The not
cfg-predicate was malformed.
Erroneous code example:
#[cfg(not())] // error: expected 1 cfg-pattern pub fn something() {} pub fn main() {}
The not
predicate expects one cfg-pattern. Example:
#[cfg(not(target_os = "linux"))] // ok! pub fn something() {} pub fn main() {}
For more information about the cfg attribute, read: https://doc.rust-lang.org/reference.html#conditional-compilation