[INFO] updating cached repository MiguelFSoto/rust-binary-converter
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/MiguelFSoto/rust-binary-converter
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/MiguelFSoto/rust-binary-converter" "work/ex/clippy-test-run/sources/stable/gh/MiguelFSoto/rust-binary-converter"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/MiguelFSoto/rust-binary-converter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/MiguelFSoto/rust-binary-converter" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/MiguelFSoto/rust-binary-converter"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/MiguelFSoto/rust-binary-converter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ce24346bfeba06d6ae5147c9a7ac1677c94c04b7
[INFO] sha for GitHub repo MiguelFSoto/rust-binary-converter: ce24346bfeba06d6ae5147c9a7ac1677c94c04b7
[INFO] validating manifest of MiguelFSoto/rust-binary-converter 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 MiguelFSoto/rust-binary-converter 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 MiguelFSoto/rust-binary-converter
[INFO] finished frobbing MiguelFSoto/rust-binary-converter
[INFO] frobbed toml for MiguelFSoto/rust-binary-converter written to work/ex/clippy-test-run/sources/stable/gh/MiguelFSoto/rust-binary-converter/Cargo.toml
[INFO] started frobbing MiguelFSoto/rust-binary-converter
[INFO] finished frobbing MiguelFSoto/rust-binary-converter
[INFO] frobbed toml for MiguelFSoto/rust-binary-converter written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/MiguelFSoto/rust-binary-converter/Cargo.toml
[INFO] crate MiguelFSoto/rust-binary-converter 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 MiguelFSoto/rust-binary-converter 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/MiguelFSoto/rust-binary-converter:/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] ce77e4f00da293da930d33cdd29417439b31ce0401b0e23bae6579dfd17c5ab4
[INFO] running `"docker" "start" "-a" "ce77e4f00da293da930d33cdd29417439b31ce0401b0e23bae6579dfd17c5ab4"`
[INFO] [stderr]     Checking binary-converter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]  --> src/main.rs:8:3
[INFO] [stderr]   |
[INFO] [stderr] 8 |   return text;
[INFO] [stderr]   |   ^^^^^^^^^^^^ help: remove `return` as shown: `text`
[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: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:28:12
[INFO] [stderr]    |
[INFO] [stderr] 28 |     dec += (bit_num * u32::pow(2, i as u32)) as u64;
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u64::from(bit_num * u32::pow(2, i as u32))`
[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: unneeded return statement
[INFO] [stderr]  --> src/main.rs:8:3
[INFO] [stderr]   |
[INFO] [stderr] 8 |   return text;
[INFO] [stderr]   |   ^^^^^^^^^^^^ help: remove `return` as shown: `text`
[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: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:28:12
[INFO] [stderr]    |
[INFO] [stderr] 28 |     dec += (bit_num * u32::pow(2, i as u32)) as u64;
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u64::from(bit_num * u32::pow(2, i as u32))`
[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 0.82s
[INFO] running `"docker" "inspect" "ce77e4f00da293da930d33cdd29417439b31ce0401b0e23bae6579dfd17c5ab4"`
[INFO] running `"docker" "rm" "-f" "ce77e4f00da293da930d33cdd29417439b31ce0401b0e23bae6579dfd17c5ab4"`
[INFO] [stdout] ce77e4f00da293da930d33cdd29417439b31ce0401b0e23bae6579dfd17c5ab4