[INFO] updating cached repository rust-lang-nursery/mdBook
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rust-lang-nursery/mdBook
[INFO] [stderr]  * branch                HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rust-lang-nursery/mdBook" "work/ex/clippy-test-run/sources/stable/gh/rust-lang-nursery/mdBook"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/rust-lang-nursery/mdBook'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rust-lang-nursery/mdBook" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/rust-lang-nursery/mdBook"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/rust-lang-nursery/mdBook'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1052ee92e12872f7422d230c1f5b888a3f74e1aa
[INFO] sha for GitHub repo rust-lang-nursery/mdBook: 1052ee92e12872f7422d230c1f5b888a3f74e1aa
[INFO] validating manifest of rust-lang-nursery/mdBook on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rust-lang-nursery/mdBook on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rust-lang-nursery/mdBook
[INFO] finished frobbing rust-lang-nursery/mdBook
[INFO] frobbed toml for rust-lang-nursery/mdBook written to work/ex/clippy-test-run/sources/stable/gh/rust-lang-nursery/mdBook/Cargo.toml
[INFO] started frobbing rust-lang-nursery/mdBook
[INFO] finished frobbing rust-lang-nursery/mdBook
[INFO] frobbed toml for rust-lang-nursery/mdBook written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/rust-lang-nursery/mdBook/Cargo.toml
[INFO] crate rust-lang-nursery/mdBook has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting rust-lang-nursery/mdBook against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/rust-lang-nursery/mdBook:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ec921b562c33b5b0c19530506c40690877783371e28cb5d62106d0aca2fac1da
[INFO] running `"docker" "start" "-a" "ec921b562c33b5b0c19530506c40690877783371e28cb5d62106d0aca2fac1da"`
[INFO] [stderr]    Compiling pulldown-cmark v0.1.2
[INFO] [stderr]     Checking strum v0.9.0
[INFO] [stderr]     Checking is-match v0.1.0
[INFO] [stderr]     Checking log v0.4.5
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.1
[INFO] [stderr]     Checking getopts v0.2.18
[INFO] [stderr]     Checking pretty_assertions v0.5.1
[INFO] [stderr]     Checking debug_unreachable v0.1.1
[INFO] [stderr]     Checking toml v0.4.8
[INFO] [stderr]    Compiling serde_json v1.0.32
[INFO] [stderr]    Compiling html5ever v0.18.0
[INFO] [stderr]    Compiling pest_derive v1.0.8
[INFO] [stderr]    Compiling syn v0.15.12
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking tokio-io v0.1.9
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking tendril v0.3.1
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking hyper v0.10.13
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]    Compiling string_cache v0.6.2
[INFO] [stderr]    Compiling mime_guess v1.8.6
[INFO] [stderr]    Compiling markup5ever v0.3.2
[INFO] [stderr]     Checking tokio-reactor v0.1.6
[INFO] [stderr]     Checking toml-query v0.7.0
[INFO] [stderr]     Checking handlebars v1.0.5
[INFO] [stderr]     Checking pulldown-cmark-to-cmark v1.1.0
[INFO] [stderr]    Compiling strum_macros v0.9.1
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking ws v0.7.9
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking string_cache v0.7.3
[INFO] [stderr]     Checking notify v4.0.6
[INFO] [stderr]     Checking iron v0.6.0
[INFO] [stderr]     Checking mount v0.4.0
[INFO] [stderr]     Checking staticfile v0.5.0
[INFO] [stderr]     Checking select v0.4.2
[INFO] [stderr]    Compiling markup5ever v0.7.3
[INFO] [stderr]     Checking elasticlunr-rs v2.3.3
[INFO] [stderr]     Checking html5ever v0.22.3
[INFO] [stderr]     Checking ammonia v1.2.0
[INFO] [stderr]     Checking mdbook v0.2.3-alpha.0 (/opt/crater/workdir)
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/book/mod.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | mod book;
[INFO] [stderr]   | ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::module_inception)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/book/mod.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | mod book;
[INFO] [stderr]   | ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::module_inception)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]    --> src/book/book.rs:304:23
[INFO] [stderr]     |
[INFO] [stderr] 304 |     const DUMMY_SRC: &'static str = "
