Auto merge of #116408 - matthiaskrgr:rollup-hmolg4m, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - #115961 (Replace 'mutex' with 'lock' in RwLock documentation)
 - #116146 (Clarify `arg` and `args` documentation)
 - #116363 (Adapt `todo!` documentation to mention displaying custom values)
 - #116365 (bootstrap: make copying linker binaries conditional)
 - #116388 (rustdoc: fix & clean up handling of cross-crate higher-ranked parameters)
 - #116393 (Emit feature gate *warning* for `auto` traits pre-expansion)
 - #116395 (Mark myself as vacation or whatever)

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

1 files changed, 7 insertions, 5 deletions

diff --git a/src/bootstrap/compile.rs b/src/bootstrap/compile.rs
index daf0798357b..cf1f97c5b41 100644
--- a/src/bootstrap/compile.rs
+++ b/src/bootstrap/compile.rs
@@ -167,12 +167,14 @@ impl Step for Std {
                 .rustc_snapshot_sysroot()
                 .join("lib")
                 .join("rustlib")
-                .join(&compiler.host.triple)
+                .join(compiler.host.triple)
                 .join("bin");
-            let target_sysroot_bin =
-                builder.sysroot_libdir(compiler, target).parent().unwrap().join("bin");
-            t!(fs::create_dir_all(&target_sysroot_bin));
-            builder.cp_r(&src_sysroot_bin, &target_sysroot_bin);
+            if src_sysroot_bin.exists() {
+                let target_sysroot_bin =
+                    builder.sysroot_libdir(compiler, target).parent().unwrap().join("bin");
+                t!(fs::create_dir_all(&target_sysroot_bin));
+                builder.cp_r(&src_sysroot_bin, &target_sysroot_bin);
+            }
         }
 
         let mut cargo = builder.cargo(compiler, Mode::Std, SourceType::InTree, target, "build");