27] Compiling FuturesSync PosixConditionLock.swift
[9/30] Compiling FuturesSync AtomicQueue.swift
[10/30] Compiling FuturesSync AtomicBuffer.swift
[11/30] Compiling FuturesSync AtomicList.swift
[12/30] Compiling FuturesSync AtomicSPSCQueue.swift
[13/30] Compiling FuturesSync AtomicUnboundedMPSCQueue.swift
[14/30] Compiling FuturesSync AtomicUnboundedSPSCQueue.swift
[15/30] Compiling FuturesSync AtomicMPMCQueue.swift
[16/30] Compiling FuturesSync AtomicMPSCQueue.swift
[17/30] Compiling FuturesSync AtomicSPMCQueue.swift
[18/30] Compiling FuturesSync PosixLock.swift
[19/30] Compiling FuturesSync SpinLock.swift
[20/30] Compiling FuturesSync UnfairLock.swift
[21/30] Compiling FuturesSync Atomic.swift
[22/30] Compiling FuturesSync AtomicBitset.swift
[23/30] Compiling FuturesSync AtomicEnum.swift
[24/30] Compiling FuturesSync Mutex.swift
[25/30] Compiling FuturesSync Private.swift
[26/30] Compiling FuturesSync Thread.swift
[27/30] Compiling FuturesSync AtomicPointer.swift
[28/30] Compiling FuturesSync AtomicReference.swift
[29/30] Compiling FuturesSync AtomicValue.swift
[30/30] Emitting module FuturesSync
[31/157] Compiling Futures FlattenStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[32/157] Compiling Futures ForEachStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[33/157] Compiling Futures GenerateStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[34/157] Compiling Futures HandleEventsStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[35/157] Compiling Futures JoinStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[36/157] Compiling Futures JustStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[37/157] Compiling Futures LatestStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[38/157] Compiling Futures LazyStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[39/157] Compiling Futures MapKeyPathStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[40/157] Compiling Futures MapResultStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[41/157] Compiling Futures MapStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[42/157] Compiling Futures MatchEitherStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[43/157] Compiling Futures MatchOptionalStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[44/157] Compiling Futures MatchResultStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[45/157] Compiling Futures MergeAllStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[46/157] Compiling Futures MergeStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[47/157] Compiling Futures MulticastStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[48/157] Compiling Futures NeverStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[49/175] Compiling Futures MatchOptionalFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[50/175] Compiling Futures MatchResultFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[51/175] Compiling Futures NeverFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[52/175] Compiling Futures PeekFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[53/175] Compiling Futures PollOnFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[54/175] Compiling Futures PrintFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[55/175] Compiling Futures ReadyFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[56/175] Compiling Futures ReferenceFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[57/175] Compiling Futures ReplaceErrorFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[58/175] Compiling Futures ReplaceOutputFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[59/175] Compiling Futures SelectAnyFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[60/175] Compiling Futures SelectFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[61/175] Compiling Futures SetFailureTypeFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[62/175] Compiling Futures ThenFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[63/175] Compiling Futures TryLazyFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[64/175] Compiling Futures TryMapFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[65/175] Compiling Futures AdaptiveQueue.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[66/175] Compiling Futures CircularBuffer.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[67/175] Compiling Futures OptionalStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[68/175] Compiling Futures OutputStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[69/175] Compiling Futures PollOnStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[70/175] Compiling Futures PrefixStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[71/175] Compiling Futures PrefixUntilOutputStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[72/175] Compiling Futures PrefixWhileStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[73/175] Compiling Futures PrintStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[74/175] Compiling Futures ReferenceStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[75/175] Compiling Futures RemoveDuplicatesStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[76/175] Compiling Futures RepeatStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[77/175] Compiling Futures ReplaceEmptyStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[78/175] Compiling Futures ReplaceErrorStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[79/175] Compiling Futures ScanStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[80/175] Compiling Futures SequenceStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[81/175] Compiling Futures SetFailureTypeStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[82/175] Compiling Futures ShareStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[83/175] Compiling Futures StreamAllSatisfyFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[84/175] Compiling Futures StreamContainsFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:25: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0.mapError { $0 as! Failure }
                        ^