[INFO] [stderr]     |                      -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::const_static_lifetime)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]    --> src/config.rs:563:28
[INFO] [stderr]     |
[INFO] [stderr] 563 |     const COMPLEX_CONFIG: &'static str = r#"
[INFO] [stderr]     |                           -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/book/book.rs:119:9
[INFO] [stderr]     |
[INFO] [stderr] 119 | /         if let &mut BookItem::Chapter(ref mut ch) = item {
[INFO] [stderr] 120 | |             for_each_mut(func, &mut ch.sub_items);
[INFO] [stderr] 121 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 119 |         if let BookItem::Chapter(ref mut ch) = *item {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: defining a method called `from_str` on this type; consider implementing the `std::str::FromStr` trait or choosing a less ambiguous name
[INFO] [stderr]   --> src/config.rs:80:5
[INFO] [stderr]    |
[INFO] [stderr] 80 | /     pub fn from_str(src: &str) -> Result<Config> {
[INFO] [stderr] 81 | |         toml::from_str(src).chain_err(|| Error::from("Invalid configuration file"))
[INFO] [stderr] 82 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::should_implement_trait)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#should_implement_trait
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `preprocess::index::IndexPreprocessor`
[INFO] [stderr]   --> src/preprocess/index.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | /     pub fn new() -> Self {
[INFO] [stderr] 18 | |         IndexPreprocessor
[INFO] [stderr] 19 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 11 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/preprocess/index.rs:48:51
[INFO] [stderr]    |
[INFO] [stderr] 48 |     let parent_dir = index_path.as_ref().parent().unwrap_or(index_path.as_ref());
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| index_path.as_ref())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `preprocess::links::LinkPreprocessor`
[INFO] [stderr]   --> src/preprocess/links.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | /     pub fn new() -> Self {
[INFO] [stderr] 23 | |         LinkPreprocessor
[INFO] [stderr] 24 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 16 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/preprocess/links.rs:151:21
[INFO] [stderr]     |
[INFO] [stderr] 151 | /                     Range {
[INFO] [stderr] 152 | |                         start,
[INFO] [stderr] 153 | |                         end: start + 1,
[INFO] [stderr] 154 | |                     },
[INFO] [stderr]     | |_____________________^ help: use: `start..=start`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]   --> src/renderer/html_handlebars/helpers/theme.rs:15:10
[INFO] [stderr]    |
[INFO] [stderr] 15 |           .ok_or(RenderError::new(
[INFO] [stderr]    |  __________^
[INFO] [stderr] 16 | |             "Param 0 with String type is required for theme_option helper.",
[INFO] [stderr] 17 | |         ))?;
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 15 |         .ok_or_else(|| RenderError::new(
[INFO] [stderr] 16 |             "Param 0 with String type is required for theme_option helper.",
[INFO] [stderr] 17 |         ))?;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this lifetime isn't used in the function definition
[INFO] [stderr]   --> src/renderer/html_handlebars/helpers/toc.rs:17:24
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn call<'reg: 'rc, 'rc>(
[INFO] [stderr]    |                        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::extra_unused_lifetimes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: this lifetime isn't used in the function definition
[INFO] [stderr]   --> src/renderer/html_handlebars/helpers/toc.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn call<'reg: 'rc, 'rc>(
[INFO] [stderr]    |             ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/renderer/html_handlebars/search.rs:94:29
[INFO] [stderr]    |
[INFO] [stderr] 94 |     let max_section_depth = search_config.heading_split_level as i32;
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `i32::from(search_config.heading_split_level)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]   --> src/utils/mod.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | / pub fn collapse_whitespace<'a>(text: &'a str) -> Cow<'a, str> {
