Rollup of 6 pull requests

[matthiaskrgr]

Successful merges:

• Make all proc-macro back-compat lints deny-by-default #88041 (Make all proc-macro back-compat lints deny-by-default)
• resolve: Use NameBinding for local variables and generic parameters #89100 (resolve: Use NameBinding for local variables and generic parameters)
• Fix ICE with let...else and ref mut #89965 (Fix ICE with let...else and ref mut)
• Nicer error message if the user attempts to do let...else if #89974 (Nicer error message if the user attempts to do let...else if)
• Check implementing type for #[doc(hidden)] #89987 (Check implementing type for #[doc(hidden)])
• rustc_span: Ident::invalid -> Ident::empty #89990 (rustc_span: Ident::invalid -> Ident::empty)

Failed merges:

r? @ghost
@rustbot modify labels: rollup

Create a similar rollup

[matthiaskrgr]

@bors r+ p=6 rollup=never

[bors]

📌 Commit 5ce733a has been approved by matthiaskrgr

[matthiaskrgr]

Running x.py test locally gives an error
tidy error: /home/matthias/vcs/github/rust/compiler/rustc_resolve/src/lib.rs: too many lines (3043) (add // ignore-tidy-filelength to the file to suppress this error)

[rust-log-analyzer]

The job mingw-check failed! Check out the build log: (web)(plain)

Click to see the possible cause of the failure (guessed by this bot)

configure: rust.channel := nightly
configure: rust.debug-assertions := True
configure: llvm.assertions := True
configure: dist.missing-tools := True
configure: build.configure-args := ['--enable-sccache', '--disable-manage-submodu ...
configure: writing `config.toml` in current directory
configure: configure: run `python /checkout/x.py --help`
configure: ---
* highest error code: E0785
Found 501 error codes
Found 0 error codes with no tests
Done!
tidy error: /checkout/compiler/rustc_resolve/src/lib.rs: too many lines (3043) (add `// ignore-tidy-filelength` to the file to suppress this error)
some tidy checks failed
command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0-tools-bin/rust-tidy" "/checkout" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "/checkout/obj/build" "16"
Build completed unsuccessfully in 0:00:12

[matthiaskrgr]

@bors r-
😓