macro_rules! debug {
( $( $arg:tt )* ) => { ... };
}Expand description
Log a debugging message..
This is identical to invoking log!(log::Level::Debug, ...).
Debug messages are special. The are always emitted in debug builds, regardless of the requested log level. They are never captured by tests, and instead are always sent to the standard error. The idea being that debug messages are used for, well, debugging.