[INFO] [stderr] 18 | |     lazy_static! {
[INFO] [stderr] 19 | |         static ref RE: Regex = Regex::new(r"\s\s+").unwrap();
[INFO] [stderr] 20 | |     }
[INFO] [stderr] 21 | |     RE.replace_all(text, " ")
[INFO] [stderr] 22 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_lifetimes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/book/book.rs:119:9
[INFO] [stderr]     |
[INFO] [stderr] 119 | /         if let &mut BookItem::Chapter(ref mut ch) = item {
[INFO] [stderr] 120 | |             for_each_mut(func, &mut ch.sub_items);
[INFO] [stderr] 121 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 119 |         if let BookItem::Chapter(ref mut ch) = *item {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]    --> src/book/book.rs:318:9
[INFO] [stderr]     |
[INFO] [stderr] 318 | /         File::create(&chapter_path)
[INFO] [stderr] 319 | |             .unwrap()
[INFO] [stderr] 320 | |             .write(DUMMY_SRC.as_bytes())
[INFO] [stderr] 321 | |             .unwrap();
[INFO] [stderr]     | |_____________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::unused_io_amount)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] warning: calling `as_bytes()` on a string literal
[INFO] [stderr]    --> src/book/book.rs:336:24
[INFO] [stderr]     |
[INFO] [stderr] 336 |             .write_all("Hello World!".as_bytes())
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using a byte string literal instead: `b"Hello World!"`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::string_lit_as_bytes)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#string_lit_as_bytes
[INFO] [stderr] 
[INFO] [stderr] warning: defining a method called `from_str` on this type; consider implementing the `std::str::FromStr` trait or choosing a less ambiguous name
[INFO] [stderr]   --> src/config.rs:80:5
[INFO] [stderr]    |
[INFO] [stderr] 80 | /     pub fn from_str(src: &str) -> Result<Config> {
[INFO] [stderr] 81 | |         toml::from_str(src).chain_err(|| Error::from("Invalid configuration file"))
[INFO] [stderr] 82 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::should_implement_trait)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#should_implement_trait
[INFO] [stderr] 
[INFO] [stderr] warning: struct update has no effect, all the fields in the struct have already been specified
[INFO] [stderr]    --> src/config.rs:604:15
[INFO] [stderr]     |
[INFO] [stderr] 604 |             ..Default::default()
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_update)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_update
[INFO] [stderr] 
[INFO] [stderr] warning: use of a blacklisted/placeholder name `baz`
[INFO] [stderr]    --> src/config.rs:661:13
[INFO] [stderr]     |
[INFO] [stderr] 661 |         let baz: Vec<bool> = cfg.get_deserialized("output.random.baz").unwrap();
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::blacklisted_name)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#blacklisted_name
[INFO] [stderr] 
[INFO] [stderr] error: approximate value of `f{32, 64}::consts::PI` found. Consider using it directly
[INFO] [stderr]    --> src/config.rs:789:58
[INFO] [stderr]     |
[INFO] [stderr] 789 |         let value = json!({"array": [1, 2, 3], "number": 3.14});
[INFO] [stderr]     |                                                          ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::approx_constant)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#approx_constant
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `preprocess::index::IndexPreprocessor`
[INFO] [stderr]   --> src/preprocess/index.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | /     pub fn new() -> Self {
[INFO] [stderr] 18 | |         IndexPreprocessor
[INFO] [stderr] 19 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 11 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/preprocess/index.rs:48:51
[INFO] [stderr]    |
[INFO] [stderr] 48 |     let parent_dir = index_path.as_ref().parent().unwrap_or(index_path.as_ref());
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| index_path.as_ref())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `preprocess::links::LinkPreprocessor`
[INFO] [stderr]   --> src/preprocess/links.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | /     pub fn new() -> Self {
[INFO] [stderr] 23 | |         LinkPreprocessor
