Bump clippy version and rust nightly to 2017-10-09

.travis.yml

@@ -7,11 +7,11 @@ rust:
 - nightly
 matrix:
   include:
-  - rust: nightly-2017-03-15
+  - rust: nightly-2017-10-09
     env: CLIPPY=YESPLEASE
     script: |
-        cargo +nightly-2017-03-15 install clippy --vers "0.0.120"
-        cargo +nightly-2017-03-15 clippy
+        cargo +nightly-2017-10-09 install clippy --vers "0.0.165"
+        cargo +nightly-2017-10-09 clippy -- -D warnings
 before_script:
 - |
   pip install 'travis-cargo<0.2' --user &&

src/assert.rs

@@ -341,6 +341,8 @@ impl OutputAssertionBuilder {
     ///     .stdout().not().contains("73")
     ///     .unwrap();
     /// ```
+    // No clippy, we don't want to implement std::ops::Not :)
+    #[cfg_attr(feature = "cargo-clippy", allow(should_implement_trait))]
     pub fn not(mut self) -> Self {
         self.expected_result = ! self.expected_result;
         self

src/output.rs

@@ -65,7 +65,7 @@ pub enum OutputKind {
 }
 
 impl OutputKind {
-    pub fn select<'a>(self, o: &'a Output) -> &'a [u8] {
+    pub fn select(self, o: &Output) -> &[u8] {
         match self {
             OutputKind::StdOut => &o.stdout,
             OutputKind::StdErr => &o.stderr,