[INFO] updating cached repository RadicalZephyr/hyper-explicit-setup-ex
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/RadicalZephyr/hyper-explicit-setup-ex
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/RadicalZephyr/hyper-explicit-setup-ex" "work/ex/clippy-test-run/sources/stable/gh/RadicalZephyr/hyper-explicit-setup-ex"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/RadicalZephyr/hyper-explicit-setup-ex'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/RadicalZephyr/hyper-explicit-setup-ex" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/RadicalZephyr/hyper-explicit-setup-ex"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/RadicalZephyr/hyper-explicit-setup-ex'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 056408e705f89143f32c8b2175918d2df2eb34bd
[INFO] sha for GitHub repo RadicalZephyr/hyper-explicit-setup-ex: 056408e705f89143f32c8b2175918d2df2eb34bd
[INFO] validating manifest of RadicalZephyr/hyper-explicit-setup-ex 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 RadicalZephyr/hyper-explicit-setup-ex 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 RadicalZephyr/hyper-explicit-setup-ex
[INFO] finished frobbing RadicalZephyr/hyper-explicit-setup-ex
[INFO] frobbed toml for RadicalZephyr/hyper-explicit-setup-ex written to work/ex/clippy-test-run/sources/stable/gh/RadicalZephyr/hyper-explicit-setup-ex/Cargo.toml
[INFO] started frobbing RadicalZephyr/hyper-explicit-setup-ex
[INFO] finished frobbing RadicalZephyr/hyper-explicit-setup-ex
[INFO] frobbed toml for RadicalZephyr/hyper-explicit-setup-ex written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/RadicalZephyr/hyper-explicit-setup-ex/Cargo.toml
[INFO] crate RadicalZephyr/hyper-explicit-setup-ex 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 RadicalZephyr/hyper-explicit-setup-ex against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/RadicalZephyr/hyper-explicit-setup-ex:/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] 879671fd7067ac48e299a23878ace5cdba58f12fdd2868d7b4f8d9153f5501d9
[INFO] running `"docker" "start" "-a" "879671fd7067ac48e299a23878ace5cdba58f12fdd2868d7b4f8d9153f5501d9"`
[INFO] [stderr]     Checking simple_logger v0.5.0
[INFO] [stderr]     Checking tokio-current-thread v0.1.0
[INFO] [stderr]     Checking hyper-explicit v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/main.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     serve_all
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/main.rs:50:21
[INFO] [stderr]    |
[INFO] [stderr] 50 |       let serve_all = serve.for_each(move |connecting| {
[INFO] [stderr]    |  _____________________^
[INFO] [stderr] 51 | |         trace!("spawning connection future onto the current thread");
[INFO] [stderr] 52 | |         trace!("got a {:?}", connecting);
[INFO] [stderr] 53 | |         current_thread::spawn(connecting
[INFO] [stderr] ...  |
[INFO] [stderr] 59 | |         Ok(())
[INFO] [stderr] 60 | |     }).map_err(|e| { error!("serve_all: {:?}", e); () });
[INFO] [stderr]    | |________________________________________________________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit expression
[INFO] [stderr]   --> src/main.rs:54:81
[INFO] [stderr]    |
[INFO] [stderr] 54 |                               .map_err(|e| { error!("serve.for_each: {:?}", e); () })
[INFO] [stderr]    |                                                                                 ^^ help: remove the final `()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit expression
[INFO] [stderr]   --> src/main.rs:60:52
[INFO] [stderr]    |
[INFO] [stderr] 60 |     }).map_err(|e| { error!("serve_all: {:?}", e); () });
[INFO] [stderr]    |                                                    ^^ help: remove the final `()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/main.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     serve_all
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/main.rs:50:21
[INFO] [stderr]    |
[INFO] [stderr] 50 |       let serve_all = serve.for_each(move |connecting| {
[INFO] [stderr]    |  _____________________^
[INFO] [stderr] 51 | |         trace!("spawning connection future onto the current thread");
[INFO] [stderr] 52 | |         trace!("got a {:?}", connecting);
[INFO] [stderr] 53 | |         current_thread::spawn(connecting
[INFO] [stderr] ...  |
[INFO] [stderr] 59 | |         Ok(())
[INFO] [stderr] 60 | |     }).map_err(|e| { error!("serve_all: {:?}", e); () });
[INFO] [stderr]    | |________________________________________________________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit expression
[INFO] [stderr]   --> src/main.rs:54:81
[INFO] [stderr]    |
[INFO] [stderr] 54 |                               .map_err(|e| { error!("serve.for_each: {:?}", e); () })
[INFO] [stderr]    |                                                                                 ^^ help: remove the final `()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit expression
[INFO] [stderr]   --> src/main.rs:60:52
[INFO] [stderr]    |
[INFO] [stderr] 60 |     }).map_err(|e| { error!("serve_all: {:?}", e); () });
[INFO] [stderr]    |                                                    ^^ help: remove the final `()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.01s
[INFO] running `"docker" "inspect" "879671fd7067ac48e299a23878ace5cdba58f12fdd2868d7b4f8d9153f5501d9"`
[INFO] running `"docker" "rm" "-f" "879671fd7067ac48e299a23878ace5cdba58f12fdd2868d7b4f8d9153f5501d9"`
[INFO] [stdout] 879671fd7067ac48e299a23878ace5cdba58f12fdd2868d7b4f8d9153f5501d9