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Build Information

Failed to build Futures with Swift 5.9 for Linux.

Build Command

docker run --rm -v "checkouts-4609320-0":/host -w "/host/spi-builder-workspace" registry.gitlab.com/finestructure/spi-images:basic-5.9-latest swift build 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.19.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/dfunckt/swift-futures.git
Reference: master
Cloned https://github.com/dfunckt/swift-futures.git into spi-builder-workspace
SUCCESS checkout https://github.com/dfunckt/swift-futures.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             5.9
Building package at path:  spi-builder-workspace
Running build ...
docker run --rm -v "checkouts-4609320-0":/host -w "/host/spi-builder-workspace" registry.gitlab.com/finestructure/spi-images:basic-5.9-latest swift build 2>&1
Building for debugging...
[0/1] Compiling FuturesPrivate Private.c
[2/23] Compiling FuturesSync AtomicMPMCQueue.swift
[3/23] Compiling FuturesSync AtomicMPSCQueue.swift
[4/23] Compiling FuturesSync AtomicSPMCQueue.swift
[5/26] Compiling FuturesSync AtomicSPSCQueue.swift
[6/26] Compiling FuturesSync AtomicUnboundedMPSCQueue.swift
[7/26] Compiling FuturesSync AtomicUnboundedSPSCQueue.swift
[8/26] Compiling FuturesSync AtomicQueue.swift
[9/26] Compiling FuturesSync AtomicBuffer.swift
[10/26] Compiling FuturesSync AtomicList.swift
[11/26] Compiling FuturesSync Atomic.swift
[12/26] Compiling FuturesSync AtomicBitset.swift
[13/26] Compiling FuturesSync AtomicEnum.swift
[14/26] Emitting module FuturesSync
[15/26] Compiling FuturesSync Mutex.swift
[16/26] Compiling FuturesSync Private.swift
[17/26] Compiling FuturesSync Thread.swift
[18/26] Compiling FuturesSync AtomicPointer.swift
[19/26] Compiling FuturesSync AtomicReference.swift
[20/26] Compiling FuturesSync AtomicValue.swift
[21/26] Compiling FuturesSync Backoff.swift
[22/26] Compiling FuturesSync Locking.swift
[23/26] Compiling FuturesSync PosixConditionLock.swift
[24/26] Compiling FuturesSync PosixLock.swift
[25/26] Compiling FuturesSync SpinLock.swift
[26/26] Compiling FuturesSync UnfairLock.swift
[29/155] Compiling Futures FlattenStream.swift
/host/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
[30/155] Compiling Futures ForEachStream.swift
/host/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
[31/155] Compiling Futures GenerateStream.swift
/host/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
[32/155] Compiling Futures HandleEventsStream.swift
/host/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
[33/155] Compiling Futures JoinStream.swift
/host/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
[34/155] Compiling Futures JustStream.swift
/host/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
[35/155] Compiling Futures LatestStream.swift
/host/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
[36/155] Compiling Futures LazyStream.swift
/host/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
[37/155] Compiling Futures MapKeyPathStream.swift
/host/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
[38/155] Compiling Futures MapResultStream.swift
/host/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
[39/155] Compiling Futures MapStream.swift
/host/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
[40/155] Compiling Futures MatchEitherStream.swift
/host/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
[41/155] Compiling Futures MatchOptionalStream.swift
/host/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
[42/155] Compiling Futures MatchResultStream.swift
/host/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
[43/155] Compiling Futures MergeAllStream.swift
/host/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
[44/155] Compiling Futures MergeStream.swift
/host/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
[45/155] Compiling Futures MulticastStream.swift
/host/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
[46/155] Compiling Futures NeverStream.swift
/host/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
[47/173] Compiling Futures MatchOptionalFuture.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[48/173] Compiling Futures MatchResultFuture.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[49/173] Compiling Futures NeverFuture.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[50/173] Compiling Futures PeekFuture.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[51/173] Compiling Futures PollOnFuture.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[52/173] Compiling Futures PrintFuture.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[53/173] Compiling Futures ReadyFuture.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[54/173] Compiling Futures ReferenceFuture.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[55/173] Compiling Futures ReplaceErrorFuture.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[56/173] Compiling Futures ReplaceOutputFuture.