Rust 1.92.0 pre-release testing

[tdelmas]

Rust Release Notes :

• iter::Repeat::last and count will now panic, rather than looping infinitely.

It seems they added a panic! for last without documenting it, or am I missing it? (count does document the panic! in Iterator: Iterator in std::iter - Rust)

• last in Iterator in std::iter - Rust
• last in Repeat in std::iter - Rust