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

Build Information

Failed to build Workflow, reference v3.16.0 (4a5b28), with Swift 6.0 for Linux on 18 Apr 2025 00:01:06 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.60.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/square/workflow-swift.git
Reference: v3.16.0
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
From https://github.com/square/workflow-swift
 * tag               v3.16.0    -> FETCH_HEAD
HEAD is now at 4a5b28f Adding details to the parent dependencies section of the WorkflowSwiftUI Adoption Guide (#337)
Cloned https://github.com/square/workflow-swift.git
Revision (git rev-parse @):
4a5b28fcaaa903c3d278aa4313fdd8cf586ba5e3
SUCCESS checkout https://github.com/square/workflow-swift.git at v3.16.0
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $PWD
https://github.com/square/workflow-swift.git
https://github.com/square/workflow-swift.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
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        "AnyWorkflowConvertible.swift",
        "Debugging.swift",
        "DispatchQueue+Workflow.swift",
        "Lifetime.swift",
        "RenderContext.swift",
        "Sink.swift",
        "StateMutationSink.swift",
        "SubtreeManager.swift",
        "Workflow.swift",
        "WorkflowAction.swift",
        "WorkflowHost.swift",
        "WorkflowLogger.swift",
        "WorkflowNode.swift",
        "WorkflowObserver.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ViewEnvironmentUI",
      "module_type" : "SwiftTarget",
      "name" : "ViewEnvironmentUI",
      "path" : "ViewEnvironmentUI/Sources",
      "product_memberships" : [
        "WorkflowUI",
        "WorkflowSwiftUI",
        "ViewEnvironmentUI",
        "WorkflowSwiftUIExperimental"
      ],
      "sources" : [
        "UIView+ViewEnvironmentPropagating.swift",
        "UIViewController+ViewEnvironmentPropagating.swift",
        "ViewEnvironmentObserving.swift",
        "ViewEnvironmentPropagating.swift",
        "ViewEnvironmentPropagationNode.swift"
      ],
      "target_dependencies" : [
        "ViewEnvironment"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ViewEnvironment",
      "module_type" : "SwiftTarget",
      "name" : "ViewEnvironment",
      "path" : "ViewEnvironment/Sources",
      "product_memberships" : [
        "WorkflowUI",
        "WorkflowSwiftUI",
        "ViewEnvironment",
        "ViewEnvironmentUI",
        "WorkflowSwiftUIExperimental"
      ],
      "sources" : [
        "EnvironmentValues+ViewEnvironment.swift",
        "ViewEnvironment.swift",
        "ViewEnvironmentKey.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures 2>&1
basic-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:9029076bb687edc160a3d5201c89e92dd9fa7309f33f090c4234365c83366c31
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
Fetching https://github.com/pointfreeco/swift-identified-collections
Fetching https://github.com/pointfreeco/swift-custom-dump
Fetching https://github.com/swiftlang/swift-syntax
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Computing version for https://github.com/ReactiveCocoa/ReactiveSwift.git
Computed https://github.com/ReactiveCocoa/ReactiveSwift.git at 7.2.0 (1.98s)
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Working copy of https://github.com/pointfreeco/swift-snapshot-testing resolved at 1.18.3
Creating working copy for https://github.com/swiftlang/swift-syntax
Working copy of https://github.com/swiftlang/swift-syntax resolved at 600.0.1
Creating working copy for https://github.com/ReactiveX/RxSwift.git
Working copy of https://github.com/ReactiveX/RxSwift.git resolved at 6.9.0
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Working copy of https://github.com/pointfreeco/swift-case-paths resolved at 1.7.0
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Working copy of https://github.com/pointfreeco/swift-macro-testing resolved at 0.6.2
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Building for debugging...