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[57/173] Compiling Futures SelectAnyFuture.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[58/173] Compiling Futures SelectFuture.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[59/173] Compiling Futures SetFailureTypeFuture.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[60/173] Compiling Futures ThenFuture.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[61/173] Compiling Futures TryLazyFuture.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[62/173] Compiling Futures TryMapFuture.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[63/173] Compiling Futures AdaptiveQueue.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[64/173] Compiling Futures CircularBuffer.swift
/host/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
error: emit-module command failed with exit code 1 (use -v to see invocation)
[65/173] Emitting module Futures
/host/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
/host/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
[66/173] Compiling Futures OptionalStream.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[67/173] Compiling Futures OutputStream.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[68/173] Compiling Futures PollOnStream.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[69/173] Compiling Futures PrefixStream.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[70/173] Compiling Futures PrefixUntilOutputStream.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[71/173] Compiling Futures PrefixWhileStream.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[72/173] Compiling Futures PrintStream.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[73/173] Compiling Futures ReferenceStream.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[74/173] Compiling Futures RemoveDuplicatesStream.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[75/173] Compiling Futures RepeatStream.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[76/173] Compiling Futures ReplaceEmptyStream.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[77/173] Compiling Futures ReplaceErrorStream.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[78/173] Compiling Futures ScanStream.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[79/173] Compiling Futures SequenceStream.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[80/173] Compiling Futures SetFailureTypeStream.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[81/173] Compiling Futures ShareStream.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[82/173] Compiling Futures StreamAllSatisfyFuture.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[83/173] Compiling Futures StreamContainsFuture.swift
/host/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:27: warning: will never be executed
            $0.mapError { $0 as! Failure }
                          ^
/host/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 }
                        ^
[84/173] Compiling Futures SinkSendFuture.swift
[85/173] Compiling Futures Stream.swift
[86/173] Compiling Futures AbortStream.swift
[87/173] Compiling Futures AssertNoErrorStream.swift
[88/173] Compiling Futures BreakpointStream.swift
[89/173] Compiling Futures BufferStream.swift
[90/173] Compiling Futures CatchErrorStream.swift
[91/173] Compiling Futures CompactMapStream.swift
[92/173] Compiling Futures CompleteOnErrorStream.swift
[93/173] Compiling Futures ConcatenateStream.swift
[94/173] Compiling Futures DropStream.swift
[95/173] Compiling Futures DropUntilOutputStream.swift
[96/173] Compiling Futures DropWhileStream.swift
[97/173] Compiling Futures EmptyStream.swift
[98/173] Compiling Futures EnumerateStream.swift
[99/173] Compiling Futures FilterStream.swift
[100/173] Compiling Futures FlatMapStream.swift
[101/173] Compiling Futures FlattenResultStream.swift
[102/173] Compiling Futures Future.swift
/host/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
[103/173] Compiling Futures AbortFuture.swift
/host/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
[104/173] Compiling Futures AssertNoErrorFuture.swift
/host/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
[105/173] Compiling Futures BreakpointFuture.swift
/host/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
[106/173] Compiling Futures CatchErrorFuture.swift
/host/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
[107/173] Compiling Futures FlatMapFuture.swift
/host/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
[108/173] Compiling Futures FlattenFuture.swift
/host/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
[109/173] Compiling Futures FlattenResultFuture.swift
/host/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
[110/173] Compiling Futures FutureStream.swift
/host/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
[111/173] Compiling Futures HandleEventsFuture.swift
/host/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
