Update cargo 12 commits in beb8fcb5248dc2e6aa488af9613216d5ccb31c6a..759b6161a328db1d4863139e90875308ecd25a75 2019-04-30 23:58:00 +0000 to 2019-05-06 20:47:49 +0000 - Small things (rust-lang/cargo#6910) - Fix skipping over invalid registry packages (rust-lang/cargo#6912) - Fixes rust-lang/cargo#6874 (rust-lang/cargo#6905) - doc: Format examples of version to ease reading (rust-lang/cargo#6907) - fix more typos (codespell) (rust-lang/cargo#6903) - Parse less JSON on null builds (rust-lang/cargo#6880) - chore: Update opener to 0.4 (rust-lang/cargo#6902) - Update documentation for auto-discovery. (rust-lang/cargo#6898) - Update some doc links. (rust-lang/cargo#6897) - Default Cargo.toml template provide help for completing the metadata (rust-lang/cargo#6881) - Run 'cargo fmt --all' (rust-lang/cargo#6896) - Refactor command definition (rust-lang/cargo#6894)