Dec 04 23:21:18.043 INFO checking YoshikuniJujo/learn_rust against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 23:21:18.043 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 23:21:18.313 INFO [stdout] 105a053ae51af7591fb5db8b8b8c4ac278a185dde79134e1e3ba355ce2353f0f
Dec 04 23:21:18.316 INFO running `"docker" "start" "-a" "105a053ae51af7591fb5db8b8b8c4ac278a185dde79134e1e3ba355ce2353f0f"`
Dec 04 23:21:18.835 INFO [stderr] usermod: no changes
Dec 04 23:21:18.927 INFO [stderr]     Checking learn_rust v0.1.0 (/source)
Dec 04 23:21:20.427 INFO [stderr] warning: function is never used: `foo`
Dec 04 23:21:20.427 INFO [stderr]   --> src/ownership.rs:26:1
Dec 04 23:21:20.427 INFO [stderr]    |
Dec 04 23:21:20.427 INFO [stderr] 26 | fn foo(v: Vec<i32>) -> Vec<i32> {
Dec 04 23:21:20.427 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 23:21:20.427 INFO [stderr]    |
Dec 04 23:21:20.427 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 23:21:20.427 INFO [stderr] 
Dec 04 23:21:20.708 INFO [stderr] warning: value assigned to `x` is never read
Dec 04 23:21:20.708 INFO [stderr]  --> src/mutability.rs:9:10
Dec 04 23:21:20.708 INFO [stderr]   |
Dec 04 23:21:20.708 INFO [stderr] 9 |     let mut x = 5;
Dec 04 23:21:20.709 INFO [stderr]   |             ^
Dec 04 23:21:20.710 INFO [stderr]   |
Dec 04 23:21:20.710 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 04 23:21:20.711 INFO [stderr] 
Dec 04 23:21:20.711 INFO [stderr] warning: variable `y` is assigned to, but never used
Dec 04 23:21:20.711 INFO [stderr]   --> src/mutability.rs:13:10
Dec 04 23:21:20.712 INFO [stderr]    |
Dec 04 23:21:20.712 INFO [stderr] 13 |     let mut y = &mut x;
Dec 04 23:21:20.712 INFO [stderr]    |             ^
Dec 04 23:21:20.713 INFO [stderr]    |
Dec 04 23:21:20.713 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 23:21:20.713 INFO [stderr]    = note: consider using `_y` instead
Dec 04 23:21:20.713 INFO [stderr] 
Dec 04 23:21:20.713 INFO [stderr] warning: value assigned to `y` is never read
Dec 04 23:21:20.714 INFO [stderr]   --> src/mutability.rs:14:2
Dec 04 23:21:20.714 INFO [stderr]    |
Dec 04 23:21:20.714 INFO [stderr] 14 |     y = &mut z;
Dec 04 23:21:20.714 INFO [stderr]    |     ^
Dec 04 23:21:20.715 INFO [stderr] 
Dec 04 23:21:20.715 INFO [stderr] warning: field is never used: `x`
Dec 04 23:21:20.715 INFO [stderr]  --> src/mutability.rs:4:2
Dec 04 23:21:20.715 INFO [stderr]   |
Dec 04 23:21:20.716 INFO [stderr] 4 |     x: i32,
Dec 04 23:21:20.716 INFO [stderr]   |     ^^^^^^
Dec 04 23:21:20.723 INFO [stderr]   |
Dec 04 23:21:20.723 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 23:21:20.723 INFO [stderr] 
Dec 04 23:21:22.455 INFO [stderr] warning: value assigned to `x` is never read
Dec 04 23:21:22.455 INFO [stderr]  --> src/mutability.rs:9:10
Dec 04 23:21:22.455 INFO [stderr]   |
Dec 04 23:21:22.455 INFO [stderr] 9 |     let mut x = 5;
Dec 04 23:21:22.455 INFO [stderr]   |             ^
Dec 04 23:21:22.465 INFO [stderr]   |
Dec 04 23:21:22.465 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 04 23:21:22.465 INFO [stderr] 
Dec 04 23:21:22.465 INFO [stderr] warning: variable `y` is assigned to, but never used
Dec 04 23:21:22.465 INFO [stderr]   --> src/mutability.rs:13:10
Dec 04 23:21:22.465 INFO [stderr]    |
Dec 04 23:21:22.466 INFO [stderr] 13 |     let mut y = &mut x;
Dec 04 23:21:22.466 INFO [stderr]    |             ^
Dec 04 23:21:22.466 INFO [stderr]    |
Dec 04 23:21:22.466 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 23:21:22.466 INFO [stderr]    = note: consider using `_y` instead
Dec 04 23:21:22.466 INFO [stderr] 
Dec 04 23:21:22.466 INFO [stderr] warning: value assigned to `y` is never read
Dec 04 23:21:22.466 INFO [stderr]   --> src/mutability.rs:14:2
Dec 04 23:21:22.466 INFO [stderr]    |
Dec 04 23:21:22.466 INFO [stderr] 14 |     y = &mut z;
Dec 04 23:21:22.466 INFO [stderr]    |     ^
Dec 04 23:21:22.466 INFO [stderr] 
Dec 04 23:21:22.467 INFO [stderr] warning: field is never used: `x`
Dec 04 23:21:22.467 INFO [stderr]  --> src/mutability.rs:4:2
Dec 04 23:21:22.467 INFO [stderr]   |
Dec 04 23:21:22.467 INFO [stderr] 4 |     x: i32,
Dec 04 23:21:22.467 INFO [stderr]   |     ^^^^^^
Dec 04 23:21:22.472 INFO [stderr]   |
Dec 04 23:21:22.472 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 23:21:22.472 INFO [stderr] 
Dec 04 23:21:24.220 INFO [stderr] warning: function is never used: `foo`
Dec 04 23:21:24.220 INFO [stderr]   --> src/ownership.rs:26:1
Dec 04 23:21:24.220 INFO [stderr]    |
Dec 04 23:21:24.220 INFO [stderr] 26 | fn foo(v: Vec<i32>) -> Vec<i32> {
Dec 04 23:21:24.220 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 23:21:24.220 INFO [stderr]    |
Dec 04 23:21:24.220 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 23:21:24.220 INFO [stderr] 
Dec 04 23:21:24.406 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.52s
Dec 04 23:21:24.409 INFO [stderr] su: No module specific data is present
Dec 04 23:21:24.821 INFO running `"docker" "inspect" "105a053ae51af7591fb5db8b8b8c4ac278a185dde79134e1e3ba355ce2353f0f"`
Dec 04 23:21:24.957 INFO running `"docker" "rm" "-f" "105a053ae51af7591fb5db8b8b8c4ac278a185dde79134e1e3ba355ce2353f0f"`
Dec 04 23:21:25.120 INFO [stdout] 105a053ae51af7591fb5db8b8b8c4ac278a185dde79134e1e3ba355ce2353f0f