[INFO] updating cached repository marcbreitung/problem-map-generator-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/marcbreitung/problem-map-generator-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/marcbreitung/problem-map-generator-rust" "work/ex/clippy-test-run/sources/stable/gh/marcbreitung/problem-map-generator-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/marcbreitung/problem-map-generator-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/marcbreitung/problem-map-generator-rust" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/marcbreitung/problem-map-generator-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/marcbreitung/problem-map-generator-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e354237c833a9b9f15d0a2f9c757a86d6bcd8c99
[INFO] sha for GitHub repo marcbreitung/problem-map-generator-rust: e354237c833a9b9f15d0a2f9c757a86d6bcd8c99
[INFO] validating manifest of marcbreitung/problem-map-generator-rust 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 marcbreitung/problem-map-generator-rust 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 marcbreitung/problem-map-generator-rust
[INFO] finished frobbing marcbreitung/problem-map-generator-rust
[INFO] frobbed toml for marcbreitung/problem-map-generator-rust written to work/ex/clippy-test-run/sources/stable/gh/marcbreitung/problem-map-generator-rust/Cargo.toml
[INFO] started frobbing marcbreitung/problem-map-generator-rust
[INFO] finished frobbing marcbreitung/problem-map-generator-rust
[INFO] frobbed toml for marcbreitung/problem-map-generator-rust written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/marcbreitung/problem-map-generator-rust/Cargo.toml
[INFO] crate marcbreitung/problem-map-generator-rust 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 marcbreitung/problem-map-generator-rust against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/marcbreitung/problem-map-generator-rust:/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] a179a3d290c9125fa1a611b6081382ac7762a0a6d5f73834a2425aeec970f265
[INFO] running `"docker" "start" "-a" "a179a3d290c9125fa1a611b6081382ac7762a0a6d5f73834a2425aeec970f265"`
[INFO] [stderr]     Checking serde v1.0.32
[INFO] [stderr]     Checking num-traits v0.2.1
[INFO] [stderr]    Compiling serde_derive_internals v0.20.1
[INFO] [stderr]    Compiling serde_derive v1.0.32
[INFO] [stderr]     Checking serde_json v1.0.11
[INFO] [stderr]     Checking problem_map_generator v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:83:13
[INFO] [stderr]    |
[INFO] [stderr] 83 | /             match leaves.get(&format!("{}-{}", pos_x, pos_y)) {
[INFO] [stderr] 84 | |                 Some(neighbour) => neighbours.push(neighbour.clone()),
[INFO] [stderr] 85 | |                 None => ()
[INFO] [stderr] 86 | |             }
[INFO] [stderr]    | |_____________^ help: try this: `if let Some(neighbour) = leaves.get(&format!("{}-{}", pos_x, pos_y)) { neighbours.push(neighbour.clone()) }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:83:13
[INFO] [stderr]    |
[INFO] [stderr] 83 | /             match leaves.get(&format!("{}-{}", pos_x, pos_y)) {
[INFO] [stderr] 84 | |                 Some(neighbour) => neighbours.push(neighbour.clone()),
[INFO] [stderr] 85 | |                 None => ()
[INFO] [stderr] 86 | |             }
[INFO] [stderr]    | |_____________^ help: try this: `if let Some(neighbour) = leaves.get(&format!("{}-{}", pos_x, pos_y)) { neighbours.push(neighbour.clone()) }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.84s
[INFO] running `"docker" "inspect" "a179a3d290c9125fa1a611b6081382ac7762a0a6d5f73834a2425aeec970f265"`
[INFO] running `"docker" "rm" "-f" "a179a3d290c9125fa1a611b6081382ac7762a0a6d5f73834a2425aeec970f265"`
[INFO] [stdout] a179a3d290c9125fa1a611b6081382ac7762a0a6d5f73834a2425aeec970f265