Move to cargo clippy

Using clippy as a library has been deprecated, instead the `cargo
clippy` command should be used instead. To comply with this change
clippy has been removed from the `Cargo.toml` and is now installed with
cargo when building in CI.

This has also lead to a few new clippy issues to show up, this includes
everything in the `font` subdirectory. This has been fixed and `font`
should now be covered by clippy CI too.

This also upgrades all dependencies, as a result this fixes #1341 and
this fixes #1344.

6 files changed, 7 insertions, 15 deletions

diff --git a/src/config.rs b/src/config.rs
index 88a14b22..ed69ec5d 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1735,7 +1735,7 @@ mod tests {
     }
 }
 
-#[cfg_attr(feature = "clippy", allow(enum_variant_names))]
+#[cfg_attr(feature = "cargo-clippy", allow(enum_variant_names))]
 #[derive(Deserialize, Copy, Clone)]
 enum Key {
     Key1,
diff --git a/src/lib.rs b/src/lib.rs
index a8e18451..afbd8595 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -13,12 +13,7 @@
 // limitations under the License.
 //
 //! Alacritty - The GPU Enhanced Terminal
-#![cfg_attr(feature = "clippy", feature(plugin))]
-#![cfg_attr(feature = "clippy", plugin(clippy))]
-#![cfg_attr(feature = "clippy", deny(clippy))]
-#![cfg_attr(feature = "clippy", deny(enum_glob_use))]
-#![cfg_attr(feature = "clippy", deny(if_not_else))]
-#![cfg_attr(feature = "clippy", deny(wrong_pub_self_convention))]
+#![cfg_attr(feature = "cargo-clippy", deny(clippy, if_not_else, enum_glob_use, wrong_pub_self_convention))]
 #![cfg_attr(feature = "nightly", feature(core_intrinsics))]
 #![cfg_attr(all(test, feature = "bench"), feature(test))]
 
@@ -121,5 +116,6 @@ impl Mul<f32> for Rgb {
 #[allow(unused_mut)]
 pub mod gl {
     #![allow(non_upper_case_globals)]
+    #![cfg_attr(feature = "cargo-clippy", allow(clippy))]
     include!(concat!(env!("OUT_DIR"), "/gl_bindings.rs"));
 }
diff --git a/src/locale.rs b/src/locale.rs
index 9fcd2db2..bea68cad 100644
--- a/src/locale.rs
+++ b/src/locale.rs
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+#![cfg_attr(feature = "cargo-clippy", allow(let_unit_value))]
 #![cfg(target_os = "macos")]
 use libc::{LC_CTYPE, setlocale};
 use std::ffi::{CString, CStr};
diff --git a/src/logging.rs b/src/logging.rs
index 5691eb78..a691778a 100644
--- a/src/logging.rs
+++ b/src/logging.rs
@@ -29,7 +29,7 @@ pub struct Logger<T> {
 
 impl<T: Send + io::Write> Logger<T> {
     // False positive, see: https://github.com/rust-lang-nursery/rust-clippy/issues/734
-    #[cfg_attr(feature = "clippy", allow(new_ret_no_self))]
+    #[cfg_attr(feature = "cargo-clippy", allow(new_ret_no_self))]
     pub fn new(output: T, level: log::LevelFilter) -> Logger<io::LineWriter<T>> {
         log::set_max_level(level);
         Logger {
diff --git a/src/main.rs b/src/main.rs
index c45dfda5..b0e507e4 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -13,12 +13,7 @@
 // limitations under the License.
 //
 //! Alacritty - The GPU Enhanced Terminal
-#![cfg_attr(feature = "clippy", feature(plugin))]
-#![cfg_attr(feature = "clippy", plugin(clippy))]
-#![cfg_attr(feature = "clippy", deny(clippy))]
-#![cfg_attr(feature = "clippy", deny(enum_glob_use))]
-#![cfg_attr(feature = "clippy", deny(if_not_else))]
-#![cfg_attr(feature = "clippy", deny(wrong_pub_self_convention))]
+#![cfg_attr(feature = "cargo-clippy", deny(clippy, if_not_else, enum_glob_use, wrong_pub_self_convention))]
 #![cfg_attr(feature = "nightly", feature(core_intrinsics))]
 #![cfg_attr(all(test, feature = "bench"), feature(test))]
 
diff --git a/src/tty.rs b/src/tty.rs
index 166a788e..4da11c0e 100644
--- a/src/tty.rs
+++ b/src/tty.rs
@@ -117,7 +117,7 @@ fn set_controlling_terminal(fd: c_int) {
         // based on architecture (32/64). So a generic cast is used to make sure
         // there are no issues. To allow such a generic cast the clippy warning
         // is disabled.
-        #[cfg_attr(feature = "clippy", allow(cast_lossless))]
+        #[cfg_attr(feature = "cargo-clippy", allow(cast_lossless))]
         libc::ioctl(fd, TIOCSCTTY as _, 0)
     };