MIME boundary outputs on IRC

something in doctor (or elsewhere?) is sending this in #tor-bots from time to time. this is the last occurrence i can find:

08:05:36 <+nsa> or: --===============5159792809200992532==
08:05:36 <+nsa> or: Content-Type: text/plain; charset="us-ascii"
08:05:36 <+nsa> or: MIME-Version: 1.0
08:05:36 <+nsa> or: Content-Transfer-Encoding: 7bit
08:05:36 <+nsa> or: [consensus-health] NOTICE: Authorities disagree about the BadExit flag for 90B818902D42800A5E5F31A2C0D9A2B0B31EAC5F (with flag: longclaw, without 
                flag: moria1, Faravahar, gabelmoo)
08:05:37 <+nsa> or: [consensus-health] NOTICE: Authorities disagree about the BadExit flag for 9FD8AF6546A248A4C7F07A79325496015D799195 (with flag: longclaw, without 
                flag: moria1, Faravahar, gabelmoo)
08:05:37 <+nsa> or: [consensus-health] NOTICE: Authorities disagree about the BadExit flag for B3195576E1E6A8F342C312A2F0D1AFCAAF5A5EDF (with flag: longclaw, without 
                flag: moria1, Faravahar, gabelmoo)
08:05:39 <+nsa> or: --===============5159792809200992532==--

that is this morning, local time (UTC-5), so around 13:05 UTC. it seems like something that used to send a message as a plain text email started sending it as MIME-encoded, and the nsa bot doesn't handle that correctly.

it's really just a cosmetic thing. it's not bothersome enough that i have immediately filed it (it's been going on for months at least), but it's ugly enough that i figured i would ping @gk about it, and he suggested i file this ticket, so here we are.

/cc @arma