[INFO] updating cached repository flit77/wasm-playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/flit77/wasm-playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/flit77/wasm-playground" "work/ex/clippy-test-run/sources/stable/gh/flit77/wasm-playground"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/flit77/wasm-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/flit77/wasm-playground" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/flit77/wasm-playground"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/flit77/wasm-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 765c7a4aca5b05d719b3dd7d73008576da951436
[INFO] sha for GitHub repo flit77/wasm-playground: 765c7a4aca5b05d719b3dd7d73008576da951436
[INFO] validating manifest of flit77/wasm-playground 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 flit77/wasm-playground 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 flit77/wasm-playground
[INFO] finished frobbing flit77/wasm-playground
[INFO] frobbed toml for flit77/wasm-playground written to work/ex/clippy-test-run/sources/stable/gh/flit77/wasm-playground/Cargo.toml
[INFO] started frobbing flit77/wasm-playground
[INFO] finished frobbing flit77/wasm-playground
[INFO] frobbed toml for flit77/wasm-playground written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/flit77/wasm-playground/Cargo.toml
[INFO] crate flit77/wasm-playground 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 flit77/wasm-playground 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/flit77/wasm-playground:/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] 19c4612a6f9421b834f9e96b5d8d614a73f8484b26db2573942186e7d918bba4
[INFO] running `"docker" "start" "-a" "19c4612a6f9421b834f9e96b5d8d614a73f8484b26db2573942186e7d918bba4"`
[INFO] [stderr]     Checking tutorial v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     return a + b
[INFO] [stderr]   |     ^^^^^^^^^^^^ help: remove `return` as shown: `a + b`
[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: unneeded return statement
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     return a + b
[INFO] [stderr]   |     ^^^^^^^^^^^^ help: remove `return` as shown: `a + b`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `"docker" "inspect" "19c4612a6f9421b834f9e96b5d8d614a73f8484b26db2573942186e7d918bba4"`
[INFO] running `"docker" "rm" "-f" "19c4612a6f9421b834f9e96b5d8d614a73f8484b26db2573942186e7d918bba4"`
[INFO] [stdout] 19c4612a6f9421b834f9e96b5d8d614a73f8484b26db2573942186e7d918bba4