rust/src/librustc_error_codes/error_codes/E0087.md

Note: this error code is no longer emitted by the compiler.

Too many type arguments were supplied for a function. For example:

fn foo<T>() {}

fn main() {
    foo::<f64, bool>(); // error: wrong number of type arguments:
                        //        expected 1, found 2
}

The number of supplied arguments must exactly match the number of defined type parameters.