Swift Package Index

Build Information

Failed to build AsyncSequenceReader, reference main (cf213b), with Swift 6.2 for Wasm on 1 May 2026 15:32:32 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-3":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.2-latest swift build --swift-sdk swift-6.2-RELEASE_wasm 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/mochidev/AsyncSequenceReader.git
Reference: main
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/mochidev/AsyncSequenceReader
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at cf213b3 Updated `AsyncIteratorMapSequence` to use typed throws
Cloned https://github.com/mochidev/AsyncSequenceReader.git
Revision (git rev-parse @):
cf213b30f1289ac972c7eb6bdfd1bd46f5a59975
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/mochidev/AsyncSequenceReader.git at main
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.2
Building package at path:  $PWD
https://github.com/mochidev/AsyncSequenceReader.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-3":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.2-latest swift build --swift-sdk swift-6.2-RELEASE_wasm 2>&1
wasm-6.2-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:2a8b2d9e022a9894c61e0736af7cdaa1ee64c002dbb133a55c0d7e8980b3ad16
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.2-latest
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/11] Compiling AsyncSequenceReader AsyncSequenceReader.swift
[4/12] Compiling AsyncSequenceReader AsyncIteratorProtocol+Isolated.swift
error: emit-module command failed with exit code 1 (use -v to see invocation)
[5/12] Compiling AsyncSequenceReader AsyncIteratorMapSequence.swift
[6/12] Compiling AsyncSequenceReader AsyncReadSequence.swift
[7/12] Emitting module AsyncSequenceReader
/host/spi-builder-workspace/Sources/AsyncSequenceReader/AnyReadableSequence.swift:69:20: error: cannot convert '@Sendable () async -> Element?' to 'nonisolated(nonsending) @Sendable () async throws(Failure) -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
 67 |             nonisolated(unsafe) var iterator = sequence.makeIterator()
 68 |
 69 |             return { iterator.next() }
    |                    |- error: cannot convert '@Sendable () async -> Element?' to 'nonisolated(nonsending) @Sendable () async throws(Failure) -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
    |                    `- note: type 'Element' does not conform to 'Sendable' protocol
 70 |         }
 71 |     }
/host/spi-builder-workspace/Sources/AsyncSequenceReader/AnyReadableSequence.swift:79:20: error: cannot convert '@Sendable () async -> Element?' to 'nonisolated(nonsending) @Sendable () async -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
 77 |             nonisolated(unsafe) var iterator = sequence.makeIterator()
 78 |
 79 |             return { iterator.next() }
    |                    |- error: cannot convert '@Sendable () async -> Element?' to 'nonisolated(nonsending) @Sendable () async -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
    |                    `- note: type 'Element' does not conform to 'Sendable' protocol
 80 |         }
 81 |     }
/host/spi-builder-workspace/Sources/AsyncSequenceReader/AnyReadableSequence.swift:90:20: error: cannot convert '@Sendable () async throws -> Element?' to 'nonisolated(nonsending) @Sendable () async throws -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
 88 |             nonisolated(unsafe) var iterator = sequence.makeAsyncIterator()
 89 |
 90 |             return { try await iterator.next() }
    |                    |- error: cannot convert '@Sendable () async throws -> Element?' to 'nonisolated(nonsending) @Sendable () async throws -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
    |                    `- note: type 'Element' does not conform to 'Sendable' protocol
 91 |         }
 92 |     }
/host/spi-builder-workspace/Sources/AsyncSequenceReader/AnyReadableSequence.swift:101:20: error: cannot convert '@Sendable () async throws(Failure) -> Element?' to 'nonisolated(nonsending) @Sendable () async throws(Failure) -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
 99 |             nonisolated(unsafe) var iterator = sequence.makeAsyncIterator()
100 |
101 |             return { () throws(Failure) -> Element? in
    |                    |- error: cannot convert '@Sendable () async throws(Failure) -> Element?' to 'nonisolated(nonsending) @Sendable () async throws(Failure) -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
    |                    `- note: type 'Element' does not conform to 'Sendable' protocol
102 |                 try await iterator.next(isolation: #isolation)
103 |             }
[8/12] Compiling AsyncSequenceReader AnyReadableSequence.swift
/host/spi-builder-workspace/Sources/AsyncSequenceReader/AnyReadableSequence.swift:69:20: error: cannot convert '@Sendable () async -> Element?' to 'nonisolated(nonsending) @Sendable () async throws(Failure) -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
 67 |             nonisolated(unsafe) var iterator = sequence.makeIterator()
 68 |
 69 |             return { iterator.next() }
    |                    |- error: cannot convert '@Sendable () async -> Element?' to 'nonisolated(nonsending) @Sendable () async throws(Failure) -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
    |                    `- note: type 'Element' does not conform to 'Sendable' protocol
 70 |         }
 71 |     }
