10 pub struct Rustc {  struct
11     rustc: PathBuf,  field
16 impl Rustc {  impl
18         Rustc {  in new()
19             rustc: env::var_os("RUSTC")  in new()
20                 .unwrap_or_else(|| "rustc".into())  in new()
29         let mut rustc = self  in command()  localVariable
33             .chain(Some(&self.rustc));  in command()
34         let mut command = Command::new(rustc.next().unwrap());  in command()
35         for arg in rustc {  in command()
41     /// Try to get the `rustc` version.
53         let rustc = &self.rustc;  in version()  localVariable
56                 try_version!(Command::new(rw).args(&[rww, rustc]));  in version()
58             try_version!(Command::new(rw).arg(rustc));  in version()
61             try_version!(Command::new(rww).arg(rustc));  in version()
63         Version::from_command(&mut Command::new(rustc))  in version()