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I ran into this when using quick_error. Minimal test case (along with a Cargo.toml including quick-error="*" in [dependencies]):
quick-error="*"
[dependencies]
#![warn(unused_extern_crates)] #[macro_use] extern crate quick_error; quick_error! { #[derive(Debug)] enum Error { Msg(msg: String) { from() from(s: &'static str) -> (s.to_string()) description(msg) display("{}", msg) } }
This produces:
src/main.rs:4:1: 4:26 warning: unused extern crate src/main.rs:4 extern crate quick_error; ^~~~~~~~~~~~~~~~~~~~~~~~~ src/main.rs:1:9: 1:29 note: lint level defined here src/main.rs:1 #![warn(unused_extern_crates)] ^~~~~~~~~~~~~~~~~~~~
The text was updated successfully, but these errors were encountered:
Closing as a duplicate of #30849. Thanks!
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I ran into this when using quick_error. Minimal test case (along with a Cargo.toml including
quick-error="*"
in[dependencies]
):This produces:
The text was updated successfully, but these errors were encountered: