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Build Information

Failed to build swift-sharing, reference 2.5.2 (75e846), with Swift 6.1 for Wasm on 31 May 2025 01:41:40 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:wasm-6.1-latest swift build --swift-sdk wasm32-unknown-wasi 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.63.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/pointfreeco/swift-sharing.git
Reference: 2.5.2
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/pointfreeco/swift-sharing
 * tag               2.5.2      -> FETCH_HEAD
HEAD is now at 75e846e Publishers send the latest shared value for new subscriptions. Fixes #160. (#161)
Cloned https://github.com/pointfreeco/swift-sharing.git
Revision (git rev-parse @):
75e846ee3159dc75b3a29bfc24b6ce5a557ddca9
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/pointfreeco/swift-sharing.git at 2.5.2
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/pointfreeco/swift-sharing.git
https://github.com/pointfreeco/swift-sharing.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "combine-schedulers",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/combine-schedulers"
    },
    {
      "identity" : "swift-concurrency-extras",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.3.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-concurrency-extras"
    },
    {
      "identity" : "swift-custom-dump",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-custom-dump"
    },
    {
      "identity" : "swift-dependencies",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.5.1",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-dependencies"
    },
    {
      "identity" : "swift-identified-collections",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-identified-collections"
    },
    {
      "identity" : "swift-perception",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.4.1",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-perception"
    },
    {
      "identity" : "xctest-dynamic-overlay",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.4.3",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/xctest-dynamic-overlay"
    },
    {
      "identity" : "swift-docc-plugin",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/swiftlang/swift-docc-plugin"
    }
  ],
  "manifest_display_name" : "swift-sharing",
  "name" : "swift-sharing",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    }
  ],
  "products" : [
    {
      "name" : "Sharing",
      "targets" : [
        "Sharing"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "6"
  ],
  "targets" : [
    {
      "c99name" : "SharingTests",
      "module_type" : "SwiftTarget",
      "name" : "SharingTests",
      "path" : "Tests/SharingTests",
      "product_dependencies" : [
        "DependenciesTestSupport"
      ],
      "sources" : [
        "AppStorageTests.swift",
        "BindingTests.swift",
        "CompileTimeTests.swift",
        "ContinuationTests.swift",
        "DefaultTests.swift",
        "EquatableTests.swift",
        "ErrorThrowingTests.swift",
        "FileStorageTests.swift",
        "InMemoryTests.swift",
        "IsLoadingTests.swift",
        "ObservationTests.swift",
        "PublisherTests.swift",
        "SharedChangeTrackerTests.swift",
        "SharedTests.swift"
      ],
      "target_dependencies" : [
        "Sharing"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Sharing2",
      "module_type" : "SwiftTarget",
      "name" : "Sharing2",
      "path" : "Sources/VersionMarkerModules/Sharing2",
      "product_memberships" : [
        "Sharing"
      ],
      "sources" : [
        "Empty.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Sharing1",
      "module_type" : "SwiftTarget",
      "name" : "Sharing1",
      "path" : "Sources/VersionMarkerModules/Sharing1",
      "product_memberships" : [
        "Sharing"
      ],
      "sources" : [
        "Empty.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Sharing",
