…g an error.

This way the hir is "valid" and we can remove one more call to
`opt_node_id_to_hir_id` but an error is still emitted.

This is another partial fix for rust-lang#71104

This was supposed to land as part of rust-lang#72227. (I wish `git push` would
abort when you have uncommited changes.)

Suggest fixes and add error recovery for `use foo::self`

Fixes rust-lang#63741.
I have implemented 2 suggestions on how to fix a `use foo::self` import, however I feel like showing them both might be too verbose.

Additionally, I have also implemented error recovery as [menitoned](rust-lang#63741 (comment)) by @comex.

I believe r? @estebank deals with diagnostics.

…h-search-behaviour, r=kinnison

Fix going back in history to a search result page on firefox

This bug was actually firefox not re-running JS script when you go back in history. To trigger it on the current docs:

 * Make a search
 * Pick an element (which isn't on the same page as the current element!)
 * Go back in history

Instead of having the search results, you'll see the normal doc page. You can find a small explanation about it [here](http://web.archive.org/web/20100428053932/http://www.firefoxanswer.com/firefox/672-firefoxanswer.html).

r? @kinnison

cc @ollie27

…static-morse

Continue lowering for unsupported async generator instead of returning an error.

This way the hir is "valid" and we can remove one more call to
`opt_node_id_to_hir_id` but an error is still emitted.

This is another partial fix for rust-lang#71104

r? @eddyb

…king_issue, r=shepmaster

split_inclusive: add tracking issue number (72360)

Adds tracking issue number ( rust-lang#72360 ) to the unstable feature attributes.

…ulacrum

Remove unused dependencies

Remove some unused dependencies found while while working on rust-lang#72342.

…owup, r=Amanieu

Adjust the zero check in `RawVec::grow`.

This was supposed to land as part of rust-lang#72227. (I wish `git push` would
abort when you have uncommited changes.)

r? @Amanieu