Compilation error with nightly: the trait ~const Deref is not implemented for String

[ogoffart]

Code

const _: fn(&String) = |s| { &*s as &str; };

Compiles in stable rust (1.64) as well as in beta.
But in nightly, we get this compilation error:

error[[E0277]](https://doc.rust-lang.org/nightly/error-index.html#E0277): the trait bound `String: Deref` is not satisfied
 --> src/lib.rs:4:30
  |
4 | const _: fn(&String) = |s| { &*s as &str; };
  |                              ^^^ the trait `~const Deref` is not implemented for `String`
  |
note: the trait `Deref` is implemented for `String`, but that implementation is not `const`
 --> src/lib.rs:4:30
  |
4 | const _: fn(&String) = |s| { &*s as &str; };
  |                              ^^^

For more information about this error, try `rustc --explain E0277`.
error: could not compile `playground` due to previous error

playground link: https://play.rust-lang.org/?version=nightly&mode=debug&edition=2021&gist=c4decfd8064f4074814df6e0d4e0859c

Version it worked on

1.64, and beta

Version with regression

current nightly

[Noratrieb]

searched nightlies: from nightly-2022-08-01 to nightly-2022-10-24
regressed nightly: nightly-2022-09-23
searched commit range: 9062b78...e7119a0
regressed commit: 7a8636c

bisected with cargo-bisect-rustc v0.6.4

Host triple: x86_64-unknown-linux-gnu
Reproduce with:

cargo bisect-rustc 2022-08-01 --regress error --access github

[Noratrieb]

@fee1-dead @oli-obk

[oli-obk]

Seems like closures pick the constness of their parent when they should always be notconst