Auto merge of #64616 - Centril:rollup-du6728f, r=Centril

Rollup of 6 pull requests

Successful merges:

 - #63448 (fix Miri discriminant handling)
 - #64592 (Point at original span when emitting unreachable lint)
 - #64601 (Fix backticks in documentation)
 - #64606 (Remove unnecessary `mut` in doc example)
 - #64611 (rustbuild: Don't package libstd twice)
 - #64613 (rustbuild: Copy crate doc files fewer times)

Failed merges:

r? @ghost

Author: bors

src/bootstrap/dist.rs

@@ -762,7 +762,7 @@ impl Step for Analysis {
             return distdir(builder).join(format!("{}-{}.tar.gz", name, target));
         }
 
-        builder.ensure(Std { compiler, target });
+        builder.ensure(compile::Std { compiler, target });
 
         let image = tmpdir(builder).join(format!("{}-{}-image", name, target));
 

src/bootstrap/doc.rs

@@ -476,11 +476,11 @@ impl Step for Std {
                  .arg("--index-page").arg(&builder.src.join("src/doc/index.md"));
 
             builder.run(&mut cargo);
-            builder.cp_r(&my_out, &out);
         };
         for krate in &["alloc", "core", "std", "proc_macro", "test"] {
             run_cargo_rustdoc_for(krate);
         }
+        builder.cp_r(&my_out, &out);
     }
 }