[0/70] Write sources
[30/70] Copying PrivacyInfo.xcprivacy
[30/70] Write sources
[45/70] Compiling _SwiftSyntaxCShims dummy.c
[46/70] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[48/162] Emitting module SwiftSyntax510
<unknown>:0: error: upcoming feature 'StrictConcurrency' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
[49/306] Emitting module InternalCollectionsUtilities
[50/308] Compiling InternalCollectionsUtilities UnsafeBufferPointer+Extras.swift
[51/308] Compiling InternalCollectionsUtilities UnsafeMutableBufferPointer+Extras.swift
[52/308] Compiling ViewEnvironment ViewEnvironmentKey.swift
[53/308] Compiling SwiftSyntax510 Empty.swift
<unknown>:0: error: upcoming feature 'StrictConcurrency' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
[54/308] Compiling SwiftSyntax600 Empty.swift
<unknown>:0: error: upcoming feature 'StrictConcurrency' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
error: emit-module command failed with exit code 1 (use -v to see invocation)
[55/308] Emitting module SwiftSyntax600
<unknown>:0: error: upcoming feature 'StrictConcurrency' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
error: emit-module command failed with exit code 1 (use -v to see invocation)
[56/308] Emitting module SwiftSyntax509
<unknown>:0: error: upcoming feature 'StrictConcurrency' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
[57/308] Compiling SwiftSyntax509 Empty.swift
<unknown>:0: error: upcoming feature 'StrictConcurrency' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
error: emit-module command failed with exit code 1 (use -v to see invocation)
[58/308] Emitting module IssueReporting
<unknown>:0: error: upcoming feature 'StrictConcurrency' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'StrictConcurrency' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: error: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
/host/spi-builder-workspace/ViewEnvironment/Sources/ViewEnvironment.swift:29:23: warning: static property 'empty' is not concurrency-safe because non-'Sendable' type 'ViewEnvironment' may have shared mutable state; this is an error in the Swift 6 language mode
22 | /// the environment of its two children according to which position they’re
23 | /// appearing in).
24 | public struct ViewEnvironment {
   |               `- note: consider making struct 'ViewEnvironment' conform to the 'Sendable' protocol
25 |     /// An empty view environment. This should only be used when setting up a
26 |     /// root workflow into a root WorkflowHostingController or when writing tests.
27 |     /// In other scenarios, containers should pass down the ViewEnvironment
28 |     /// value they get from above.
29 |     public static let empty: ViewEnvironment = .init()
   |                       |- warning: static property 'empty' is not concurrency-safe because non-'Sendable' type 'ViewEnvironment' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: annotate 'empty' with '@MainActor' if property should only be accessed from the main actor
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
30 |
31 |     /// Storage of [K.Type: K.Value] where K: ViewEnvironmentKey
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:9029076bb687edc160a3d5201c89e92dd9fa7309f33f090c4234365c83366c31
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
[0/1] Planning build
Building for debugging...
[0/24] Write swift-version-24593BA9C3E375BF.txt
[2/70] Compiling SwiftSyntax509 Empty.swift
[3/98] Emitting module SwiftSyntax600
[4/98] Compiling SwiftSyntax600 Empty.swift
[5/99] Compiling ViewEnvironment ViewEnvironmentKey.swift
[6/111] Emitting module SwiftSyntax509
[7/111] Emitting module SwiftSyntax510
[8/111] Compiling SwiftSyntax510 Empty.swift
[10/263] Compiling RxSwift Error.swift
[11/263] Compiling RxSwift Errors.swift
[12/263] Compiling RxSwift Empty.swift
[13/263] Compiling RxSwift Enumerated.swift
[14/265] Compiling ViewEnvironment EnvironmentValues+ViewEnvironment.swift
[15/265] Compiling ViewEnvironment ViewEnvironment.swift
[16/265] Emitting module ViewEnvironment
[18/265] Compiling RxSwift First.swift
[19/265] Compiling RxSwift Generate.swift
[20/266] Wrapping AST for SwiftSyntax600 for debugging
[22/266] Wrapping AST for SwiftSyntax509 for debugging
[23/266] Wrapping AST for SwiftSyntax510 for debugging
[25/266] Compiling RxSwift Infallible+CombineLatest+Collection.swift
[26/266] Compiling RxSwift Infallible+CombineLatest+arity.swift
[27/266] Compiling RxSwift Infallible+Concurrency.swift
