More than one function was declared with the #[main]
attribute.
Erroneous code example:
#![feature(main)] #[main] fn foo() {} #[main] fn f() {} // error: multiple functions with a `#[main]` attribute
This error indicates that the compiler found multiple functions with the #[main]
attribute. This is an error because there must be a unique entry point into a Rust program. Example:
#![feature(main)] #[main] fn f() {} // ok!