Prior to a change, it would only look at types in bounds. When it started looking for consts,
shadowing type variables with a const would cause an ICE, so now defer looking at consts only if
there are no types present.

single_char_pattern and to_string_in_format_args

…=yaahc

kmc-solid: Fix off-by-one error in `SystemTime::now`

Fixes a miscalculation of `SystemTime`  on the [`*-kmc-solid_*`](https://doc.rust-lang.org/nightly/rustc/platform-support/kmc-solid.html) Tier 3 targets.

Unlike the identically-named libc counterpart `tm::tm_mon`, `SOLID_RTC_TIME::tm_mon` contains a 1-based month number.

…t, r=Mark-Simulacrum

Add rustdoc info to jsondocck output

Makes debugging issues in the generated output simpler by handling emitted logs and etc.

… r=Mark-Simulacrum

Add package.json in gitignore

It happened a few times (last one is https://github.com/rust-lang/rust/pull/93537/files#r796757998) so I think it's fine to ignore this file to prevent it to happen again in the future. :)

r? ``@Mark-Simulacrum``

Fix ret > 1 bound if shadowed by const

Prior to a change, it would only look at types in bounds. When it started looking for consts,
shadowing type variables with a const would cause an ICE, so now defer looking at consts only if
there are no types present.

cc `````@compiler-errors`````
Should Fix rust-lang#93553

clippy::perf fixes

single_char_pattern and to_string_in_format_args

…to-iter, r=oli-obk

rustc_mir_dataflow: use iter::once instead of Some().into_iter