The Swift Package Index logo.Swift Package Index

Build Information

Successful build of Futures with Swift 5.9 for macOS (SPM).

Build Command

env DEVELOPER_DIR="/Applications/Xcode-15.0.0-Beta.app" xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.19.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/dfunckt/swift-futures.git
Reference: 0.1.2
Initialized empty Git repository in /Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/.git/
From https://github.com/dfunckt/swift-futures
 * tag               0.1.2      -> FETCH_HEAD
HEAD is now at 374088d Revert "Simplify ReadyQueue node implementation"
Cloned https://github.com/dfunckt/swift-futures.git into spi-builder-workspace
374088daeb749d19b89f81955984e2230bcbeaad
SUCCESS checkout https://github.com/dfunckt/swift-futures.git at 0.1.2
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             5.9
Building package at path:  spi-builder-workspace
Running build ...
env DEVELOPER_DIR="/Applications/Xcode-15.0.0-Beta.app" xcrun swift build --arch arm64
Building ... (attempt 1)
Building for debugging...
[0/1] Compiling FuturesPrivate Private.c
[2/18] Compiling FuturesSync Backoff.swift
[3/18] Compiling FuturesSync Locking.swift
[4/18] Compiling FuturesSync AtomicMPSCQueue.swift
[5/18] Compiling FuturesSync AtomicQueueBuffer.swift
[6/20] Compiling FuturesSync AtomicUnboundedMPSCQueue.swift
[7/20] Compiling FuturesSync AtomicUnboundedSPSCQueue.swift
[8/20] Compiling FuturesSync PosixLock.swift
[9/20] Compiling FuturesSync SpinLock.swift
[10/20] Compiling FuturesSync AtomicSPMCQueue.swift
[11/20] Compiling FuturesSync AtomicSPSCQueue.swift
[12/20] Compiling FuturesSync Atomic.swift
[13/20] Compiling FuturesSync AtomicEnum.swift
[14/20] Compiling FuturesSync AtomicRef.swift
[15/20] Compiling FuturesSync AtomicValue.swift
[16/20] Compiling FuturesSync AtomicQueue.swift
[17/20] Compiling FuturesSync AtomicMPMCQueue.swift
[18/20] Emitting module FuturesSync
[19/20] Compiling FuturesSync UnfairLock.swift
[20/20] Compiling FuturesSync Private.swift
[21/152] Compiling Futures AssertNoErrorFuture.swift
[22/152] Compiling Futures BreakpointFuture.swift
[23/152] Compiling Futures CatchErrorFuture.swift
[24/152] Compiling Futures FlatMapFuture.swift
[25/152] Compiling Futures FlattenFuture.swift
[26/152] Compiling Futures FlattenResultFuture.swift
[27/152] Compiling Futures FutureStream.swift
[28/152] Compiling Futures HandleEventsFuture.swift
[29/152] Compiling Futures IgnoreOutputFuture.swift
[30/152] Compiling Futures JoinAllFuture.swift
[31/152] Compiling Futures JoinFuture+Arity.swift
[32/152] Compiling Futures JoinFuture.swift
[33/152] Compiling Futures LazyFuture.swift
[34/152] Compiling Futures MapFuture.swift
[35/152] Compiling Futures MapKeyPathFuture+Arity.swift
[36/152] Compiling Futures MapKeyPathFuture.swift
[37/152] Compiling Futures MapResultFuture.swift
[38/152] Compiling Futures MatchEitherFuture.swift
[39/152] Compiling Futures MatchOptionalFuture.swift
[40/170] Compiling Futures MatchResultFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[41/170] Compiling Futures NeverFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[42/170] Compiling Futures PeekFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[43/170] Compiling Futures PollOnFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[44/170] Compiling Futures PrintFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[45/170] Compiling Futures ReadyFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[46/170] Compiling Futures ReferenceFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[47/170] Compiling Futures ReplaceErrorFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[48/170] Compiling Futures ReplaceOutputFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[49/170] Compiling Futures SelectAnyFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[50/170] Compiling Futures SelectFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[51/170] Compiling Futures SetFailureTypeFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[52/170] Compiling Futures ThenFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[53/170] Compiling Futures TryLazyFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[54/170] Compiling Futures TryMapFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[55/170] Compiling Futures AdaptiveQueue.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[56/170] Compiling Futures AtomicWaker.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[57/170] Compiling Futures CircularBuffer.