A lint check attribute was overruled by a forbid directive set as an
attribute on an enclosing scope, or on the command line with the -F option.
Example of erroneous code:
#![forbid(non_snake_case)]
#[allow(non_snake_case)]
fn main() {
let MyNumber = 2; // error: allow(non_snake_case) overruled by outer
// forbid(non_snake_case)
}The forbid lint setting, like deny, turns the corresponding compiler
warning into a hard error. Unlike deny, forbid prevents itself from being
overridden by inner attributes.
If you’re sure you want to override the lint check, you can change forbid to
deny (or use -D instead of -F if the forbid setting was given as a
command-line option) to allow the inner lint check attribute:
#![deny(non_snake_case)]
#[allow(non_snake_case)]
fn main() {
let MyNumber = 2; // ok!
}Otherwise, edit the code to pass the lint check, and remove the overruled attribute:
#![forbid(non_snake_case)]
fn main() {
let my_number = 2;
}