rustc: Only suggest deleting extern crate if it works
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This commit updates one of the edition lints to only suggest deleting `extern crate` if it actually works. Otherwise this can yield some confusing behavior with rustfix specifically where if you accidentally deny the `rust_2018_idioms` lint in the 2015 edition it's suggesting features that don't work!
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May 12, 2018
Rollup of 13 pull requests Successful merges: - #50544 (Cleanup some dependencies) - #50545 (Made some functions in time module const) - #50550 (use fmt::Result where applicable) - #50558 (Remove all reference to DepGraph::work_products) - #50602 (Update canonicalize docs) - #50607 (Allocate Symbol strings from an arena) - #50613 (Migrate the toolstate update bot to rust-highfive) - #50624 (fs::write: Add example writing a &str) - #50634 (Do not silently truncate offsets for `read_at`/`write_at` on emscripten) - #50644 (AppVeyor: Read back trace from crash dump on failure.) - #50661 (Ignore non .rs files for tidy libcoretest) - #50663 (rustc: Allow an edition's feature on that edition) - #50667 (rustc: Only suggest deleting `extern crate` if it works) Failed merges:
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…-unless-works, r=Manishearth rustc: Only suggest deleting `extern crate` if it works This commit updates one of the edition lints to only suggest deleting `extern crate` if it actually works. Otherwise this can yield some confusing behavior with rustfix specifically where if you accidentally deny the `rust_2018_idioms` lint in the 2015 edition it's suggesting features that don't work!
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May 13, 2018
Rollup of 8 pull requests Successful merges: - #50624 (fs::write: Add example writing a &str) - #50634 (Do not silently truncate offsets for `read_at`/`write_at` on emscripten) - #50644 (AppVeyor: Read back trace from crash dump on failure.) - #50661 (Ignore non .rs files for tidy libcoretest) - #50663 (rustc: Allow an edition's feature on that edition) - #50667 (rustc: Only suggest deleting `extern crate` if it works) - #50670 (rustc: Include semicolon when removing `extern crate`) - #50678 (Update openbsd targets) Failed merges:
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This commit updates one of the edition lints to only suggest deleting
extern crateif it actually works. Otherwise this can yield some confusing behaviorwith rustfix specifically where if you accidentally deny the
rust_2018_idiomslint in the 2015 edition it's suggesting features that don't work!