[INFO] updating cached repository juanibiapina/collatz-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/juanibiapina/collatz-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/juanibiapina/collatz-rs" "work/ex/clippy-test-run/sources/stable/gh/juanibiapina/collatz-rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/juanibiapina/collatz-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/juanibiapina/collatz-rs" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/juanibiapina/collatz-rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/juanibiapina/collatz-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3cf388bca8db8abbe02bc0f726dad0a6e9397605
[INFO] sha for GitHub repo juanibiapina/collatz-rs: 3cf388bca8db8abbe02bc0f726dad0a6e9397605
[INFO] validating manifest of juanibiapina/collatz-rs 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 juanibiapina/collatz-rs 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 juanibiapina/collatz-rs
[INFO] finished frobbing juanibiapina/collatz-rs
[INFO] frobbed toml for juanibiapina/collatz-rs written to work/ex/clippy-test-run/sources/stable/gh/juanibiapina/collatz-rs/Cargo.toml
[INFO] started frobbing juanibiapina/collatz-rs
[INFO] finished frobbing juanibiapina/collatz-rs
[INFO] frobbed toml for juanibiapina/collatz-rs written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/juanibiapina/collatz-rs/Cargo.toml
[INFO] crate juanibiapina/collatz-rs 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 juanibiapina/collatz-rs 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-6/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/juanibiapina/collatz-rs:/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] 1d47d22aca7212073867266c17bfec52153076d37132bac891278dd9e4c6ee1b
[INFO] running `"docker" "start" "-a" "1d47d22aca7212073867266c17bfec52153076d37132bac891278dd9e4c6ee1b"`
[INFO] [stderr]     Checking collatz-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]  --> src/main.rs:2:55
[INFO] [stderr]   |
[INFO] [stderr] 2 |     println!("longest sequence: {}", longest_sequence(1000000));
[INFO] [stderr]   |                                                       ^^^^^^^ help: consider: `1_000_000`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     return total_size;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `total_size`
[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/main.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     return max_starter;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `max_starter`
[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: long literal lacking separators
[INFO] [stderr]  --> src/main.rs:2:55
[INFO] [stderr]   |
[INFO] [stderr] 2 |     println!("longest sequence: {}", longest_sequence(1000000));
[INFO] [stderr]   |                                                       ^^^^^^^ help: consider: `1_000_000`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     return total_size;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `total_size`
[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/main.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     return max_starter;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `max_starter`
[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: an inclusive range would be more readable
[INFO] [stderr]   --> src/main.rs:28:14
[INFO] [stderr]    |
[INFO] [stderr] 28 |     for i in 1..last + 1 {
[INFO] [stderr]    |              ^^^^^^^^^^^ help: use: `1..=last`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/main.rs:28:14
[INFO] [stderr]    |
[INFO] [stderr] 28 |     for i in 1..last + 1 {
[INFO] [stderr]    |              ^^^^^^^^^^^ help: use: `1..=last`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "1d47d22aca7212073867266c17bfec52153076d37132bac891278dd9e4c6ee1b"`
[INFO] running `"docker" "rm" "-f" "1d47d22aca7212073867266c17bfec52153076d37132bac891278dd9e4c6ee1b"`
[INFO] [stdout] 1d47d22aca7212073867266c17bfec52153076d37132bac891278dd9e4c6ee1b