Auto merge of #81414 - rylev:fetch-rmeta-crates, r=petrochenkov

Check for rmeta crates when getting existing crates from cache

This change makes sure to check for rmeta files when resolving crates instead of always going to disk in that case.

Author: bors

compiler/rustc_metadata/src/creader.rs

@@ -253,8 +253,9 @@ impl<'a> CrateLoader<'a> {
                 if let Some(mut files) = entry.files() {
                     if files.any(|l| {
                         let l = fs::canonicalize(l).unwrap_or(l.clone().into());
-                        source.dylib.as_ref().map(|p| &p.0) == Some(&l)
-                            || source.rlib.as_ref().map(|p| &p.0) == Some(&l)
+                        source.dylib.as_ref().map(|(p, _)| p) == Some(&l)
+                            || source.rlib.as_ref().map(|(p, _)| p) == Some(&l)
+                            || source.rmeta.as_ref().map(|(p, _)| p) == Some(&l)
                     }) {
                         ret = Some(cnum);
                     }