[INFO] updating cached repository iAmao/30-days-of-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/iAmao/30-days-of-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/iAmao/30-days-of-rust" "work/ex/clippy-test-run/sources/stable/gh/iAmao/30-days-of-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/iAmao/30-days-of-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/iAmao/30-days-of-rust" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/iAmao/30-days-of-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/iAmao/30-days-of-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1b329a19bcb0159274f39c3b757461c921235e8c
[INFO] sha for GitHub repo iAmao/30-days-of-rust: 1b329a19bcb0159274f39c3b757461c921235e8c
[INFO] validating manifest of iAmao/30-days-of-rust 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 iAmao/30-days-of-rust 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 iAmao/30-days-of-rust
[INFO] finished frobbing iAmao/30-days-of-rust
[INFO] frobbed toml for iAmao/30-days-of-rust written to work/ex/clippy-test-run/sources/stable/gh/iAmao/30-days-of-rust/Cargo.toml
[INFO] started frobbing iAmao/30-days-of-rust
[INFO] finished frobbing iAmao/30-days-of-rust
[INFO] frobbed toml for iAmao/30-days-of-rust written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/iAmao/30-days-of-rust/Cargo.toml
[INFO] crate iAmao/30-days-of-rust 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 iAmao/30-days-of-rust 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/gh/iAmao/30-days-of-rust:/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] 2a260107b770f700b918124f15611807cc2a70e7201e8c2ecc8c21c744b98ed9
[INFO] running `"docker" "start" "-a" "2a260107b770f700b918124f15611807cc2a70e7201e8c2ecc8c21c744b98ed9"`
[INFO] [stderr]     Checking thirty_days_of_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/lib/day_five.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |         println!("");
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/lib/day_five.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |         println!("");
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib/day_five.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |         return Person { age: initialAge };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Person { age: initialAge }`
[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/day_five.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     return input;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `input`
[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/day_five.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |         return Person { age: initialAge };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Person { age: initialAge }`
[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/day_five.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     return input;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `input`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.77s
[INFO] running `"docker" "inspect" "2a260107b770f700b918124f15611807cc2a70e7201e8c2ecc8c21c744b98ed9"`
[INFO] running `"docker" "rm" "-f" "2a260107b770f700b918124f15611807cc2a70e7201e8c2ecc8c21c744b98ed9"`
[INFO] [stdout] 2a260107b770f700b918124f15611807cc2a70e7201e8c2ecc8c21c744b98ed9