Auto merge of #70330 - Centril:rollup-ts0clvx, r=Centril

Rollup of 9 pull requests

Successful merges:

 - #68700 (Add Wake trait for safe construction of Wakers.)
 - #69494 (Stabilize --crate-version option in rustdoc)
 - #70080 (rustc_mir: remove extra space when pretty-printing MIR.)
 - #70195 (Add test for issue #53275)
 - #70199 (Revised span-to-lines conversion to produce an empty vec on DUMMY_SP.)
 - #70299 (add err_machine_stop macro)
 - #70300 (Reword unused variable warning)
 - #70315 (Rename remaining occurences of Void to Opaque.)
 - #70318 (Split long derive lists into two derive attributes.)

Failed merges:

r? @ghost

Author: bors

src/bootstrap/bin/rustdoc.rs

@@ -52,12 +52,7 @@ fn main() {
     // Bootstrap's Cargo-command builder sets this variable to the current Rust version; let's pick
     // it up so we can make rustdoc print this into the docs
     if let Some(version) = env::var_os("RUSTDOC_CRATE_VERSION") {
-        // This "unstable-options" can be removed when `--crate-version` is stabilized
-        if !has_unstable {
-            cmd.arg("-Z").arg("unstable-options");
-        }
         cmd.arg("--crate-version").arg(version);
-        has_unstable = true;
     }
 
     // Needed to be able to run all rustdoc tests.

src/bootstrap/doc.rs

@@ -313,6 +313,9 @@ impl Step for Standalone {
             }
 
             let mut cmd = builder.rustdoc_cmd(compiler);
+            // Needed for --index-page flag
+            cmd.arg("-Z").arg("unstable-options");
+
             cmd.arg("--html-after-content")
                 .arg(&footer)
                 .arg("--html-before-content")
@@ -395,7 +398,7 @@ impl Step for Std {
 
             // Keep a whitelist so we do not build internal stdlib crates, these will be
             // build by the rustc step later if enabled.
-            cargo.arg("-Z").arg("unstable-options").arg("-p").arg(package);
+            cargo.arg("-p").arg(package);
             // Create all crate output directories first to make sure rustdoc uses
             // relative links.
             // FIXME: Cargo should probably do this itself.
@@ -406,6 +409,8 @@ impl Step for Std {
                 .arg("rust.css")
                 .arg("--markdown-no-toc")
                 .arg("--generate-redirect-pages")
+                .arg("-Z")
+                .arg("unstable-options")
                 .arg("--resource-suffix")
                 .arg(crate::channel::CFG_RELEASE_NUM)
                 .arg("--index-page")