The Swift Package Index logo.Swift Package Index

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

Build Information

Successful build of Embassy, reference master (8469f2), with Swift 6.1 for Linux on 27 Apr 2025 09:05:44 UTC.

Swift 6 data race errors: 0

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-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

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/envoy/Embassy.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/envoy/Embassy
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 8469f2c Merge pull request #106 from mahyarwd/fix-4.1.5-build-error
Cloned https://github.com/envoy/Embassy.git
Revision (git rev-parse @):
8469f2c1b334a7c1c3566e2cb2f97826c7cca898
SUCCESS checkout https://github.com/envoy/Embassy.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/envoy/Embassy.git
https://github.com/envoy/Embassy.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Embassy",
  "name" : "Embassy",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Embassy",
      "targets" : [
        "Embassy"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Embassy",
      "module_type" : "SwiftTarget",
      "name" : "Embassy",
      "path" : "Sources",
      "product_memberships" : [
        "Embassy"
      ],
      "sources" : [
        "Atomic.swift",
        "DefaultHTTPServer.swift",
        "DefaultLogFormatter.swift",
        "DefaultLogger.swift",
        "Errors.swift",
        "EventLoop.swift",
        "FileLogHandler.swift",
        "HTTPConnection.swift",
        "HTTPHeaderParser.swift",
        "HTTPRequest.swift",
        "HTTPServer.swift",
        "HeapSort.swift",
        "IOUtils.swift",
        "KqueueSelector.swift",
        "LogFormatter.swift",
        "LogHandler.swift",
        "Logger.swift",
        "MultiDictionary.swift",
        "PrintLogHandler.swift",
        "PropagateLogHandler.swift",
        "SWSGI.swift",
        "SWSGIUtils.swift",
        "SelectSelector.swift",
        "Selector.swift",
        "SelectorEventLoop.swift",
        "SystemLibrary.swift",
        "TCPSocket.swift",
        "TransformLogHandler.swift",
        "Transport.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.2"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-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-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/29] Emitting module Embassy
[4/32] Compiling Embassy TCPSocket.swift
/host/spi-builder-workspace/Sources/TCPSocket.swift:291:17: warning: forming 'UnsafeRawPointer' to a variable of type 'StructType'; this is likely incorrect because 'StructType' may contain an object reference.
289 |             inet_ntop(
290 |                 family,
291 |                 &addrStruct,
    |                 `- warning: forming 'UnsafeRawPointer' to a variable of type 'StructType'; this is likely incorrect because 'StructType' may contain an object reference.
292 |                 pointer,
293 |                 socklen_t(addressLength)
[5/32] Compiling Embassy TransformLogHandler.swift
/host/spi-builder-workspace/Sources/TCPSocket.swift:291:17: warning: forming 'UnsafeRawPointer' to a variable of type 'StructType'; this is likely incorrect because 'StructType' may contain an object reference.
289 |             inet_ntop(
290 |                 family,
291 |                 &addrStruct,
    |                 `- warning: forming 'UnsafeRawPointer' to a variable of type 'StructType'; this is likely incorrect because 'StructType' may contain an object reference.
292 |                 pointer,
293 |                 socklen_t(addressLength)
[6/32] Compiling Embassy Transport.swift
/host/spi-builder-workspace/Sources/TCPSocket.swift:291:17: warning: forming 'UnsafeRawPointer' to a variable of type 'StructType'; this is likely incorrect because 'StructType' may contain an object reference.
289 |             inet_ntop(
290 |                 family,
291 |                 &addrStruct,
    |                 `- warning: forming 'UnsafeRawPointer' to a variable of type 'StructType'; this is likely incorrect because 'StructType' may contain an object reference.
292 |                 pointer,
293 |                 socklen_t(addressLength)
[7/32] Compiling Embassy Atomic.swift
[8/32] Compiling Embassy DefaultHTTPServer.swift
[9/32] Compiling Embassy DefaultLogFormatter.swift
[10/32] Compiling Embassy DefaultLogger.swift
[11/32] Compiling Embassy HTTPHeaderParser.swift
[12/32] Compiling Embassy HTTPRequest.swift
[13/32] Compiling Embassy HTTPServer.swift
[14/32] Compiling Embassy HeapSort.swift
[15/32] Compiling Embassy Selector.swift
[16/32] Compiling Embassy SelectorEventLoop.swift
[17/32] Compiling Embassy SystemLibrary.swift
[18/32] Compiling Embassy IOUtils.swift
[19/32] Compiling Embassy KqueueSelector.swift
[20/32] Compiling Embassy LogFormatter.swift
[21/32] Compiling Embassy LogHandler.swift
[22/32] Compiling Embassy SWSGI.swift
