Fix warnings

Author: mati865

clippy_lints/src/misc_early.rs

@@ -371,8 +371,8 @@ impl MiscEarly {
                     let mut seen = (false, false);
                     for ch in src.chars() {
                         match ch {
-                            'a' ... 'f' => seen.0 = true,
-                            'A' ... 'F' => seen.1 = true,
+                            'a' ..= 'f' => seen.0 = true,
+                            'A' ..= 'F' => seen.1 = true,
                             'i' | 'u'   => break,   // start of suffix already
                             _ => ()
                         }

clippy_lints/src/non_copy_const.rs

@@ -5,7 +5,7 @@
 use rustc::lint::{LateContext, LateLintPass, Lint, LintArray, LintPass};
 use rustc::hir::*;
 use rustc::hir::def::Def;
-use rustc::ty::{self, TyRef, TypeFlags};
+use rustc::ty::{self, TypeFlags};
 use rustc::ty::adjustment::Adjust;
 use rustc_errors::Applicability;
 use rustc_typeck::hir_ty_to_ty;