Bump `rustc-perf` checkout for metrics, replace webrender, diesel and ripgrep with newer versions
The previous versions were removed hence the updates. The metric results for the changed ones are disconnected now as to not muddle things up.
I think it's worth it for us to occasionally bump the `rustc-perf` checkout, as it allows us to include more interesting new targets.
Notably, the newer diesel is 3 times as fast to analyze as the one of the current checkout.
Add a few more `db.unwind_if_cancelled()` calls
Judging from a profile sent by a friend, the borrowck query took up a significant amount of time in their project which might be the cause for some unresponsiveness as nothing in the mir stack currently unwinds on cancellation
Shuffle some locking around
The main thread is still occasionally blocking on something and I am unsure what the cause might be. This will hopefully help somewhat
Editor itself is able to invalidate hints after edits, and /refresh was
sent after editor reports changes to the language server.
This forces the editor to either query & invalidate the hints twice
after every edit, or wait for /refresh to come before querying the
hints.
Both options are rather useless, so instead, send a request on server
startup only: client editors do not know when the server actually starts
up, this will help to query the initial hints after editor was open and
the server was still starting up.
Fix cargo handle logging in flycheck
This PR has two commits, so it's probably easier to review them separately:
(1) Rename `CargoHandle` to `CommandHandle`, as the command may not be a cargo command.
(2) Logging should format the current command, rather than calling `check_command()` again. This ensures that any later configuration changes don't cause us to log incorrect information.
