14     let rustc = rustc_minor_version().unwrap_or(u32::MAX);  in main()  localVariable
16     if rustc >= 80 {  in main()
46     if rustc < 57 {  in main()
54     if rustc < 66 {  in main()
59     if rustc < 79 {  in main()
149     let rustc = cargo_env_var("RUSTC");  in compile_probe()  localVariable
164     let mut rustc = rustc_wrapper  in compile_probe()  localVariable
167         .chain(iter::once(rustc));  in compile_probe()
168     let mut cmd = Command::new(rustc.next().unwrap());  in compile_probe()
169     cmd.args(rustc);  in compile_probe()
217     let rustc = cargo_env_var("RUSTC");  in rustc_minor_version()  localVariable
218     let output = Command::new(rustc).arg("--version").output().ok()?;  in rustc_minor_version()