[85/175] Compiling Futures Future.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[86/175] Compiling Futures AbortFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[87/175] Compiling Futures AssertNoErrorFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[88/175] Compiling Futures BreakpointFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[89/175] Compiling Futures CatchErrorFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[90/175] Compiling Futures FlatMapFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[91/175] Compiling Futures FlattenFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[92/175] Compiling Futures FlattenResultFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[93/175] Compiling Futures FutureStream.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[94/175] Compiling Futures HandleEventsFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[95/175] Compiling Futures IgnoreOutputFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[96/175] Compiling Futures JoinAllFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[97/175] Compiling Futures JoinFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[98/175] Compiling Futures LazyFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[99/175] Compiling Futures MapFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[100/175] Compiling Futures MapKeyPathFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[101/175] Compiling Futures MapResultFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[102/175] Compiling Futures MatchEitherFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
error: emit-module command failed with exit code 1 (use -v to see invocation)
[103/175] Emitting module Futures
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/FlattenFuture.swift:17:20: error: cannot convert value of type 'Base.Output.FutureType' to closure result type 'Base.Output'
                $0.makeFuture()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/FlattenStream.swift:17:20: error: cannot convert value of type 'Base.Output.StreamType' to closure result type 'Base.Output'
                $0.makeStream()
                ~~~^~~~~~~~~~~~
                                as! Base.Output
[104/175] Compiling Futures SinkSendFuture.swift
[105/175] Compiling Futures Stream.swift
[106/175] Compiling Futures AbortStream.swift
[107/175] Compiling Futures AssertNoErrorStream.swift
[108/175] Compiling Futures BreakpointStream.swift
[109/175] Compiling Futures BufferStream.swift
[110/175] Compiling Futures CatchErrorStream.swift
[111/175] Compiling Futures CompactMapStream.swift
[112/175] Compiling Futures CompleteOnErrorStream.swift
[113/175] Compiling Futures ConcatenateStream.swift
[114/175] Compiling Futures DropStream.swift
[115/175] Compiling Futures DropUntilOutputStream.swift
[116/175] Compiling Futures DropWhileStream.swift
[117/175] Compiling Futures EmptyStream.swift
[118/175] Compiling Futures EnumerateStream.swift
[119/175] Compiling Futures FilterStream.swift
[120/175] Compiling Futures FlatMapStream.swift
[121/175] Compiling Futures FlattenResultStream.swift
[122/175] Compiling Futures Private.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[123/175] Compiling Futures TaskRunner.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[124/175] Compiling Futures TaskScheduler.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[125/175] Compiling Futures Poll.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[126/175] Compiling Futures Promise.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[127/175] Compiling Futures Result.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[128/175] Compiling Futures Sink.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[129/175] Compiling Futures AssertNoErrorSink.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[130/175] Compiling Futures BlockingSink.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[131/175] Compiling Futures BufferSink.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[132/175] Compiling Futures CollectSink.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[133/175] Compiling Futures FlatMapInputSink.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[134/175] Compiling Futures MapErrorSink.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[135/175] Compiling Futures MapInputSink.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[136/175] Compiling Futures SetFailureTypeSink.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[137/175] Compiling Futures SinkCloseFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[138/175] Compiling Futures SinkFlushFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[139/175] Compiling Futures SinkSendAllFuture.swift
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:24:56: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollSend(&context, item).mapError {
                                                       ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:32:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:31:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollFlush(&context).mapError {
                                                  ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:39:13: warning: will never be executed
            .failure(.failure($0 as! Failure)) // swiftlint:disable:this force_cast
            ^
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:38:51: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
        return _base.pollClose(&context).mapError {
                                                  ^
[140/175] Compiling Futures Cancellable.swift
[141/175] Compiling Futures Channel.swift
[142/175] Compiling Futures ChannelImpl.swift
[143/175] Compiling Futures ChannelMPSCBufferBounded.swift
[144/175] Compiling Futures ChannelMPSCBufferUnbounded.swift
[145/175] Compiling Futures ChannelMPSCPark.swift
[146/175] Compiling Futures ChannelSPSCBufferBounded.swift
[147/175] Compiling Futures ChannelSPSCBufferUnbounded.swift
[148/175] Compiling Futures ChannelSPSCPark.swift
[149/175] Compiling Futures ChannelSlotBounded.swift
[150/175] Compiling Futures ChannelSlotUnbounded.swift
[151/175] Compiling Futures Context.swift
[152/175] Compiling Futures Either.swift
[153/175] Compiling Futures Executor.swift
[154/175] Compiling Futures QueueExecutor.swift
[155/175] Compiling Futures RunLoopExecutor.swift
[156/175] Compiling Futures ThreadExecutor.swift
[157/175] Compiling Futures Extensions.swift
[158/175] Compiling Futures StreamContainsWhereFuture.swift
[159/175] Compiling Futures StreamFirstFuture.swift
[160/175] Compiling Futures StreamFirstWhereFuture.swift
[161/175] Compiling Futures StreamForwardFuture.swift
[162/175] Compiling Futures StreamFuture.swift
[163/175] Compiling Futures StreamIgnoreOutputFuture.swift
[164/175] Compiling Futures StreamLastFuture.swift
[165/175] Compiling Futures StreamLastWhereFuture.swift
[166/175] Compiling Futures StreamReduceFuture.swift
[167/175] Compiling Futures StreamReduceIntoFuture.swift
[168/175] Compiling Futures StreamReplayBuffer.swift
[169/175] Compiling Futures SwitchToLatestStream.swift
[170/175] Compiling Futures TryMapStream.swift
[171/175] Compiling Futures UnfoldStream.swift
[172/175] Compiling Futures YieldStream.swift
[173/175] Compiling Futures ZipStream.swift
[174/175] Compiling Futures Task.swift
[175/175] Compiling Futures Waker.swift
error: fatalError
BUILD FAILURE 5.10 macosSpm
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