[INFO] updating cached repository knoby/cybercon
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/knoby/cybercon
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/knoby/cybercon" "work/ex/clippy-test-run/sources/stable/gh/knoby/cybercon"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/knoby/cybercon'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/knoby/cybercon" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/knoby/cybercon"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/knoby/cybercon'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ebd97c2ba4c49d393d97c4ef1c6c3ca90988d22a
[INFO] sha for GitHub repo knoby/cybercon: ebd97c2ba4c49d393d97c4ef1c6c3ca90988d22a
[INFO] validating manifest of knoby/cybercon 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 knoby/cybercon 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 knoby/cybercon
[INFO] finished frobbing knoby/cybercon
[INFO] frobbed toml for knoby/cybercon written to work/ex/clippy-test-run/sources/stable/gh/knoby/cybercon/Cargo.toml
[INFO] started frobbing knoby/cybercon
[INFO] finished frobbing knoby/cybercon
[INFO] frobbed toml for knoby/cybercon written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/knoby/cybercon/Cargo.toml
[INFO] crate knoby/cybercon 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 knoby/cybercon 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-2/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/knoby/cybercon:/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] a9aacd7e3dfde799c7ea50ddc8f521f78c4fe24bafa9bf109c7ac8dded39f2e8
[INFO] running `"docker" "start" "-a" "a9aacd7e3dfde799c7ea50ddc8f521f78c4fe24bafa9bf109c7ac8dded39f2e8"`
[INFO] [stderr]     Checking serial-core v0.4.0
[INFO] [stderr]     Checking serial-unix v0.4.0
[INFO] [stderr]     Checking serial v0.4.0
[INFO] [stderr]     Checking cybercon v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/cm_com/msg_gen.rs:43:2
[INFO] [stderr]    |
[INFO] [stderr] 43 |       let code: u8;
[INFO] [stderr]    |  _____^
[INFO] [stderr] 44 | |
[INFO] [stderr] 45 | |     if toggle {
[INFO] [stderr] 46 | |         code = 0x08;
[INFO] [stderr] 47 | |     } else {
[INFO] [stderr] 48 | |         code = 0x00;
[INFO] [stderr] 49 | |     }
[INFO] [stderr]    | |_____^ help: it is more idiomatic to write: `let code = if toggle { 0x08 } else { 0x00 };`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/main.rs:6:2
[INFO] [stderr]   |
[INFO] [stderr] 6 |     cm_com::connect("/dev/ttyUSB0".to_string());
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/cm_com/msg_gen.rs:43:2
[INFO] [stderr]    |
[INFO] [stderr] 43 |       let code: u8;
[INFO] [stderr]    |  _____^
[INFO] [stderr] 44 | |
[INFO] [stderr] 45 | |     if toggle {
[INFO] [stderr] 46 | |         code = 0x08;
[INFO] [stderr] 47 | |     } else {
[INFO] [stderr] 48 | |         code = 0x00;
[INFO] [stderr] 49 | |     }
[INFO] [stderr]    | |_____^ help: it is more idiomatic to write: `let code = if toggle { 0x08 } else { 0x00 };`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/main.rs:6:2
[INFO] [stderr]   |
[INFO] [stderr] 6 |     cm_com::connect("/dev/ttyUSB0".to_string());
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.84s
[INFO] running `"docker" "inspect" "a9aacd7e3dfde799c7ea50ddc8f521f78c4fe24bafa9bf109c7ac8dded39f2e8"`
[INFO] running `"docker" "rm" "-f" "a9aacd7e3dfde799c7ea50ddc8f521f78c4fe24bafa9bf109c7ac8dded39f2e8"`
[INFO] [stdout] a9aacd7e3dfde799c7ea50ddc8f521f78c4fe24bafa9bf109c7ac8dded39f2e8