      "module_type" : "SwiftTarget",
      "name" : "Sharing",
      "path" : "Sources/Sharing",
      "product_dependencies" : [
        "CombineSchedulers",
        "ConcurrencyExtras",
        "CustomDump",
        "Dependencies",
        "IdentifiedCollections",
        "IssueReporting",
        "PerceptionCore"
      ],
      "product_memberships" : [
        "Sharing"
      ],
      "resources" : [
        {
          "path" : "/host/spi-builder-workspace/Sources/Sharing/PrivacyInfo.xcprivacy",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "Internal/Deprecations.swift",
        "Internal/KeyPath+Sendable.swift",
        "Internal/MutexBackport.swift",
        "Internal/NSRecursiveLock+WithLock.swift",
        "Internal/PassthroughRelay.swift",
        "Internal/PersistentReferences.swift",
        "Internal/Reference.swift",
        "Internal/SharedChangeTracker.swift",
        "Internal/TypeName.swift",
        "Shared.swift",
        "SharedBinding.swift",
        "SharedCollection.swift",
        "SharedContinuations.swift",
        "SharedKey.swift",
        "SharedKeys/AppStorageKey.swift",
        "SharedKeys/DefaultKey.swift",
        "SharedKeys/FileStorageKey.swift",
        "SharedKeys/InMemoryKey.swift",
        "SharedPublisher.swift",
        "SharedReader.swift",
        "SharedReaderKey.swift",
        "SwiftUIStateSharing.swift"
      ],
      "target_dependencies" : [
        "Sharing1",
        "Sharing2"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:wasm-6.1-latest swift build --swift-sdk wasm32-unknown-wasi -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats 2>&1
wasm-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:7e37457820e5f17452a98118754f345f2619722c485f2db0d8b666940a83afd2
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:wasm-6.1-latest
Fetching https://github.com/swiftlang/swift-docc-plugin
Fetching https://github.com/pointfreeco/swift-perception
Fetching https://github.com/pointfreeco/swift-dependencies
Fetching https://github.com/pointfreeco/xctest-dynamic-overlay
Fetching https://github.com/pointfreeco/swift-identified-collections
Fetching https://github.com/pointfreeco/swift-custom-dump
[1/1411] Fetching swift-perception
[693/3460] Fetching swift-perception, swift-docc-plugin
[1469/8041] Fetching swift-perception, swift-docc-plugin, swift-custom-dump
[6752/9575] Fetching swift-perception, swift-docc-plugin, swift-custom-dump, swift-identified-collections
[9086/15033] Fetching swift-perception, swift-docc-plugin, swift-custom-dump, swift-identified-collections, xctest-dynamic-overlay
[10341/21282] Fetching swift-perception, swift-docc-plugin, swift-custom-dump, swift-identified-collections, xctest-dynamic-overlay, swift-dependencies
Fetched https://github.com/pointfreeco/swift-custom-dump from cache (1.41s)
Fetched https://github.com/pointfreeco/swift-perception from cache (1.41s)
Fetched https://github.com/pointfreeco/swift-identified-collections from cache (1.41s)
Fetched https://github.com/pointfreeco/swift-dependencies from cache (1.41s)
Fetching https://github.com/pointfreeco/combine-schedulers
Fetching https://github.com/pointfreeco/swift-concurrency-extras
Fetched https://github.com/swiftlang/swift-docc-plugin from cache (1.42s)
Fetched https://github.com/pointfreeco/xctest-dynamic-overlay from cache (1.42s)
[1/852] Fetching swift-concurrency-extras
[853/3262] Fetching swift-concurrency-extras, combine-schedulers
Fetched https://github.com/pointfreeco/swift-concurrency-extras from cache (0.71s)
Fetched https://github.com/pointfreeco/combine-schedulers from cache (0.72s)
Computing version for https://github.com/pointfreeco/swift-concurrency-extras
Computed https://github.com/pointfreeco/swift-concurrency-extras at 1.3.1 (2.59s)
Computing version for https://github.com/pointfreeco/xctest-dynamic-overlay
Computed https://github.com/pointfreeco/xctest-dynamic-overlay at 1.5.2 (0.49s)
