one-time build issue: setupJdk18 mkdir spawn failed

I'm afraid it's not clear what's happening without a stack trace, sorry

[java] [gant] * What went wrong:
[java] [gant] Execution failed for task ':setupJdk18'.
[java] [gant] > A problem occurred starting process 'command 'mkdir''
[java] [gant]
[java] [gant] * Try:
[java] [gant] Run with --info or --debug option to get more log output. Run with --scan to get full insights.
[java] [gant]
[java] [gant] * Exception is:
[java] [gant] org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':setupJdk18'.
[java] [gant] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:110)
[java] [gant] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:77)
[java] [gant] at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51)
[java] [gant] at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:59)
[java] [gant] at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
[java] [gant] at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:59)
[java] [gant] at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:101)
[java] [gant] at org.gradle.api.internal.tasks.execution.FinalizeInputFilePropertiesTaskExecuter.execute(FinalizeInputFilePropertiesTaskExecuter.java:44)
[java] [gant] at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:91)
[java] [gant] at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:62)
[java] [gant] at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:59)
[java] [gant] at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
[java] [gant] at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
[java] [gant] at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
[java] [gant] at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.run(EventFiringTaskExecuter.java:51)
[java] [gant] at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:300)
[java] [gant] at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:292)
[java] [gant] at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:174)
[java] [gant] at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:90)
[java] [gant] at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31)
[java] [gant] at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:46)
[java] [gant] at org.gradle.execution.taskgraph.LocalTaskInfoExecutor.execute(LocalTaskInfoExecutor.java:42)
[java] [gant] at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareWorkItemExecutor.execute(DefaultTaskExecutionGraph.java:277)
[java] [gant] at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareWorkItemExecutor.execute(DefaultTaskExecutionGraph.java:262)
[java] [gant] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$ExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:135)
[java] [gant] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$ExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:130)
[java] [gant] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$ExecutorWorker.execute(DefaultTaskPlanExecutor.java:200)
[java] [gant] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$ExecutorWorker.executeWithWork(DefaultTaskPlanExecutor.java:191)
[java] [gant] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$ExecutorWorker.run(DefaultTaskPlanExecutor.java:130)
[java] [gant] at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
[java] [gant] at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
[java] [gant] at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
[java] [gant] Caused by: org.gradle.process.internal.ExecException: A problem occurred starting process 'command 'mkdir''
[java] [gant] at org.gradle.process.internal.DefaultExecHandle.execExceptionFor(DefaultExecHandle.java:231)
[java] [gant] at org.gradle.process.internal.DefaultExecHandle.setEndStateInfo(DefaultExecHandle.java:209)
[java] [gant] at org.gradle.process.internal.DefaultExecHandle.failed(DefaultExecHandle.java:355)
[java] [gant] at org.gradle.process.internal.ExecHandleRunner.run(ExecHandleRunner.java:85)
[java] [gant] at org.gradle.internal.operations.CurrentBuildOperationPreservingRunnable.run(CurrentBuildOperationPreservingRunnable.java:42)
[java] [gant] ... 3 more
[java] [gant] Caused by: net.rubygrapefruit.platform.NativeException: Could not start 'mkdir'
[java] [gant] at net.rubygrapefruit.platform.internal.DefaultProcessLauncher.start(DefaultProcessLauncher.java:27)
[java] [gant] at net.rubygrapefruit.platform.internal.WrapperProcessLauncher.start(WrapperProcessLauncher.java:36)
[java] [gant] at org.gradle.process.internal.ExecHandleRunner.run(ExecHandleRunner.java:67)
[java] [gant] ... 4 more
[java] [gant] Caused by: java.io.IOException: Cannot run program "mkdir" (in directory "/Volumes/A/MyIDEA/build/dependencies"): error=0, spawn failed
[java] [gant] at net.rubygrapefruit.platform.internal.DefaultProcessLauncher.start(DefaultProcessLauncher.java:25)
[java] [gant] ... 6 more
[java] [gant] Caused by: java.io.IOException: error=0, spawn failed
[java] [gant] ... 7 more
[java] [gant]

This is the interesting part. Where did the exception came from?

[java] [gant] Caused by: java.io.IOException: error=0, spawn failed
[java] [gant] ... 7 more
[java] [gant]

Btw, how do you start the task?

Good question. One would think that could not possibly fail. Could there be too many processes?

I believe I am just running ant to do the build, but it is coming from an application.

I have no idea :( I failed to find anything similar in Gradle's issue tracker. Maybe it makes sense to ask there?