/host/spi-builder-workspace/Sources/AsyncSequenceReader/AnyReadableSequence.swift:79:20: error: cannot convert '@Sendable () async -> Element?' to 'nonisolated(nonsending) @Sendable () async -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
 77 |             nonisolated(unsafe) var iterator = sequence.makeIterator()
 78 |
 79 |             return { iterator.next() }
    |                    |- error: cannot convert '@Sendable () async -> Element?' to 'nonisolated(nonsending) @Sendable () async -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
    |                    `- note: type 'Element' does not conform to 'Sendable' protocol
 80 |         }
 81 |     }
/host/spi-builder-workspace/Sources/AsyncSequenceReader/AnyReadableSequence.swift:90:20: error: cannot convert '@Sendable () async throws -> Element?' to 'nonisolated(nonsending) @Sendable () async throws -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
 88 |             nonisolated(unsafe) var iterator = sequence.makeAsyncIterator()
 89 |
 90 |             return { try await iterator.next() }
    |                    |- error: cannot convert '@Sendable () async throws -> Element?' to 'nonisolated(nonsending) @Sendable () async throws -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
    |                    `- note: type 'Element' does not conform to 'Sendable' protocol
 91 |         }
 92 |     }
/host/spi-builder-workspace/Sources/AsyncSequenceReader/AnyReadableSequence.swift:101:20: error: cannot convert '@Sendable () async throws(Failure) -> Element?' to 'nonisolated(nonsending) @Sendable () async throws(Failure) -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
 99 |             nonisolated(unsafe) var iterator = sequence.makeAsyncIterator()
100 |
101 |             return { () throws(Failure) -> Element? in
    |                    |- error: cannot convert '@Sendable () async throws(Failure) -> Element?' to 'nonisolated(nonsending) @Sendable () async throws(Failure) -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
    |                    `- note: type 'Element' does not conform to 'Sendable' protocol
102 |                 try await iterator.next(isolation: #isolation)
103 |             }
[9/12] Compiling AsyncSequenceReader AsyncBufferedIterator.swift
/host/spi-builder-workspace/Sources/AsyncSequenceReader/AnyReadableSequence.swift:69:20: error: cannot convert '@Sendable () async -> Element?' to 'nonisolated(nonsending) @Sendable () async throws(Failure) -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
 67 |             nonisolated(unsafe) var iterator = sequence.makeIterator()
 68 |
 69 |             return { iterator.next() }
    |                    |- error: cannot convert '@Sendable () async -> Element?' to 'nonisolated(nonsending) @Sendable () async throws(Failure) -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
    |                    `- note: type 'Element' does not conform to 'Sendable' protocol
 70 |         }
 71 |     }
/host/spi-builder-workspace/Sources/AsyncSequenceReader/AnyReadableSequence.swift:79:20: error: cannot convert '@Sendable () async -> Element?' to 'nonisolated(nonsending) @Sendable () async -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
 77 |             nonisolated(unsafe) var iterator = sequence.makeIterator()
 78 |
 79 |             return { iterator.next() }
    |                    |- error: cannot convert '@Sendable () async -> Element?' to 'nonisolated(nonsending) @Sendable () async -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
    |                    `- note: type 'Element' does not conform to 'Sendable' protocol
 80 |         }
 81 |     }
/host/spi-builder-workspace/Sources/AsyncSequenceReader/AnyReadableSequence.swift:90:20: error: cannot convert '@Sendable () async throws -> Element?' to 'nonisolated(nonsending) @Sendable () async throws -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
 88 |             nonisolated(unsafe) var iterator = sequence.makeAsyncIterator()
 89 |
 90 |             return { try await iterator.next() }
    |                    |- error: cannot convert '@Sendable () async throws -> Element?' to 'nonisolated(nonsending) @Sendable () async throws -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
    |                    `- note: type 'Element' does not conform to 'Sendable' protocol
 91 |         }
 92 |     }
/host/spi-builder-workspace/Sources/AsyncSequenceReader/AnyReadableSequence.swift:101:20: error: cannot convert '@Sendable () async throws(Failure) -> Element?' to 'nonisolated(nonsending) @Sendable () async throws(Failure) -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
 99 |             nonisolated(unsafe) var iterator = sequence.makeAsyncIterator()
100 |
101 |             return { () throws(Failure) -> Element? in
    |                    |- error: cannot convert '@Sendable () async throws(Failure) -> Element?' to 'nonisolated(nonsending) @Sendable () async throws(Failure) -> Element?' because crossing of an isolation boundary requires parameter and result types to conform to 'Sendable' protocol
    |                    `- note: type 'Element' does not conform to 'Sendable' protocol
102 |                 try await iterator.next(isolation: #isolation)
103 |             }
[10/12] Compiling AsyncSequenceReader AsyncReadUpToCountSequence.swift
[11/12] Compiling AsyncSequenceReader AsyncReadUpToElementsSequence.swift
[12/12] Compiling AsyncSequenceReader AsyncSequenceReaderError.swift
BUILD FAILURE 6.2 wasm