A bit more explanation, this is the old output:
note: tuple variant defined here --> /wrkdirs/usr/ports/lang/rust/work/rustc-1.77.0-src/library/core/src/result.rs:506:5 help: you can convert an `i64` to a `u64` and panic if the converted value doesn't fit
And the new output for the same error:
note: tuple variant defined here --> /usr/local/lib/rustlib/src/rust/library/core/src/result.rs:506:5 | 506 | Ok(#[stable(feature = "rust1", since = "1.0.0")] T), | ^^ help: you can convert an `i64` to a `u64` and panic if the converted value doesn't fit