Don't need extern crate in 2018 #6752
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… r=ehuss Don't need extern crate in 2018 The example in 2.4 Dependencies uses `extern crate` which you don't need in edition 2018. As a beginner Rustacean I find it's confusing that so many examples are still using `extern crate` so here is a pull request to fix that.
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Update cargo Update cargo 22 commits in 0e35bd8af0ec72d3225c4819b330b94628f0e9d0..63231f438a2b5b84ccf319a5de22343ee0316323 2019-03-13 06:52:51 +0000 to 2019-03-27 12:26:45 +0000 - Code cleanup (rust-lang/cargo#6787) - Add cargo:rustc-link-arg to pass custom linker arguments (rust-lang/cargo#6298) - Testsuite: remove some unnecessary is_nightly checks. (rust-lang/cargo#6786) - cargo metadata: Don't show `null` deps. (rust-lang/cargo#6534) - Some fingerprint cleanup. (rust-lang/cargo#6785) - Fix fingerprint for canceled build script. (rust-lang/cargo#6782) - Canonicalize default target if it ends with `.json` (rust-lang/cargo#6778) - Fix setting `panic=unwind` compiling lib a extra time. (rust-lang/cargo#6781) - Always nicely show errors from crates.io if possible (rust-lang/cargo#6771) - Testsuite: Make `cwd()` relative to project root. (rust-lang/cargo#6768) - Allow `cargo fix` if gitignore matches root working dir. (rust-lang/cargo#6767) - Remove redundant imports (rust-lang/cargo#6763) - Handle backcompat hazard with `toml` crate (rust-lang/cargo#6761) - Fix spurious error in dirty_both_lib_and_test. (rust-lang/cargo#6756) - Update toml requirement from 0.4.2 to 0.5.0 (rust-lang/cargo#6760) - Reuse std::env::consts::EXE_SUFFIX (rust-lang/cargo#6758) - Proptest 0.9.1 (rust-lang/cargo#6753) - Don't need extern crate in 2018 (rust-lang/cargo#6752) - Release a jobserver token while locking a file (rust-lang/cargo#6748) - Minor doc fix for publish command synopsis (rust-lang/cargo#6749) - Stricter package change detection. (rust-lang/cargo#6740) - Fix resolving yanked crates when using a local registry. (rust-lang/cargo#6742)
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The example in 2.4 Dependencies uses
extern cratewhich you don't need in edition 2018. As a beginner Rustacean I find it's confusing that so many examples are still usingextern crateso here is a pull request to fix that.