SSL errors on rust-lang

[iphydf]

We're using linkchecker to test our website. We'd like to link to rust docs, but they cause SSL errors. See #172 as well.

[brson]

Thanks for the report. From the linked issue:

URL        `https://www.rust-lang.org/en-US/documentation.html'
Name       `Start with Rust'
Parent URL file:///home/travis/build/TokTok/website/toktok-site/get-started.html, line 130, col 7
Real URL   https://www.rust-lang.org/en-US/documentation.html
Check time 0.592 seconds
Result     Error: SSLError: [Errno 1] _ssl.c:510: error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure

I don't know what this means.