The Swift Package Index logo.Swift Package Index

Has it really been five years since Swift Package Index launched? Read our anniversary blog post!

Build Information

Failed to build RudderKit, reference master (5ab761), with Swift 6.1 for Linux on 7 Nov 2025 19:24:51 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/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.68.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/rudderlabs/rudder-ios-kit.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/rudderlabs/rudder-ios-kit
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 5ab7613 chore: apply security best practices from step security (#27)
Cloned https://github.com/rudderlabs/rudder-ios-kit.git
Revision (git rev-parse @):
5ab761384718a33c7bbbb93ad00a41df4a60dfab
SUCCESS checkout https://github.com/rudderlabs/rudder-ios-kit.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/rudderlabs/rudder-ios-kit.git
https://github.com/rudderlabs/rudder-ios-kit.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "RudderKit",
  "name" : "RudderKit",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "9.0"
    },
    {
      "name" : "tvos",
      "version" : "10.0"
    },
    {
      "name" : "macos",
      "version" : "10.13"
    },
    {
      "name" : "watchos",
      "version" : "7.0"
    }
  ],
  "products" : [
    {
      "name" : "RudderKit",
      "targets" : [
        "RudderKit"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "RudderKit",
      "module_type" : "SwiftTarget",
      "name" : "RudderKit",
      "path" : "Sources",
      "product_memberships" : [
        "RudderKit"
      ],
      "sources" : [
        "Classes/Data+Ext.swift",
        "Classes/JSON.swift",
        "Classes/Logger.swift",
        "Classes/RepeatingTimer.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/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: sha256:808cb2b2a6cec76654a3acbd283c6c2205bc60d2b29562c95b9f5147612f6d32
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
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/7] Emitting module RudderKit
/host/spi-builder-workspace/Sources/Classes/Data+Ext.swift:32:8: error: no such module 'zlibLinux'
 30 |
 31 | #if os(Linux)
 32 | import zlibLinux
    |        `- error: no such module 'zlibLinux'
 33 | #else
 34 | import zlib
[4/7] Compiling RudderKit Data+Ext.swift
/host/spi-builder-workspace/Sources/Classes/Data+Ext.swift:32:8: error: no such module 'zlibLinux'
 30 |
 31 | #if os(Linux)
 32 | import zlibLinux
    |        `- error: no such module 'zlibLinux'
 33 | #else
 34 | import zlib
[5/7] Compiling RudderKit JSON.swift
/host/spi-builder-workspace/Sources/Classes/Data+Ext.swift:32:8: error: no such module 'zlibLinux'
 30 |
 31 | #if os(Linux)
 32 | import zlibLinux
    |        `- error: no such module 'zlibLinux'
 33 | #else
 34 | import zlib
[6/7] Compiling RudderKit Logger.swift
/host/spi-builder-workspace/Sources/Classes/Data+Ext.swift:32:8: error: no such module 'zlibLinux'
 30 |
 31 | #if os(Linux)
 32 | import zlibLinux
    |        `- error: no such module 'zlibLinux'
 33 | #else
 34 | import zlib
[7/7] Compiling RudderKit RepeatingTimer.swift
/host/spi-builder-workspace/Sources/Classes/Data+Ext.swift:32:8: error: no such module 'zlibLinux'
 30 |
 31 | #if os(Linux)
 32 | import zlibLinux
    |        `- error: no such module 'zlibLinux'
 33 | #else
 34 | import zlib
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/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:808cb2b2a6cec76654a3acbd283c6c2205bc60d2b29562c95b9f5147612f6d32
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
[2/6] Compiling RudderKit RepeatingTimer.swift
/host/spi-builder-workspace/Sources/Classes/Data+Ext.swift:32:8: error: no such module 'zlibLinux'
 30 |
 31 | #if os(Linux)
 32 | import zlibLinux
    |        `- error: no such module 'zlibLinux'
 33 | #else
 34 | import zlib
[3/6] Compiling RudderKit Logger.swift
/host/spi-builder-workspace/Sources/Classes/Data+Ext.swift:32:8: error: no such module 'zlibLinux'
 30 |
 31 | #if os(Linux)
 32 | import zlibLinux
    |        `- error: no such module 'zlibLinux'
 33 | #else
 34 | import zlib
error: emit-module command failed with exit code 1 (use -v to see invocation)
[4/6] Emitting module RudderKit
/host/spi-builder-workspace/Sources/Classes/Data+Ext.swift:32:8: error: no such module 'zlibLinux'
 30 |
 31 | #if os(Linux)
 32 | import zlibLinux
    |        `- error: no such module 'zlibLinux'
 33 | #else
 34 | import zlib
[5/6] Compiling RudderKit Data+Ext.swift
/host/spi-builder-workspace/Sources/Classes/Data+Ext.swift:32:8: error: no such module 'zlibLinux'
 30 |
 31 | #if os(Linux)
 32 | import zlibLinux
    |        `- error: no such module 'zlibLinux'
 33 | #else
 34 | import zlib
[6/6] Compiling RudderKit JSON.swift
/host/spi-builder-workspace/Sources/Classes/Data+Ext.swift:32:8: error: no such module 'zlibLinux'
 30 |
 31 | #if os(Linux)
 32 | import zlibLinux
    |        `- error: no such module 'zlibLinux'
 33 | #else
 34 | import zlib
BUILD FAILURE 6.1 linux