> gh repo clone rust-lang/rustc-dev-guide ... > cd rustc-dev-guide > mdbook build --open 2025-01-10 23:07:31 [INFO] (mdbook::book): Book building has started 2025-01-10 23:07:32 [INFO] (mdbook::book): Running the html backend 2025-01-10 23:07:34 [INFO] (mdbook::book): Running the linkcheck backend 2025-01-10 23:07:34 [INFO] (mdbook::renderer): Invoking the "linkcheck" renderer 2025-01-10 23:07:34 [ERROR] (mdbook::utils): Error: Rendering failed 2025-01-10 23:07:34 [ERROR] (mdbook::utils): Caused By: Unable to start the backend 2025-01-10 23:07:34 [ERROR] (mdbook::utils): Caused By: %1 Not a valid Win32 application. (os error 193)