[ebuild     U ] dev-lang/rust-1.18.0 [1.16.0] USE="jemalloc%* llvm%* -clang -debug -doc (-libcxx%)" 
[ebuild  N    ] virtual/rust-1.18.0 
[ebuild     U ] dev-util/cargo-0.19.0-r1 [0.17.0] USE="-doc -libressl (-debug%)"