[INFO] crate mdbook-presentation-preprocessor 0.2.0 is already in cache
[INFO] extracting crate mdbook-presentation-preprocessor 0.2.0 into work/ex/clippy-test-run/sources/stable/reg/mdbook-presentation-preprocessor/0.2.0
[INFO] extracting crate mdbook-presentation-preprocessor 0.2.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/mdbook-presentation-preprocessor/0.2.0
[INFO] validating manifest of mdbook-presentation-preprocessor-0.2.0 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 mdbook-presentation-preprocessor-0.2.0 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 mdbook-presentation-preprocessor-0.2.0
[INFO] finished frobbing mdbook-presentation-preprocessor-0.2.0
[INFO] frobbed toml for mdbook-presentation-preprocessor-0.2.0 written to work/ex/clippy-test-run/sources/stable/reg/mdbook-presentation-preprocessor/0.2.0/Cargo.toml
[INFO] started frobbing mdbook-presentation-preprocessor-0.2.0
[INFO] finished frobbing mdbook-presentation-preprocessor-0.2.0
[INFO] frobbed toml for mdbook-presentation-preprocessor-0.2.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/mdbook-presentation-preprocessor/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 mdbook-presentation-preprocessor-0.2.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/mdbook-presentation-preprocessor/0.2.0:/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] 72ea25ace6bfac29aff5524f09adf58d676fdd9ea8978d869bde71bd17c73f78
[INFO] running `"docker" "start" "-a" "72ea25ace6bfac29aff5524f09adf58d676fdd9ea8978d869bde71bd17c73f78"`
[INFO] [stderr]     Checking is-match v0.1.0
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling strum_macros v0.11.0
[INFO] [stderr]     Checking docopt v1.0.2
[INFO] [stderr]     Checking ws v0.7.9
[INFO] [stderr]     Checking mount v0.4.0
[INFO] [stderr]     Checking html5ever v0.22.5
[INFO] [stderr]     Checking toml-query v0.7.0
[INFO] [stderr]     Checking staticfile v0.5.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking ammonia v1.2.0
[INFO] [stderr]     Checking elasticlunr-rs v2.3.4
[INFO] [stderr]     Checking handlebars v1.1.0
[INFO] [stderr]     Checking mdbook v0.2.3
[INFO] [stderr]     Checking mdbook-presentation-preprocessor v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/main.rs:118:5
[INFO] [stderr]     |
[INFO] [stderr] 118 |     ret
[INFO] [stderr]     |     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/main.rs:117:15
[INFO] [stderr]     |
[INFO] [stderr] 117 |     let ret = ret.replace(&end_tag, &end_comment);
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/main.rs:118:5
[INFO] [stderr]     |
[INFO] [stderr] 118 |     ret
[INFO] [stderr]     |     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/main.rs:117:15
[INFO] [stderr]     |
[INFO] [stderr] 117 |     let ret = ret.replace(&end_tag, &end_comment);
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.66s
[INFO] running `"docker" "inspect" "72ea25ace6bfac29aff5524f09adf58d676fdd9ea8978d869bde71bd17c73f78"`
[INFO] running `"docker" "rm" "-f" "72ea25ace6bfac29aff5524f09adf58d676fdd9ea8978d869bde71bd17c73f78"`
[INFO] [stdout] 72ea25ace6bfac29aff5524f09adf58d676fdd9ea8978d869bde71bd17c73f78