Merge pull request #702 from lzutao/use-docs

Re-add rust-docs component for lintcheck

.travis.yml

@@ -1,7 +1,8 @@
-language: rust
+language: shell
 
-rust:
-  - nightly
+before_install:
+  - curl -sSL https://sh.rustup.rs | sh -s -- -y --default-toolchain=nightly --profile=minimal -c rust-docs
+  - export PATH="$HOME/.cargo/bin:$PATH"
 
 install:
   - travis_retry curl -Lf https://github.com/rust-lang-nursery/mdBook/releases/download/v0.3.1/mdbook-v0.3.1-x86_64-unknown-linux-gnu.tar.gz | tar -xz --directory=$HOME/.cargo/bin

src/items/generics.md

@@ -92,10 +92,11 @@ attributes may give meaning to it.
 This example shows using a custom derive attribute to modify the meaning of a
 generic parameter.
 
-```ignore
+```rust,ignore
 // Assume that the derive for MyFlexibleClone declared `my_flexible_clone` as
 // an attribute it understands.
-#[derive(MyFlexibleClone)] struct Foo<#[my_flexible_clone(unbounded)] H> {
+#[derive(MyFlexibleClone)]
+struct Foo<#[my_flexible_clone(unbounded)] H> {
     a: *const H
 }
 ```