Dec 19 05:11:42.445 INFO checking yagince/programming-rust against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 05:11:42.445 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 05:11:42.950 INFO [stdout] 2bea8730b20808a003569c3874f6ca022a3938b0acb497b75e598de870858279
Dec 19 05:11:42.952 INFO running `"docker" "start" "-a" "2bea8730b20808a003569c3874f6ca022a3938b0acb497b75e598de870858279"`
Dec 19 05:11:46.154 INFO [stderr]     Checking samples v0.1.0 (/opt/crater/workdir)
Dec 19 05:11:46.584 INFO [stderr] warning: unused import: `std::io::Result`
Dec 19 05:11:46.585 INFO [stderr]  --> src/bin/6_4_1_if_let.rs:2:5
Dec 19 05:11:46.585 INFO [stderr]   |
Dec 19 05:11:46.585 INFO [stderr] 2 | use std::io::Result;
Dec 19 05:11:46.585 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 19 05:11:46.632 INFO [stderr]   |
Dec 19 05:11:46.633 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 05:11:46.633 INFO [stderr] 
Dec 19 05:11:46.652 INFO [stderr] warning: unused import: `std::io::Result`
Dec 19 05:11:46.652 INFO [stderr]  --> src/bin/6_4_1_if_let.rs:2:5
Dec 19 05:11:46.652 INFO [stderr]   |
Dec 19 05:11:46.652 INFO [stderr] 2 | use std::io::Result;
Dec 19 05:11:46.652 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 19 05:11:46.656 INFO [stderr]   |
Dec 19 05:11:46.656 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 05:11:46.656 INFO [stderr] 
Dec 19 05:11:46.786 INFO [stderr] warning: field is never used: `y`
Dec 19 05:11:46.786 INFO [stderr]  --> src/bin/5_2_6_lifetime_parameter.rs:3:5
Dec 19 05:11:46.786 INFO [stderr]   |
Dec 19 05:11:46.786 INFO [stderr] 3 |     y: &'b i32,
Dec 19 05:11:46.786 INFO [stderr]   |     ^^^^^^^^^^
Dec 19 05:11:46.786 INFO [stderr]   |
Dec 19 05:11:46.786 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 05:11:46.786 INFO [stderr] 
Dec 19 05:11:46.794 INFO [stderr] warning: unused variable: `t`
Dec 19 05:11:46.794 INFO [stderr]  --> src/bin/4_4_rc_arc.rs:9:9
Dec 19 05:11:46.794 INFO [stderr]   |
Dec 19 05:11:46.794 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 19 05:11:46.794 INFO [stderr]   |         ^ help: consider using `_t` instead
Dec 19 05:11:46.812 INFO [stderr]   |
Dec 19 05:11:46.812 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 19 05:11:46.812 INFO [stderr] 
Dec 19 05:11:46.812 INFO [stderr] warning: unused variable: `u`
Dec 19 05:11:46.813 INFO [stderr]   --> src/bin/4_4_rc_arc.rs:10:9
Dec 19 05:11:46.813 INFO [stderr]    |
Dec 19 05:11:46.813 INFO [stderr] 10 |     let u = s.clone();
Dec 19 05:11:46.813 INFO [stderr]    |         ^ help: consider using `_u` instead
Dec 19 05:11:46.813 INFO [stderr] 
Dec 19 05:11:46.840 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:11:46.840 INFO [stderr]  --> src/bin/4_4_rc_arc.rs:7:9
Dec 19 05:11:46.840 INFO [stderr]   |
Dec 19 05:11:46.841 INFO [stderr] 7 |     let mut s = Rc::new("hoge".to_string());
Dec 19 05:11:46.841 INFO [stderr]   |         ----^
Dec 19 05:11:46.841 INFO [stderr]   |         |
Dec 19 05:11:46.841 INFO [stderr]   |         help: remove this `mut`
Dec 19 05:11:46.848 INFO [stderr]   |
Dec 19 05:11:46.849 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 19 05:11:46.849 INFO [stderr] 
Dec 19 05:11:46.940 INFO [stderr] warning: unused variable: `aside`
Dec 19 05:11:46.940 INFO [stderr]   --> src/bin/5_3_share_refenrence.rs:11:9
Dec 19 05:11:46.940 INFO [stderr]    |
Dec 19 05:11:46.940 INFO [stderr] 11 |     let aside = v;
Dec 19 05:11:46.940 INFO [stderr]    |         ^^^^^ help: consider using `_aside` instead
Dec 19 05:11:46.940 INFO [stderr]    |
Dec 19 05:11:46.940 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 05:11:46.940 INFO [stderr] 
Dec 19 05:11:46.940 INFO [stderr] warning: unused variable: `r1`
Dec 19 05:11:46.940 INFO [stderr]   --> src/bin/5_3_share_refenrence.rs:28:9
Dec 19 05:11:46.940 INFO [stderr]    |
Dec 19 05:11:46.940 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 19 05:11:46.940 INFO [stderr]    |         ^^ help: consider using `_r1` instead
