Relay publishing malformed 'dirreq-v3-reqs' line

Starting fourteen hours ago relay C871C91489886D5E2E94C13EA1A5FDC4B6DC5204 started publishing an extrainfo descriptor that has non-ascii content on its dirreq-v3-reqs line. This causes Stem (and possibly MetricsLib) to choke, and should be getting rejected by the DirAuths.

This descriptor can presently be fetched with...

% curl http://193.23.244.244:80/tor/extra/fp/C871C91489886D5E2E94C13EA1A5FDC4B6DC5204

See attached for a copy.

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