SwiftyModbus – Build Information

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

Build Information

Failed to build SwiftyModbus, reference master (444406), with Swift 6.1 for Linux on 27 Apr 2025 16:12:54 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$PWD" 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: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/DimaRU/SwiftyModbus.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/DimaRU/SwiftyModbus
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 444406b Fix Package definition file errors for Xcode 15/Swift 5.9
Cloned https://github.com/DimaRU/SwiftyModbus.git
Revision (git rev-parse @):
444406bf0d43bf325073e892256c963e5bf77441
SUCCESS checkout https://github.com/DimaRU/SwiftyModbus.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/DimaRU/SwiftyModbus.git
https://github.com/DimaRU/SwiftyModbus.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "promisekit",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "6.15.2",
            "upper_bound" : "7.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/mxcl/PromiseKit.git"
    }
  ],
  "manifest_display_name" : "SwiftyModbus",
  "name" : "SwiftyModbus",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SwiftyModbusPromise",
      "targets" : [
        "SwiftyModbusPromise"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "SwiftyModbus",
      "targets" : [
        "SwiftyModbus"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SwiftyModbusTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftyModbusTests",
      "path" : "Tests/SwiftyModbusTests",
      "sources" : [
        "SwiftModbusTests.swift"
      ],
      "target_dependencies" : [
        "SwiftyModbus"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SwiftyModbusPromise",
      "module_type" : "SwiftTarget",
      "name" : "SwiftyModbusPromise",
      "path" : "Sources/SwiftyModbusPromise",
      "product_dependencies" : [
        "PromiseKit"
      ],
      "product_memberships" : [
        "SwiftyModbusPromise"
      ],
      "sources" : [
        "SwiftyModbusPromise.swift"
      ],
      "target_dependencies" : [
        "CModbus"
      ],
      "type" : "library"
    },
    {
      "c99name" : "SwiftyModbus",
      "module_type" : "SwiftTarget",
      "name" : "SwiftyModbus",
      "path" : "Sources/SwiftyModbus",
      "product_memberships" : [
        "SwiftyModbus"
      ],
      "sources" : [
        "SwiftyModbus.swift",
        "SwiftyModbusResult.swift"
      ],
      "target_dependencies" : [
        "CModbus"
      ],
      "type" : "library"
    },
    {
      "c99name" : "CModbus",
      "module_type" : "SystemLibraryTarget",
      "name" : "CModbus",
      "path" : "Sources/Libmodbus",
      "product_memberships" : [
        "SwiftyModbusPromise",
        "SwiftyModbus"
      ],
      "sources" : [
      ],
      "type" : "system-target"
    }
  ],
  "tools_version" : "5.3"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/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
Fetching https://github.com/mxcl/PromiseKit.git
[1/17186] Fetching promisekit
Fetched https://github.com/mxcl/PromiseKit.git from cache (1.70s)
Computing version for https://github.com/mxcl/PromiseKit.git
Computed https://github.com/mxcl/PromiseKit.git at 6.22.1 (2.56s)
Creating working copy for https://github.com/mxcl/PromiseKit.git
Working copy of https://github.com/mxcl/PromiseKit.git resolved at 6.22.1
warning: you may be able to install libmodbus using your system-packager:
    apt-get install libmodbus-dev
warning: you may be able to install libmodbus using your system-packager:
    apt-get install libmodbus-dev
Building for debugging...
[0/4] Write sources
[3/4] Write swift-version-24593BA9C3E375BF.txt
[5/23] Emitting module PromiseKit
[6/25] Compiling PromiseKit race.swift
[7/25] Compiling PromiseKit when.swift
[8/25] Compiling PromiseKit Combine.swift
[9/25] Compiling PromiseKit Configuration.swift
[10/25] Compiling PromiseKit CustomStringConvertible.swift
[11/25] Compiling PromiseKit Error.swift
[12/25] Compiling PromiseKit Async.swift
[13/25] Compiling PromiseKit Box.swift
[14/25] Compiling PromiseKit Catchable.swift
[15/25] Compiling PromiseKit Guarantee.swift
[16/25] Compiling PromiseKit LogEvent.swift
[17/25] Compiling SwiftyModbus SwiftyModbus.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "libmodbus.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/Sources/Libmodbus/libmodbus.h:1:9: error: 'modbus.h' file not found
1 | #import <modbus.h>
  |         `- error: 'modbus.h' file not found
2 |
/host/spi-builder-workspace/Sources/SwiftyModbus/SwiftyModbus.swift:9:8: error: could not build C module 'CModbus'
