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error[E0277]: the trait bound `[closure@$DIR/issue-68542-closure-in-array-len.rs:6:14: 6:16]: Fn<()>` is not satisfied
--> $DIR/issue-68542-closure-in-array-len.rs:6:13
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LL | a: [(); (|| { 0 })()]
| ^^^^^^^^^^^^ expected an `Fn<()>` closure, found `[closure@$DIR/issue-68542-closure-in-array-len.rs:6:14: 6:16]`
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= help: the trait `~const Fn<()>` is not implemented for closure `[closure@$DIR/issue-68542-closure-in-array-len.rs:6:14: 6:16]`
note: the trait `Fn<()>` is implemented for `[closure@$DIR/issue-68542-closure-in-array-len.rs:6:14: 6:16]`, but that implementation is not `const`
--> $DIR/issue-68542-closure-in-array-len.rs:6:13
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LL | a: [(); (|| { 0 })()]
| ^^^^^^^^^^^^
= note: wrap the `[closure@$DIR/issue-68542-closure-in-array-len.rs:6:14: 6:16]` in a closure with no arguments: `|| { /* code */ }`
error[E0015]: cannot call non-const closure in constants
--> $DIR/issue-68542-closure-in-array-len.rs:6:13
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LL | a: [(); (|| { 0 })()]
| ^^^^^^^^^^^^
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= note: closures need an RFC before allowed to be called in constants
= note: calls in constants are limited to constant functions, tuple structs and tuple variants
= help: add `#![feature(const_trait_impl)]` to the crate attributes to enable
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0015, E0277.
For more information about an error, try `rustc --explain E0015`.
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