[23/32] Compiling Embassy SWSGIUtils.swift
[24/32] Compiling Embassy SelectSelector.swift
[25/32] Compiling Embassy Logger.swift
[26/32] Compiling Embassy MultiDictionary.swift
[27/32] Compiling Embassy PrintLogHandler.swift
[28/32] Compiling Embassy PropagateLogHandler.swift
[29/32] Compiling Embassy Errors.swift
/host/spi-builder-workspace/Sources/FileLogHandler.swift:29:32: warning: capture of 'self' with non-sendable type 'FileLogHandler' in a '@Sendable' closure; this is an error in the Swift 6 language mode
11 |
12 | /// A log handler which writes log records to given file handle
13 | public struct FileLogHandler: LogHandler {
   |               `- note: consider making struct 'FileLogHandler' conform to the 'Sendable' protocol
14 |     let fileHandle: FileHandle
15 |     public var formatter: LogFormatter?
   :
27 |     public func emit(record: LogRecord) {
28 |         queue.async {
29 |             if let formatter = self.formatter {
   |                                `- warning: capture of 'self' with non-sendable type 'FileLogHandler' in a '@Sendable' closure; this is an error in the Swift 6 language mode
30 |                 let msg = formatter.format(record: record) + "\n"
31 |                 self.fileHandle.write(msg.data(using: String.Encoding.utf8)!)
/host/spi-builder-workspace/Sources/FileLogHandler.swift:30:52: warning: capture of 'record' with non-sendable type 'LogRecord' in a '@Sendable' closure; this is an error in the Swift 6 language mode
28 |         queue.async {
29 |             if let formatter = self.formatter {
30 |                 let msg = formatter.format(record: record) + "\n"
   |                                                    `- warning: capture of 'record' with non-sendable type 'LogRecord' in a '@Sendable' closure; this is an error in the Swift 6 language mode
31 |                 self.fileHandle.write(msg.data(using: String.Encoding.utf8)!)
32 |                 self.fileHandle.synchronizeFile()
/host/spi-builder-workspace/Sources/Logger.swift:37:15: note: consider making struct 'LogRecord' conform to the 'Sendable' protocol
35 | }
36 |
37 | public struct LogRecord {
   |               `- note: consider making struct 'LogRecord' conform to the 'Sendable' protocol
38 |     let loggerName: String
39 |     let level: LogLevel
[30/32] Compiling Embassy EventLoop.swift
/host/spi-builder-workspace/Sources/FileLogHandler.swift:29:32: warning: capture of 'self' with non-sendable type 'FileLogHandler' in a '@Sendable' closure; this is an error in the Swift 6 language mode
11 |
12 | /// A log handler which writes log records to given file handle
13 | public struct FileLogHandler: LogHandler {
   |               `- note: consider making struct 'FileLogHandler' conform to the 'Sendable' protocol
14 |     let fileHandle: FileHandle
15 |     public var formatter: LogFormatter?
   :
27 |     public func emit(record: LogRecord) {
28 |         queue.async {
29 |             if let formatter = self.formatter {
   |                                `- warning: capture of 'self' with non-sendable type 'FileLogHandler' in a '@Sendable' closure; this is an error in the Swift 6 language mode
30 |                 let msg = formatter.format(record: record) + "\n"
31 |                 self.fileHandle.write(msg.data(using: String.Encoding.utf8)!)
/host/spi-builder-workspace/Sources/FileLogHandler.swift:30:52: warning: capture of 'record' with non-sendable type 'LogRecord' in a '@Sendable' closure; this is an error in the Swift 6 language mode
28 |         queue.async {
29 |             if let formatter = self.formatter {
30 |                 let msg = formatter.format(record: record) + "\n"
   |                                                    `- warning: capture of 'record' with non-sendable type 'LogRecord' in a '@Sendable' closure; this is an error in the Swift 6 language mode
31 |                 self.fileHandle.write(msg.data(using: String.Encoding.utf8)!)
32 |                 self.fileHandle.synchronizeFile()
/host/spi-builder-workspace/Sources/Logger.swift:37:15: note: consider making struct 'LogRecord' conform to the 'Sendable' protocol
35 | }
36 |
37 | public struct LogRecord {
   |               `- note: consider making struct 'LogRecord' conform to the 'Sendable' protocol
38 |     let loggerName: String
39 |     let level: LogLevel
[31/32] Compiling Embassy FileLogHandler.swift
/host/spi-builder-workspace/Sources/FileLogHandler.swift:29:32: warning: capture of 'self' with non-sendable type 'FileLogHandler' in a '@Sendable' closure; this is an error in the Swift 6 language mode
11 |
12 | /// A log handler which writes log records to given file handle
13 | public struct FileLogHandler: LogHandler {
   |               `- note: consider making struct 'FileLogHandler' conform to the 'Sendable' protocol
14 |     let fileHandle: FileHandle
15 |     public var formatter: LogFormatter?
   :