Computing version for https://github.com/pointfreeco/combine-schedulers
Computed https://github.com/pointfreeco/combine-schedulers at 1.0.3 (0.48s)
Computing version for https://github.com/pointfreeco/swift-perception
Computed https://github.com/pointfreeco/swift-perception at 1.6.0 (0.75s)
Fetching https://github.com/swiftlang/swift-syntax
[1/70541] Fetching swift-syntax
Fetched https://github.com/swiftlang/swift-syntax from cache (7.52s)
Computing version for https://github.com/pointfreeco/swift-identified-collections
Computed https://github.com/pointfreeco/swift-identified-collections at 1.1.1 (8.05s)
Fetching https://github.com/apple/swift-collections
[1/16591] Fetching swift-collections
Fetched https://github.com/apple/swift-collections from cache (1.89s)
Computing version for https://github.com/swiftlang/swift-docc-plugin
Computed https://github.com/swiftlang/swift-docc-plugin at 1.4.3 (4.64s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit
[1/3392] Fetching swift-docc-symbolkit
Fetched https://github.com/swiftlang/swift-docc-symbolkit from cache (0.34s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (0.89s)
Computing version for https://github.com/pointfreeco/swift-custom-dump
Computed https://github.com/pointfreeco/swift-custom-dump at 1.3.3 (0.44s)
Computing version for https://github.com/apple/swift-collections
Computed https://github.com/apple/swift-collections at 1.2.0 (0.69s)
Computing version for https://github.com/pointfreeco/swift-dependencies
Computed https://github.com/pointfreeco/swift-dependencies at 1.9.2 (0.51s)
Fetching https://github.com/pointfreeco/swift-clocks
[1/1292] Fetching swift-clocks
Fetched https://github.com/pointfreeco/swift-clocks from cache (1.49s)
Computing version for https://github.com/pointfreeco/swift-clocks
Computed https://github.com/pointfreeco/swift-clocks at 1.0.6 (2.16s)
Computing version for https://github.com/swiftlang/swift-syntax
Computed https://github.com/swiftlang/swift-syntax at 601.0.1 (0.85s)
Creating working copy for https://github.com/pointfreeco/swift-clocks
Working copy of https://github.com/pointfreeco/swift-clocks resolved at 1.0.6
Creating working copy for https://github.com/pointfreeco/xctest-dynamic-overlay
Working copy of https://github.com/pointfreeco/xctest-dynamic-overlay resolved at 1.5.2
Creating working copy for https://github.com/apple/swift-collections
Working copy of https://github.com/apple/swift-collections resolved at 1.2.0
Creating working copy for https://github.com/pointfreeco/swift-concurrency-extras
Working copy of https://github.com/pointfreeco/swift-concurrency-extras resolved at 1.3.1
Creating working copy for https://github.com/pointfreeco/swift-perception
Working copy of https://github.com/pointfreeco/swift-perception resolved at 1.6.0
Creating working copy for https://github.com/swiftlang/swift-docc-symbolkit
Working copy of https://github.com/swiftlang/swift-docc-symbolkit resolved at 1.0.0
Creating working copy for https://github.com/pointfreeco/swift-identified-collections
Working copy of https://github.com/pointfreeco/swift-identified-collections resolved at 1.1.1
Creating working copy for https://github.com/swiftlang/swift-docc-plugin
Working copy of https://github.com/swiftlang/swift-docc-plugin resolved at 1.4.3
Creating working copy for https://github.com/pointfreeco/swift-dependencies
Working copy of https://github.com/pointfreeco/swift-dependencies resolved at 1.9.2
Creating working copy for https://github.com/swiftlang/swift-syntax
Working copy of https://github.com/swiftlang/swift-syntax resolved at 601.0.1
Creating working copy for https://github.com/pointfreeco/combine-schedulers
Working copy of https://github.com/pointfreeco/combine-schedulers resolved at 1.0.3
Creating working copy for https://github.com/pointfreeco/swift-custom-dump
Working copy of https://github.com/pointfreeco/swift-custom-dump resolved at 1.3.3
[1/1] Compiling plugin Swift-DocC Preview
[2/2] Compiling plugin Swift-DocC
Building for debugging...
