[INFO] updating cached repository coder543/impulse
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/coder543/impulse
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/coder543/impulse" "work/ex/clippy-test-run/sources/stable/gh/coder543/impulse"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/coder543/impulse'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/coder543/impulse" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/coder543/impulse"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/coder543/impulse'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a6c811fc3a700b4530dcfbfe676a32ac1b4aab0a
[INFO] sha for GitHub repo coder543/impulse: a6c811fc3a700b4530dcfbfe676a32ac1b4aab0a
[INFO] validating manifest of coder543/impulse 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 coder543/impulse 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 coder543/impulse
[INFO] finished frobbing coder543/impulse
[INFO] frobbed toml for coder543/impulse written to work/ex/clippy-test-run/sources/stable/gh/coder543/impulse/Cargo.toml
[INFO] started frobbing coder543/impulse
[INFO] finished frobbing coder543/impulse
[INFO] frobbed toml for coder543/impulse written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/coder543/impulse/Cargo.toml
[INFO] crate coder543/impulse 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 coder543/impulse against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/coder543/impulse:/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] e72c9a3815e846d3778a7a03b1b2d0c2e2cbc7f2cb420cc15c98c1407ab1fcb6
[INFO] running `"docker" "start" "-a" "e72c9a3815e846d3778a7a03b1b2d0c2e2cbc7f2cb420cc15c98c1407ab1fcb6"`
[INFO] [stderr]     Checking ws v0.7.3
[INFO] [stderr]     Checking env_logger v0.5.4
[INFO] [stderr]     Checking impulse v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: called `map(f)` on an Option value where `f` is a unit closure
[INFO] [stderr]   --> src/main.rs:39:13
[INFO] [stderr]    |
[INFO] [stderr] 39 |                sockets.get(user).map(|socket| {
[INFO] [stderr]    |   _____________^
[INFO] [stderr]    |  |_____________|
[INFO] [stderr]    | ||
[INFO] [stderr] 40 | ||                 let _ = socket.send(message.clone());
[INFO] [stderr] 41 | ||             });
[INFO] [stderr]    | ||______________^- help: try this: `if let Some(socket) = sockets.get(user) { let _ = socket.send(message.clone()); }`
[INFO] [stderr]    | |_______________|
[INFO] [stderr]    | 
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::option_map_unit_fn)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#option_map_unit_fn
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]    --> src/main.rs:136:37
[INFO] [stderr]     |
[INFO] [stderr] 136 |                     .or_insert_with(|| HashSet::new())
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^ help: remove closure as shown: `HashSet::new`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_closure)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]    --> src/main.rs:164:37
[INFO] [stderr]     |
[INFO] [stderr] 164 |                     .or_insert_with(|| HashSet::new())
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^ help: remove closure as shown: `HashSet::new`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: called `map(f)` on an Option value where `f` is a unit closure
[INFO] [stderr]   --> src/main.rs:39:13
[INFO] [stderr]    |
[INFO] [stderr] 39 |                sockets.get(user).map(|socket| {
[INFO] [stderr]    |   _____________^
[INFO] [stderr]    |  |_____________|
[INFO] [stderr]    | ||
[INFO] [stderr] 40 | ||                 let _ = socket.send(message.clone());
[INFO] [stderr] 41 | ||             });
[INFO] [stderr]    | ||______________^- help: try this: `if let Some(socket) = sockets.get(user) { let _ = socket.send(message.clone()); }`
[INFO] [stderr]    | |_______________|
[INFO] [stderr]    | 
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::option_map_unit_fn)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#option_map_unit_fn
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]    --> src/main.rs:136:37
[INFO] [stderr]     |
[INFO] [stderr] 136 |                     .or_insert_with(|| HashSet::new())
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^ help: remove closure as shown: `HashSet::new`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_closure)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]    --> src/main.rs:164:37
[INFO] [stderr]     |
[INFO] [stderr] 164 |                     .or_insert_with(|| HashSet::new())
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^ help: remove closure as shown: `HashSet::new`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.82s
[INFO] running `"docker" "inspect" "e72c9a3815e846d3778a7a03b1b2d0c2e2cbc7f2cb420cc15c98c1407ab1fcb6"`
[INFO] running `"docker" "rm" "-f" "e72c9a3815e846d3778a7a03b1b2d0c2e2cbc7f2cb420cc15c98c1407ab1fcb6"`
[INFO] [stdout] e72c9a3815e846d3778a7a03b1b2d0c2e2cbc7f2cb420cc15c98c1407ab1fcb6