iOS tests failed with The "AppleAppBuilderTask" task failed unexpectedly. System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. (Parameter 'chunkLength') #46022
Description
Got this error in CI
Check failure on line 117 in eng/testing/tests.mobile.targets
@azure-pipelinesazure-pipelines
/ runtime-staging (Build iOS x64 Release AllSubsets_Mono)
eng/testing/tests.mobile.targets#L117
eng/testing/tests.mobile.targets(117,5): error MSB4018: (NETCORE_ENGINEERING_TELEMETRY=Build) The "AppleAppBuilderTask" task failed unexpectedly.
System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. (Parameter 'chunkLength')
at System.Text.StringBuilder.ToString()
at Utils.RunProcess(String path, String args, IDictionary`2 envVars, String workingDir, Boolean ignoreErrors) in /_/src/tasks/AppleAppBuilder/Utils.cs:line 75
at Xcode..ctor(String target) in /_/src/tasks/AppleAppBuilder/Xcode.cs:line 18
at AppleAppBuilderTask.Execute() in /_/src/tasks/AppleAppBuilder/AppleAppBuilder.cs:line 175
at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(ITaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask)
Exception is from here
https://github.com/dotnet/runtime/blob/master/src/libraries/System.Private.CoreLib/src/System/Text/StringBuilder.cs#L367
The string builder here is apparently corrupted - eg ToString() on an empty StringBuilder does not throw - suggesting that writing to it happened after WaitForExit() returned
https://github.com/dotnet/runtime/blob/master/src/tasks/AppleAppBuilder/Utils.cs#L75