[INFO] updating cached repository yagince/programming-rust [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/yagince/programming-rust [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/yagince/programming-rust" "work/ex/clippy-test-run/sources/stable/gh/yagince/programming-rust"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/yagince/programming-rust'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/yagince/programming-rust" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/yagince/programming-rust"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/yagince/programming-rust'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 2fb11ea3e31e1d7584b541293cb56108d4b4ac0f [INFO] sha for GitHub repo yagince/programming-rust: 2fb11ea3e31e1d7584b541293cb56108d4b4ac0f [INFO] validating manifest of yagince/programming-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 yagince/programming-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 yagince/programming-rust [INFO] finished frobbing yagince/programming-rust [INFO] frobbed toml for yagince/programming-rust written to work/ex/clippy-test-run/sources/stable/gh/yagince/programming-rust/Cargo.toml [INFO] started frobbing yagince/programming-rust [INFO] finished frobbing yagince/programming-rust [INFO] frobbed toml for yagince/programming-rust written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/yagince/programming-rust/Cargo.toml [INFO] crate yagince/programming-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 yagince/programming-rust against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/yagince/programming-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 -Dclippy::into_iter_on_array" "-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] c81bc4ab16aeeab2202a9ddd623529de52a4dc28be387112b2e221539d6eb7b2 [INFO] running `"docker" "start" "-a" "c81bc4ab16aeeab2202a9ddd623529de52a4dc28be387112b2e221539d6eb7b2"` [INFO] [stderr] Checking samples v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: field is never used: `y` [INFO] [stderr] --> src/bin/5_2_6_lifetime_parameter.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | y: &'b i32, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value [INFO] [stderr] --> src/bin/5_2_2_references_static.rs:17:9 [INFO] [stderr] | [INFO] [stderr] 17 | fn f(p: &'static i32) { [INFO] [stderr] | ^^^^^^^^^^^^ help: consider passing by value instead: `i32` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io::Result` [INFO] [stderr] --> src/bin/6_4_1_if_let.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::io::Result; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/bin/4_4_rc_arc.rs:9:9 [INFO] [stderr] | [INFO] [stderr] 9 | let t = s.clone(); // cloneすると参照カウントがインクリメントされるが実際はコピーされない [INFO] [stderr] | ^ help: consider using `_t` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `u` [INFO] [stderr] --> src/bin/4_4_rc_arc.rs:10:9 [INFO] [stderr] | [INFO] [stderr] 10 | let u = s.clone(); [INFO] [stderr] | ^ help: consider using `_u` instead [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/4_4_rc_arc.rs:7:9 [INFO] [stderr] | [INFO] [stderr] 7 | let mut s = Rc::new("hoge".to_string()); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `aside` [INFO] [stderr] --> src/bin/5_3_share_refenrence.rs:11:9 [INFO] [stderr] | [INFO] [stderr] 11 | let aside = v; [INFO] [stderr] | ^^^^^ help: consider using `_aside` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r1` [INFO] [stderr] --> src/bin/5_3_share_refenrence.rs:28:9 [INFO] [stderr] | [INFO] [stderr] 28 | let r1 = &mut r.1; // 可変参照から可変参照の再借用は出来る [INFO] [stderr] | ^^ help: consider using `_r1` instead [INFO] [stderr] [INFO] [stderr] warning: statement with no effect [INFO] [stderr] --> src/bin/5_3_share_refenrence.rs:9:9 [INFO] [stderr] | [INFO] [stderr] 9 | r[0]; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::no_effect)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#no_effect [INFO] [stderr] [INFO] [stderr] warning: unused variable: `aside` [INFO] [stderr] --> src/bin/5_3_share_refenrence.rs:11:9 [INFO] [stderr] | [INFO] [stderr] 11 | let aside = v; [INFO] [stderr] | ^^^^^ help: consider using `_aside` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r1` [INFO] [stderr] --> src/bin/5_3_share_refenrence.rs:28:9 [INFO] [stderr] | [INFO] [stderr] 28 | let r1 = &mut r.1; // 可変参照から可変参照の再借用は出来る [INFO] [stderr] | ^^ help: consider using `_r1` instead [INFO] [stderr] [INFO] [stderr] warning: statement with no effect [INFO] [stderr] --> src/bin/5_3_share_refenrence.rs:9:9 [INFO] [stderr] | [INFO] [stderr] 9 | r[0]; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::no_effect)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#no_effect [INFO] [stderr] [INFO] [stderr] warning: field is never used: `y` [INFO] [stderr] --> src/bin/5_2_6_lifetime_parameter.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | y: &'b i32, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io::Result` [INFO] [stderr] --> src/bin/6_4_1_if_let.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::io::Result; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a_2` [INFO] [stderr] --> src/bin/4_3_copy.rs:6:9 [INFO] [stderr] | [INFO] [stderr] 6 | let a_2 = a; [INFO] [stderr] | ^^^ help: consider using `_a_2` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/bin/4_4_rc_arc.rs:9:9 [INFO] [stderr] | [INFO] [stderr] 9 | let t = s.clone(); // cloneすると参照カウントがインクリメントされるが実際はコピーされない [INFO] [stderr] | ^ help: consider using `_t` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `u` [INFO] [stderr] --> src/bin/4_4_rc_arc.rs:10:9 [INFO] [stderr] | [INFO] [stderr] 10 | let u = s.clone(); [INFO] [stderr] | ^ help: consider using `_u` instead [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/4_4_rc_arc.rs:7:9 [INFO] [stderr] | [INFO] [stderr] 7 | let mut s = Rc::new("hoge".to_string()); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value [INFO] [stderr] --> src/bin/5_2_2_references_static.rs:17:9 [INFO] [stderr] | [INFO] [stderr] 17 | fn f(p: &'static i32) { [INFO] [stderr] | ^^^^^^^^^^^^ help: consider passing by value instead: `i32` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a_2` [INFO] [stderr] --> src/bin/4_3_copy.rs:6:9 [INFO] [stderr] | [INFO] [stderr] 6 | let a_2 = a; [INFO] [stderr] | ^^^ help: consider using `_a_2` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 5.08s [INFO] running `"docker" "inspect" "c81bc4ab16aeeab2202a9ddd623529de52a4dc28be387112b2e221539d6eb7b2"` [INFO] running `"docker" "rm" "-f" "c81bc4ab16aeeab2202a9ddd623529de52a4dc28be387112b2e221539d6eb7b2"` [INFO] [stdout] c81bc4ab16aeeab2202a9ddd623529de52a4dc28be387112b2e221539d6eb7b2