stderr

Only valid as a type for a CommandLineTool output with no outputBinding set. The following

outputs:
  an_output_name:
  type: stderr
stderr: a_stderr_file

s equivalent to

outputs:
  an_output_name:
    type: File
    streamable: true
    outputBinding:
      glob: a_stderr_file
stderr: a_stderr_file

f there is no stderr name provided, a random filename will be created. For example, the following

outputs:
  an_output_name:
    type: stderr

s equivalent to

outputs:
  an_output_name:
    type: File
    streamable: true
    outputBinding:
      glob: random_stderr_filenameABCDEFG
stderr: random_stderr_filenameABCDEFG