[INFO] updating cached repository luser/hexdump
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/luser/hexdump
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/luser/hexdump" "work/ex/clippy-test-run/sources/stable/gh/luser/hexdump"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/luser/hexdump'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/luser/hexdump" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/luser/hexdump"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/luser/hexdump'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 78e82f88f64fbe2411914afec13ff09e9695c9a2
[INFO] sha for GitHub repo luser/hexdump: 78e82f88f64fbe2411914afec13ff09e9695c9a2
[INFO] validating manifest of luser/hexdump 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 luser/hexdump 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 luser/hexdump
[INFO] finished frobbing luser/hexdump
[INFO] frobbed toml for luser/hexdump written to work/ex/clippy-test-run/sources/stable/gh/luser/hexdump/Cargo.toml
[INFO] started frobbing luser/hexdump
[INFO] finished frobbing luser/hexdump
[INFO] frobbed toml for luser/hexdump written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/luser/hexdump/Cargo.toml
[INFO] crate luser/hexdump 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 luser/hexdump against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/luser/hexdump:/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] a5d467c0a28e75ac2ca1c694c39b1c42c7365ee4f7604f402d98095d987ad1b7
[INFO] running `"docker" "start" "-a" "a5d467c0a28e75ac2ca1c694c39b1c42c7365ee4f7604f402d98095d987ad1b7"`
[INFO] [stderr]    Compiling pulldown-cmark v0.1.0
[INFO] [stderr]    Compiling libc v0.2.30
[INFO] [stderr]    Compiling serde v1.0.11
[INFO] [stderr]    Compiling itoa v0.3.3
[INFO] [stderr]    Compiling bytecount v0.1.7
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]     Checking fallible-streaming-iterator v0.1.5
[INFO] [stderr]    Compiling rand v0.3.16
[INFO] [stderr]    Compiling tempdir v0.3.5
[INFO] [stderr]    Compiling toml v0.4.5
[INFO] [stderr]    Compiling serde_json v1.0.2
[INFO] [stderr]    Compiling skeptic v0.12.3
[INFO] [stderr]    Compiling read-byte-slice v0.1.0
[INFO] [stderr]     Checking hexdump v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]  --> src/lib.rs:6:17
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn printable(b: &u8) -> char {
[INFO] [stderr]   |                 ^^^ help: consider passing by value instead: `u8`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]  --> src/lib.rs:9:31
[INFO] [stderr]   |
[INFO] [stderr] 9 |         ::std::char::from_u32(b as u32).unwrap()
[INFO] [stderr]   |                               ^^^^^^^^ help: try: `u32::from(b)`
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]  --> src/lib.rs:6:17
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn printable(b: &u8) -> char {
[INFO] [stderr]   |                 ^^^ help: consider passing by value instead: `u8`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]  --> src/lib.rs:9:31
[INFO] [stderr]   |
[INFO] [stderr] 9 |         ::std::char::from_u32(b as u32).unwrap()
[INFO] [stderr]   |                               ^^^^^^^^ help: try: `u32::from(b)`
[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 27.21s
[INFO] running `"docker" "inspect" "a5d467c0a28e75ac2ca1c694c39b1c42c7365ee4f7604f402d98095d987ad1b7"`
[INFO] running `"docker" "rm" "-f" "a5d467c0a28e75ac2ca1c694c39b1c42c7365ee4f7604f402d98095d987ad1b7"`
[INFO] [stdout] a5d467c0a28e75ac2ca1c694c39b1c42c7365ee4f7604f402d98095d987ad1b7