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When ConnectError is used to wrap an Exception that was initialized without an error message, we are treated to a traceback with a rubbish line like this: ... ConnectError: Failed to establish session: Correct this to use the name of an exception as a fallback message: ... ConnectError: Failed to establish session: EOFError Better! Signed-off-by: John Snow <jsnow@redhat.com> Reported-by: Thomas Huth <thuth@redhat.com> Tested-by: Thomas Huth <thuth@redhat.com> Message-id: 20211111143719.2162525-3-jsnow@redhat.com Signed-off-by: John Snow <jsnow@redhat.com>