mirror of https://github.com/rust-lang/rust
96 lines
4.2 KiB
Plaintext
96 lines
4.2 KiB
Plaintext
error: using `#![feature(effects)]` without enabling next trait solver globally
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= note: the next trait solver must be enabled globally for the effects feature to work correctly
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= help: use `-Znext-solver` to enable
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warning: this function depends on never type fallback being `()`
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--> $DIR/unsupported.rs:20:9
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LL | fn opaque_ret() -> impl Trait { unimplemented!() }
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
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= help: specify the types explicitly
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note: in edition 2024, the requirement `!: opaque::Trait` will fail
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--> $DIR/unsupported.rs:20:28
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LL | fn opaque_ret() -> impl Trait { unimplemented!() }
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| ^^^^^^^^^^
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= note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
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error[E0391]: cycle detected when computing type of `opaque::<impl at $DIR/unsupported.rs:26:5: 26:24>::{synthetic#0}`
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--> $DIR/unsupported.rs:27:25
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LL | reuse to_reuse::opaque_ret;
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| ^^^^^^^^^^
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note: ...which requires comparing an impl and trait method signature, inferring any hidden `impl Trait` types in the process...
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--> $DIR/unsupported.rs:27:25
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LL | reuse to_reuse::opaque_ret;
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| ^^^^^^^^^^
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= note: ...which again requires computing type of `opaque::<impl at $DIR/unsupported.rs:26:5: 26:24>::{synthetic#0}`, completing the cycle
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note: cycle used when checking that `opaque::<impl at $DIR/unsupported.rs:26:5: 26:24>` is well-formed
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--> $DIR/unsupported.rs:26:5
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LL | impl ToReuse for u8 {
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| ^^^^^^^^^^^^^^^^^^^
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= note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
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warning: this function depends on never type fallback being `()`
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--> $DIR/unsupported.rs:14:9
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LL | pub fn opaque_ret() -> impl Trait { unimplemented!() }
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
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= help: specify the types explicitly
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note: in edition 2024, the requirement `!: opaque::Trait` will fail
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--> $DIR/unsupported.rs:14:32
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LL | pub fn opaque_ret() -> impl Trait { unimplemented!() }
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| ^^^^^^^^^^
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error[E0391]: cycle detected when computing type of `opaque::<impl at $DIR/unsupported.rs:29:5: 29:25>::{synthetic#0}`
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--> $DIR/unsupported.rs:30:24
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LL | reuse ToReuse::opaque_ret;
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| ^^^^^^^^^^
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note: ...which requires comparing an impl and trait method signature, inferring any hidden `impl Trait` types in the process...
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--> $DIR/unsupported.rs:30:24
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LL | reuse ToReuse::opaque_ret;
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| ^^^^^^^^^^
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= note: ...which again requires computing type of `opaque::<impl at $DIR/unsupported.rs:29:5: 29:25>::{synthetic#0}`, completing the cycle
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note: cycle used when checking that `opaque::<impl at $DIR/unsupported.rs:29:5: 29:25>` is well-formed
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--> $DIR/unsupported.rs:29:5
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LL | impl ToReuse for u16 {
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| ^^^^^^^^^^^^^^^^^^^^
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= note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
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error: recursive delegation is not supported yet
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--> $DIR/unsupported.rs:43:22
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LL | pub reuse to_reuse2::foo;
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| --- callee defined here
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...
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LL | reuse to_reuse1::foo;
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| ^^^
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error: delegation to a function with effect parameter is not supported yet
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--> $DIR/unsupported.rs:53:18
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LL | fn foo();
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| --------- callee defined here
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...
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LL | reuse Trait::foo;
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| ^^^
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error: aborting due to 5 previous errors; 2 warnings emitted
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For more information about this error, try `rustc --explain E0391`.
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