Macro error

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

Logs a message of formatted args at error severity

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

Examples

Basic use:

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

Use with metadata:

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