Swift Package IndexBuild Information
Failed to build Realtime, reference main (5ea1fd), with Swift 6.3 for Linux on 20 Apr 2026 18:27:51 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/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:basic-6.3-latest swift build --triple x86_64-unknown-linux-gnu 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/supabase-community/realtime-swift.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/supabase-community/realtime-swift
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at 5ea1fd2 Update README.md
Cloned https://github.com/supabase-community/realtime-swift.git
Revision (git rev-parse @):
5ea1fd24469191d5dd7421d3dbf42c88c5c0d5ba
SUCCESS checkout https://github.com/supabase-community/realtime-swift.git at main
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Build
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Selected platform: linux
Swift version: 6.3
Building package at path: $PWD
https://github.com/supabase-community/realtime-swift.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:basic-6.3-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.3-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:5a7d791d2ead8a924b1292cb31bf3288eabcfe8880e0b005b00b45b71a5bc36a
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:basic-6.3-latest
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/13] Compiling Realtime TimeoutTimer.swift
[4/13] Compiling Realtime StateChangeCallbacks.swift
[5/13] Compiling Realtime SocketError.swift
[6/14] Compiling Realtime Message.swift
[7/14] Compiling Realtime Push.swift
[8/14] Compiling Realtime Delegated.swift
error: emit-module command failed with exit code 1 (use -v to see invocation)
[9/14] Compiling Realtime HeartbeatTimer.swift
[10/14] Emitting module Realtime
/host/spi-builder-workspace/Sources/Realtime/RealtimeClient.swift:715:4: error: Objective-C interoperability is disabled
713 |
714 | /// Sends a hearbeat payload to the phoenix serverss
715 | @objc func sendHeartbeat() {
| `- error: Objective-C interoperability is disabled
716 | // Do not send if the connection is closed
717 | guard isConnected else { return }
/host/spi-builder-workspace/Sources/Realtime/Transport.swift:130:14: warning: non-final class 'URLSessionTransport' cannot conform to the 'Sendable' protocol; this is an error in the Swift 6 language mode
128 | /// your own WebSocket library or implementation.
129 | @available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
130 | public class URLSessionTransport: NSObject, Transport, URLSessionWebSocketDelegate {
| `- warning: non-final class 'URLSessionTransport' cannot conform to the 'Sendable' protocol; this is an error in the Swift 6 language mode
131 | /// The URL to connect to
132 | internal let url: URL
/host/spi-builder-workspace/Sources/Realtime/Transport.swift:135:15: warning: stored property 'session' of 'Sendable'-conforming class 'URLSessionTransport' is mutable; this is an error in the Swift 6 language mode
133 |
134 | /// The underling URLsession. Assigned during `connect()`
135 | private var session: URLSession?
| `- warning: stored property 'session' of 'Sendable'-conforming class 'URLSessionTransport' is mutable; this is an error in the Swift 6 language mode
136 |
137 | /// The ongoing task. Assigned during `connect()`
[11/14] Compiling Realtime RealtimeClient.swift
/host/spi-builder-workspace/Sources/Realtime/RealtimeClient.swift:715:4: error: Objective-C interoperability is disabled
713 |
714 | /// Sends a hearbeat payload to the phoenix serverss
715 | @objc func sendHeartbeat() {
| `- error: Objective-C interoperability is disabled
716 | // Do not send if the connection is closed
717 | guard isConnected else { return }
[12/14] Compiling Realtime Channel.swift
[13/14] Compiling Realtime Defaults.swift
[14/14] Compiling Realtime Transport.swift
/host/spi-builder-workspace/Sources/Realtime/Transport.swift:130:14: warning: non-final class 'URLSessionTransport' cannot conform to the 'Sendable' protocol; this is an error in the Swift 6 language mode
128 | /// your own WebSocket library or implementation.
129 | @available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
130 | public class URLSessionTransport: NSObject, Transport, URLSessionWebSocketDelegate {
| `- warning: non-final class 'URLSessionTransport' cannot conform to the 'Sendable' protocol; this is an error in the Swift 6 language mode
131 | /// The URL to connect to
132 | internal let url: URL
/host/spi-builder-workspace/Sources/Realtime/Transport.swift:135:15: warning: stored property 'session' of 'Sendable'-conforming class 'URLSessionTransport' is mutable; this is an error in the Swift 6 language mode
133 |
134 | /// The underling URLsession. Assigned during `connect()`
135 | private var session: URLSession?
| `- warning: stored property 'session' of 'Sendable'-conforming class 'URLSessionTransport' is mutable; this is an error in the Swift 6 language mode
136 |
137 | /// The ongoing task. Assigned during `connect()`
/host/spi-builder-workspace/Sources/Realtime/Transport.swift:253:9: warning: default will never be executed
251 | case let .string(text):
252 | self.delegate?.onMessage(message: text)
253 | default:
| `- warning: default will never be executed
254 | fatalError("Unknown result was received. [\(result)]")
255 | }
BUILD FAILURE 6.3 linux