failed AI.Infrastructure.Tests.Storage.ChatExecutionTests.HostShutdownShouldInterruptTheRunAndUserStopShouldStayPaused (130ms) from /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/bin/Debug/net10.0/AI.Server.Tests.dll (net10.0|x64) Xunit.MicrosoftTestingPlatform.XunitException: System.InvalidOperationException : Sequence contains no matching element at System.Linq.ThrowHelper.ThrowNoMatchException() at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source, Func`2 predicate) at AI.Infrastructure.Tests.Storage.ChatExecutionTests.HostShutdownShouldInterruptTheRunAndUserStopShouldStayPaused() in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Storage/ChatExecutionTests.cs:2695 at AI.Infrastructure.Tests.Storage.ChatExecutionTests.HostShutdownShouldInterruptTheRunAndUserStopShouldStayPaused() in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Storage/ChatExecutionTests.cs:2713 --- End of stack trace from previous location ---

failed AI.Infrastructure.Tests.Storage.ChatExecutionTests.ScheduledRunForksFromTheEndReportsSuccessAndDeletesItsBranch (201ms) from /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/bin/Debug/net10.0/AI.Server.Tests.dll (net10.0|x64) Xunit.MicrosoftTestingPlatform.XunitException: System.InvalidOperationException : Sequence contains no elements at System.Linq.ThrowHelper.ThrowNoElementsException() at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source) at AI.Infrastructure.Tests.Storage.ChatExecutionTests.ScheduledRunForksFromTheEndReportsSuccessAndDeletesItsBranch() in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Storage/ChatExecutionTests.Schedules.cs:77 at AI.Infrastructure.Tests.Storage.ChatExecutionTests.ScheduledRunForksFromTheEndReportsSuccessAndDeletesItsBranch() in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Storage/ChatExecutionTests.Schedules.cs:106 --- End of stack trace from previous location ---

failed AI.Infrastructure.Tests.Storage.ChatExecutionTests.WarmUpShouldRemoveReplacementTailsLeftByOlderBuilds (354ms) from /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/bin/Debug/net10.0/AI.Server.Tests.dll (net10.0|x64) Shouldly.ShouldAssertException : cleanedChat!.Messages.Select(message => message.Content) should be ["Replacement"] but was (case sensitive comparison) ["Original", "Original reply", "Replacement"] difference [*"Original"*, *"Original reply"*, *"Replacement"*] at AI.Infrastructure.Tests.Storage.ChatExecutionTests.WarmUpShouldRemoveReplacementTailsLeftByOlderBuilds() in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Storage/ChatExecutionTests.cs:2229 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at AI.Infrastructure.Tests.Storage.ChatExecutionTests.WarmUpShouldRemoveReplacementTailsLeftByOlderBuilds() in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Storage/ChatExecutionTests.cs:2229 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task, ConfigureAwaitOptions options)

failed AI.Infrastructure.Tests.Tools.AppSkillsToolTests.ShouldRejectInvalidSchemaAndAllowCorrectedSave(field: "parameters", schema: "{\"path\":{\"type\":\"string\"}}") (507ms) from /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/bin/Debug/net10.0/AI.Server.Tests.dll (net10.0|x64) Xunit.MicrosoftTestingPlatform.XunitException: System.NullReferenceException : Object reference not set to an instance of an object. at AI.Infrastructure.Tests.Tools.AppSkillsToolTests.ShouldRejectInvalidSchemaAndAllowCorrectedSave(String field, String schema) in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Tools/AppSkillsToolTests.cs:198 at AI.Infrastructure.Tests.Tools.AppSkillsToolTests.ShouldRejectInvalidSchemaAndAllowCorrectedSave(String field, String schema) in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Tools/AppSkillsToolTests.cs:198 at AI.Infrastructure.Tests.Tools.AppSkillsToolTests.ShouldRejectInvalidSchemaAndAllowCorrectedSave(String field, String schema) in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Tools/AppSkillsToolTests.cs:198 --- End of stack trace from previous location --- /home/runner/work/AI.Client/AI.Client/tests/AI.Web.Tests/bin/Debug/net10.0/AI.Web.Tests.dll (net10.0|x64) passed (7s 295ms) /home/runner/work/AI.Client/AI.Client/tests/AI.TextCorrection.Tests/bin/Debug/net10.0/AI.TextCorrection.Tests.dll (net10.0|x64) passed (21s 657ms)

failed AI.Infrastructure.Tests.Tools.AppSkillsToolTests.ShouldRejectInvalidSchemaAndAllowCorrectedSave(field: "result", schema: "{\"type\":\"unknown-type\"}") (414ms) from /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/bin/Debug/net10.0/AI.Server.Tests.dll (net10.0|x64) Xunit.MicrosoftTestingPlatform.XunitException: System.NullReferenceException : Object reference not set to an instance of an object. at AI.Infrastructure.Tests.Tools.AppSkillsToolTests.ShouldRejectInvalidSchemaAndAllowCorrectedSave(String field, String schema) in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Tools/AppSkillsToolTests.cs:198 at AI.Infrastructure.Tests.Tools.AppSkillsToolTests.ShouldRejectInvalidSchemaAndAllowCorrectedSave(String field, String schema) in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Tools/AppSkillsToolTests.cs:198 at AI.Infrastructure.Tests.Tools.AppSkillsToolTests.ShouldRejectInvalidSchemaAndAllowCorrectedSave(String field, String schema) in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Tools/AppSkillsToolTests.cs:198 --- End of stack trace from previous location ---

