Error on warnings when running clippy

It should simplify tracking of new warnings raised on CI builds
and when cross checking. This commit also enables warnings
for 'rust_2018_idioms' and 'future_incompatible'.

2 files changed, 3 insertions, 1 deletions

diff --git a/alacritty_terminal/src/ansi.rs b/alacritty_terminal/src/ansi.rs
index 5c2c9e57..877fd65f 100644
--- a/alacritty_terminal/src/ansi.rs
+++ b/alacritty_terminal/src/ansi.rs
@@ -1155,7 +1155,7 @@ where
     }
 }
 
-fn attrs_from_sgr_parameters(params: &mut ParamsIter) -> Vec<Option<Attr>> {
+fn attrs_from_sgr_parameters(params: &mut ParamsIter<'_>) -> Vec<Option<Attr>> {
     let mut attrs = Vec::with_capacity(params.size_hint().0);
 
     while let Some(param) = params.next() {
diff --git a/alacritty_terminal/src/lib.rs b/alacritty_terminal/src/lib.rs
index 2f3beeb0..abeba531 100644
--- a/alacritty_terminal/src/lib.rs
+++ b/alacritty_terminal/src/lib.rs
@@ -1,6 +1,8 @@
 //! Alacritty - The GPU Enhanced Terminal.
 
+#![warn(rust_2018_idioms, future_incompatible)]
 #![deny(clippy::all, clippy::if_not_else, clippy::enum_glob_use, clippy::wrong_pub_self_convention)]
+#![cfg_attr(feature = "cargo-clippy", deny(warnings))]
 #![cfg_attr(all(test, feature = "bench"), feature(test))]
 
 pub mod ansi;