[INFO] updating cached repository SDRust/April-2018-challenge
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/SDRust/April-2018-challenge
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/SDRust/April-2018-challenge" "work/ex/clippy-test-run/sources/stable/gh/SDRust/April-2018-challenge"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/SDRust/April-2018-challenge'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/SDRust/April-2018-challenge" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/SDRust/April-2018-challenge"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/SDRust/April-2018-challenge'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 17b589f91e5a08d3aa0d3bb10e4c6ee5b166d604
[INFO] sha for GitHub repo SDRust/April-2018-challenge: 17b589f91e5a08d3aa0d3bb10e4c6ee5b166d604
[INFO] validating manifest of SDRust/April-2018-challenge 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 SDRust/April-2018-challenge 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 SDRust/April-2018-challenge
[INFO] finished frobbing SDRust/April-2018-challenge
[INFO] frobbed toml for SDRust/April-2018-challenge written to work/ex/clippy-test-run/sources/stable/gh/SDRust/April-2018-challenge/Cargo.toml
[INFO] started frobbing SDRust/April-2018-challenge
[INFO] finished frobbing SDRust/April-2018-challenge
[INFO] frobbed toml for SDRust/April-2018-challenge written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/SDRust/April-2018-challenge/Cargo.toml
[INFO] crate SDRust/April-2018-challenge 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 SDRust/April-2018-challenge against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/SDRust/April-2018-challenge:/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 -Dclippy::into_iter_on_array" "-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] 3ce30c7a95b693e94ae722c8faf533cf44e7d590b56b80a43537053b89f3ef32
[INFO] running `"docker" "start" "-a" "3ce30c7a95b693e94ae722c8faf533cf44e7d590b56b80a43537053b89f3ef32"`
[INFO] [stderr]     Checking april-2018-challenge v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: casting i16 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:224:21
[INFO] [stderr]     |
[INFO] [stderr] 224 |         let width = ((i16::MAX + channel1) as f64) as usize / 256 ;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(i16::MAX + channel1)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i16 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:224:21
[INFO] [stderr]     |
[INFO] [stderr] 224 |         let width = ((i16::MAX + channel1) as f64) as usize / 256 ;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(i16::MAX + channel1)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `"docker" "inspect" "3ce30c7a95b693e94ae722c8faf533cf44e7d590b56b80a43537053b89f3ef32"`
[INFO] running `"docker" "rm" "-f" "3ce30c7a95b693e94ae722c8faf533cf44e7d590b56b80a43537053b89f3ef32"`
[INFO] [stdout] 3ce30c7a95b693e94ae722c8faf533cf44e7d590b56b80a43537053b89f3ef32