Dec 17 11:34:53.270 INFO checking yagince/programming-rust against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 11:34:53.270 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "-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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 11:34:53.756 INFO [stdout] 4cb68dc0f0a2228e631fcb0b41d98bf0d0e088b4aa2d55c5fb9b9aa554996ff3
Dec 17 11:34:53.758 INFO running `"docker" "start" "-a" "4cb68dc0f0a2228e631fcb0b41d98bf0d0e088b4aa2d55c5fb9b9aa554996ff3"`
Dec 17 11:34:56.602 INFO [stderr]     Checking samples v0.1.0 (/opt/crater/workdir)
Dec 17 11:34:57.037 INFO [stderr] warning: unused variable: `a_2`
Dec 17 11:34:57.038 INFO [stderr]  --> src/bin/4_3_copy.rs:6:9
Dec 17 11:34:57.038 INFO [stderr]   |
Dec 17 11:34:57.038 INFO [stderr] 6 |     let a_2 = a;
Dec 17 11:34:57.039 INFO [stderr]   |         ^^^ help: consider using `_a_2` instead
Dec 17 11:34:57.039 INFO [stderr]   |
Dec 17 11:34:57.039 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 17 11:34:57.039 INFO [stderr] 
Dec 17 11:34:57.172 INFO [stderr] warning: unused import: `std::io::Result`
Dec 17 11:34:57.172 INFO [stderr]  --> src/bin/6_4_1_if_let.rs:2:5
Dec 17 11:34:57.172 INFO [stderr]   |
Dec 17 11:34:57.172 INFO [stderr] 2 | use std::io::Result;
Dec 17 11:34:57.172 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 17 11:34:57.172 INFO [stderr]   |
Dec 17 11:34:57.180 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 11:34:57.180 INFO [stderr] 
Dec 17 11:34:57.702 INFO [stderr] warning: unused import: `std::io::Result`
Dec 17 11:34:57.703 INFO [stderr]  --> src/bin/6_4_1_if_let.rs:2:5
Dec 17 11:34:57.703 INFO [stderr]   |
Dec 17 11:34:57.703 INFO [stderr] 2 | use std::io::Result;
Dec 17 11:34:57.704 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 17 11:34:57.708 INFO [stderr] warning: unused variable: `t`
Dec 17 11:34:57.709 INFO [stderr]  --> src/bin/4_4_rc_arc.rs:9:9
Dec 17 11:34:57.709 INFO [stderr]   |
Dec 17 11:34:57.709 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
Dec 17 11:34:57.710 INFO [stderr]   |         ^ help: consider using `_t` instead
Dec 17 11:34:57.718 INFO [stderr]   |
Dec 17 11:34:57.723 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 11:34:57.723 INFO [stderr] 
Dec 17 11:34:57.728 INFO [stderr]   |
Dec 17 11:34:57.728 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 17 11:34:57.728 INFO [stderr] 
Dec 17 11:34:57.729 INFO [stderr] warning: unused variable: `u`
Dec 17 11:34:57.729 INFO [stderr]   --> src/bin/4_4_rc_arc.rs:10:9
Dec 17 11:34:57.729 INFO [stderr]    |
Dec 17 11:34:57.729 INFO [stderr] 10 |     let u = s.clone();
Dec 17 11:34:57.730 INFO [stderr]    |         ^ help: consider using `_u` instead
Dec 17 11:34:57.730 INFO [stderr] 
Dec 17 11:34:57.760 INFO [stderr] warning: unused variable: `aside`
Dec 17 11:34:57.760 INFO [stderr]   --> src/bin/5_3_share_refenrence.rs:11:9
Dec 17 11:34:57.760 INFO [stderr]    |
Dec 17 11:34:57.760 INFO [stderr] 11 |     let aside = v;
Dec 17 11:34:57.760 INFO [stderr]    |         ^^^^^ help: consider using `_aside` instead
Dec 17 11:34:57.762 INFO [stderr] warning: variable does not need to be mutable
Dec 17 11:34:57.762 INFO [stderr]  --> src/bin/4_4_rc_arc.rs:7:9
Dec 17 11:34:57.762 INFO [stderr]   |
Dec 17 11:34:57.762 INFO [stderr] 7 |     let mut s = Rc::new("hoge".to_string());
Dec 17 11:34:57.762 INFO [stderr]   |         ----^
Dec 17 11:34:57.762 INFO [stderr]   |         |
Dec 17 11:34:57.762 INFO [stderr]   |         help: remove this `mut`
Dec 17 11:34:57.762 INFO [stderr]   |
Dec 17 11:34:57.762 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 17 11:34:57.762 INFO [stderr] 
Dec 17 11:34:57.764 INFO [stderr]    |
Dec 17 11:34:57.764 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 11:34:57.764 INFO [stderr] 
Dec 17 11:34:57.765 INFO [stderr] warning: unused variable: `r1`
Dec 17 11:34:57.765 INFO [stderr]   --> src/bin/5_3_share_refenrence.rs:28:9
Dec 17 11:34:57.765 INFO [stderr]    |
Dec 17 11:34:57.765 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
