log::macros::warn![src]
macro_rules! warn( ($($arg:tt)*) => (log!(::log::WARN, $($arg)*)) )
A convenience macro for logging at the warning log level.
Example
#![feature(phase)] #[phase(plugin, link)] extern crate log; fn main() { let code = 3u; warn!("you may like to know that a process exited with: {}", code); }#![feature(phase)] #[phase(plugin, link)] extern crate log; warn!("you may like to know that a process exited with: {}", code);