[2/22] Write sources
[3/22] Copying PrivacyInfo.xcprivacy
[3/22] Write sources
[18/22] Write swift-version-24593BA9C3E375BF.txt
[20/73] Emitting module InternalCollectionsUtilities
[21/73] Compiling InternalCollectionsUtilities FixedWidthInteger+roundUpToPowerOfTwo.swift
[22/73] Compiling InternalCollectionsUtilities Integer rank.swift
[23/74] Compiling InternalCollectionsUtilities UnsafeBufferPointer+Extras.swift
[24/74] Compiling IssueReporting TestContext.swift
[25/74] Compiling IssueReporting Unimplemented.swift
[26/74] Compiling InternalCollectionsUtilities _UniqueCollection.swift
[27/74] Compiling InternalCollectionsUtilities Debugging.swift
[28/74] Compiling InternalCollectionsUtilities Descriptions.swift
[29/74] Compiling InternalCollectionsUtilities RandomAccessCollection+Offsets.swift
[30/74] Emitting module Sharing1
[31/74] Compiling Sharing1 Empty.swift
[32/77] Emitting module Sharing2
[33/77] Compiling Sharing2 Empty.swift
[34/78] Compiling InternalCollectionsUtilities _UnsafeBitSet+Index.swift
[35/78] Compiling InternalCollectionsUtilities _UnsafeBitSet+_Word.swift
[36/78] Compiling InternalCollectionsUtilities UInt+first and last set bit.swift
[37/78] Compiling InternalCollectionsUtilities UInt+reversed.swift
[38/78] Compiling InternalCollectionsUtilities _UnsafeBitSet.swift
[39/78] Compiling InternalCollectionsUtilities _SortedCollection.swift
[42/78] Compiling InternalCollectionsUtilities UnsafeMutableBufferPointer+Extras.swift
[43/79] Compiling IssueReporting WithExpectedIssue.swift
[44/79] Compiling IssueReporting WithIssueContext.swift
[46/134] Compiling OrderedCollections _HashTable+Bucket.swift
[47/134] Compiling OrderedCollections _HashTable+BucketIterator.swift
[48/135] Compiling ConcurrencyExtras Result.swift
[49/135] Compiling ConcurrencyExtras MainSerialExecutor.swift
[50/135] Compiling ConcurrencyExtras Task.swift
[51/135] Compiling IssueReportingTestSupport SwiftTesting.swift
[52/135] Emitting module IssueReportingTestSupport
[53/135] Compiling IssueReportingTestSupport XCTest.swift
[54/135] Compiling OrderedCollections _HashTable.swift
[55/135] Compiling OrderedCollections _Hashtable+Header.swift
[56/135] Compiling OrderedCollections OrderedDictionary+Codable.swift
[57/135] Compiling OrderedCollections _HashTable+CustomStringConvertible.swift
[58/135] Compiling OrderedCollections _HashTable+Testing.swift
[59/135] Compiling OrderedCollections _HashTable+UnsafeHandle.swift
[60/136] Compiling OrderedCollections OrderedDictionary+CustomReflectable.swift
[61/136] Compiling OrderedCollections OrderedDictionary+Deprecations.swift
[62/136] Compiling OrderedCollections OrderedDictionary+ExpressibleByDictionaryLiteral.swift
[63/136] Compiling OrderedCollections OrderedDictionary+Hashable.swift
[64/136] Compiling OrderedCollections OrderedDictionary+Initializers.swift
[65/136] Compiling OrderedCollections OrderedDictionary+Descriptions.swift
[66/136] Compiling OrderedCollections OrderedDictionary+Elements.SubSequence.swift
[67/136] Emitting module IssueReporting
[70/136] Compiling OrderedCollections _HashTable+Constants.swift
[75/137] Emitting module ConcurrencyExtras
[76/137] Compiling ConcurrencyExtras LockIsolated.swift
[78/137] Compiling ConcurrencyExtras UncheckedSendable.swift
[81/138] Compiling OrderedCollections OrderedSet+Partial SetAlgebra subtract.swift
[82/138] Compiling OrderedCollections OrderedSet+Partial SetAlgebra subtracting.swift
[83/138] Compiling OrderedCollections OrderedSet+Partial SetAlgebra symmetricDifference.swift
[84/138] Compiling OrderedCollections OrderedSet+Partial SetAlgebra union.swift
[85/138] Compiling OrderedCollections OrderedSet+Partial SetAlgebra+Basics.swift
[86/138] Compiling OrderedCollections OrderedSet+RandomAccessCollection.swift
[87/138] Compiling OrderedCollections OrderedSet+ReserveCapacity.swift
[88/145] Compiling OrderedCollections OrderedSet+Initializers.swift
[89/145] Compiling OrderedCollections OrderedSet+Insertions.swift
