[INFO] crate wasm-bindgen-test-project-builder 0.2.15 is already in cache
[INFO] extracting crate wasm-bindgen-test-project-builder 0.2.15 into work/ex/clippy-test-run/sources/stable/reg/wasm-bindgen-test-project-builder/0.2.15
[INFO] extracting crate wasm-bindgen-test-project-builder 0.2.15 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/wasm-bindgen-test-project-builder/0.2.15
[INFO] validating manifest of wasm-bindgen-test-project-builder-0.2.15 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 wasm-bindgen-test-project-builder-0.2.15 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 wasm-bindgen-test-project-builder-0.2.15
[INFO] finished frobbing wasm-bindgen-test-project-builder-0.2.15
[INFO] frobbed toml for wasm-bindgen-test-project-builder-0.2.15 written to work/ex/clippy-test-run/sources/stable/reg/wasm-bindgen-test-project-builder/0.2.15/Cargo.toml
[INFO] started frobbing wasm-bindgen-test-project-builder-0.2.15
[INFO] finished frobbing wasm-bindgen-test-project-builder-0.2.15
[INFO] frobbed toml for wasm-bindgen-test-project-builder-0.2.15 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/wasm-bindgen-test-project-builder/0.2.15/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 wasm-bindgen-test-project-builder-0.2.15 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-1/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/wasm-bindgen-test-project-builder/0.2.15:/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] 9897fb4f22a50978530c2d935093759a9903165beb10acce1cc5d4801f5ede11
[INFO] running `"docker" "start" "-a" "9897fb4f22a50978530c2d935093759a9903165beb10acce1cc5d4801f5ede11"`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.15
[INFO] [stderr]     Checking nan-preserving-float v0.1.0
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]     Checking parity-wasm v0.31.3
[INFO] [stderr]     Checking parity-wasm v0.32.0
[INFO] [stderr]     Checking tempfile v3.0.5
[INFO] [stderr]     Checking wasmi v0.3.0
[INFO] [stderr]     Checking wasm-gc-api v0.1.11
[INFO] [stderr]     Checking wasm-bindgen-cli-support v0.2.15
[INFO] [stderr]     Checking wasm-bindgen-test-project-builder v0.2.15 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     return me;
[INFO] [stderr]    |     ^^^^^^^^^^ help: remove `return` as shown: `me`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:95:14
[INFO] [stderr]    |
[INFO] [stderr] 95 |         1 => return None,
[INFO] [stderr]    |              ^^^^^^^^^^^ help: remove `return` as shown: `None`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:96:14
[INFO] [stderr]    |
[INFO] [stderr] 96 |         2 => return Some("--harmony-bigint"),
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Some("--harmony-bigint")`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'failure::error::Error::causes': please use the 'iter_chain()' method instead
[INFO] [stderr]    --> src/lib.rs:599:24
[INFO] [stderr]     |
[INFO] [stderr] 599 |             for e in e.causes() {
[INFO] [stderr]     |                        ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/lib.rs:277:30
[INFO] [stderr]     |
[INFO] [stderr] 277 |         let mut extensions = format!("'.js', '.wasm'");
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"'.js', '.wasm'".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: Calling `subsec_millis()` is more concise than this calculation
[INFO] [stderr]    --> src/lib.rs:771:13
[INFO] [stderr]     |
[INFO] [stderr] 771 |             dur.subsec_nanos() / 1_000_000
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `dur.subsec_millis()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::duration_subsec)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#duration_subsec
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/lib.rs:783:8
[INFO] [stderr]     |
[INFO] [stderr] 783 |     if output.stdout.len() > 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!output.stdout.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/lib.rs:786:8
[INFO] [stderr]     |
[INFO] [stderr] 786 |     if output.stderr.len() > 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!output.stderr.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]    --> src/lib.rs:837:33
[INFO] [stderr]     |
[INFO] [stderr] 837 |     let mut child = cmd.spawn().expect(&format!("should spawn {} OK", name));
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("should spawn {} OK", name))`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     return me;
[INFO] [stderr]    |     ^^^^^^^^^^ help: remove `return` as shown: `me`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:95:14
[INFO] [stderr]    |
[INFO] [stderr] 95 |         1 => return None,
[INFO] [stderr]    |              ^^^^^^^^^^^ help: remove `return` as shown: `None`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:96:14
[INFO] [stderr]    |
[INFO] [stderr] 96 |         2 => return Some("--harmony-bigint"),
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Some("--harmony-bigint")`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'failure::error::Error::causes': please use the 'iter_chain()' method instead
[INFO] [stderr]    --> src/lib.rs:599:24
[INFO] [stderr]     |
[INFO] [stderr] 599 |             for e in e.causes() {
[INFO] [stderr]     |                        ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/lib.rs:277:30
[INFO] [stderr]     |
[INFO] [stderr] 277 |         let mut extensions = format!("'.js', '.wasm'");
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"'.js', '.wasm'".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: Calling `subsec_millis()` is more concise than this calculation
[INFO] [stderr]    --> src/lib.rs:771:13
[INFO] [stderr]     |
[INFO] [stderr] 771 |             dur.subsec_nanos() / 1_000_000
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `dur.subsec_millis()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::duration_subsec)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#duration_subsec
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/lib.rs:783:8
[INFO] [stderr]     |
[INFO] [stderr] 783 |     if output.stdout.len() > 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!output.stdout.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/lib.rs:786:8
[INFO] [stderr]     |
[INFO] [stderr] 786 |     if output.stderr.len() > 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!output.stderr.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]    --> src/lib.rs:837:33
[INFO] [stderr]     |
[INFO] [stderr] 837 |     let mut child = cmd.spawn().expect(&format!("should spawn {} OK", name));
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("should spawn {} OK", name))`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.25s
[INFO] running `"docker" "inspect" "9897fb4f22a50978530c2d935093759a9903165beb10acce1cc5d4801f5ede11"`
[INFO] running `"docker" "rm" "-f" "9897fb4f22a50978530c2d935093759a9903165beb10acce1cc5d4801f5ede11"`
[INFO] [stdout] 9897fb4f22a50978530c2d935093759a9903165beb10acce1cc5d4801f5ede11