[INFO] updating cached repository pietrocarbo/rust_first_steps [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/pietrocarbo/rust_first_steps [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/pietrocarbo/rust_first_steps" "work/ex/clippy-test-run/sources/stable/gh/pietrocarbo/rust_first_steps"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/pietrocarbo/rust_first_steps'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/pietrocarbo/rust_first_steps" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/pietrocarbo/rust_first_steps"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/pietrocarbo/rust_first_steps'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] ab44a82cc79245986e93b857b57d532f63df8a11 [INFO] sha for GitHub repo pietrocarbo/rust_first_steps: ab44a82cc79245986e93b857b57d532f63df8a11 [INFO] validating manifest of pietrocarbo/rust_first_steps 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 pietrocarbo/rust_first_steps 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 pietrocarbo/rust_first_steps [INFO] finished frobbing pietrocarbo/rust_first_steps [INFO] frobbed toml for pietrocarbo/rust_first_steps written to work/ex/clippy-test-run/sources/stable/gh/pietrocarbo/rust_first_steps/Cargo.toml [INFO] started frobbing pietrocarbo/rust_first_steps [INFO] finished frobbing pietrocarbo/rust_first_steps [INFO] frobbed toml for pietrocarbo/rust_first_steps written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/pietrocarbo/rust_first_steps/Cargo.toml [INFO] crate pietrocarbo/rust_first_steps 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 pietrocarbo/rust_first_steps 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/pietrocarbo/rust_first_steps:/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] e074f5b79094c6226631fae8bd4c32ec032c6c809b97ca2d4cedd1ef01bb9c0d [INFO] running `"docker" "start" "-a" "e074f5b79094c6226631fae8bd4c32ec032c6c809b97ca2d4cedd1ef01bb9c0d"` [INFO] [stderr] Checking presentation v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: function is never used: `file_parse_verbose` [INFO] [stderr] --> src/bin/3_error_IO.rs:12:1 [INFO] [stderr] | [INFO] [stderr] 12 | fn file_parse_verbose>(file_path: P) -> Result { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] warning: function is never used: `file_parse_verbose` [INFO] [stderr] --> src/bin/3_error_IO.rs:12:1 [INFO] [stderr] | [INFO] [stderr] 12 | fn file_parse_verbose>(file_path: P) -> Result { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: crate `3_error_IO` should have a snake case name such as `3_error_io` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(non_snake_case)] on by default [INFO] [stderr] [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: crate `3_error_IO` should have a snake case name such as `3_error_io` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(non_snake_case)] on by default [INFO] [stderr] [INFO] [stderr] warning: useless use of `format!` [INFO] [stderr] --> src/bin/1_linked_list.rs:31:17 [INFO] [stderr] | [INFO] [stderr] 31 | format!("Nil") [INFO] [stderr] | ^^^^^^^^^^^^^^ help: consider using .to_string(): `"Nil".to_string()` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::useless_format)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format [INFO] [stderr] [INFO] [stderr] warning: useless use of `format!` [INFO] [stderr] --> src/bin/1_linked_list.rs:31:17 [INFO] [stderr] | [INFO] [stderr] 31 | format!("Nil") [INFO] [stderr] | ^^^^^^^^^^^^^^ help: consider using .to_string(): `"Nil".to_string()` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::useless_format)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.19s [INFO] running `"docker" "inspect" "e074f5b79094c6226631fae8bd4c32ec032c6c809b97ca2d4cedd1ef01bb9c0d"` [INFO] running `"docker" "rm" "-f" "e074f5b79094c6226631fae8bd4c32ec032c6c809b97ca2d4cedd1ef01bb9c0d"` [INFO] [stdout] e074f5b79094c6226631fae8bd4c32ec032c6c809b97ca2d4cedd1ef01bb9c0d