[INFO] updating cached repository NjengaSaruni/RustDemo
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/NjengaSaruni/RustDemo
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/NjengaSaruni/RustDemo" "work/ex/clippy-test-run/sources/stable/gh/NjengaSaruni/RustDemo"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/NjengaSaruni/RustDemo'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/NjengaSaruni/RustDemo" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/NjengaSaruni/RustDemo"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/NjengaSaruni/RustDemo'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b549df7f68832d86c110e4f637c1d18db789568b
[INFO] sha for GitHub repo NjengaSaruni/RustDemo: b549df7f68832d86c110e4f637c1d18db789568b
[INFO] validating manifest of NjengaSaruni/RustDemo 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 NjengaSaruni/RustDemo 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 NjengaSaruni/RustDemo
[INFO] finished frobbing NjengaSaruni/RustDemo
[INFO] frobbed toml for NjengaSaruni/RustDemo written to work/ex/clippy-test-run/sources/stable/gh/NjengaSaruni/RustDemo/Cargo.toml
[INFO] started frobbing NjengaSaruni/RustDemo
[INFO] finished frobbing NjengaSaruni/RustDemo
[INFO] frobbed toml for NjengaSaruni/RustDemo written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/NjengaSaruni/RustDemo/Cargo.toml
[INFO] crate NjengaSaruni/RustDemo 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 NjengaSaruni/RustDemo 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/NjengaSaruni/RustDemo:/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] 7415fe38be014cb2356d4edcbb60f667a1f09515df8bc82c3a7c51d00197d6ac
[INFO] running `"docker" "start" "-a" "7415fe38be014cb2356d4edcbb60f667a1f09515df8bc82c3a7c51d00197d6ac"`
[INFO] [stderr]     Checking learn_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |         return 1;
[INFO] [stderr]    |         ^^^^^^^^^ help: remove `return` as shown: `1`
[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:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |         return fib(num - 1) + fib(num - 2);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `fib(num - 1) + fib(num - 2)`
[INFO] [stderr]    |
[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:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |         return 1;
[INFO] [stderr]    |         ^^^^^^^^^ help: remove `return` as shown: `1`
[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:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |         return fib(num - 1) + fib(num - 2);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `fib(num - 1) + fib(num - 2)`
[INFO] [stderr]    |
[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 0.73s
[INFO] running `"docker" "inspect" "7415fe38be014cb2356d4edcbb60f667a1f09515df8bc82c3a7c51d00197d6ac"`
[INFO] running `"docker" "rm" "-f" "7415fe38be014cb2356d4edcbb60f667a1f09515df8bc82c3a7c51d00197d6ac"`
[INFO] [stdout] 7415fe38be014cb2356d4edcbb60f667a1f09515df8bc82c3a7c51d00197d6ac