0.9 1.0 1.7 alpha alpha2 alumni armv7 authors beginners beta bump canonical coc cocdoc community-edits community contributions cryptape dl doc-contribs-faq docs-rs docs docteam eddyb ex faq-list faq-style faq forum friends friends2 gh-pages hack install-updates install invalidate layout logos margin master msvc new next-release next nobold one-nine ones parity plat plats rachael randomfriends release resources rustup-dir rustup security titles travis tweaks typo user-groups users www