Reordered imports and comments mixed up

[NickLarsenNZ]

I've noticed an issue where comments on imports end up on the wrong line after the imports are reordered:

Before hitting save:

After hitting save:

Notice the comment on the wrong line

rust-analyzer version: rust-analyzer version: 0add6e95e 2021-12-20 stable

rustc version: rustc 1.57.0 (f1edd0429 2021-11-29)

[Veykril]

We merely invoke rustfmt on save, so this is a bug with rustfmt, not rust-analyzer.

[NickLarsenNZ]

I wasn't aware, thanks @Veykril.

For posterity, the relevant rustfmt issues are:

• Comments on use statements incorrectly rearranged when use statements are rearranged rustfmt#3720
• Rustfmt puts single-line comment after wrong import when reordering imports rustfmt#4027 (duplicate?)