  7 |
  8 | import Foundation
  9 | import CModbus
    |        `- error: could not build C module 'CModbus'
 10 |
 11 | fileprivate let errorValue: Int32 = -1
error: emit-module command failed with exit code 1 (use -v to see invocation)
[18/25] Compiling SwiftyModbus SwiftyModbusResult.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "libmodbus.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/Sources/Libmodbus/libmodbus.h:1:9: error: 'modbus.h' file not found
1 | #import <modbus.h>
  |         `- error: 'modbus.h' file not found
2 |
/host/spi-builder-workspace/Sources/SwiftyModbus/SwiftyModbus.swift:9:8: error: could not build C module 'CModbus'
  7 |
  8 | import Foundation
  9 | import CModbus
    |        `- error: could not build C module 'CModbus'
 10 |
 11 | fileprivate let errorValue: Int32 = -1
[19/25] Emitting module SwiftyModbus
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "libmodbus.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/Sources/Libmodbus/libmodbus.h:1:9: error: 'modbus.h' file not found
1 | #import <modbus.h>
  |         `- error: 'modbus.h' file not found
2 |
/host/spi-builder-workspace/Sources/SwiftyModbus/SwiftyModbus.swift:9:8: error: could not build C module 'CModbus'
  7 |
  8 | import Foundation
  9 | import CModbus
    |        `- error: could not build C module 'CModbus'
 10 |
 11 | fileprivate let errorValue: Int32 = -1
[20/25] Compiling PromiseKit firstly.swift
[21/25] Compiling PromiseKit hang.swift
[22/25] Compiling PromiseKit Thenable.swift
[23/25] Compiling PromiseKit after.swift
[24/25] Compiling PromiseKit Promise.swift
[25/25] Compiling PromiseKit Resolver.swift
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$PWD" 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: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
warning: you may be able to install libmodbus using your system-packager:
    apt-get install libmodbus-dev
warning: you may be able to install libmodbus using your system-packager:
    apt-get install libmodbus-dev
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
[2/20] Compiling PromiseKit firstly.swift
[3/20] Compiling PromiseKit hang.swift
error: emit-module command failed with exit code 1 (use -v to see invocation)
[4/22] Emitting module SwiftyModbus
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "libmodbus.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/Sources/Libmodbus/libmodbus.h:1:9: error: 'modbus.h' file not found
1 | #import <modbus.h>
  |         `- error: 'modbus.h' file not found
2 |
/host/spi-builder-workspace/Sources/SwiftyModbus/SwiftyModbus.swift:9:8: error: could not build C module 'CModbus'
  7 |
  8 | import Foundation
  9 | import CModbus
    |        `- error: could not build C module 'CModbus'
 10 |
 11 | fileprivate let errorValue: Int32 = -1
[5/22] Compiling SwiftyModbus SwiftyModbusResult.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "libmodbus.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/Sources/Libmodbus/libmodbus.h:1:9: error: 'modbus.h' file not found
1 | #import <modbus.h>
  |         `- error: 'modbus.h' file not found
2 |
/host/spi-builder-workspace/Sources/SwiftyModbus/SwiftyModbus.swift:9:8: error: could not build C module 'CModbus'
  7 |
  8 | import Foundation
  9 | import CModbus
    |        `- error: could not build C module 'CModbus'
 10 |
 11 | fileprivate let errorValue: Int32 = -1
[6/22] Compiling SwiftyModbus SwiftyModbus.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "libmodbus.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/Sources/Libmodbus/libmodbus.h:1:9: error: 'modbus.h' file not found
1 | #import <modbus.h>
  |         `- error: 'modbus.h' file not found
2 |
/host/spi-builder-workspace/Sources/SwiftyModbus/SwiftyModbus.swift:9:8: error: could not build C module 'CModbus'
  7 |
  8 | import Foundation
  9 | import CModbus
    |        `- error: could not build C module 'CModbus'
 10 |
 11 | fileprivate let errorValue: Int32 = -1
[7/22] Emitting module PromiseKit
[8/22] Compiling PromiseKit Promise.swift
[9/22] Compiling PromiseKit Resolver.swift
[10/22] Compiling PromiseKit Combine.swift
[11/22] Compiling PromiseKit Configuration.swift
[12/22] Compiling PromiseKit CustomStringConvertible.swift
[13/22] Compiling PromiseKit Error.swift
[14/22] Compiling PromiseKit Guarantee.swift
[15/22] Compiling PromiseKit LogEvent.swift
[16/22] Compiling PromiseKit Thenable.swift
[17/22] Compiling PromiseKit after.swift
[18/22] Compiling PromiseKit Async.swift
[19/22] Compiling PromiseKit Box.swift
[20/22] Compiling PromiseKit Catchable.swift
[21/22] Compiling PromiseKit race.swift
[22/22] Compiling PromiseKit when.swift
BUILD FAILURE 6.1 linux