Swift Package Index

Build Information

Failed to build Customer.io, reference 4.4.1 (2ff693), with Swift 6.3 for macOS (SPM) on 19 Apr 2026 10:25:42 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/customerio/customerio-ios.git
Reference: 4.4.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/customerio/customerio-ios
 * tag               4.4.1      -> FETCH_HEAD
HEAD is now at 2ff693b chore: prepare for 4.4.1
Cloned https://github.com/customerio/customerio-ios.git
Revision (git rev-parse @):
2ff693b91009453dcc6d2cea6c22296607cfd71b
SUCCESS checkout https://github.com/customerio/customerio-ios.git at 4.4.1
Fetching https://github.com/customerio/cdp-analytics-swift.git
Fetching https://github.com/LaunchDarkly/swift-eventsource.git
[1/1795] Fetching swift-eventsource
[307/5264] Fetching swift-eventsource, cdp-analytics-swift
Fetched https://github.com/LaunchDarkly/swift-eventsource.git from cache (1.00s)
[278/3469] Fetching cdp-analytics-swift
Fetched https://github.com/customerio/cdp-analytics-swift.git from cache (1.27s)
Computing version for https://github.com/LaunchDarkly/swift-eventsource.git
Computed https://github.com/LaunchDarkly/swift-eventsource.git at 3.3.0 (1.97s)
Computing version for https://github.com/customerio/cdp-analytics-swift.git
Computed https://github.com/customerio/cdp-analytics-swift.git at 1.7.3+cio.1 (0.56s)
Fetching https://github.com/segmentio/sovran-swift.git
Fetching https://github.com/segmentio/jsonsafeencoding-swift.git
[1/77] Fetching jsonsafeencoding-swift
[36/448] Fetching jsonsafeencoding-swift, sovran-swift
Fetched https://github.com/segmentio/jsonsafeencoding-swift.git from cache (0.75s)
Fetched https://github.com/segmentio/sovran-swift.git from cache (0.75s)
Computing version for https://github.com/segmentio/jsonsafeencoding-swift.git
Computed https://github.com/segmentio/jsonsafeencoding-swift.git at 2.0.0 (1.45s)
Computing version for https://github.com/segmentio/sovran-swift.git
Computed https://github.com/segmentio/sovran-swift.git at 1.1.2 (0.67s)
Creating working copy for https://github.com/LaunchDarkly/swift-eventsource.git
Working copy of https://github.com/LaunchDarkly/swift-eventsource.git resolved at 3.3.0
Creating working copy for https://github.com/segmentio/jsonsafeencoding-swift.git
Working copy of https://github.com/segmentio/jsonsafeencoding-swift.git resolved at 2.0.0
Creating working copy for https://github.com/customerio/cdp-analytics-swift.git
Working copy of https://github.com/customerio/cdp-analytics-swift.git resolved at 1.7.3+cio.1
Creating working copy for https://github.com/segmentio/sovran-swift.git
Working copy of https://github.com/segmentio/sovran-swift.git resolved at 1.1.2
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "traits": [
    "default"
  ],
  "dependencies": [
    {
      "identity": "customerio-ios",
      "name": "Customer.io",
      "url": "https://github.com/customerio/customerio-ios.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/customerio-ios",
      "traits": [
        "default"
      ],
      "dependencies": [
        {
          "identity": "cdp-analytics-swift",
          "name": "CioAnalytics",
          "url": "https://github.com/customerio/cdp-analytics-swift.git",
          "version": "1.7.3+cio.1",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/cdp-analytics-swift",
          "traits": [
            "default"
          ],
          "dependencies": [
            {
              "identity": "sovran-swift",
              "name": "Sovran",
              "url": "https://github.com/segmentio/sovran-swift.git",
              "version": "1.1.2",
              "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/sovran-swift",
              "traits": [
                "default"
              ],
              "dependencies": [
              ]
            },
            {
              "identity": "jsonsafeencoding-swift",
              "name": "JSONSafeEncoding",
              "url": "https://github.com/segmentio/jsonsafeencoding-swift.git",
              "version": "2.0.0",
              "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/jsonsafeencoding-swift",
              "traits": [
                "default"
              ],
              "dependencies": [
              ]
            }
          ]
        },
        {
          "identity": "swift-eventsource",
          "name": "LDSwiftEventSource",
          "url": "https://github.com/LaunchDarkly/swift-eventsource.git",
          "version": "3.3.0",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-eventsource",
          "traits": [
            "default"
          ],
          "dependencies": [
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/customerio/customerio-ios.git
[1/41033] Fetching customerio-ios
Fetched https://github.com/customerio/customerio-ios.git from cache (1.99s)
Fetching https://github.com/customerio/cdp-analytics-swift.git from cache
Fetching https://github.com/LaunchDarkly/swift-eventsource.git from cache
Fetched https://github.com/customerio/cdp-analytics-swift.git from cache (0.51s)
Fetched https://github.com/LaunchDarkly/swift-eventsource.git from cache (0.51s)
Computing version for https://github.com/LaunchDarkly/swift-eventsource.git
Computed https://github.com/LaunchDarkly/swift-eventsource.git at 3.3.0 (0.57s)
Computing version for https://github.com/customerio/cdp-analytics-swift.git
Computed https://github.com/customerio/cdp-analytics-swift.git at 1.7.3+cio.1 (0.03s)
Fetching https://github.com/segmentio/sovran-swift.git from cache
Fetching https://github.com/segmentio/jsonsafeencoding-swift.git from cache
Fetched https://github.com/segmentio/jsonsafeencoding-swift.git from cache (0.45s)
Fetched https://github.com/segmentio/sovran-swift.git from cache (0.45s)
Computing version for https://github.com/segmentio/jsonsafeencoding-swift.git
Computed https://github.com/segmentio/jsonsafeencoding-swift.git at 2.0.0 (0.51s)
Computing version for https://github.com/segmentio/sovran-swift.git
Computed https://github.com/segmentio/sovran-swift.git at 1.1.2 (0.03s)
Creating working copy for https://github.com/segmentio/sovran-swift.git
Working copy of https://github.com/segmentio/sovran-swift.git resolved at 1.1.2
Creating working copy for https://github.com/segmentio/jsonsafeencoding-swift.git
Working copy of https://github.com/segmentio/jsonsafeencoding-swift.git resolved at 2.0.0
Creating working copy for https://github.com/customerio/customerio-ios.git
Working copy of https://github.com/customerio/customerio-ios.git resolved at 4.4.1 (2ff693b)
Creating working copy for https://github.com/LaunchDarkly/swift-eventsource.git
Working copy of https://github.com/LaunchDarkly/swift-eventsource.git resolved at 3.3.0
Creating working copy for https://github.com/customerio/cdp-analytics-swift.git
Working copy of https://github.com/customerio/cdp-analytics-swift.git resolved at 1.7.3+cio.1
warning: '.resolve-product-dependencies': dependency 'customerio-ios' is not used by any target
Found 2 product dependencies
  - CioAnalytics
  - LDSwiftEventSource
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.3
Building package at path:  $PWD
https://github.com/customerio/customerio-ios.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64
error: the library 'CioDataPipelines' requires macos 10.13, but depends on the product 'CioAnalytics' which requires macos 10.15; consider changing the library 'CioDataPipelines' to require macos 10.15 or later, or the product 'CioAnalytics' to require macos 10.13 or earlier.
BUILD FAILURE 6.3 macosSpm