[INFO] [stderr] 24 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 16 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/preprocess/links.rs:151:21
[INFO] [stderr]     |
[INFO] [stderr] 151 | /                     Range {
[INFO] [stderr] 152 | |                         start,
[INFO] [stderr] 153 | |                         end: start + 1,
[INFO] [stderr] 154 | |                     },
[INFO] [stderr]     | |_____________________^ help: use: `start..=start`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]   --> src/renderer/html_handlebars/helpers/theme.rs:15:10
[INFO] [stderr]    |
[INFO] [stderr] 15 |           .ok_or(RenderError::new(
[INFO] [stderr]    |  __________^
[INFO] [stderr] 16 | |             "Param 0 with String type is required for theme_option helper.",
[INFO] [stderr] 17 | |         ))?;
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 15 |         .ok_or_else(|| RenderError::new(
[INFO] [stderr] 16 |             "Param 0 with String type is required for theme_option helper.",
[INFO] [stderr] 17 |         ))?;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this lifetime isn't used in the function definition
[INFO] [stderr]   --> src/renderer/html_handlebars/helpers/toc.rs:17:24
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn call<'reg: 'rc, 'rc>(
[INFO] [stderr]    |                        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::extra_unused_lifetimes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: this lifetime isn't used in the function definition
[INFO] [stderr]   --> src/renderer/html_handlebars/helpers/toc.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn call<'reg: 'rc, 'rc>(
[INFO] [stderr]    |             ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/renderer/html_handlebars/search.rs:94:29
[INFO] [stderr]    |
[INFO] [stderr] 94 |     let max_section_depth = search_config.heading_split_level as i32;
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `i32::from(search_config.heading_split_level)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/utils/fs.rs:199:13
[INFO] [stderr]     |
[INFO] [stderr] 199 |             Err(_) => panic!("Could not create a temp dir"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::match_wild_err_arm)] on by default
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_err()`
[INFO] [stderr]    --> src/utils/fs.rs:203:16
[INFO] [stderr]     |
[INFO] [stderr] 203 |           if let Err(_) = fs::File::create(&tmp.path().join("file.txt")) {
[INFO] [stderr]     |  _________-      ^^^^^^
[INFO] [stderr] 204 | |             panic!("Could not create file.txt")
[INFO] [stderr] 205 | |         }
[INFO] [stderr]     | |_________- help: try this: `if fs::File::create(&tmp.path().join("file.txt")).is_err()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_err()`
[INFO] [stderr]    --> src/utils/fs.rs:206:16
[INFO] [stderr]     |
[INFO] [stderr] 206 |           if let Err(_) = fs::File::create(&tmp.path().join("file.md")) {
[INFO] [stderr]     |  _________-      ^^^^^^
[INFO] [stderr] 207 | |             panic!("Could not create file.md")
[INFO] [stderr] 208 | |         }
[INFO] [stderr]     | |_________- help: try this: `if fs::File::create(&tmp.path().join("file.md")).is_err()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_err()`
[INFO] [stderr]    --> src/utils/fs.rs:209:16
[INFO] [stderr]     |
[INFO] [stderr] 209 |           if let Err(_) = fs::File::create(&tmp.path().join("file.png")) {
[INFO] [stderr]     |  _________-      ^^^^^^
[INFO] [stderr] 210 | |             panic!("Could not create file.png")
[INFO] [stderr] 211 | |         }
[INFO] [stderr]     | |_________- help: try this: `if fs::File::create(&tmp.path().join("file.png")).is_err()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_err()`
[INFO] [stderr]    --> src/utils/fs.rs:212:16
[INFO] [stderr]     |
[INFO] [stderr] 212 |           if let Err(_) = fs::create_dir(&tmp.path().join("sub_dir")) {
[INFO] [stderr]     |  _________-      ^^^^^^
[INFO] [stderr] 213 | |             panic!("Could not create sub_dir")
[INFO] [stderr] 214 | |         }
[INFO] [stderr]     | |_________- help: try this: `if fs::create_dir(&tmp.path().join("sub_dir")).is_err()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_err()`
[INFO] [stderr]    --> src/utils/fs.rs:215:16
[INFO] [stderr]     |
[INFO] [stderr] 215 |           if let Err(_) = fs::File::create(&tmp.path().join("sub_dir/file.png")) {
