Merge pull request #1420 from matthiaskrgr/clippy_3

fix clippy warnings

Author: Xanewok

rls-rustc/src/lib.rs

@@ -19,7 +19,7 @@ use std::env;
 use std::process;
 
 pub fn run() {
-    drop(env_logger::init());
+    env_logger::init();
     let result = rustc_driver::report_ices_to_stderr_if_any(|| {
         let args = env::args_os()
             .enumerate()

rls/src/lib.rs

@@ -7,7 +7,7 @@
 
 #![feature(rustc_private, drain_filter)]
 #![warn(clippy::all, rust_2018_idioms)]
-#![allow(clippy::cyclomatic_complexity, clippy::too_many_arguments, clippy::redundant_closure)]
+#![allow(clippy::cognitive_complexity, clippy::too_many_arguments, clippy::redundant_closure)]
 
 #[macro_use]
 extern crate failure;