[INFO] updating cached repository SolowinFXVI/LearnRUST
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/SolowinFXVI/LearnRUST
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/SolowinFXVI/LearnRUST" "work/ex/clippy-test-run/sources/stable/gh/SolowinFXVI/LearnRUST"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/SolowinFXVI/LearnRUST'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/SolowinFXVI/LearnRUST" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/SolowinFXVI/LearnRUST"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/SolowinFXVI/LearnRUST'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3608a09bb68eb128516c1c513a47659a0646dac7
[INFO] sha for GitHub repo SolowinFXVI/LearnRUST: 3608a09bb68eb128516c1c513a47659a0646dac7
[INFO] validating manifest of SolowinFXVI/LearnRUST 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 SolowinFXVI/LearnRUST 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 SolowinFXVI/LearnRUST
[INFO] finished frobbing SolowinFXVI/LearnRUST
[INFO] frobbed toml for SolowinFXVI/LearnRUST written to work/ex/clippy-test-run/sources/stable/gh/SolowinFXVI/LearnRUST/Cargo.toml
[INFO] started frobbing SolowinFXVI/LearnRUST
[INFO] finished frobbing SolowinFXVI/LearnRUST
[INFO] frobbed toml for SolowinFXVI/LearnRUST written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/SolowinFXVI/LearnRUST/Cargo.toml
[INFO] crate SolowinFXVI/LearnRUST 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 SolowinFXVI/LearnRUST 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/gh/SolowinFXVI/LearnRUST:/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] a1a8626ba97ea45202efa5ed493b03f01e7f594d2f1007d411d694a06a33bc9a
[INFO] running `"docker" "start" "-a" "a1a8626ba97ea45202efa5ed493b03f01e7f594d2f1007d411d694a06a33bc9a"`
[INFO] [stderr]     Checking learnrust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     return a + b;
[INFO] [stderr]   |     ^^^^^^^^^^^^^ help: remove `return` as shown: `a + b`
[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:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     return a + b;
[INFO] [stderr]   |     ^^^^^^^^^^^^^ help: remove `return` as shown: `a + b`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `"docker" "inspect" "a1a8626ba97ea45202efa5ed493b03f01e7f594d2f1007d411d694a06a33bc9a"`
[INFO] running `"docker" "rm" "-f" "a1a8626ba97ea45202efa5ed493b03f01e7f594d2f1007d411d694a06a33bc9a"`
[INFO] [stdout] a1a8626ba97ea45202efa5ed493b03f01e7f594d2f1007d411d694a06a33bc9a