[INFO] updating cached repository ChalkPE/rust-playground [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/ChalkPE/rust-playground [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/ChalkPE/rust-playground" "work/ex/clippy-test-run/sources/stable/gh/ChalkPE/rust-playground"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/ChalkPE/rust-playground'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/ChalkPE/rust-playground" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ChalkPE/rust-playground"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ChalkPE/rust-playground'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] ce5291c7e5bf4ea81a07e761331e8985958ca714 [INFO] sha for GitHub repo ChalkPE/rust-playground: ce5291c7e5bf4ea81a07e761331e8985958ca714 [INFO] validating manifest of ChalkPE/rust-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 ChalkPE/rust-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 ChalkPE/rust-playground [INFO] finished frobbing ChalkPE/rust-playground [INFO] frobbed toml for ChalkPE/rust-playground written to work/ex/clippy-test-run/sources/stable/gh/ChalkPE/rust-playground/Cargo.toml [INFO] started frobbing ChalkPE/rust-playground [INFO] finished frobbing ChalkPE/rust-playground [INFO] frobbed toml for ChalkPE/rust-playground written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ChalkPE/rust-playground/Cargo.toml [INFO] crate ChalkPE/rust-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 ChalkPE/rust-playground against stable for clippy-test-run [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/ChalkPE/rust-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] b94536b957a46be1083fde4670de429363e484191200792cc6028b3d2ed029bf [INFO] running `"docker" "start" "-a" "b94536b957a46be1083fde4670de429363e484191200792cc6028b3d2ed029bf"` [INFO] [stderr] Checking playground v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices. [INFO] [stderr] --> src/main.rs:9:15 [INFO] [stderr] | [INFO] [stderr] 9 | fn mean(list: &Vec) -> f64 { [INFO] [stderr] | ^^^^^^^^^ help: change this to: `&[i32]` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::ptr_arg)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [INFO] [stderr] [INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change [INFO] [stderr] --> src/main.rs:11:5 [INFO] [stderr] | [INFO] [stderr] 11 | sum as f64 / list.len() as f64 [INFO] [stderr] | ^^^^^^^^^^ help: try: `f64::from(sum)` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::cast_lossless)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless [INFO] [stderr] [INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices. [INFO] [stderr] --> src/main.rs:19:15 [INFO] [stderr] | [INFO] [stderr] 19 | fn mode(list: &Vec) -> i32 { [INFO] [stderr] | ^^^^^^^^^ help: change this to: `&[i32]` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [INFO] [stderr] [INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices. [INFO] [stderr] --> src/main.rs:9:15 [INFO] [stderr] | [INFO] [stderr] 9 | fn mean(list: &Vec) -> f64 { [INFO] [stderr] | ^^^^^^^^^ help: change this to: `&[i32]` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::ptr_arg)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [INFO] [stderr] [INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change [INFO] [stderr] --> src/main.rs:11:5 [INFO] [stderr] | [INFO] [stderr] 11 | sum as f64 / list.len() as f64 [INFO] [stderr] | ^^^^^^^^^^ help: try: `f64::from(sum)` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::cast_lossless)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless [INFO] [stderr] [INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices. [INFO] [stderr] --> src/main.rs:19:15 [INFO] [stderr] | [INFO] [stderr] 19 | fn mode(list: &Vec) -> i32 { [INFO] [stderr] | ^^^^^^^^^ help: change this to: `&[i32]` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.70s [INFO] running `"docker" "inspect" "b94536b957a46be1083fde4670de429363e484191200792cc6028b3d2ed029bf"` [INFO] running `"docker" "rm" "-f" "b94536b957a46be1083fde4670de429363e484191200792cc6028b3d2ed029bf"` [INFO] [stdout] b94536b957a46be1083fde4670de429363e484191200792cc6028b3d2ed029bf