Swift Package Index

Build Information

Failed to build AsyncNinja with Swift 5.9 for Linux.

Build Command

docker run --rm -v "checkouts-4609320-1":/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/AsyncNinja/AsyncNinja.git
Reference: 1.4.0
Cloned https://github.com/AsyncNinja/AsyncNinja.git into spi-builder-workspace
SUCCESS checkout https://github.com/AsyncNinja/AsyncNinja.git at 1.4.0
========================================
Build
========================================
Selected platform:         linux
Swift version:             5.9
Building package at path:  spi-builder-workspace
Running build ...
docker run --rm -v "checkouts-4609320-1":/host -w "/host/spi-builder-workspace" registry.gitlab.com/finestructure/spi-images:basic-5.9-latest swift build 2>&1
Building for debugging...
error: emit-module command failed with exit code 1 (use -v to see invocation)
[1/58] Emitting module AsyncNinja
/host/spi-builder-workspace/Sources/Util.swift:53:34: error: cannot find type 'DateFormatter' in scope
  static let debugDateFormatter: DateFormatter = { () -> DateFormatter in
                                 ^~~~~~~~~~~~~
[2/66] Compiling AsyncNinja appleOS_Observation.swift
[3/66] Compiling AsyncNinja appleOS_ReactiveProperties.swift
[4/66] Compiling AsyncNinja appleOS_Retainer.swift
[5/66] Compiling AsyncNinja appleOS_URLSession.swift
[6/66] Compiling AsyncNinja iOS.swift
[7/66] Compiling AsyncNinja macOS.swift
[8/66] Compiling AsyncNinja macOS_BindingsProxy.swift
[9/66] Compiling AsyncNinja watchOS.swift
[10/66] Compiling AsyncNinja EventSource_Transform.swift
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:53:11: warning: variable 'locking' was never mutated; consider changing to 'let' constant
      var locking = makeLocking()
      ~~~ ^
      let
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:341:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:403:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
[11/66] Compiling AsyncNinja EventSource_Zip2.swift
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:53:11: warning: variable 'locking' was never mutated; consider changing to 'let' constant
      var locking = makeLocking()
      ~~~ ^
      let
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:341:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:403:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
[12/66] Compiling AsyncNinja ExecutionContext.swift
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:53:11: warning: variable 'locking' was never mutated; consider changing to 'let' constant
      var locking = makeLocking()
      ~~~ ^
      let
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:341:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:403:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
[13/66] Compiling AsyncNinja Executor.swift
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:53:11: warning: variable 'locking' was never mutated; consider changing to 'let' constant
      var locking = makeLocking()
      ~~~ ^
      let
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:341:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:403:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
[14/66] Compiling AsyncNinja Fallible.swift
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:53:11: warning: variable 'locking' was never mutated; consider changing to 'let' constant
      var locking = makeLocking()
      ~~~ ^
      let
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:341:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:403:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
[15/66] Compiling AsyncNinja Future.swift
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:53:11: warning: variable 'locking' was never mutated; consider changing to 'let' constant
      var locking = makeLocking()
      ~~~ ^
      let
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:341:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:403:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
[16/66] Compiling AsyncNinja Future_Makers.swift
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:53:11: warning: variable 'locking' was never mutated; consider changing to 'let' constant
      var locking = makeLocking()
      ~~~ ^
      let
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:341:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:403:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
[17/66] Compiling AsyncNinja KeyProtocols.swift
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:53:11: warning: variable 'locking' was never mutated; consider changing to 'let' constant
      var locking = makeLocking()
      ~~~ ^
      let
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:341:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