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[58/170] Compiling Futures Private.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[59/170] Compiling Futures NeverStream.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[60/170] Compiling Futures OptionalStream.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[61/170] Compiling Futures OutputStream.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[62/170] Compiling Futures PollOnStream.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[63/170] Compiling Futures PrefixStream.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[64/170] Compiling Futures PrefixUntilOutputStream.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[65/170] Compiling Futures PrefixWhileStream.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[66/170] Compiling Futures PrintStream.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[67/170] Compiling Futures ReferenceStream.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[68/170] Compiling Futures RemoveDuplicatesStream.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[69/170] Compiling Futures RepeatStream.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[70/170] Compiling Futures ReplaceEmptyStream.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[71/170] Compiling Futures ReplaceErrorStream.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[72/170] Compiling Futures ScanStream.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[73/170] Compiling Futures SequenceStream.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[74/170] Compiling Futures SetFailureTypeStream.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[75/170] Compiling Futures ShareStream.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[76/170] Compiling Futures StreamAllSatisfyFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[77/170] Compiling Futures Cancellable.swift
[78/170] Compiling Futures Channel.swift
[79/170] Compiling Futures ChannelImpl.swift
[80/170] Compiling Futures ChannelMPSCBufferBounded.swift
[81/170] Compiling Futures ChannelMPSCBufferUnbounded.swift
[82/170] Compiling Futures ChannelMPSCPark.swift
[83/170] Compiling Futures ChannelSPSCBufferBounded.swift
[84/170] Compiling Futures ChannelSPSCBufferUnbounded.swift
[85/170] Compiling Futures ChannelSPSCPark.swift
[86/170] Compiling Futures ChannelSlotBounded.swift
[87/170] Compiling Futures ChannelSlotUnbounded.swift
[88/170] Compiling Futures Either.swift
[89/170] Compiling Futures Executor.swift
[90/170] Compiling Futures QueueExecutor.swift
[91/170] Compiling Futures RunLoopExecutor.swift
[92/170] Compiling Futures ThreadExecutor.swift
[93/170] Compiling Futures Extensions.swift
[94/170] Compiling Futures Future.swift
[95/170] Compiling Futures AbortFuture.swift
[96/170] Compiling Futures Stream.swift
[97/170] Compiling Futures AbortStream.swift
[98/170] Compiling Futures AssertNoErrorStream.swift
[99/170] Compiling Futures BreakpointStream.swift
[100/170] Compiling Futures BufferStream.swift
[101/170] Compiling Futures CatchErrorStream.swift
[102/170] Compiling Futures CompactMapStream.swift
[103/170] Compiling Futures CompleteOnErrorStream.swift
[104/170] Compiling Futures ConcatenateStream.swift
[105/170] Compiling Futures DropStream.swift
[106/170] Compiling Futures DropUntilOutputStream.swift
[107/170] Compiling Futures DropWhileStream.swift
[108/170] Compiling Futures EmptyStream.swift
[109/170] Compiling Futures EnumerateStream.swift
[110/170] Compiling Futures FilterStream.swift
[111/170] Compiling Futures FlatMapStream.swift
[112/170] Compiling Futures FlattenResultStream.swift
[113/170] Compiling Futures FlattenStream.swift
[114/170] Compiling Futures ForEachStream.swift
[115/170] Emitting module Futures
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: warning: static property 'waiting' produces an empty option set
        static let waiting = State(rawValue: 0)
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Internal/AtomicWaker.swift:20:20: note: use [] to silence this warning
        static let waiting = State(rawValue: 0)
                   ^              ~~~~~~~~~~~~~
                                  ([])
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Future/SetFailureTypeFuture.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:41: warning: will never be executed
            $0._makeResult().mapError { $0 as! Failure }
                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Stream/SetFailureTypeStream.swift:35:39: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