[90/145] Compiling OrderedCollections OrderedSet+Invariants.swift
[91/145] Compiling OrderedCollections OrderedSet+Partial MutableCollection.swift
[92/145] Compiling OrderedCollections OrderedSet+Partial RangeReplaceableCollection.swift
[93/145] Compiling OrderedCollections OrderedSet+Partial SetAlgebra formIntersection.swift
[94/145] Compiling OrderedCollections OrderedSet+Partial SetAlgebra formSymmetricDifference.swift
[95/145] Compiling OrderedCollections OrderedSet+Partial SetAlgebra formUnion.swift
[96/145] Compiling OrderedCollections OrderedSet+Partial SetAlgebra intersection.swift
[97/145] Compiling OrderedCollections OrderedSet+Partial SetAlgebra isDisjoint.swift
[98/145] Compiling OrderedCollections OrderedSet+Partial SetAlgebra isEqualSet.swift
[99/145] Compiling OrderedCollections OrderedSet+Partial SetAlgebra isStrictSubset.swift
[100/145] Compiling OrderedCollections OrderedSet+Partial SetAlgebra isStrictSuperset.swift
[101/145] Compiling OrderedCollections OrderedSet+Partial SetAlgebra isSubset.swift
[102/145] Compiling OrderedCollections OrderedSet+Partial SetAlgebra isSuperset.swift
[105/145] Compiling OrderedCollections OrderedDictionary+Invariants.swift
[106/145] Compiling OrderedCollections OrderedDictionary+Partial MutableCollection.swift
[107/145] Compiling OrderedCollections OrderedDictionary+Partial RangeReplaceableCollection.swift
[108/145] Compiling OrderedCollections OrderedDictionary+Sendable.swift
[109/145] Compiling OrderedCollections OrderedDictionary+Sequence.swift
[110/145] Compiling OrderedCollections OrderedDictionary+Values.swift
[111/145] Compiling OrderedCollections OrderedDictionary.swift
[112/145] Compiling OrderedCollections OrderedSet+Codable.swift
[113/145] Compiling OrderedCollections OrderedSet+CustomReflectable.swift
[114/145] Compiling OrderedCollections OrderedSet+Descriptions.swift
[115/145] Compiling OrderedCollections OrderedSet+Diffing.swift
[116/145] Compiling OrderedCollections OrderedSet+Equatable.swift
[117/145] Compiling OrderedCollections OrderedSet+ExpressibleByArrayLiteral.swift
[118/145] Compiling OrderedCollections OrderedSet+Hashable.swift
[118/145] Wrapping AST for IssueReportingTestSupport for debugging
[119/145] Write Objects.LinkFileList
[121/181] Compiling PerceptionCore Perceptible.swift
[122/181] Compiling PerceptionCore PerceptionChecking.swift
[126/181] Compiling OrderedCollections OrderedDictionary+Elements.swift
[127/181] Compiling OrderedCollections OrderedDictionary+Equatable.swift
[129/181] Compiling Clocks Timer.swift
error: dynamic libraries are unsupported for target 'wasm32-unknown-wasi'
[129/182] Linking libIssueReportingTestSupport.wasm
[130/182] Compiling CombineSchedulers UIScheduler.swift
[131/182] Compiling CombineSchedulers Lock.swift
[132/182] Compiling CombineSchedulers NSRecursiveLock.swift
[133/182] Emitting module CombineSchedulers
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:wasm-6.1-latest swift build --swift-sdk wasm32-unknown-wasi 2>&1
wasm-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:7e37457820e5f17452a98118754f345f2619722c485f2db0d8b666940a83afd2
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:wasm-6.1-latest
[0/1] Planning build
[1/1] Compiling plugin Swift-DocC Preview
[2/2] Compiling plugin Swift-DocC
Building for debugging...
[2/6] Write swift-version-24593BA9C3E375BF.txt
[4/57] Emitting module Sharing1
[5/57] Compiling IssueReportingTestSupport XCTest.swift
[6/57] Emitting module IssueReportingTestSupport
[7/57] Compiling IssueReportingTestSupport SwiftTesting.swift
[8/57] Compiling Sharing1 Empty.swift
[11/59] Compiling Sharing2 Empty.swift
[12/59] Emitting module Sharing2
[13/59] Write Objects.LinkFileList
error: dynamic libraries are unsupported for target 'wasm32-unknown-wasi'
[14/59] Linking libIssueReportingTestSupport.wasm
[15/59] Compiling ConcurrencyExtras MainSerialExecutor.swift
[16/59] Emitting module ConcurrencyExtras
BUILD FAILURE 6.1 wasm