clippy 0.0.208

A bunch of helpful lints to avoid common pitfalls in Rust
#![feature(stmt_expr_attributes, tool_attributes)]

#![allow(unused_parens)]

fn main() {
    let x: i32 = 42;
    let _ = #[clippy::author] (x & 0b1111 == 0);  // suggest trailing_zeros
    let _ = x & 0b1_1111 == 0; // suggest trailing_zeros
    let _ = x & 0b1_1010 == 0; // do not lint
    let _ = x & 1 == 0; // do not lint
}