rustdoc documents items inside expressions when ran on binary crates

[rodrimati1992]

I tried running cargo doc on this binary crate:

const A: u8 = {const B: u8 = 0; B};
fn main() {}

I expected to see this happen: only the A constant and main functions are documented

Instead, this happened: All of A, B, and main are documented:

Meta

rustc --version --verbose:

rustc 1.69.0 (84c898d65 2023-04-16)
binary: rustc
commit-hash: 84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc
commit-date: 2023-04-16
host: x86_64-unknown-linux-gnu
release: 1.69.0
LLVM version: 15.0.7

[eval-exec]

B won't documented by 1.72.0-nightly. I don't known which commit cause this.