/host/spi-builder-workspace/Sources/EventSource_Transform.swift:403:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
[18/66] Compiling AsyncNinja EventSource_FlatMapFutures.swift
/host/spi-builder-workspace/Sources/EventSource_Merge2.swift:39:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
[19/66] Compiling AsyncNinja EventSource_Implementation.swift
/host/spi-builder-workspace/Sources/EventSource_Merge2.swift:39:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
[20/66] Compiling AsyncNinja EventSource_Map.swift
/host/spi-builder-workspace/Sources/EventSource_Merge2.swift:39:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
[21/66] Compiling AsyncNinja EventSource_Merge2.swift
/host/spi-builder-workspace/Sources/EventSource_Merge2.swift:39:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
[22/66] Compiling AsyncNinja EventSource_Merge2Unrelated.swift
/host/spi-builder-workspace/Sources/EventSource_Merge2.swift:39:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
[23/66] Compiling AsyncNinja EventSource_Sample.swift
/host/spi-builder-workspace/Sources/EventSource_Merge2.swift:39:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
[24/66] Compiling AsyncNinja EventSource_Scan.swift
/host/spi-builder-workspace/Sources/EventSource_Merge2.swift:39:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
[25/66] Compiling AsyncNinja EventSource_ToFuture.swift
/host/spi-builder-workspace/Sources/EventSource_Merge2.swift:39:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
[26/66] Compiling AsyncNinja BaseProducer.swift
/host/spi-builder-workspace/Sources/Completing_Implementation.swift:190:9: warning: variable 'handler' was written to, but never read
    var handler = makeCompletionHandler(executor: .immediate) { (completion, _) in
        ^
[27/66] Compiling AsyncNinja Box.swift
/host/spi-builder-workspace/Sources/Completing_Implementation.swift:190:9: warning: variable 'handler' was written to, but never read
    var handler = makeCompletionHandler(executor: .immediate) { (completion, _) in
        ^
[28/66] Compiling AsyncNinja CachableValue.swift
/host/spi-builder-workspace/Sources/Completing_Implementation.swift:190:9: warning: variable 'handler' was written to, but never read
    var handler = makeCompletionHandler(executor: .immediate) { (completion, _) in
        ^
[29/66] Compiling AsyncNinja Cache.swift
/host/spi-builder-workspace/Sources/Completing_Implementation.swift:190:9: warning: variable 'handler' was written to, but never read
    var handler = makeCompletionHandler(executor: .immediate) { (completion, _) in
        ^
[30/66] Compiling AsyncNinja CancellationToken.swift
/host/spi-builder-workspace/Sources/Completing_Implementation.swift:190:9: warning: variable 'handler' was written to, but never read
    var handler = makeCompletionHandler(executor: .immediate) { (completion, _) in
        ^
[31/66] Compiling AsyncNinja Channel.swift
/host/spi-builder-workspace/Sources/Completing_Implementation.swift:190:9: warning: variable 'handler' was written to, but never read
    var handler = makeCompletionHandler(executor: .immediate) { (completion, _) in
        ^
[32/66] Compiling AsyncNinja Channel_makers.swift
/host/spi-builder-workspace/Sources/Completing_Implementation.swift:190:9: warning: variable 'handler' was written to, but never read
    var handler = makeCompletionHandler(executor: .immediate) { (completion, _) in
        ^
[33/66] Compiling AsyncNinja Completable_Implementation.swift
/host/spi-builder-workspace/Sources/Completing_Implementation.swift:190:9: warning: variable 'handler' was written to, but never read
    var handler = makeCompletionHandler(executor: .immediate) { (completion, _) in
        ^
[34/66] Compiling AsyncNinja Completing_Implementation.swift
/host/spi-builder-workspace/Sources/Completing_Implementation.swift:190:9: warning: variable 'handler' was written to, but never read
    var handler = makeCompletionHandler(executor: .immediate) { (completion, _) in
        ^
[35/66] Compiling AsyncNinja ReleasePool.swift
/host/spi-builder-workspace/Sources/Sequence_AsyncFlatMap.swift:87:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking()
    ~~~ ^
    let
/host/spi-builder-workspace/Sources/Sequence_AsyncMap.swift:83:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking()
    ~~~ ^
    let
[36/66] Compiling AsyncNinja Sequence_AsyncFlatMap.swift
/host/spi-builder-workspace/Sources/Sequence_AsyncFlatMap.swift:87:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking()
    ~~~ ^
    let
/host/spi-builder-workspace/Sources/Sequence_AsyncMap.swift:83:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking()
    ~~~ ^
    let
[37/66] Compiling AsyncNinja Sequence_AsyncMap.swift
