branchmap: force Exception to bytes before logging Here was an instance where `black` mangled the formatting so that `pytype` didn't recognize the suppression directive. But it seems that the error was correct, and the code should follow other recent changes around exception conversion. File "/mnt/c/Users/Matt/hg/mercurial/branchmap.py", line 303, in fromfile: Function _bytestr.__init__ was called with the wrong arguments [wrong-arg-types] Expected: (self, ints: Iterable[int]) Actually passed: (self, ints: Exception) The following methods aren't implemented on Exception: __iter__ Differential Revision: https://phab.mercurial-scm.org/D10170