[INFO] updating cached repository georgehipp/guessing_game
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/georgehipp/guessing_game
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/georgehipp/guessing_game" "work/ex/clippy-test-run/sources/stable/gh/georgehipp/guessing_game"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/georgehipp/guessing_game'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/georgehipp/guessing_game" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/georgehipp/guessing_game"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/georgehipp/guessing_game'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] da7642d4c31b4e1ba1b42f1197b57f7f877860a6
[INFO] sha for GitHub repo georgehipp/guessing_game: da7642d4c31b4e1ba1b42f1197b57f7f877860a6
[INFO] validating manifest of georgehipp/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 georgehipp/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 georgehipp/guessing_game
[INFO] finished frobbing georgehipp/guessing_game
[INFO] frobbed toml for georgehipp/guessing_game written to work/ex/clippy-test-run/sources/stable/gh/georgehipp/guessing_game/Cargo.toml
[INFO] started frobbing georgehipp/guessing_game
[INFO] finished frobbing georgehipp/guessing_game
[INFO] frobbed toml for georgehipp/guessing_game written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/georgehipp/guessing_game/Cargo.toml
[INFO] crate georgehipp/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 georgehipp/guessing_game against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-1/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/georgehipp/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] 8355073dffac6738d9ac76f29619be1573dad104230054241c0c332460131f7f
[INFO] running `"docker" "start" "-a" "8355073dffac6738d9ac76f29619be1573dad104230054241c0c332460131f7f"`
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]    Compiling backtrace v0.3.6
[INFO] [stderr]    Compiling cargo_metadata v0.3.3
[INFO] [stderr]    Compiling skeptic v0.13.2
[INFO] [stderr]    Compiling assert_cli v0.5.4
[INFO] [stderr]     Checking guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/bin/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     return secret_number;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `secret_number`
[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: manual implementation of an assign operation
[INFO] [stderr]   --> src/bin/main.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |         count = count + 1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^ help: replace it with: `count += 1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/bin/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     return secret_number;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `secret_number`
[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: manual implementation of an assign operation
[INFO] [stderr]   --> src/bin/main.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |         count = count + 1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^ help: replace it with: `count += 1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.69s
[INFO] running `"docker" "inspect" "8355073dffac6738d9ac76f29619be1573dad104230054241c0c332460131f7f"`
[INFO] running `"docker" "rm" "-f" "8355073dffac6738d9ac76f29619be1573dad104230054241c0c332460131f7f"`
[INFO] [stdout] 8355073dffac6738d9ac76f29619be1573dad104230054241c0c332460131f7f