check

metrale_config::levers

Function check 

Source 
pub fn check<I, S>(names: I) -> Result<(), UndeclaredLevers>
where
    I: IntoIterator<Item = S>,
    S: AsRef<str>,
Expand description

2026-09-26: Refuse an environment carrying an undeclared METRALE_* name.

ยงErrors

UndeclaredLevers naming every such variable.