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Rollup merge of #89520 - GuillaumeGomez:cache-rustdoc-gui-test, r=Mark-Simulacrum

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Don't rebuild GUI test crates every time you run test src/test/rustdoc-gui

This method has multiple advantages:

 * It'll completely remove the rustdoc-GUI test doc folder if rustdoc was updated
 * It'll rebuild GUI test crates only they have been updated

All in all, it's quite convenient! (even more with https://github.com/rust-lang/rust/pull/88816)

r? ```@Mark-Simulacrum```
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Matthias Krüger 2021-10-10 18:22:20 +02:00 committed by GitHub
commit f1d0ce70b6
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src/bootstrap/test.rs
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@ -898,7 +898,7 @@ impl Step for RustdocGUI {
let out_dir = builder.test_out(self.target).join("rustdoc-gui");
// We remove existing folder to be sure there won't be artifacts remaining.
let _ = fs::remove_dir_all(&out_dir);
builder.clear_if_dirty(&out_dir, &builder.rustdoc(self.compiler));
let src_path = builder.build.src.join("src/test/rustdoc-gui/src");
// We generate docs for the libraries present in the rustdoc-gui's src folder.