Anders Kaseorg ccad00b7e9 provision: Suppress exception chaining for CalledProcessError retries. ...

When exception is raised inside an exception handler, Python 3
helpfully prints both tracebacks separated by “During handling of the
above exception, another exception occurred:”.  But when we’re using
an exception handler to retry the same operation, multiple tracebacks
are just noise.  Suppress the earlier one using PEP 409 syntax.

Signed-off-by: Anders Kaseorg <anders@zulip.com>

2021-03-03 16:25:03 -08:00

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