Auto merge of rust-lang#104607 - matthiaskrgr:rollup-9s589me, r=matthiaskrgr

Rollup of 10 pull requests

Successful merges:

 - rust-lang#103117 (Use `IsTerminal` in place of `atty`)
 - rust-lang#103969 (Partial support for running UI tests with `download-rustc`)
 - rust-lang#103989 (Fix build of std for thumbv7a-pc-windows-msvc)
 - rust-lang#104076 (fix sysroot issue which appears for ci downloaded rustc)
 - rust-lang#104469 (Make "long type" printing type aware and trim types in E0275)
 - rust-lang#104497 (detect () to avoid redundant <> suggestion for type)
 - rust-lang#104577 (Don't focus on notable trait parent when hiding it)
 - rust-lang#104587 (Update cargo)
 - rust-lang#104593 (Improve spans for RPITIT object-safety errors)
 - rust-lang#104604 (Migrate top buttons style to CSS variables)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

panic_unwind/src/lib.rs

@@ -42,7 +42,8 @@ cfg_if::cfg_if! {
         // L4Re is unix family but does not yet support unwinding.
         #[path = "dummy.rs"]
         mod real_imp;
-    } else if #[cfg(target_env = "msvc")] {
+    } else if #[cfg(all(target_env = "msvc", not(target_arch = "arm")))] {
+        // LLVM does not support unwinding on 32 bit ARM msvc (thumbv7a-pc-windows-msvc)
         #[path = "seh.rs"]
         mod real_imp;
     } else if #[cfg(any(