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error: `~const` can only be applied to `#[const_trait]` traits
--> $DIR/const-closure-trait-method-fail.rs:14:32
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LL | const fn need_const_closure<T: ~const FnOnce(()) -> i32>(x: T) -> i32 {
| ^^^^^^ can't be applied to `FnOnce`
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note: `FnOnce` can't be used with `~const` because it isn't annotated with `#[const_trait]`
--> $SRC_DIR/core/src/ops/function.rs:LL:COL
error: `~const` can only be applied to `#[const_trait]` traits
--> $DIR/const-closure-trait-method-fail.rs:14:32
|
LL | const fn need_const_closure<T: ~const FnOnce(()) -> i32>(x: T) -> i32 {
| ^^^^^^ can't be applied to `FnOnce`
|
note: `FnOnce` can't be used with `~const` because it isn't annotated with `#[const_trait]`
--> $SRC_DIR/core/src/ops/function.rs:LL:COL
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
error[E0015]: cannot call non-const closure in constant functions
--> $DIR/const-closure-trait-method-fail.rs:15:5
|
LL | x(())
| ^^^^^
|
= note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0015`.
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