[INFO] updating cached repository lbrande/kosaraju
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lbrande/kosaraju
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lbrande/kosaraju" "work/ex/clippy-test-run/sources/stable/gh/lbrande/kosaraju"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/lbrande/kosaraju'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lbrande/kosaraju" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/lbrande/kosaraju"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/lbrande/kosaraju'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f98bff614547df7931795460016e2dad612a0154
[INFO] sha for GitHub repo lbrande/kosaraju: f98bff614547df7931795460016e2dad612a0154
[INFO] validating manifest of lbrande/kosaraju 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 lbrande/kosaraju 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 lbrande/kosaraju
[INFO] finished frobbing lbrande/kosaraju
[INFO] frobbed toml for lbrande/kosaraju written to work/ex/clippy-test-run/sources/stable/gh/lbrande/kosaraju/Cargo.toml
[INFO] started frobbing lbrande/kosaraju
[INFO] finished frobbing lbrande/kosaraju
[INFO] frobbed toml for lbrande/kosaraju written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/lbrande/kosaraju/Cargo.toml
[INFO] crate lbrande/kosaraju 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 lbrande/kosaraju against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/lbrande/kosaraju:/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 -Dclippy::into_iter_on_array" "-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] 3a685508b7cde130fa20b6d4daa968374eeaa1c2c351191655c22cd4c54fe4d5
[INFO] running `"docker" "start" "-a" "3a685508b7cde130fa20b6d4daa968374eeaa1c2c351191655c22cd4c54fe4d5"`
[INFO] [stderr]     Checking kosaraju v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:10:23
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn kosaraju(adjacent: &Vec<Vec<usize>>) -> HashMap<usize, usize> {
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^ help: change this to: `&[Vec<usize>]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:26:15
[INFO] [stderr]    |
[INFO] [stderr] 26 |     adjacent: &Vec<Vec<usize>>,
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^ help: change this to: `&[Vec<usize>]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:42:15
[INFO] [stderr]    |
[INFO] [stderr] 42 |     adjacent: &Vec<Vec<usize>>,
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^ help: change this to: `&[Vec<usize>]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/main.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 | /     if !assigned.contains_key(&u) {
[INFO] [stderr] 46 | |         assigned.insert(u, root);
[INFO] [stderr] 47 | |         for &v in &adjacent[u] {
[INFO] [stderr] 48 | |             assign(v, root, adjacent, assigned);
[INFO] [stderr] 49 | |         }
[INFO] [stderr] 50 | |     }
[INFO] [stderr]    | |_____^ help: consider using: `assigned.entry(u)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_entry)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:53:24
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn transpose(adjacent: &Vec<Vec<usize>>) -> Vec<Vec<usize>> {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^ help: change this to: `&[Vec<usize>]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `u` is used to index `adjacent`
[INFO] [stderr]   --> src/main.rs:55:14
[INFO] [stderr]    |
[INFO] [stderr] 55 |     for u in 0..adjacent.len() {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 55 |     for (u, <item>) in adjacent.iter().enumerate() {
[INFO] [stderr]    |         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:10:23
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn kosaraju(adjacent: &Vec<Vec<usize>>) -> HashMap<usize, usize> {
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^ help: change this to: `&[Vec<usize>]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:26:15
[INFO] [stderr]    |
[INFO] [stderr] 26 |     adjacent: &Vec<Vec<usize>>,
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^ help: change this to: `&[Vec<usize>]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:42:15
[INFO] [stderr]    |
[INFO] [stderr] 42 |     adjacent: &Vec<Vec<usize>>,
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^ help: change this to: `&[Vec<usize>]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/main.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 | /     if !assigned.contains_key(&u) {
[INFO] [stderr] 46 | |         assigned.insert(u, root);
[INFO] [stderr] 47 | |         for &v in &adjacent[u] {
[INFO] [stderr] 48 | |             assign(v, root, adjacent, assigned);
[INFO] [stderr] 49 | |         }
[INFO] [stderr] 50 | |     }
[INFO] [stderr]    | |_____^ help: consider using: `assigned.entry(u)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_entry)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:53:24
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn transpose(adjacent: &Vec<Vec<usize>>) -> Vec<Vec<usize>> {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^ help: change this to: `&[Vec<usize>]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `u` is used to index `adjacent`
[INFO] [stderr]   --> src/main.rs:55:14
[INFO] [stderr]    |
[INFO] [stderr] 55 |     for u in 0..adjacent.len() {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 55 |     for (u, <item>) in adjacent.iter().enumerate() {
[INFO] [stderr]    |         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `"docker" "inspect" "3a685508b7cde130fa20b6d4daa968374eeaa1c2c351191655c22cd4c54fe4d5"`
[INFO] running `"docker" "rm" "-f" "3a685508b7cde130fa20b6d4daa968374eeaa1c2c351191655c22cd4c54fe4d5"`
[INFO] [stdout] 3a685508b7cde130fa20b6d4daa968374eeaa1c2c351191655c22cd4c54fe4d5