Macro critical

macro_rules! critical {
    ($log:expr, $($arg:tt)*) => { ... };
    ($log:expr => $md:expr, $($arg:tt)*) => { ... };
}

Logs a message of formatted args at critical severity

This is a convenience function that just wraps Logger::log with a specified Critical log severity

Examples

Basic use:

log::critical!(logger, "Hello {}!", "world");

Use with metadata:

log::critical!(logger => log::NoMeta, "Hello {}!", "world");