Auto merge of #125443 - nnethercote:rustfmt-use-decls, r=lcnr,cuviper,GuillaumeGomez

rustfmt `use` declarations

This PR implements https://github.com/rust-lang/compiler-team/issues/750, which changes how `use` declarations are formatted by adding these options to `rustfmt.toml`:
```
group_imports = "StdExternalCrate"
imports_granularity = "Module"
```

r? `@ghost`

1 files changed, 5 insertions, 5 deletions

diff --git a/compiler/rustc_session/src/utils.rs b/compiler/rustc_session/src/utils.rs
index f70a53eeb41..37528a4425f 100644
--- a/compiler/rustc_session/src/utils.rs
+++ b/compiler/rustc_session/src/utils.rs
@@ -1,11 +1,11 @@
-use crate::session::Session;
+use std::path::{Path, PathBuf};
+use std::sync::OnceLock;
+
 use rustc_data_structures::profiling::VerboseTimingGuard;
 use rustc_fs_util::try_canonicalize;
 use rustc_macros::{Decodable, Encodable, HashStable_Generic};
-use std::{
-    path::{Path, PathBuf},
-    sync::OnceLock,
-};
+
+use crate::session::Session;
 
 impl Session {
     pub fn timer(&self, what: &'static str) -> VerboseTimingGuard<'_> {