[112/173] Compiling Futures IgnoreOutputFuture.swift
/host/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
[113/173] Compiling Futures JoinAllFuture.swift
/host/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
[114/173] Compiling Futures JoinFuture.swift
/host/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
[115/173] Compiling Futures LazyFuture.swift
/host/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
[116/173] Compiling Futures MapFuture.swift
/host/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
[117/173] Compiling Futures MapKeyPathFuture.swift
/host/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
[118/173] Compiling Futures MapResultFuture.swift
/host/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
[119/173] Compiling Futures MatchEitherFuture.swift
/host/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
[120/173] Compiling Futures Private.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[121/173] Compiling Futures TaskRunner.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[122/173] Compiling Futures TaskScheduler.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[123/173] Compiling Futures Poll.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[124/173] Compiling Futures Promise.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[125/173] Compiling Futures Result.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[126/173] Compiling Futures Sink.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[127/173] Compiling Futures AssertNoErrorSink.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[128/173] Compiling Futures BlockingSink.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[129/173] Compiling Futures BufferSink.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[130/173] Compiling Futures CollectSink.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[131/173] Compiling Futures FlatMapInputSink.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[132/173] Compiling Futures MapErrorSink.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[133/173] Compiling Futures MapInputSink.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[134/173] Compiling Futures SetFailureTypeSink.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[135/173] Compiling Futures SinkCloseFuture.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[136/173] Compiling Futures SinkFlushFuture.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[137/173] Compiling Futures SinkSendAllFuture.swift
/host/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
            ^
/host/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 {
                                                       ^
/host/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
            ^
/host/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 {
                                                  ^
/host/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
            ^
/host/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 {
                                                  ^
[138/173] Compiling Futures Cancellable.swift
[139/173] Compiling Futures Channel.swift
[140/173] Compiling Futures ChannelImpl.swift
[141/173] Compiling Futures ChannelMPSCBufferBounded.swift
[142/173] Compiling Futures ChannelMPSCBufferUnbounded.swift
[143/173] Compiling Futures ChannelMPSCPark.swift
[144/173] Compiling Futures ChannelSPSCBufferBounded.swift
[145/173] Compiling Futures ChannelSPSCBufferUnbounded.swift
[146/173] Compiling Futures ChannelSPSCPark.swift
[147/173] Compiling Futures ChannelSlotBounded.swift
[148/173] Compiling Futures ChannelSlotUnbounded.swift
[149/173] Compiling Futures Context.swift
[150/173] Compiling Futures Either.swift
[151/173] Compiling Futures Executor.swift
[152/173] Compiling Futures QueueExecutor.swift
[153/173] Compiling Futures RunLoopExecutor.swift
[154/173] Compiling Futures ThreadExecutor.swift
[155/173] Compiling Futures Extensions.swift
[156/173] Compiling Futures StreamContainsWhereFuture.swift
[157/173] Compiling Futures StreamFirstFuture.swift
[158/173] Compiling Futures StreamFirstWhereFuture.swift
[159/173] Compiling Futures StreamForwardFuture.swift
[160/173] Compiling Futures StreamFuture.swift
[161/173] Compiling Futures StreamIgnoreOutputFuture.swift
[162/173] Compiling Futures StreamLastFuture.swift
[163/173] Compiling Futures StreamLastWhereFuture.swift
[164/173] Compiling Futures StreamReduceFuture.swift
[165/173] Compiling Futures StreamReduceIntoFuture.swift
[166/173] Compiling Futures StreamReplayBuffer.swift
[167/173] Compiling Futures SwitchToLatestStream.swift
[168/173] Compiling Futures TryMapStream.swift
[169/173] Compiling Futures UnfoldStream.swift
[170/173] Compiling Futures YieldStream.swift
[171/173] Compiling Futures ZipStream.swift
[172/173] Compiling Futures Task.swift
[173/173] Compiling Futures Waker.swift
error: fatalError
BUILD FAILURE 5.9 linux

Build Machine: Linux 2