Dec 19 05:11:46.940 INFO [stderr] 
Dec 19 05:11:47.456 INFO [stderr] warning: field is never used: `y`
Dec 19 05:11:47.456 INFO [stderr]  --> src/bin/5_2_6_lifetime_parameter.rs:3:5
Dec 19 05:11:47.456 INFO [stderr]   |
Dec 19 05:11:47.456 INFO [stderr] 3 |     y: &'b i32,
Dec 19 05:11:47.456 INFO [stderr]   |     ^^^^^^^^^^
Dec 19 05:11:47.456 INFO [stderr]   |
Dec 19 05:11:47.456 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 05:11:47.456 INFO [stderr] 
Dec 19 05:11:47.996 INFO [stderr] warning: unused variable: `a_2`
Dec 19 05:11:47.996 INFO [stderr]  --> src/bin/4_3_copy.rs:6:9
Dec 19 05:11:47.996 INFO [stderr]   |
Dec 19 05:11:47.996 INFO [stderr] 6 |     let a_2 = a;
Dec 19 05:11:47.996 INFO [stderr]   |         ^^^ help: consider using `_a_2` instead
Dec 19 05:11:47.996 INFO [stderr]   |
Dec 19 05:11:47.996 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 19 05:11:47.996 INFO [stderr] 
Dec 19 05:11:48.008 INFO [stderr] warning: unused variable: `aside`
Dec 19 05:11:48.008 INFO [stderr]   --> src/bin/5_3_share_refenrence.rs:11:9
Dec 19 05:11:48.008 INFO [stderr]    |
Dec 19 05:11:48.008 INFO [stderr] 11 |     let aside = v;
Dec 19 05:11:48.008 INFO [stderr]    |         ^^^^^ help: consider using `_aside` instead
Dec 19 05:11:48.008 INFO [stderr]    |
Dec 19 05:11:48.008 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 05:11:48.008 INFO [stderr] 
Dec 19 05:11:48.008 INFO [stderr] warning: unused variable: `r1`
Dec 19 05:11:48.008 INFO [stderr]   --> src/bin/5_3_share_refenrence.rs:28:9
Dec 19 05:11:48.008 INFO [stderr]    |
Dec 19 05:11:48.008 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 19 05:11:48.008 INFO [stderr]    |         ^^ help: consider using `_r1` instead
Dec 19 05:11:48.008 INFO [stderr] 
Dec 19 05:11:48.068 INFO [stderr] warning: unused variable: `a_2`
Dec 19 05:11:48.068 INFO [stderr]  --> src/bin/4_3_copy.rs:6:9
Dec 19 05:11:48.068 INFO [stderr]   |
Dec 19 05:11:48.069 INFO [stderr] 6 |     let a_2 = a;
Dec 19 05:11:48.069 INFO [stderr]   |         ^^^ help: consider using `_a_2` instead
Dec 19 05:11:48.069 INFO [stderr]   |
Dec 19 05:11:48.069 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 19 05:11:48.069 INFO [stderr] 
Dec 19 05:11:48.424 INFO [stderr] warning: unused variable: `t`
Dec 19 05:11:48.424 INFO [stderr]  --> src/bin/4_4_rc_arc.rs:9:9
Dec 19 05:11:48.428 INFO [stderr]   |
Dec 19 05:11:48.428 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 19 05:11:48.428 INFO [stderr]   |         ^ help: consider using `_t` instead
Dec 19 05:11:48.428 INFO [stderr]   |
Dec 19 05:11:48.428 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 19 05:11:48.428 INFO [stderr] 
Dec 19 05:11:48.428 INFO [stderr] warning: unused variable: `u`
Dec 19 05:11:48.428 INFO [stderr]   --> src/bin/4_4_rc_arc.rs:10:9
Dec 19 05:11:48.428 INFO [stderr]    |
Dec 19 05:11:48.428 INFO [stderr] 10 |     let u = s.clone();
Dec 19 05:11:48.428 INFO [stderr]    |         ^ help: consider using `_u` instead
Dec 19 05:11:48.428 INFO [stderr] 
Dec 19 05:11:48.455 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:11:48.455 INFO [stderr]  --> src/bin/4_4_rc_arc.rs:7:9
Dec 19 05:11:48.455 INFO [stderr]   |
Dec 19 05:11:48.455 INFO [stderr] 7 |     let mut s = Rc::new("hoge".to_string());
Dec 19 05:11:48.455 INFO [stderr]   |         ----^
Dec 19 05:11:48.455 INFO [stderr]   |         |
Dec 19 05:11:48.455 INFO [stderr]   |         help: remove this `mut`
Dec 19 05:11:48.455 INFO [stderr]   |
Dec 19 05:11:48.455 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 19 05:11:48.455 INFO [stderr] 
Dec 19 05:11:48.805 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.67s
Dec 19 05:11:49.974 INFO running `"docker" "inspect" "2bea8730b20808a003569c3874f6ca022a3938b0acb497b75e598de870858279"`
Dec 19 05:11:50.300 INFO running `"docker" "rm" "-f" "2bea8730b20808a003569c3874f6ca022a3938b0acb497b75e598de870858279"`
Dec 19 05:11:50.648 INFO [stdout] 2bea8730b20808a003569c3874f6ca022a3938b0acb497b75e598de870858279