27 |     public func emit(record: LogRecord) {
28 |         queue.async {
29 |             if let formatter = self.formatter {
   |                                `- warning: capture of 'self' with non-sendable type 'FileLogHandler' in a '@Sendable' closure; this is an error in the Swift 6 language mode
30 |                 let msg = formatter.format(record: record) + "\n"
31 |                 self.fileHandle.write(msg.data(using: String.Encoding.utf8)!)
/host/spi-builder-workspace/Sources/FileLogHandler.swift:30:52: warning: capture of 'record' with non-sendable type 'LogRecord' in a '@Sendable' closure; this is an error in the Swift 6 language mode
28 |         queue.async {
29 |             if let formatter = self.formatter {
30 |                 let msg = formatter.format(record: record) + "\n"
   |                                                    `- warning: capture of 'record' with non-sendable type 'LogRecord' in a '@Sendable' closure; this is an error in the Swift 6 language mode
31 |                 self.fileHandle.write(msg.data(using: String.Encoding.utf8)!)
32 |                 self.fileHandle.synchronizeFile()
/host/spi-builder-workspace/Sources/Logger.swift:37:15: note: consider making struct 'LogRecord' conform to the 'Sendable' protocol
35 | }
36 |
37 | public struct LogRecord {
   |               `- note: consider making struct 'LogRecord' conform to the 'Sendable' protocol
38 |     let loggerName: String
39 |     let level: LogLevel
[32/32] Compiling Embassy HTTPConnection.swift
/host/spi-builder-workspace/Sources/FileLogHandler.swift:29:32: warning: capture of 'self' with non-sendable type 'FileLogHandler' in a '@Sendable' closure; this is an error in the Swift 6 language mode
11 |
12 | /// A log handler which writes log records to given file handle
13 | public struct FileLogHandler: LogHandler {
   |               `- note: consider making struct 'FileLogHandler' conform to the 'Sendable' protocol
14 |     let fileHandle: FileHandle
15 |     public var formatter: LogFormatter?
   :
27 |     public func emit(record: LogRecord) {
28 |         queue.async {
29 |             if let formatter = self.formatter {
   |                                `- warning: capture of 'self' with non-sendable type 'FileLogHandler' in a '@Sendable' closure; this is an error in the Swift 6 language mode
30 |                 let msg = formatter.format(record: record) + "\n"
31 |                 self.fileHandle.write(msg.data(using: String.Encoding.utf8)!)
/host/spi-builder-workspace/Sources/FileLogHandler.swift:30:52: warning: capture of 'record' with non-sendable type 'LogRecord' in a '@Sendable' closure; this is an error in the Swift 6 language mode
28 |         queue.async {
29 |             if let formatter = self.formatter {
30 |                 let msg = formatter.format(record: record) + "\n"
   |                                                    `- warning: capture of 'record' with non-sendable type 'LogRecord' in a '@Sendable' closure; this is an error in the Swift 6 language mode
31 |                 self.fileHandle.write(msg.data(using: String.Encoding.utf8)!)
32 |                 self.fileHandle.synchronizeFile()
/host/spi-builder-workspace/Sources/Logger.swift:37:15: note: consider making struct 'LogRecord' conform to the 'Sendable' protocol
35 | }
36 |
37 | public struct LogRecord {
   |               `- note: consider making struct 'LogRecord' conform to the 'Sendable' protocol
38 |     let loggerName: String
39 |     let level: LogLevel
Build complete! (8.86s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Embassy",
  "name" : "Embassy",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Embassy",
      "targets" : [
        "Embassy"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Embassy",
      "module_type" : "SwiftTarget",
      "name" : "Embassy",
      "path" : "Sources",
      "product_memberships" : [
        "Embassy"
      ],
      "sources" : [
        "Atomic.swift",
        "DefaultHTTPServer.swift",
        "DefaultLogFormatter.swift",
        "DefaultLogger.swift",
        "Errors.swift",
        "EventLoop.swift",
        "FileLogHandler.swift",
        "HTTPConnection.swift",
        "HTTPHeaderParser.swift",
        "HTTPRequest.swift",
        "HTTPServer.swift",
        "HeapSort.swift",
        "IOUtils.swift",
        "KqueueSelector.swift",
        "LogFormatter.swift",
        "LogHandler.swift",
        "Logger.swift",
        "MultiDictionary.swift",
        "PrintLogHandler.swift",
        "PropagateLogHandler.swift",
        "SWSGI.swift",
        "SWSGIUtils.swift",
        "SelectSelector.swift",
        "Selector.swift",
        "SelectorEventLoop.swift",
        "SystemLibrary.swift",
        "TCPSocket.swift",
        "TransformLogHandler.swift",
        "Transport.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.2"
}
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Done.