Update clippy

Author: sgrif

.travis.yml

@@ -17,7 +17,7 @@ before_install:
 install:
   - pip install 'travis-cargo<0.2' --user && export PATH=$HOME/.local/bin:$PATH
   - yarn install
-  - cargo install --force diesel_cli --vers 0.13.0 --debug --no-default-features --features postgres && export PATH=$HOME/.cargo/bin:$PATH
+  - cargo install --force diesel_cli --vers 0.14.0 --debug --no-default-features --features postgres && export PATH=$HOME/.cargo/bin:$PATH
   - cargo install --force rustfmt
   - rustfmt --version
 
@@ -49,7 +49,7 @@ matrix:
     - cargo build
     - cargo test
     - yarn test
-  - rust: nightly-2017-03-04
+  - rust: nightly-2017-07-04
     env: CLIPPY=YESPLEASE
     script:
     - cargo rustc --lib --features "lint" -- -Zno-trans

Cargo.lock

@@ -47,7 +47,7 @@ diesel_full_text_search = "0.13.0"
 serde_json = "1.0.0"
 serde_derive = "1.0.0"
 serde = "1.0.0"
-clippy = { version = "=0.0.118", optional = true }
+clippy = { version = "=0.0.142", optional = true }
 chrono = "0.3.0"
 
 conduit = "0.8"

Cargo.toml

@@ -15,10 +15,16 @@ pub struct LazyCell<T> {
     inner: RefCell<Option<T>>,
 }
 
+impl<T> Default for LazyCell<T> {
+    fn default() -> Self {
+        LazyCell { inner: RefCell::new(None) }
+    }
+}
+
 impl<T> LazyCell<T> {
     /// Creates a new empty lazy cell.
     pub fn new() -> LazyCell<T> {
-        LazyCell { inner: RefCell::new(None) }
+        LazyCell::default()
     }
 
     /// Put a value into this cell.