How to view log messages

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When I have a temperature followed by a lower temperature in my config then I expect to get this message

amdgpud/src/config.rs

Lines 246 to 252 in 90e1dcd

	if matrix_point.speed < last_point.speed {
	log::error!(
	"Curve fan speeds should be monotonically increasing, found {} then {}",
	last_point.speed,
	matrix_point.speed
	);
	return Err(std::io::Error::from(ErrorKind::InvalidData));

but the log message never shows up. All I see is Error: Kind(InvalidData).

I do have log_level = "Error" in my config.toml.