Move warnings to Cargo.toml

src/main.rs

@@ -1,20 +1,3 @@
-#![deny(unsafe_code)]
-// Rustc lint groups
-#![warn(future_incompatible)]
-#![warn(rust_2018_idioms)]
-// Rustc lints
-#![warn(noop_method_call)]
-#![warn(single_use_lifetimes)]
-#![warn(trivial_numeric_casts)]
-#![warn(unused_crate_dependencies)]
-#![warn(unused_extern_crates)]
-#![warn(unused_import_braces)]
-#![warn(unused_lifetimes)]
-#![warn(unused_qualifications)]
-// Clippy lints
-#![warn(clippy::all)]
-#![warn(clippy::use_self)]
-
 mod cli;
 mod error;
 mod eval;