62             Some(status) if status.success() => println!("cargo:rustc-cfg=backtrace"),  in main()
67     let rustc = match rustc_minor_version() {  in main()  localVariable
68         Some(rustc) => rustc,  in main()
72     if rustc < 51 {  in main()
73         println!("cargo:rustc-cfg=anyhow_no_ptr_addr_of");  in main()
76     if rustc < 52 {  in main()
77         println!("cargo:rustc-cfg=anyhow_no_fmt_arguments_as_str");  in main()
82     let rustc = env::var_os("RUSTC")?;  in compile_probe()  localVariable
87     // Make sure to pick up Cargo rustc configuration.  in compile_probe()
90         // The wrapper's first argument is supposed to be the path to rustc.  in compile_probe()
91         cmd.arg(rustc);  in compile_probe()
94         Command::new(rustc)  in compile_probe()
123     let rustc = env::var_os("RUSTC")?;  in rustc_minor_version()  localVariable
124     let output = Command::new(rustc).arg("--version").output().ok()?;  in rustc_minor_version()
127     if pieces.next() != Some("rustc 1") {  in rustc_minor_version()