Swift Package IndexBuild Information
Failed to build SwiftCustomLogger, reference master (5eea14), with Swift 6.3 for Wasm on 16 Apr 2026 02:38:15 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/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-6.3-latest swift build --swift-sdk swift-6.3-RELEASE_wasm 2>&1Build Log
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RunAll
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Builder version: 4.70.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/nerzh/swift-custom-logger.git
Reference: master
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/nerzh/swift-custom-logger
* branch master -> FETCH_HEAD
* [new branch] master -> origin/master
HEAD is now at 5eea143 Merge pull request #1 from makoni/master
Cloned https://github.com/nerzh/swift-custom-logger.git
Revision (git rev-parse @):
5eea143e6674a7a263b96cdf51e4db8bad07820c
SUCCESS checkout https://github.com/nerzh/swift-custom-logger.git at master
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Build
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Selected platform: wasm
Swift version: 6.3
Building package at path: $PWD
https://github.com/nerzh/swift-custom-logger.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest swift build --swift-sdk swift-6.3-RELEASE_wasm 2>&1
wasm-6.3-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:d69f4e7582c319245442d62a08b2d7c7fd5a0c0c69f5d2ef11d1530cd8d3329b
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest
Fetching https://github.com/apple/swift-log
[1/6583] Fetching swift-log
Fetched https://github.com/apple/swift-log from cache (1.24s)
Computing version for https://github.com/apple/swift-log
Computed https://github.com/apple/swift-log at 1.12.0 (1.72s)
Creating working copy for https://github.com/apple/swift-log
Working copy of https://github.com/apple/swift-log resolved at 1.12.0
Building for debugging...
[0/3] Write sources
[2/3] Write swift-version-24593BA9C3E375BF.txt
[4/9] Compiling Logging MetadataProvider.swift
[5/9] Compiling Logging LogHandler.swift
[6/9] Compiling Logging Locks.swift
[7/9] Compiling Logging LogEvent.swift
[8/9] Emitting module Logging
[9/9] Compiling Logging Logging.swift
[11/15] Compiling SwiftCustomLogger Printer.swift
/host/spi-builder-workspace/Sources/SwiftCustomLogger/Printer.swift:51:43: error: cannot find type 'FILE' in scope
49 | private struct OutputStream: TextOutputStream {
50 |
51 | public let file: UnsafeMutablePointer<FILE>
| `- error: cannot find type 'FILE' in scope
52 |
53 | public func write(_ string: String) {
/host/spi-builder-workspace/Sources/SwiftCustomLogger/Printer.swift:55:13: error: cannot find 'flockfile' in scope
53 | public func write(_ string: String) {
54 | string.withCString { ptr in
55 | flockfile(file)
| `- error: cannot find 'flockfile' in scope
56 | defer { funlockfile(file) }
57 | _ = fputs(ptr, file)
[12/15] Compiling SwiftCustomLogger LogFormatter.swift
[13/15] Compiling SwiftCustomLogger BasicFormatter.swift
[14/15] Compiling SwiftCustomLogger CustomHandler.swift
/host/spi-builder-workspace/Sources/SwiftCustomLogger/CustomHandler.swift:4:15: warning: deprecated default implementation is used to satisfy instance method 'log(event:)' required by protocol 'LogHandler': You should implement this method instead of using the default implementation [#DeprecatedDeclaration]
2 | import Logging
3 |
4 | public struct CustomHandler: LogHandler {
| `- warning: deprecated default implementation is used to satisfy instance method 'log(event:)' required by protocol 'LogHandler': You should implement this method instead of using the default implementation [#DeprecatedDeclaration]
5 |
6 | public let formatter: LogFormatter
/host/spi-builder-workspace/.build/checkouts/swift-log/Sources/Logging/LogHandler.swift:256:17: note: 'log(event:)' declared here
143 | ///
144 | /// - Parameter event: The log event containing the level, message, metadata, and source location.
145 | func log(event: LogEvent)
| `- note: requirement 'log(event:)' declared here
146 |
147 | /// Please do _not_ implement this method when you create a `LogHandler` implementation.
:
254 | /// Implement ``log(event:)`` in your ``LogHandler`` instead.
255 | @available(*, deprecated, message: "You should implement this method instead of using the default implementation")
256 | public func log(event: LogEvent) {
| `- note: 'log(event:)' declared here
257 | self.log(
258 | level: event.level,
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
error: emit-module command failed with exit code 1 (use -v to see invocation)
[15/15] Emitting module SwiftCustomLogger
/host/spi-builder-workspace/Sources/SwiftCustomLogger/CustomHandler.swift:4:15: warning: deprecated default implementation is used to satisfy instance method 'log(event:)' required by protocol 'LogHandler': You should implement this method instead of using the default implementation [#DeprecatedDeclaration]
2 | import Logging
3 |
4 | public struct CustomHandler: LogHandler {
| `- warning: deprecated default implementation is used to satisfy instance method 'log(event:)' required by protocol 'LogHandler': You should implement this method instead of using the default implementation [#DeprecatedDeclaration]
5 |
6 | public let formatter: LogFormatter
/host/spi-builder-workspace/.build/checkouts/swift-log/Sources/Logging/LogHandler.swift:256:17: note: 'log(event:)' declared here
143 | ///
144 | /// - Parameter event: The log event containing the level, message, metadata, and source location.
145 | func log(event: LogEvent)
| `- note: requirement 'log(event:)' declared here
146 |
147 | /// Please do _not_ implement this method when you create a `LogHandler` implementation.
:
254 | /// Implement ``log(event:)`` in your ``LogHandler`` instead.
255 | @available(*, deprecated, message: "You should implement this method instead of using the default implementation")
256 | public func log(event: LogEvent) {
| `- note: 'log(event:)' declared here
257 | self.log(
258 | level: event.level,
/host/spi-builder-workspace/Sources/SwiftCustomLogger/Printer.swift:51:43: error: cannot find type 'FILE' in scope
49 | private struct OutputStream: TextOutputStream {
50 |
51 | public let file: UnsafeMutablePointer<FILE>
| `- error: cannot find type 'FILE' in scope
52 |
53 | public func write(_ string: String) {
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
BUILD FAILURE 6.3 wasm