            $0._makeResult().mapError { $0 as! Failure }
                                      ^
[116/170] Compiling Futures TaskRunner.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[117/170] Compiling Futures TaskScheduler.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[118/170] Compiling Futures ThreadLocal.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[119/170] Compiling Futures Poll.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[120/170] Compiling Futures Promise.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[121/170] Compiling Futures Result.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[122/170] Compiling Futures Sink.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[123/170] Compiling Futures AssertNoErrorSink.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[124/170] Compiling Futures BlockingSink.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[125/170] Compiling Futures BufferSink.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[126/170] Compiling Futures CollectSink.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[127/170] Compiling Futures FlatMapSink.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[128/170] Compiling Futures MapErrorSink.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[129/170] Compiling Futures MapSink.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[130/170] Compiling Futures SetFailureTypeSink.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[131/170] Compiling Futures SinkCloseFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[132/170] Compiling Futures SinkFlushFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[133/170] Compiling Futures SinkSendAllFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[134/170] Compiling Futures SinkSendFuture.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:25:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:35:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:35: warning: will never be executed
                    $0.mapError { $0 as! Failure }
                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Futures/Sink/SetFailureTypeSink.swift:45:33: note: '$0' is of type 'Never' which cannot be constructed because it is an enum with no cases
                    $0.mapError { $0 as! Failure }
                                ^
[135/170] Compiling Futures GenerateStream.swift
[136/170] Compiling Futures HandleEventsStream.swift
[137/170] Compiling Futures JoinStream+Arity.swift
[138/170] Compiling Futures JoinStream.swift
[139/170] Compiling Futures JustStream.swift
[140/170] Compiling Futures LatestStream.swift
[141/170] Compiling Futures LazyStream.swift
[142/170] Compiling Futures MapKeyPathStream+Arity.swift
[143/170] Compiling Futures MapKeyPathStream.swift
[144/170] Compiling Futures MapResultStream.swift
[145/170] Compiling Futures MapStream.swift
[146/170] Compiling Futures MatchEitherStream.swift
[147/170] Compiling Futures MatchOptionalStream.swift
[148/170] Compiling Futures MatchResultStream.swift
[149/170] Compiling Futures MergeAllStream.swift
[150/170] Compiling Futures MergeStream+Arity.swift
[151/170] Compiling Futures MergeStream.swift
[152/170] Compiling Futures MulticastStream.swift
[153/170] Compiling Futures StreamContainsFuture.swift
[154/170] Compiling Futures StreamContainsWhereFuture.swift
[155/170] Compiling Futures StreamFirstFuture.swift
[156/170] Compiling Futures StreamFirstWhereFuture.swift
[157/170] Compiling Futures StreamForwardFuture.swift
[158/170] Compiling Futures StreamFuture.swift
[159/170] Compiling Futures StreamLastFuture.swift
[160/170] Compiling Futures StreamLastWhereFuture.swift
[161/170] Compiling Futures StreamReduceFuture.swift
[162/170] Compiling Futures StreamReduceIntoFuture.swift
[163/170] Compiling Futures StreamReplayBuffer.swift
[164/170] Compiling Futures SwitchToLatestStream.swift
[165/170] Compiling Futures TryMapStream.swift
[166/170] Compiling Futures UnfoldStream.swift
[167/170] Compiling Futures YieldStream.swift
[168/170] Compiling Futures ZipStream+Arity.swift
[169/170] Compiling Futures ZipStream.swift
[170/170] Compiling Futures Task.swift
[171/177] Compiling FuturesTestSupport TestError.swift
[172/177] Compiling FuturesTestSupport Stream.swift
[173/177] Compiling FuturesTestSupport Module.swift
[174/177] Emitting module FuturesTestSupport
[175/177] Compiling FuturesTestSupport TestCase.swift
[176/177] Compiling FuturesTestSupport Assert.swift
[177/177] Compiling FuturesTestSupport Future.swift
Build complete! (12.67s)
Build complete.
Done.

Build Machine: Mac 5