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error[E0658]: use of unstable library feature 'structural_match'
--> $DIR/feature-gate.rs:29:6
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LL | impl std::marker::StructuralPartialEq for Foo { }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: see issue #31434 <https://github.com/rust-lang/rust/issues/31434> for more information
= help: add `#![feature(structural_match)]` to the crate attributes to enable
error[E0658]: use of unstable library feature 'structural_match'
--> $DIR/feature-gate.rs:31:6
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LL | impl std::marker::StructuralEq for Foo { }
| ^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: see issue #31434 <https://github.com/rust-lang/rust/issues/31434> for more information
= help: add `#![feature(structural_match)]` to the crate attributes to enable
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0658`.
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