failed AI.Infrastructure.Tests.Tools.AppSkillsToolTests.ShouldSaveFindAndRunProjectSkillThroughAppMcpSession (637ms) from /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/bin/Debug/net10.0/AI.Server.Tests.dll (net10.0|x64) Shouldly.ShouldAssertException : found.StructuredContent!.Value.GetProperty("skills").EnumerateArray() should contain an element satisfying the condition (item.GetProperty("id").GetString() == "short-summary") but does not at AI.Infrastructure.Tests.Tools.AppSkillsToolTests.ShouldSaveFindAndRunProjectSkillThroughAppMcpSession() in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Tools/AppSkillsToolTests.cs:153 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at AI.Infrastructure.Tests.Tools.AppSkillsToolTests.ShouldSaveFindAndRunProjectSkillThroughAppMcpSession() in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Tools/AppSkillsToolTests.cs:160 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at AI.Infrastructure.Tests.Tools.AppSkillsToolTests.ShouldSaveFindAndRunProjectSkillThroughAppMcpSession() in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Tools/AppSkillsToolTests.cs:160 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task, ConfigureAwaitOptions options) --- End of stack trace from previous location ---

failed AI.Infrastructure.Tests.Storage.JsonChatRepositoryTests.ShouldListChatSummaryWithoutReadingMessageNodes (14ms) from /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/bin/Debug/net10.0/AI.Server.Tests.dll (net10.0|x64) Shouldly.ShouldAssertException : await repository.ListSummariesAsync(projectId, CancellationToken.None) should have single item but had 0 items and was [] (System.Collections.Generic.List`1[AI.Application.Chats.StoredChatSummary]) at AI.Infrastructure.Tests.Storage.JsonChatRepositoryTests.ShouldListChatSummaryWithoutReadingMessageNodes() in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Storage/JsonChatRepositoryTests.cs:43 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task, ConfigureAwaitOptions options) --- End of stack trace from previous location --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task, ConfigureAwaitOptions options)

failed AI.Infrastructure.Tests.Storage.JsonChatRepositoryTests.ShouldUpgradeLegacyDemoSummaryFromItsFullDocument (9ms) from /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/bin/Debug/net10.0/AI.Server.Tests.dll (net10.0|x64) Shouldly.ShouldAssertException : await repository.ListSummariesAsync(projectId, CancellationToken.None) should have single item but had 0 items and was [] (System.Collections.Generic.List`1[AI.Application.Chats.StoredChatSummary]) at AI.Infrastructure.Tests.Storage.JsonChatRepositoryTests.ShouldUpgradeLegacyDemoSummaryFromItsFullDocument() in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Storage/JsonChatRepositoryTests.cs:199 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task, ConfigureAwaitOptions options) --- End of stack trace from previous location --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task, ConfigureAwaitOptions options)

failed AI.Infrastructure.Tests.Storage.JsonChatRepositoryTests.ShouldMigrateBranchCountForAnOlderSummary (61ms) from /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/bin/Debug/net10.0/AI.Server.Tests.dll (net10.0|x64) Shouldly.ShouldAssertException : await repository.ListSummariesAsync(projectId, CancellationToken.None) should have single item but had 0 items and was [] (System.Collections.Generic.List`1[AI.Application.Chats.StoredChatSummary]) at AI.Infrastructure.Tests.Storage.JsonChatRepositoryTests.ShouldMigrateBranchCountForAnOlderSummary() in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Storage/JsonChatRepositoryTests.cs:162 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task, ConfigureAwaitOptions options) --- End of stack trace from previous location --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task, ConfigureAwaitOptions options)

failed AI.Infrastructure.Tests.Usage.TokenUsageTests.ShouldReadRecordsBackByMonthAndSkipALineCutShort (128ms) from /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/bin/Debug/net10.0/AI.Server.Tests.dll (net10.0|x64) Shouldly.ShouldAssertException : _files.Files.Keys should satisfy the condition path.Contains(Combine("root", "usage"), Ordinal) but ["root\usage\2026-08.jsonl", "root\usage\2026-09.jsonl"] do not at AI.Infrastructure.Tests.Usage.TokenUsageTests.ShouldReadRecordsBackByMonthAndSkipALineCutShort() in /home/runner/work/AI.Client/AI.Client/tests/AI.Server.Tests/Infrastructure/Usage/TokenUsageTests.cs:165 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task, ConfigureAwaitOptions options) --- End of stack trace from previous location --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

Process completed with exit code 2.

Process completed with exit code 2.

Process completed with exit code 2.

failed AI.Infrastructure.Tests.Tools.AppSubtaskToolTests.ShouldReportWhatEachSubtaskIsDoingWhileItRuns (1s 000ms) from D:\a\AI.Client\AI.Client\tests\AI.Server.Tests\bin\Debug\net10.0\AI.Server.Tests.dll (net10.0|x64) Shouldly.ShouldAssertException : reports should contain an element satisfying the condition (value.Progress == 2) but does not at AI.Infrastructure.Tests.Tools.AppSubtaskToolTests.ShouldReportWhatEachSubtaskIsDoingWhileItRuns() in D:\a\AI.Client\AI.Client\tests\AI.Server.Tests\Infrastructure\Tools\AppSubtaskToolTests.cs:242 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at AI.Infrastructure.Tests.Tools.AppSubtaskToolTests.ShouldReportWhatEachSubtaskIsDoingWhileItRuns() in D:\a\AI.Client\AI.Client\tests\AI.Server.Tests\Infrastructure\Tools\AppSubtaskToolTests.cs:243 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at AI.Infrastructure.Tests.Tools.AppSubtaskToolTests.ShouldReportWhatEachSubtaskIsDoingWhileItRuns() in D:\a\AI.Client\AI.Client\tests\AI.Server.Tests\Infrastructure\Tools\AppSubtaskToolTests.cs:243 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task, ConfigureAwaitOptions options) --- End of stack trace from previous location ---

Process completed with exit code 2.

"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"