Error code E0805
An attribute was given an invalid number of arguments
Erroneous code example:
#![allow(unused)] fn main() { #[inline()] // error! should either have a single argument, or no parentheses fn foo() {} #[inline(always, never)] // error! should have only one argument, not two fn bar() {} }
To fix this, either give the right number of arguments the attribute needs. In the case of inline, this could be none at all:
#![allow(unused)] fn main() { #[inline] fn foo() {} }
or only one:
#![allow(unused)] fn main() { #[inline(always)] fn foo() {} }