Rollup merge of rust-lang#93742 - Mark-Simulacrum:skip-rustc-docs-com…

…plete, r=pietroalbini

Drop rustc-docs from complete profile

Addresses rust-lang#75833, but does not fully fix it -- we should support side-by-side installation of these ideally, but that's not currently possible.

r? `@pietroalbini`

src/tools/build-manifest/src/main.rs

@@ -386,7 +386,10 @@ impl Builder {
         // for users to install the additional component manually, if needed.
         if self.versions.channel() == "nightly" {
             self.extend_profile("complete", &mut manifest.profiles, &["rustc-dev"]);
-            self.extend_profile("complete", &mut manifest.profiles, &["rustc-docs"]);
+            // Do not include the rustc-docs component for now, as it causes
+            // conflicts with the rust-docs component when installed. See
+            // #75833.
+            // self.extend_profile("complete", &mut manifest.profiles, &["rustc-docs"]);
         }
     }