[INFO] crate rustkell 0.2.2 is already in cache
[INFO] extracting crate rustkell 0.2.2 into work/ex/clippy-test-run/sources/stable/reg/rustkell/0.2.2
[INFO] extracting crate rustkell 0.2.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/rustkell/0.2.2
[INFO] validating manifest of rustkell-0.2.2 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 rustkell-0.2.2 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 rustkell-0.2.2
[INFO] finished frobbing rustkell-0.2.2
[INFO] frobbed toml for rustkell-0.2.2 written to work/ex/clippy-test-run/sources/stable/reg/rustkell/0.2.2/Cargo.toml
[INFO] started frobbing rustkell-0.2.2
[INFO] finished frobbing rustkell-0.2.2
[INFO] frobbed toml for rustkell-0.2.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/rustkell/0.2.2/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 rustkell-0.2.2 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/rustkell/0.2.2:/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] 44ec33090a46d5b66a140aa71275a314a6f5caebec377b56198b74e90a67d63a
[INFO] running `"docker" "start" "-a" "44ec33090a46d5b66a140aa71275a314a6f5caebec377b56198b74e90a67d63a"`
[INFO] [stderr]     Checking rustkell v0.2.2 (/opt/crater/workdir)
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/datalist/tails.rs:52:25
[INFO] [stderr]    |
[INFO] [stderr] 52 |             self.last = res.len() == 0;
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `res.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/datalist/tails.rs:90:25
[INFO] [stderr]    |
[INFO] [stderr] 90 |             self.last = res.len() == 0;
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `res.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: length comparison to zero
[INFO] [stderr]   --> src/datalist/tails.rs:52:25
[INFO] [stderr]    |
[INFO] [stderr] 52 |             self.last = res.len() == 0;
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `res.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/datalist/tails.rs:90:25
[INFO] [stderr]    |
[INFO] [stderr] 90 |             self.last = res.len() == 0;
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `res.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: identical conversion
[INFO] [stderr]   --> src/datalist/mod.rs:69:18
[INFO] [stderr]    |
[INFO] [stderr] 69 |     for (a,b) in (&v[..]).tails().into_iter().zip(b) {
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `(&v[..]).tails()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/datalist/mod.rs:85:18
[INFO] [stderr]    |
[INFO] [stderr] 85 |     for (a,b) in v.iter().tails().into_iter().zip(b) {
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `v.iter().tails()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/datalist/mod.rs:86:17
[INFO] [stderr]    |
[INFO] [stderr] 86 |         let a = a.into_iter().map(|x| *x).collect::<Vec<_>>();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `a.into_iter().cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/datalist/mod.rs:86:17
[INFO] [stderr]    |
[INFO] [stderr] 86 |         let a = a.into_iter().map(|x| *x).collect::<Vec<_>>();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `a`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/datalist/mod.rs:102:18
[INFO] [stderr]     |
[INFO] [stderr] 102 |     for (a,b) in v.tails().into_iter().zip(b) {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `v.tails()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/datalist/mod.rs:113:18
[INFO] [stderr]     |
[INFO] [stderr] 113 |     for (a,b) in (&v[..]).tails().into_iter().zip(b) {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `(&v[..]).tails()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/datalist/mod.rs:124:18
[INFO] [stderr]     |
[INFO] [stderr] 124 |     for (a,b) in v.tails().into_iter().zip(b) {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `v.tails()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/datalist/mod.rs:135:18
[INFO] [stderr]     |
[INFO] [stderr] 135 |     for (a,b) in v.iter().tails().into_iter().zip(b) {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `v.iter().tails()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> src/datalist/mod.rs:136:17
[INFO] [stderr]     |
[INFO] [stderr] 136 |         let a = a.into_iter().map(|x| *x).collect::<Vec<_>>();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `a.into_iter().cloned()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/datalist/mod.rs:136:17
[INFO] [stderr]     |
[INFO] [stderr] 136 |         let a = a.into_iter().map(|x| *x).collect::<Vec<_>>();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `a`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `"docker" "inspect" "44ec33090a46d5b66a140aa71275a314a6f5caebec377b56198b74e90a67d63a"`
[INFO] running `"docker" "rm" "-f" "44ec33090a46d5b66a140aa71275a314a6f5caebec377b56198b74e90a67d63a"`
[INFO] [stdout] 44ec33090a46d5b66a140aa71275a314a6f5caebec377b56198b74e90a67d63a