/host/spi-builder-workspace/Sources/Sequence_AsyncFlatMap.swift:87:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking()
    ~~~ ^
    let
/host/spi-builder-workspace/Sources/Sequence_AsyncMap.swift:83:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking()
    ~~~ ^
    let
[38/66] Compiling AsyncNinja Sequence_AsyncReduce.swift
/host/spi-builder-workspace/Sources/Sequence_AsyncFlatMap.swift:87:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking()
    ~~~ ^
    let
/host/spi-builder-workspace/Sources/Sequence_AsyncMap.swift:83:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking()
    ~~~ ^
    let
[39/66] Compiling AsyncNinja SinglyLinkedList.swift
/host/spi-builder-workspace/Sources/Sequence_AsyncFlatMap.swift:87:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking()
    ~~~ ^
    let
/host/spi-builder-workspace/Sources/Sequence_AsyncMap.swift:83:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking()
    ~~~ ^
    let
[40/66] Compiling AsyncNinja Sink.swift
/host/spi-builder-workspace/Sources/Sequence_AsyncFlatMap.swift:87:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking()
    ~~~ ^
    let
/host/spi-builder-workspace/Sources/Sequence_AsyncMap.swift:83:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking()
    ~~~ ^
    let
[41/66] Compiling AsyncNinja Stack.swift
/host/spi-builder-workspace/Sources/Sequence_AsyncFlatMap.swift:87:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking()
    ~~~ ^
    let
/host/spi-builder-workspace/Sources/Sequence_AsyncMap.swift:83:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking()
    ~~~ ^
    let
[42/66] Compiling AsyncNinja TimerChannel.swift
/host/spi-builder-workspace/Sources/Sequence_AsyncFlatMap.swift:87:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking()
    ~~~ ^
    let
/host/spi-builder-workspace/Sources/Sequence_AsyncMap.swift:83:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking()
    ~~~ ^
    let
[43/66] Compiling AsyncNinja TryExecute.swift
/host/spi-builder-workspace/Sources/Util.swift:53:34: error: cannot find type 'DateFormatter' in scope
  static let debugDateFormatter: DateFormatter = { () -> DateFormatter in
                                 ^~~~~~~~~~~~~
/host/spi-builder-workspace/Sources/Zip2Futures.swift:41:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
/host/spi-builder-workspace/Sources/Zip3Futures.swift:42:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
[44/66] Compiling AsyncNinja Util.swift
/host/spi-builder-workspace/Sources/Util.swift:53:34: error: cannot find type 'DateFormatter' in scope
  static let debugDateFormatter: DateFormatter = { () -> DateFormatter in
                                 ^~~~~~~~~~~~~
/host/spi-builder-workspace/Sources/Zip2Futures.swift:41:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
/host/spi-builder-workspace/Sources/Zip3Futures.swift:42:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
[45/66] Compiling AsyncNinja Zip2Futures.swift
/host/spi-builder-workspace/Sources/Util.swift:53:34: error: cannot find type 'DateFormatter' in scope
  static let debugDateFormatter: DateFormatter = { () -> DateFormatter in
                                 ^~~~~~~~~~~~~
/host/spi-builder-workspace/Sources/Zip2Futures.swift:41:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
/host/spi-builder-workspace/Sources/Zip3Futures.swift:42:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
[46/66] Compiling AsyncNinja Zip3Futures.swift
/host/spi-builder-workspace/Sources/Util.swift:53:34: error: cannot find type 'DateFormatter' in scope
  static let debugDateFormatter: DateFormatter = { () -> DateFormatter in
                                 ^~~~~~~~~~~~~
/host/spi-builder-workspace/Sources/Zip2Futures.swift:41:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
/host/spi-builder-workspace/Sources/Zip3Futures.swift:42:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
[47/66] Compiling AsyncNinja appleOS.swift
/host/spi-builder-workspace/Sources/Util.swift:53:34: error: cannot find type 'DateFormatter' in scope
  static let debugDateFormatter: DateFormatter = { () -> DateFormatter in
                                 ^~~~~~~~~~~~~
/host/spi-builder-workspace/Sources/Zip2Futures.swift:41:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
/host/spi-builder-workspace/Sources/Zip3Futures.swift:42:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
[48/66] Compiling AsyncNinja appleOS_CoreData.swift
/host/spi-builder-workspace/Sources/Util.swift:53:34: error: cannot find type 'DateFormatter' in scope
  static let debugDateFormatter: DateFormatter = { () -> DateFormatter in
                                 ^~~~~~~~~~~~~
/host/spi-builder-workspace/Sources/Zip2Futures.swift:41:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
/host/spi-builder-workspace/Sources/Zip3Futures.swift:42:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