[28/266] Compiling RxSwift Infallible+Create.swift
[29/266] Compiling RxSwift Infallible+Debug.swift
[30/266] Compiling RxSwift Infallible+Operators.swift
[31/272] Compiling InternalCollectionsUtilities UnsafeBufferPointer+Extras.swift
[32/272] Compiling InternalCollectionsUtilities UnsafeMutableBufferPointer+Extras.swift
[33/272] Compiling RxSwift DispatchQueueConfiguration.swift
[34/272] Compiling RxSwift Disposable.swift
[35/272] Compiling RxSwift Disposables.swift
[38/340] Emitting module IssueReporting
[39/344] Emitting module InternalCollectionsUtilities
[40/344] Compiling ViewEnvironmentUI UIView+ViewEnvironmentPropagating.swift
[41/344] Emitting module ViewEnvironmentUI
[42/344] Compiling ViewEnvironmentUI ViewEnvironmentPropagationNode.swift
[43/344] Compiling SwiftSyntax RawSyntaxTokenView.swift
[44/344] Compiling SwiftSyntax SourceEdit.swift
[45/344] Compiling SwiftSyntax SourceLength.swift
[46/344] Compiling SwiftSyntax Assert.swift
[47/344] Compiling SwiftSyntax BumpPtrAllocator.swift
[48/344] Compiling SwiftSyntax RawSyntaxLayoutView.swift
[49/344] Compiling SwiftSyntax RawSyntaxNodeProtocol.swift
[51/345] Compiling SwiftSyntax SourcePresence.swift
[52/345] Compiling SwiftSyntax SwiftSyntaxCompatibility.swift
[53/400] Compiling OrderedCollections OrderedSet+Descriptions.swift
[54/400] Compiling OrderedCollections OrderedSet+Diffing.swift
[55/400] Compiling OrderedCollections OrderedSet+Equatable.swift
[56/400] Compiling OrderedCollections OrderedSet+ExpressibleByArrayLiteral.swift
[57/400] Compiling OrderedCollections OrderedSet+Hashable.swift
[58/400] Compiling OrderedCollections OrderedSet+Initializers.swift
[59/400] Compiling OrderedCollections OrderedSet+Insertions.swift
[60/400] Compiling OrderedCollections OrderedSet+Invariants.swift
[61/400] Compiling OrderedCollections OrderedSet+Partial MutableCollection.swift
[62/400] Compiling OrderedCollections OrderedSet+Partial RangeReplaceableCollection.swift
[63/400] Compiling OrderedCollections OrderedSet+Partial SetAlgebra formIntersection.swift
[64/400] Compiling OrderedCollections OrderedSet+Partial SetAlgebra formSymmetricDifference.swift
[65/400] Compiling ViewEnvironmentUI ViewEnvironmentObserving.swift
[66/400] Compiling ViewEnvironmentUI UIViewController+ViewEnvironmentPropagating.swift
[67/400] Compiling ViewEnvironmentUI ViewEnvironmentPropagating.swift
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:259:13: error: cannot find 'objc_getAssociatedObject' in scope
257 |     public var environmentAncestorOverride: EnvironmentAncestorProvider? {
258 |         get {
259 |             objc_getAssociatedObject(self, &AssociatedKeys.ancestorOverride) as? EnvironmentAncestorProvider
    |             `- error: cannot find 'objc_getAssociatedObject' in scope
260 |         }
261 |         set {
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:267:13: error: cannot find 'objc_setAssociatedObject' in scope
265 |                 "Attempting to set environment ancestor override when one is already set."
266 |             )
267 |             objc_setAssociatedObject(self, &AssociatedKeys.ancestorOverride, newValue, .OBJC_ASSOCIATION_RETAIN)
    |             `- error: cannot find 'objc_setAssociatedObject' in scope
268 |         }
269 |     }
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:267:89: error: cannot infer contextual base in reference to member 'OBJC_ASSOCIATION_RETAIN'
265 |                 "Attempting to set environment ancestor override when one is already set."
266 |             )
267 |             objc_setAssociatedObject(self, &AssociatedKeys.ancestorOverride, newValue, .OBJC_ASSOCIATION_RETAIN)
    |                                                                                         `- error: cannot infer contextual base in reference to member 'OBJC_ASSOCIATION_RETAIN'
268 |         }
269 |     }
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:293:13: error: cannot find 'objc_getAssociatedObject' in scope
291 |     public var environmentDescendantsOverride: EnvironmentDescendantsProvider? {
292 |         get {
293 |             objc_getAssociatedObject(self, &AssociatedKeys.descendantsOverride) as? EnvironmentDescendantsProvider
    |             `- error: cannot find 'objc_getAssociatedObject' in scope
294 |         }
295 |         set {
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:301:13: error: cannot find 'objc_setAssociatedObject' in scope
299 |                 "Attempting to set environment descendants override when one is already set."
