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ERROR:rustc_lint::builtin: span mc spanspam when compiling clippy_lints #1743

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Arnavion opened this issue May 10, 2017 · 0 comments · Fixed by #1742
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ERROR:rustc_lint::builtin: span mc spanspam when compiling clippy_lints #1743

Arnavion opened this issue May 10, 2017 · 0 comments · Fixed by #1742

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@Arnavion
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rustc 1.19.0-nightly (d3abc80b3 2017-05-09)

$ cargo install -j1 --force clippy
<snip successful compilation of other deps>
   Compiling clippy_lints v0.0.131
ERROR:rustc_lint::builtin: span mc spanspam
ERROR:rustc_lint::builtin: span mc spanspam
ERROR:rustc_lint::builtin: span mc spanspam
ERROR:rustc_lint::builtin: span mc spanspam
<snip successful compilation of clippy>

The message was introduced in rust-lang/rust@de7dda7#diff-1651ba5b47f9ffa648d59265d3f94becR721 by rust-lang/rust#41293

It compiles successfully so it's not a big problem. Just seems to be some lint firing against float literals in patterns in clippy_lints (perhaps https://github.com/Manishearth/rust-clippy/blob/3b3e47f4/clippy_lints/src/zero_div_zero.rs#L41-L42 ?)
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Fix a future compat lint that we triggered rust-lang/rust-clippy
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@Arnavion