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Fix "Multiple applicable provide methods in scope" #190

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merged 6 commits into from
Sep 13, 2022
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dtolnay
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@dtolnay dtolnay commented Sep 13, 2022

Fixes #185.

Currently fails with:

    error[E0034]: multiple applicable items in scope
       --> tests/test_backtrace.rs:165:13
        |
    165 |             x: std::io::Error,
        |             ^ multiple `provide` found
        |
        = note: candidate #1 is defined in an impl of the trait `Provider` for the type `E`
        = note: candidate #2 is defined in an impl of the trait `std::error::Error` for the type `std::io::Error`
    help: disambiguate the associated function for candidate #1
        |
    165 |             Provider::provide(&x, Error): std::io::Error,
        |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    help: disambiguate the associated function for candidate #2
        |
    165 |             std::error::Error::provide(&x, Error): std::io::Error,
        |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@gakonst
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gakonst commented Sep 21, 2022

Did this PR somehow break things? I added thiserror on a new crate and got:

error[E0554]: `#![feature]` may not be used on the stable release channel
   --> /Users/georgios/.cargo/registry/src/github.com-1ecc6299db9ec823/thiserror-1.0.35/src/lib.rs:211:34
    |
211 | #![cfg_attr(provide_any, feature(provide_any))]
    |                                  ^^^^^^^^^^^

For more information about this error, try `rustc --explain E0554`.
rustc --version
rustc 1.63.0 (4b91a6ea7 2022-08-08)

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Multiple applicable provide methods in scope
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