[INFO] crate redb 0.0.0 is already in cache
[INFO] extracting crate redb 0.0.0 into work/ex/clippy-test-run/sources/stable/reg/redb/0.0.0
[INFO] extracting crate redb 0.0.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/redb/0.0.0
[INFO] validating manifest of redb-0.0.0 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 redb-0.0.0 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 redb-0.0.0
[INFO] finished frobbing redb-0.0.0
[INFO] frobbed toml for redb-0.0.0 written to work/ex/clippy-test-run/sources/stable/reg/redb/0.0.0/Cargo.toml
[INFO] started frobbing redb-0.0.0
[INFO] finished frobbing redb-0.0.0
[INFO] frobbed toml for redb-0.0.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/redb/0.0.0/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 redb-0.0.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/redb/0.0.0:/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] 92195f9271e8f5399fa85dc34c5dc54b91bdb65ef074343697643817fc5d01b6
[INFO] running `"docker" "start" "-a" "92195f9271e8f5399fa85dc34c5dc54b91bdb65ef074343697643817fc5d01b6"`
[INFO] [stderr]     Checking redb v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the loop variable `i` is only used to index `data`.
[INFO] [stderr]   --> src/main.rs:11:14
[INFO] [stderr]    |
[INFO] [stderr] 11 |     for i in 0..ELEMENTS {
[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] 11 |     for <item> in data.iter_mut().take(ELEMENTS) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this `.fold` can be written more succinctly using another method
[INFO] [stderr]   --> src/main.rs:18:33
[INFO] [stderr]    |
[INFO] [stderr] 18 |           .map(|x| x.count_ones())
[INFO] [stderr]    |  _________________________________^
[INFO] [stderr] 19 | |         .fold(0, |sum, x| sum + x);
[INFO] [stderr]    | |__________________________________^ help: try: `.sum()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unnecessary_fold)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `data`.
[INFO] [stderr]   --> src/main.rs:11:14
[INFO] [stderr]    |
[INFO] [stderr] 11 |     for i in 0..ELEMENTS {
[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] 11 |     for <item> in data.iter_mut().take(ELEMENTS) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this `.fold` can be written more succinctly using another method
[INFO] [stderr]   --> src/main.rs:18:33
[INFO] [stderr]    |
[INFO] [stderr] 18 |           .map(|x| x.count_ones())
[INFO] [stderr]    |  _________________________________^
[INFO] [stderr] 19 | |         .fold(0, |sum, x| sum + x);
[INFO] [stderr]    | |__________________________________^ help: try: `.sum()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unnecessary_fold)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `"docker" "inspect" "92195f9271e8f5399fa85dc34c5dc54b91bdb65ef074343697643817fc5d01b6"`
[INFO] running `"docker" "rm" "-f" "92195f9271e8f5399fa85dc34c5dc54b91bdb65ef074343697643817fc5d01b6"`
[INFO] [stdout] 92195f9271e8f5399fa85dc34c5dc54b91bdb65ef074343697643817fc5d01b6