Backed out changeset 66d0b0be41ed (bug 1493435) for build plain bustages

Cargo.lock

servo/components/fallible/Cargo.toml

servo/components/malloc_size_of/Cargo.toml

servo/components/selectors/Cargo.toml

servo/components/style/Cargo.toml

third_party/rust/smallvec/.cargo-checksum.json

third_party/rust/smallvec/.travis.yml

third_party/rust/smallvec/Cargo.toml

third_party/rust/smallvec/benches/bench.rs

third_party/rust/smallvec/lib.rs