[49/66] Compiling AsyncNinja appleOS_ExecutionContext.swift
/host/spi-builder-workspace/Sources/Util.swift:53:34: error: cannot find type 'DateFormatter' in scope
  static let debugDateFormatter: DateFormatter = { () -> DateFormatter in
                                 ^~~~~~~~~~~~~
/host/spi-builder-workspace/Sources/Zip2Futures.swift:41:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
/host/spi-builder-workspace/Sources/Zip3Futures.swift:42:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
[50/66] Compiling AsyncNinja appleOS_Notifications.swift
/host/spi-builder-workspace/Sources/Util.swift:53:34: error: cannot find type 'DateFormatter' in scope
  static let debugDateFormatter: DateFormatter = { () -> DateFormatter in
                                 ^~~~~~~~~~~~~
/host/spi-builder-workspace/Sources/Zip2Futures.swift:41:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
/host/spi-builder-workspace/Sources/Zip3Futures.swift:42:7: warning: variable 'locking' was never mutated; consider changing to 'let' constant
  var locking = makeLocking()
  ~~~ ^
  let
[51/66] Compiling AsyncNinja Locking.swift
[52/66] Compiling AsyncNinja MergeFutures.swift
[53/66] Compiling AsyncNinja NetworkReachability.swift
[54/66] Compiling AsyncNinja OptionalAdaptor.swift
[55/66] Compiling AsyncNinja Producer.swift
[56/66] Compiling AsyncNinja ProducerProxy.swift
[57/66] Compiling AsyncNinja Promise.swift
[58/66] Compiling AsyncNinja Queue.swift
[59/66] Compiling AsyncNinja Completing_Transform.swift
/host/spi-builder-workspace/Sources/Util.swift:53:34: error: cannot find type 'DateFormatter' in scope
  static let debugDateFormatter: DateFormatter = { () -> DateFormatter in
                                 ^~~~~~~~~~~~~
/host/spi-builder-workspace/Sources/EventSource_Combine.swift:54:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
[60/66] Compiling AsyncNinja ConstantFuture.swift
/host/spi-builder-workspace/Sources/Util.swift:53:34: error: cannot find type 'DateFormatter' in scope
  static let debugDateFormatter: DateFormatter = { () -> DateFormatter in
                                 ^~~~~~~~~~~~~
/host/spi-builder-workspace/Sources/EventSource_Combine.swift:54:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
[61/66] Compiling AsyncNinja Debug.swift
/host/spi-builder-workspace/Sources/Util.swift:53:34: error: cannot find type 'DateFormatter' in scope
  static let debugDateFormatter: DateFormatter = { () -> DateFormatter in
                                 ^~~~~~~~~~~~~
/host/spi-builder-workspace/Sources/EventSource_Combine.swift:54:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
[62/66] Compiling AsyncNinja Dispatch_Extensions.swift
/host/spi-builder-workspace/Sources/Util.swift:53:34: error: cannot find type 'DateFormatter' in scope
  static let debugDateFormatter: DateFormatter = { () -> DateFormatter in
                                 ^~~~~~~~~~~~~
/host/spi-builder-workspace/Sources/EventSource_Combine.swift:54:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
[63/66] Compiling AsyncNinja DynamicProperty.swift
/host/spi-builder-workspace/Sources/Util.swift:53:34: error: cannot find type 'DateFormatter' in scope
  static let debugDateFormatter: DateFormatter = { () -> DateFormatter in
                                 ^~~~~~~~~~~~~
/host/spi-builder-workspace/Sources/EventSource_Combine.swift:54:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
[64/66] Compiling AsyncNinja Either.swift
/host/spi-builder-workspace/Sources/Util.swift:53:34: error: cannot find type 'DateFormatter' in scope
  static let debugDateFormatter: DateFormatter = { () -> DateFormatter in
                                 ^~~~~~~~~~~~~
/host/spi-builder-workspace/Sources/EventSource_Combine.swift:54:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
[65/66] Compiling AsyncNinja EventSource_Combine.swift
/host/spi-builder-workspace/Sources/Util.swift:53:34: error: cannot find type 'DateFormatter' in scope
  static let debugDateFormatter: DateFormatter = { () -> DateFormatter in
                                 ^~~~~~~~~~~~~
/host/spi-builder-workspace/Sources/EventSource_Combine.swift:54:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
[66/66] Compiling AsyncNinja EventSource_Debounce.swift
/host/spi-builder-workspace/Sources/Util.swift:53:34: error: cannot find type 'DateFormatter' in scope
  static let debugDateFormatter: DateFormatter = { () -> DateFormatter in
                                 ^~~~~~~~~~~~~
/host/spi-builder-workspace/Sources/EventSource_Combine.swift:54:9: warning: variable 'locking' was never mutated; consider changing to 'let' constant
    var locking = makeLocking(isFair: true)
    ~~~ ^
    let
error: fatalError
BUILD FAILURE 5.9 linux

Build Machine: Linux 2