Dec 17 11:34:57.765 INFO [stderr]    |         ^^ help: consider using `_r1` instead
Dec 17 11:34:57.765 INFO [stderr] 
Dec 17 11:34:57.976 INFO [stderr] warning: unused variable: `a_2`
Dec 17 11:34:57.980 INFO [stderr]  --> src/bin/4_3_copy.rs:6:9
Dec 17 11:34:57.980 INFO [stderr]   |
Dec 17 11:34:57.980 INFO [stderr] 6 |     let a_2 = a;
Dec 17 11:34:57.980 INFO [stderr]   |         ^^^ help: consider using `_a_2` instead
Dec 17 11:34:58.001 INFO [stderr]   |
Dec 17 11:34:58.001 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 17 11:34:58.001 INFO [stderr] 
Dec 17 11:34:58.144 INFO [stderr] warning: unused variable: `t`
Dec 17 11:34:58.144 INFO [stderr]  --> src/bin/4_4_rc_arc.rs:9:9
Dec 17 11:34:58.144 INFO [stderr]   |
Dec 17 11:34:58.144 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
Dec 17 11:34:58.144 INFO [stderr]   |         ^ help: consider using `_t` instead
Dec 17 11:34:58.185 INFO [stderr]   |
Dec 17 11:34:58.185 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 17 11:34:58.185 INFO [stderr] 
Dec 17 11:34:58.188 INFO [stderr] warning: unused variable: `u`
Dec 17 11:34:58.188 INFO [stderr]   --> src/bin/4_4_rc_arc.rs:10:9
Dec 17 11:34:58.188 INFO [stderr]    |
Dec 17 11:34:58.188 INFO [stderr] 10 |     let u = s.clone();
Dec 17 11:34:58.188 INFO [stderr]    |         ^ help: consider using `_u` instead
Dec 17 11:34:58.188 INFO [stderr] 
Dec 17 11:34:58.208 INFO [stderr] warning: variable does not need to be mutable
Dec 17 11:34:58.208 INFO [stderr]  --> src/bin/4_4_rc_arc.rs:7:9
Dec 17 11:34:58.208 INFO [stderr]   |
Dec 17 11:34:58.208 INFO [stderr] 7 |     let mut s = Rc::new("hoge".to_string());
Dec 17 11:34:58.208 INFO [stderr]   |         ----^
Dec 17 11:34:58.208 INFO [stderr]   |         |
Dec 17 11:34:58.208 INFO [stderr]   |         help: remove this `mut`
Dec 17 11:34:58.208 INFO [stderr]   |
Dec 17 11:34:58.208 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 17 11:34:58.208 INFO [stderr] 
Dec 17 11:34:58.392 INFO [stderr] warning: field is never used: `y`
Dec 17 11:34:58.392 INFO [stderr]  --> src/bin/5_2_6_lifetime_parameter.rs:3:5
Dec 17 11:34:58.392 INFO [stderr]   |
Dec 17 11:34:58.392 INFO [stderr] 3 |     y: &'b i32,
Dec 17 11:34:58.392 INFO [stderr]   |     ^^^^^^^^^^
Dec 17 11:34:58.392 INFO [stderr]   |
Dec 17 11:34:58.392 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 11:34:58.392 INFO [stderr] 
Dec 17 11:34:58.416 INFO [stderr] warning: field is never used: `y`
Dec 17 11:34:58.416 INFO [stderr]  --> src/bin/5_2_6_lifetime_parameter.rs:3:5
Dec 17 11:34:58.416 INFO [stderr]   |
Dec 17 11:34:58.416 INFO [stderr] 3 |     y: &'b i32,
Dec 17 11:34:58.416 INFO [stderr]   |     ^^^^^^^^^^
Dec 17 11:34:58.416 INFO [stderr]   |
Dec 17 11:34:58.416 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 11:34:58.416 INFO [stderr] 
Dec 17 11:34:58.668 INFO [stderr] warning: unused variable: `aside`
Dec 17 11:34:58.668 INFO [stderr]   --> src/bin/5_3_share_refenrence.rs:11:9
Dec 17 11:34:58.668 INFO [stderr]    |
Dec 17 11:34:58.668 INFO [stderr] 11 |     let aside = v;
Dec 17 11:34:58.668 INFO [stderr]    |         ^^^^^ help: consider using `_aside` instead
Dec 17 11:34:58.668 INFO [stderr]    |
Dec 17 11:34:58.668 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 11:34:58.668 INFO [stderr] 
Dec 17 11:34:58.668 INFO [stderr] warning: unused variable: `r1`
Dec 17 11:34:58.668 INFO [stderr]   --> src/bin/5_3_share_refenrence.rs:28:9
Dec 17 11:34:58.668 INFO [stderr]    |
Dec 17 11:34:58.668 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
Dec 17 11:34:58.668 INFO [stderr]    |         ^^ help: consider using `_r1` instead
Dec 17 11:34:58.668 INFO [stderr] 
Dec 17 11:34:58.772 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.19s
Dec 17 11:34:59.540 INFO running `"docker" "inspect" "4cb68dc0f0a2228e631fcb0b41d98bf0d0e088b4aa2d55c5fb9b9aa554996ff3"`
Dec 17 11:34:59.850 INFO running `"docker" "rm" "-f" "4cb68dc0f0a2228e631fcb0b41d98bf0d0e088b4aa2d55c5fb9b9aa554996ff3"`
Dec 17 11:35:00.167 INFO [stdout] 4cb68dc0f0a2228e631fcb0b41d98bf0d0e088b4aa2d55c5fb9b9aa554996ff3