[INFO] updating cached repository suttung3r/rustechoserver
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/suttung3r/rustechoserver
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/suttung3r/rustechoserver" "work/ex/clippy-test-run/sources/stable/gh/suttung3r/rustechoserver"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/suttung3r/rustechoserver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/suttung3r/rustechoserver" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/suttung3r/rustechoserver"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/suttung3r/rustechoserver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9ca492e70e3d465812bf595b8ea3d864398b4c78
[INFO] sha for GitHub repo suttung3r/rustechoserver: 9ca492e70e3d465812bf595b8ea3d864398b4c78
[INFO] validating manifest of suttung3r/rustechoserver 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 suttung3r/rustechoserver 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 suttung3r/rustechoserver
[INFO] finished frobbing suttung3r/rustechoserver
[INFO] frobbed toml for suttung3r/rustechoserver written to work/ex/clippy-test-run/sources/stable/gh/suttung3r/rustechoserver/Cargo.toml
[INFO] started frobbing suttung3r/rustechoserver
[INFO] finished frobbing suttung3r/rustechoserver
[INFO] frobbed toml for suttung3r/rustechoserver written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/suttung3r/rustechoserver/Cargo.toml
[INFO] crate suttung3r/rustechoserver 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 suttung3r/rustechoserver 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-4/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/suttung3r/rustechoserver:/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] 265f27631154ea7b4178b433f1c26381bbc2fac74c768ec5a1b16508387eb978
[INFO] running `"docker" "start" "-a" "265f27631154ea7b4178b433f1c26381bbc2fac74c768ec5a1b16508387eb978"`
[INFO] [stderr]     Checking socket_test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:16:3
[INFO] [stderr]    |
[INFO] [stderr] 16 |   return stream;
[INFO] [stderr]    |   ^^^^^^^^^^^^^^ help: remove `return` as shown: `stream`
[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: unused variable: `res`
[INFO] [stderr]   --> src/main.rs:42:14
[INFO] [stderr]    |
[INFO] [stderr] 42 |           Ok(res) => {}
[INFO] [stderr]    |              ^^^ help: consider using `_res` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:16:3
[INFO] [stderr]    |
[INFO] [stderr] 16 |   return stream;
[INFO] [stderr]    |   ^^^^^^^^^^^^^^ help: remove `return` as shown: `stream`
[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: unused variable: `res`
[INFO] [stderr]   --> src/main.rs:42:14
[INFO] [stderr]    |
[INFO] [stderr] 42 |           Ok(res) => {}
[INFO] [stderr]    |              ^^^ help: consider using `_res` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `"docker" "inspect" "265f27631154ea7b4178b433f1c26381bbc2fac74c768ec5a1b16508387eb978"`
[INFO] running `"docker" "rm" "-f" "265f27631154ea7b4178b433f1c26381bbc2fac74c768ec5a1b16508387eb978"`
[INFO] [stdout] 265f27631154ea7b4178b433f1c26381bbc2fac74c768ec5a1b16508387eb978