300 |             )
301 |             objc_setAssociatedObject(self, &AssociatedKeys.descendantsOverride, newValue, .OBJC_ASSOCIATION_RETAIN)
    |             `- error: cannot find 'objc_setAssociatedObject' in scope
302 |         }
303 |     }
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:301:92: error: cannot infer contextual base in reference to member 'OBJC_ASSOCIATION_RETAIN'
299 |                 "Attempting to set environment descendants override when one is already set."
300 |             )
301 |             objc_setAssociatedObject(self, &AssociatedKeys.descendantsOverride, newValue, .OBJC_ASSOCIATION_RETAIN)
    |                                                                                            `- error: cannot infer contextual base in reference to member 'OBJC_ASSOCIATION_RETAIN'
302 |         }
303 |     }
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:436:13: error: cannot find 'objc_getAssociatedObject' in scope
434 |     private var needsUpdateObservers: [ViewEnvironmentUpdateObservationKey: ViewEnvironmentUpdateObservation] {
435 |         get {
436 |             objc_getAssociatedObject(
    |             `- error: cannot find 'objc_getAssociatedObject' in scope
437 |                 self,
438 |                 &AssociatedKeys.needsUpdateObservers
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:442:13: error: cannot find 'objc_setAssociatedObject' in scope
440 |         }
441 |         set {
442 |             objc_setAssociatedObject(
    |             `- error: cannot find 'objc_setAssociatedObject' in scope
443 |                 self,
444 |                 &AssociatedKeys.needsUpdateObservers,
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:446:18: error: cannot infer contextual base in reference to member 'OBJC_ASSOCIATION_RETAIN_NONATOMIC'
444 |                 &AssociatedKeys.needsUpdateObservers,
445 |                 newValue,
446 |                 .OBJC_ASSOCIATION_RETAIN_NONATOMIC
    |                  `- error: cannot infer contextual base in reference to member 'OBJC_ASSOCIATION_RETAIN_NONATOMIC'
447 |             )
448 |         }
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:453:36: error: cannot find 'objc_getAssociatedObject' in scope
451 |     var needsEnvironmentUpdate: Bool {
452 |         get {
453 |             let associatedObject = objc_getAssociatedObject(
    |                                    `- error: cannot find 'objc_getAssociatedObject' in scope
454 |                 self,
455 |                 &AssociatedKeys.needsEnvironmentUpdate
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:460:13: error: cannot find 'objc_setAssociatedObject' in scope
458 |         }
459 |         set {
460 |             objc_setAssociatedObject(
    |             `- error: cannot find 'objc_setAssociatedObject' in scope
461 |                 self,
462 |                 &AssociatedKeys.needsEnvironmentUpdate,
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:464:17: error: cannot find 'objc_AssociationPolicy' in scope
462 |                 &AssociatedKeys.needsEnvironmentUpdate,
463 |                 newValue,
464 |                 objc_AssociationPolicy.OBJC_ASSOCIATION_COPY
    |                 `- error: cannot find 'objc_AssociationPolicy' in scope
465 |             )
466 |         }
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:513:13: error: cannot find 'objc_getAssociatedObject' in scope
511 |     fileprivate var customizations: [StoredViewEnvironmentCustomization] {
512 |         get {
513 |             objc_getAssociatedObject(
    |             `- error: cannot find 'objc_getAssociatedObject' in scope
514 |                 self,
515 |                 &AssociatedKeys.customizations
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:519:13: error: cannot find 'objc_setAssociatedObject' in scope
517 |         }
518 |         set {
519 |             objc_setAssociatedObject(
    |             `- error: cannot find 'objc_setAssociatedObject' in scope
520 |                 self,
521 |                 &AssociatedKeys.customizations,
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:523:18: error: cannot infer contextual base in reference to member 'OBJC_ASSOCIATION_RETAIN_NONATOMIC'
521 |                 &AssociatedKeys.customizations,
522 |                 newValue,
523 |                 .OBJC_ASSOCIATION_RETAIN_NONATOMIC
    |                  `- error: cannot infer contextual base in reference to member 'OBJC_ASSOCIATION_RETAIN_NONATOMIC'
524 |             )
525 |         }
[68/400] Compiling OrderedCollections OrderedDictionary+Elements.SubSequence.swift
[69/400] Compiling OrderedCollections OrderedDictionary+Elements.swift
BUILD FAILURE 6.0 linux