Standard error data was received where it was not expected. This is a subclass of IOError to preserve backward compatibility with the previous error behavior of getProcessOutput.

Instance Variable processEnded A Deferred which will fire when the process which produced the data on stderr has ended (exited and all file descriptors closed).
Method __init__ Undocumented
processEnded =
A Deferred which will fire when the process which produced the data on stderr has ended (exited and all file descriptors closed).
def __init__(self, text, processEnded): (source)
Undocumented
API Documentation for Twisted, generated by pydoctor at 2018-10-15 19:29:43.