[INFO] updating cached repository aapis/rust-playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/aapis/rust-playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/aapis/rust-playground" "work/ex/clippy-test-run/sources/stable/gh/aapis/rust-playground"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/aapis/rust-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/aapis/rust-playground" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/aapis/rust-playground"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/aapis/rust-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 92d08d5fbbcd994f82e1ca4ba60325d90822f6bb
[INFO] sha for GitHub repo aapis/rust-playground: 92d08d5fbbcd994f82e1ca4ba60325d90822f6bb
[INFO] validating manifest of aapis/rust-playground 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 aapis/rust-playground 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 aapis/rust-playground
[INFO] finished frobbing aapis/rust-playground
[INFO] frobbed toml for aapis/rust-playground written to work/ex/clippy-test-run/sources/stable/gh/aapis/rust-playground/Cargo.toml
[INFO] started frobbing aapis/rust-playground
[INFO] finished frobbing aapis/rust-playground
[INFO] frobbed toml for aapis/rust-playground written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/aapis/rust-playground/Cargo.toml
[INFO] crate aapis/rust-playground 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 aapis/rust-playground against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/aapis/rust-playground:/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] 02728316226b7ad9a8a155c2a21780f5e1972c99d4d054fb4c0c740b10edb267
[INFO] running `"docker" "start" "-a" "02728316226b7ad9a8a155c2a21780f5e1972c99d4d054fb4c0c740b10edb267"`
[INFO] [stderr]     Checking rust_playground v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]  --> src/exercise/loops.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |         to = to - 1;
[INFO] [stderr]   |         ^^^^^^^^^^^ help: replace it with: `to -= 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: manual implementation of an assign operation
[INFO] [stderr]  --> src/exercise/loops.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |         to = to - 1;
[INFO] [stderr]   |         ^^^^^^^^^^^ help: replace it with: `to -= 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 1.00s
[INFO] running `"docker" "inspect" "02728316226b7ad9a8a155c2a21780f5e1972c99d4d054fb4c0c740b10edb267"`
[INFO] running `"docker" "rm" "-f" "02728316226b7ad9a8a155c2a21780f5e1972c99d4d054fb4c0c740b10edb267"`
[INFO] [stdout] 02728316226b7ad9a8a155c2a21780f5e1972c99d4d054fb4c0c740b10edb267