rustfmt gives up on method chain with closure with very long return type

[jrose-signal]

rustfmt refuses to format the following statement (reduced from a real-world example):

fn test() {
    let output: Vec<_> = input
            .into_iter()
            .map(|serialized| -> Result<long_crate::LongCrateTypeName, long_crate::DeserializationFailure> {
                Ok(serialized)
            })
            .map_err(|_| {
                // A comment
                Failure
            })?;
}

The long type names seem to be at fault; shortening either of them results in a successful format. I realize there's not a great way to format that type, but giving up on the entire statement was surprising.

Tested on play.rust-lang.org using the 2024-02-04 07dca48 build of rustfmt.

[ytmimi]

Thanks for the report. This is another duplicate of #3863

[jrose-signal]

Ah, not specific to types. Thanks!