[INFO] [stderr]     |  _________-      ^^^^^^
[INFO] [stderr] 216 | |             panic!("Could not create sub_dir/file.png")
[INFO] [stderr] 217 | |         }
[INFO] [stderr]     | |_________- help: try this: `if fs::File::create(&tmp.path().join("sub_dir/file.png")).is_err()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_err()`
[INFO] [stderr]    --> src/utils/fs.rs:218:16
[INFO] [stderr]     |
[INFO] [stderr] 218 |           if let Err(_) = fs::create_dir(&tmp.path().join("sub_dir_exists")) {
[INFO] [stderr]     |  _________-      ^^^^^^
[INFO] [stderr] 219 | |             panic!("Could not create sub_dir_exists")
[INFO] [stderr] 220 | |         }
[INFO] [stderr]     | |_________- help: try this: `if fs::create_dir(&tmp.path().join("sub_dir_exists")).is_err()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_err()`
[INFO] [stderr]    --> src/utils/fs.rs:221:16
[INFO] [stderr]     |
[INFO] [stderr] 221 |           if let Err(_) = fs::File::create(&tmp.path().join("sub_dir_exists/file.txt")) {
[INFO] [stderr]     |  _________-      ^^^^^^
[INFO] [stderr] 222 | |             panic!("Could not create sub_dir_exists/file.txt")
[INFO] [stderr] 223 | |         }
[INFO] [stderr]     | |_________- help: try this: `if fs::File::create(&tmp.path().join("sub_dir_exists/file.txt")).is_err()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_err()`
[INFO] [stderr]    --> src/utils/fs.rs:226:16
[INFO] [stderr]     |
[INFO] [stderr] 226 |           if let Err(_) = fs::create_dir(&tmp.path().join("output")) {
[INFO] [stderr]     |  _________-      ^^^^^^
[INFO] [stderr] 227 | |             panic!("Could not create output")
[INFO] [stderr] 228 | |         }
[INFO] [stderr]     | |_________- help: try this: `if fs::create_dir(&tmp.path().join("output")).is_err()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_err()`
[INFO] [stderr]    --> src/utils/fs.rs:229:16
[INFO] [stderr]     |
[INFO] [stderr] 229 |           if let Err(_) = fs::create_dir(&tmp.path().join("output/sub_dir_exists")) {
[INFO] [stderr]     |  _________-      ^^^^^^
[INFO] [stderr] 230 | |             panic!("Could not create output/sub_dir_exists")
[INFO] [stderr] 231 | |         }
[INFO] [stderr]     | |_________- help: try this: `if fs::create_dir(&tmp.path().join("output/sub_dir_exists")).is_err()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/utils/fs.rs:233:9
[INFO] [stderr]     |
[INFO] [stderr] 233 | /         match copy_files_except_ext(&tmp.path(), &tmp.path().join("output"), true, &["md"]) {
[INFO] [stderr] 234 | |             Err(e) => panic!("Error while executing the function:\n{:?}", e),
[INFO] [stderr] 235 | |             Ok(_) => {}
[INFO] [stderr] 236 | |         }
[INFO] [stderr]     | |_________^ help: try this: `if let Err(e) = copy_files_except_ext(&tmp.path(), &tmp.path().join("output"), true, &["md"]) { panic!("Error while executing the function:\n{:?}", e) }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]   --> src/utils/mod.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | / pub fn collapse_whitespace<'a>(text: &'a str) -> Cow<'a, str> {
[INFO] [stderr] 18 | |     lazy_static! {
[INFO] [stderr] 19 | |         static ref RE: Regex = Regex::new(r"\s\s+").unwrap();
[INFO] [stderr] 20 | |     }
[INFO] [stderr] 21 | |     RE.replace_all(text, " ")
[INFO] [stderr] 22 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_lifetimes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `mdbook`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]   --> examples/nop-preprocessor.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 31 |       } else {
[INFO] [stderr]    |  ____________^
[INFO] [stderr] 32 | |         if let Err(e) = handle_preprocessing(&preprocessor) {
[INFO] [stderr] 33 | |             eprintln!("{}", e);
[INFO] [stderr] 34 | |             process::exit(1);
[INFO] [stderr] 35 | |         }
[INFO] [stderr] 36 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 31 |     } else if let Err(e) = handle_preprocessing(&preprocessor) {
[INFO] [stderr] 32 |     eprintln!("{}", e);
[INFO] [stderr] 33 |     process::exit(1);
[INFO] [stderr] 34 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "ec921b562c33b5b0c19530506c40690877783371e28cb5d62106d0aca2fac1da"`
[INFO] running `"docker" "rm" "-f" "ec921b562c33b5b0c19530506c40690877783371e28cb5d62106d0aca2fac1da"`
[INFO] [stdout] ec921b562c33b5b0c19530506c40690877783371e28cb5d62106d0aca2fac1da