Swift Package IndexBuild Information
Failed to build swift-copying, reference main (c205a4), with Swift 6.2 for Wasm on 29 Jan 2026 05:08:32 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/finestructure/spi-images:wasm-6.2-latest swift build --swift-sdk wasm32-unknown-wasip1 2>&1Build Log
========================================
RunAll
========================================
Builder version: 4.68.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/yysskk/swift-copying.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/yysskk/swift-copying
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at c205a4c Merge pull request #5 from yysskk/feat/support-actor
Cloned https://github.com/yysskk/swift-copying.git
Revision (git rev-parse @):
c205a4c099493029e552b98d2af9639d5db5e30b
SUCCESS checkout https://github.com/yysskk/swift-copying.git at main
========================================
Build
========================================
Selected platform: wasm
Swift version: 6.2
Building package at path: $PWD
https://github.com/yysskk/swift-copying.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/finestructure/spi-images:wasm-6.2-latest swift build --swift-sdk wasm32-unknown-wasip1 2>&1
wasm-6.2-latest: Pulling from finestructure/spi-images
Digest: sha256:c50555b47c4db0b0576f9f25702fbe2fdff28194c4a4f4c23a7dce4b3504c85e
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:wasm-6.2-latest
warning: multiple Swift SDKs match target triple `wasm32-unknown-wasip1` and host triple x86_64-unknown-linux-gnu, selected one at /root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/embedded-swift-sdk.json
Fetching https://github.com/swiftlang/swift-syntax.git
[1/73898] Fetching swift-syntax
Fetched https://github.com/swiftlang/swift-syntax.git from cache (4.56s)
Computing version for https://github.com/swiftlang/swift-syntax.git
Computed https://github.com/swiftlang/swift-syntax.git at 602.0.0 (6.84s)
Creating working copy for https://github.com/swiftlang/swift-syntax.git
Working copy of https://github.com/swiftlang/swift-syntax.git resolved at 602.0.0
Downloading package prebuilt https://download.swift.org/prebuilts/swift-syntax/602.0.0/swift-6.2-RELEASE-MacroSupport-ubuntu_jammy_x86_64.tar.gz
Downloaded https://download.swift.org/prebuilts/swift-syntax/602.0.0/swift-6.2-RELEASE-MacroSupport-ubuntu_jammy_x86_64.tar.gz (0.83s)
Building for debugging...
[0/12] Write sources
[4/12] Write swift-version-24593BA9C3E375BF.txt
[6/14] Emitting module CopyingMacros
[7/14] Compiling CopyingMacros CopyingMacro.swift
[8/15] Wrapping AST for CopyingMacros for debugging
[9/15] Write Objects.LinkFileList
[10/15] Linking CopyingMacros-tool
[12/19] Compiling Copying Copying.swift
[13/19] Emitting module Copying
[16/20] Compiling Copying Copying.swift
[17/21] Wrapping AST for Copying for debugging
error: emit-module command failed with exit code 1 (use -v to see invocation)
[19/23] Emitting module CopyingClient
/host/spi-builder-workspace/Sources/CopyingClient/main.swift:39:5: error: let 'user' is not concurrency-safe because non-'Sendable' type 'User' may have shared mutable state [#MutableGlobalVariable]
11 | // Example with class
12 | @Copying
13 | class User {
| `- note: class 'User' does not conform to the 'Sendable' protocol
14 | let id: Int
15 | let username: String
:
37 |
38 | // Class example
39 | let user = User(id: 1, username: "johndoe", isActive: true)
| |- error: let 'user' is not concurrency-safe because non-'Sendable' type 'User' may have shared mutable state [#MutableGlobalVariable]
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
40 | print("\nOriginal user: id=\(user.id), username=\(user.username), isActive=\(user.isActive)")
41 |
/host/spi-builder-workspace/Sources/CopyingClient/main.swift:42:5: error: let 'inactiveUser' is not concurrency-safe because non-'Sendable' type 'User' may have shared mutable state [#MutableGlobalVariable]
11 | // Example with class
12 | @Copying
13 | class User {
| `- note: class 'User' does not conform to the 'Sendable' protocol
14 | let id: Int
15 | let username: String
:
40 | print("\nOriginal user: id=\(user.id), username=\(user.username), isActive=\(user.isActive)")
41 |
42 | let inactiveUser = user.copying(isActive: false)
| |- error: let 'inactiveUser' is not concurrency-safe because non-'Sendable' type 'User' may have shared mutable state [#MutableGlobalVariable]
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
43 | print("Inactive user: id=\(inactiveUser.id), username=\(inactiveUser.username), isActive=\(inactiveUser.isActive)")
44 |
[#MutableGlobalVariable]: <https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable>
[20/23] Compiling CopyingClient main.swift
/host/spi-builder-workspace/Sources/CopyingClient/main.swift:39:5: error: let 'user' is not concurrency-safe because non-'Sendable' type 'User' may have shared mutable state [#MutableGlobalVariable]
11 | // Example with class
12 | @Copying
13 | class User {
| `- note: class 'User' does not conform to the 'Sendable' protocol
14 | let id: Int
15 | let username: String
:
37 |
38 | // Class example
39 | let user = User(id: 1, username: "johndoe", isActive: true)
| |- error: let 'user' is not concurrency-safe because non-'Sendable' type 'User' may have shared mutable state [#MutableGlobalVariable]
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
40 | print("\nOriginal user: id=\(user.id), username=\(user.username), isActive=\(user.isActive)")
41 |
/host/spi-builder-workspace/Sources/CopyingClient/main.swift:42:5: error: let 'inactiveUser' is not concurrency-safe because non-'Sendable' type 'User' may have shared mutable state [#MutableGlobalVariable]
11 | // Example with class
12 | @Copying
13 | class User {
| `- note: class 'User' does not conform to the 'Sendable' protocol
14 | let id: Int
15 | let username: String
:
40 | print("\nOriginal user: id=\(user.id), username=\(user.username), isActive=\(user.isActive)")
41 |
42 | let inactiveUser = user.copying(isActive: false)
| |- error: let 'inactiveUser' is not concurrency-safe because non-'Sendable' type 'User' may have shared mutable state [#MutableGlobalVariable]
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
43 | print("Inactive user: id=\(inactiveUser.id), username=\(inactiveUser.username), isActive=\(inactiveUser.isActive)")
44 |
[#MutableGlobalVariable]: <https://docs.swift.org/compiler/documentation/diagnostics/mutable-global-variable>
BUILD FAILURE 6.2 wasm