[INFO] updating cached repository tsinghqs/Rust-Guessing-Game
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tsinghqs/Rust-Guessing-Game
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tsinghqs/Rust-Guessing-Game" "work/ex/clippy-test-run/sources/stable/gh/tsinghqs/Rust-Guessing-Game"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/tsinghqs/Rust-Guessing-Game'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tsinghqs/Rust-Guessing-Game" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/tsinghqs/Rust-Guessing-Game"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/tsinghqs/Rust-Guessing-Game'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] abe36a1c1daa9e2b75662765d57e8371e4a1f099
[INFO] sha for GitHub repo tsinghqs/Rust-Guessing-Game: abe36a1c1daa9e2b75662765d57e8371e4a1f099
[INFO] validating manifest of tsinghqs/Rust-Guessing-Game 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 tsinghqs/Rust-Guessing-Game 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 tsinghqs/Rust-Guessing-Game
[INFO] finished frobbing tsinghqs/Rust-Guessing-Game
[INFO] frobbed toml for tsinghqs/Rust-Guessing-Game written to work/ex/clippy-test-run/sources/stable/gh/tsinghqs/Rust-Guessing-Game/Cargo.toml
[INFO] started frobbing tsinghqs/Rust-Guessing-Game
[INFO] finished frobbing tsinghqs/Rust-Guessing-Game
[INFO] frobbed toml for tsinghqs/Rust-Guessing-Game written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/tsinghqs/Rust-Guessing-Game/Cargo.toml
[INFO] crate tsinghqs/Rust-Guessing-Game 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 tsinghqs/Rust-Guessing-Game 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/tsinghqs/Rust-Guessing-Game:/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] 3f3696f04e2189375c055443160a77c7e0a30f08e49f83fd96c62b9d602d7edd
[INFO] running `"docker" "start" "-a" "3f3696f04e2189375c055443160a77c7e0a30f08e49f83fd96c62b9d602d7edd"`
[INFO] [stderr]     Checking rand v0.5.1
[INFO] [stderr]     Checking RustPractice v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: crate `RustPractice` should have a snake case name such as `rust_practice`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `RustPractice` should have a snake case name such as `rust_practice`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.03s
[INFO] running `"docker" "inspect" "3f3696f04e2189375c055443160a77c7e0a30f08e49f83fd96c62b9d602d7edd"`
[INFO] running `"docker" "rm" "-f" "3f3696f04e2189375c055443160a77c7e0a30f08e49f83fd96c62b9d602d7edd"`
[INFO] [stdout] 3f3696f04e2189375c055443160a77c7e0a30f08e49f83fd96c62b9d602d7edd