HorizonCalendar – Build Information

Build Information

Failed to build HorizonCalendar, reference master (6f8494), with Swift 6.3 for macOS (SPM) on 20 Oct 2026 04:16:49 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-26.5.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 5.1.3
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/airbnb/HorizonCalendar.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/airbnb/HorizonCalendar
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 6f8494b Isolate calendar item view operations to the main actor (#350)
Cloned https://github.com/airbnb/HorizonCalendar.git
Revision (git rev-parse @):
6f8494b88c49cf82055a1d072a76a7f5e6fd5206
SUCCESS checkout https://github.com/airbnb/HorizonCalendar.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.3
Building package at path:  $PWD
https://github.com/airbnb/HorizonCalendar.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.5.0.app xcrun swift build --arch arm64
[1/1] Compiling plugin FormatSwift
[2/2] Compiling plugin GenerateManual
[3/3] Compiling plugin GenerateDoccReference
Building for debugging...
[3/5] Write sources
[4/5] Write swift-version-69A768CDF2A0BEE1.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[6/48] Emitting module HorizonCalendar
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[7/52] Compiling HorizonCalendar ScrollToItemContext.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[8/52] Compiling HorizonCalendar SubviewInsertionIndexTracker.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[9/52] Compiling HorizonCalendar UIView+NoAnimation.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[10/52] Compiling HorizonCalendar VisibleItem.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[11/52] Compiling HorizonCalendar VisibleItemsProvider.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[12/52] Compiling HorizonCalendar MonthRange.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[13/52] Compiling HorizonCalendar MonthsLayout.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[14/52] Compiling HorizonCalendar OverlaidItemLocation.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[15/52] Compiling HorizonCalendar OverlayLayoutContext.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[16/52] Compiling HorizonCalendar DayRange.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[17/52] Compiling HorizonCalendar DayRangeLayoutContext.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[18/52] Compiling HorizonCalendar DaysOfTheWeekRowSeparatorOptions.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[19/52] Compiling HorizonCalendar DayOfWeekView.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[20/52] Compiling HorizonCalendar CalendarViewProxy.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[21/52] Compiling HorizonCalendar CalendarViewRepresentable.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[22/52] Compiling HorizonCalendar CalendarViewScrollPosition.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[23/52] Compiling HorizonCalendar Day.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[24/52] Compiling HorizonCalendar DayOfWeekPosition.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[25/52] Compiling HorizonCalendar Shape.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[26/52] Compiling HorizonCalendar SwiftUIWrapperView.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[27/52] Compiling HorizonCalendar Month.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[28/52] Compiling HorizonCalendar MonthLayoutContext.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[29/52] Compiling HorizonCalendar AnyCalendarItemModel.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[30/52] Compiling HorizonCalendar CalendarItemModel.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[31/52] Compiling HorizonCalendar CalendarItemViewRepresentable.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[32/52] Compiling HorizonCalendar CalendarView.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[33/52] Compiling HorizonCalendar CalendarViewContent.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[34/52] Compiling HorizonCalendar DayView.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[35/52] Compiling HorizonCalendar DrawingConfig.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[36/52] Compiling HorizonCalendar MonthGridBackgroundView.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[37/52] Compiling HorizonCalendar MonthHeaderView.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[38/52] Compiling HorizonCalendar LayoutItem.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[39/52] Compiling HorizonCalendar LayoutItemTypeEnumerator.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[40/52] Compiling HorizonCalendar PaginationHelpers.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[41/52] Compiling HorizonCalendar ScreenPixelAlignment.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[42/52] Compiling HorizonCalendar ScrollMetricsMutator.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[43/52] Compiling HorizonCalendar CGFloat+MaxLayoutValue.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[44/52] Compiling HorizonCalendar Calendar+Helpers.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[45/52] Compiling HorizonCalendar CalendarScrollView.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[46/52] Compiling HorizonCalendar ColorViewRepresentable.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[47/52] Compiling HorizonCalendar Dictionary+MutatingValueForKey.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[48/52] Compiling HorizonCalendar DoubleLayoutPassHelpers.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[49/52] Compiling HorizonCalendar FrameProvider.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[50/52] Compiling HorizonCalendar Hasher+CGRect.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[51/52] Compiling HorizonCalendar ItemView.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
[52/52] Compiling HorizonCalendar ItemViewReuseManager.swift
/Users/admin/builder/spi-builder-workspace/Sources/Internal/CalendarScrollView.swift:16:8: error: no such module 'UIKit'
14 | // limitations under the License.
15 |
16 | import UIKit
   |        `- error: no such module 'UIKit'
17 |
18 | /// A scroll view with altered behavior to better fit the needs of `CalendarView`.
Fetching https://github.com/airbnb/swift
[1/5579] Fetching swift
Fetched https://github.com/airbnb/swift from cache (11.35s)
Computing version for https://github.com/airbnb/swift
Computed https://github.com/airbnb/swift at 1.2.0 (14.25s)
Fetching https://github.com/apple/swift-argument-parser
[1/19137] Fetching swift-argument-parser
Fetched https://github.com/apple/swift-argument-parser from cache (1.95s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 1.8.2 (2.55s)
Creating working copy for https://github.com/airbnb/swift
Working copy of https://github.com/airbnb/swift resolved at 1.2.0
Creating working copy for https://github.com/apple/swift-argument-parser
Working copy of https://github.com/apple/swift-argument-parser resolved at 1.8.2
Downloading binary artifact https://github.com/realm/SwiftLint/releases/download/0.55.1/SwiftLintBinary-macos.artifactbundle.zip
Downloading binary artifact https://github.com/calda/SwiftFormat-nightly/releases/download/2025-12-20/SwiftFormat.artifactbundle.zip
[8948/11034045] Downloading https://github.com/realm/SwiftLint/releases/download/0.55.1/SwiftLintBinary-macos.artifactbundle.zip
[10274262/57305396] Downloading https://github.com/realm/SwiftLint/releases/download/0.55.1/SwiftLintBinary-macos.artifactbundle.zip, https://github.com/calda/SwiftFormat-nightly/releases/download/2025-12-20/SwiftFormat.artifactbundle.zip
Downloaded https://github.com/realm/SwiftLint/releases/download/0.55.1/SwiftLintBinary-macos.artifactbundle.zip (1.13s)
[42104418/46271351] Downloading https://github.com/calda/SwiftFormat-nightly/releases/download/2025-12-20/SwiftFormat.artifactbundle.zip
Downloaded https://github.com/calda/SwiftFormat-nightly/releases/download/2025-12-20/SwiftFormat.artifactbundle.zip (3.39s)
BUILD FAILURE 6.3 macosSpm