Use repr instead of str for monitoring fail history (#1966)
Use repr instead of str for monitoring fail history (#1966)

repr is a better format for this field. For example, it usually
contains more context such as the exception class name:

>>> str(v)
'3'
>>> repr(v)
'KeyError(3)'
Parsl/parsl,Parsl/parsl,Parsl/parsl,Parsl/parsl