Dec 04 23:21:18.045 INFO checking YoshikuniJujo/learn_rust against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 23:21:18.045 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 23:21:18.235 INFO [stdout] 8d69f894841941877cc33a0c4522c778edc53ac3bbfdaa65f776f93a9eb3ff18
Dec 04 23:21:18.237 INFO running `"docker" "start" "-a" "8d69f894841941877cc33a0c4522c778edc53ac3bbfdaa65f776f93a9eb3ff18"`
Dec 04 23:21:18.758 INFO [stderr] usermod: no changes
Dec 04 23:21:18.807 INFO [stderr]     Checking learn_rust v0.1.0 (/source)
Dec 04 23:21:21.747 INFO [stderr] warning: value assigned to `x` is never read
Dec 04 23:21:21.747 INFO [stderr]  --> src/mutability.rs:9:10
Dec 04 23:21:21.748 INFO [stderr]   |
Dec 04 23:21:21.748 INFO [stderr] 9 |     let mut x = 5;
Dec 04 23:21:21.748 INFO [stderr]   |             ^
Dec 04 23:21:21.748 INFO [stderr]   |
Dec 04 23:21:21.749 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 04 23:21:21.749 INFO [stderr] 
Dec 04 23:21:21.749 INFO [stderr] warning: variable `y` is assigned to, but never used
Dec 04 23:21:21.749 INFO [stderr]   --> src/mutability.rs:13:10
Dec 04 23:21:21.749 INFO [stderr]    |
Dec 04 23:21:21.750 INFO [stderr] 13 |     let mut y = &mut x;
Dec 04 23:21:21.750 INFO [stderr]    |             ^
Dec 04 23:21:21.750 INFO [stderr]    |
Dec 04 23:21:21.750 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 23:21:21.751 INFO [stderr]    = note: consider using `_y` instead
Dec 04 23:21:21.751 INFO [stderr] 
Dec 04 23:21:21.751 INFO [stderr] warning: value assigned to `y` is never read
Dec 04 23:21:21.751 INFO [stderr]   --> src/mutability.rs:14:2
Dec 04 23:21:21.751 INFO [stderr]    |
Dec 04 23:21:21.752 INFO [stderr] 14 |     y = &mut z;
Dec 04 23:21:21.752 INFO [stderr]    |     ^
Dec 04 23:21:21.752 INFO [stderr] 
Dec 04 23:21:21.752 INFO [stderr] warning: field is never used: `x`
Dec 04 23:21:21.753 INFO [stderr]  --> src/mutability.rs:4:2
Dec 04 23:21:21.753 INFO [stderr]   |
Dec 04 23:21:21.753 INFO [stderr] 4 |     x: i32,
Dec 04 23:21:21.753 INFO [stderr]   |     ^^^^^^
Dec 04 23:21:21.754 INFO [stderr]   |
Dec 04 23:21:21.754 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 23:21:21.754 INFO [stderr] 
Dec 04 23:21:22.451 INFO [stderr] warning: function is never used: `foo`
Dec 04 23:21:22.451 INFO [stderr]   --> src/ownership.rs:26:1
Dec 04 23:21:22.451 INFO [stderr]    |
Dec 04 23:21:22.451 INFO [stderr] 26 | fn foo(v: Vec<i32>) -> Vec<i32> {
Dec 04 23:21:22.451 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 23:21:22.451 INFO [stderr]    |
Dec 04 23:21:22.451 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 23:21:22.451 INFO [stderr] 
Dec 04 23:21:23.167 INFO [stderr] warning: function is never used: `foo`
Dec 04 23:21:23.167 INFO [stderr]   --> src/ownership.rs:26:1
Dec 04 23:21:23.167 INFO [stderr]    |
Dec 04 23:21:23.167 INFO [stderr] 26 | fn foo(v: Vec<i32>) -> Vec<i32> {
Dec 04 23:21:23.167 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 23:21:23.167 INFO [stderr]    |
Dec 04 23:21:23.167 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 23:21:23.167 INFO [stderr] 
Dec 04 23:21:24.054 INFO [stderr] warning: value assigned to `x` is never read
Dec 04 23:21:24.054 INFO [stderr]  --> src/mutability.rs:9:10
Dec 04 23:21:24.054 INFO [stderr]   |
Dec 04 23:21:24.054 INFO [stderr] 9 |     let mut x = 5;
Dec 04 23:21:24.054 INFO [stderr]   |             ^
Dec 04 23:21:24.054 INFO [stderr]   |
Dec 04 23:21:24.054 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 04 23:21:24.054 INFO [stderr] 
Dec 04 23:21:24.054 INFO [stderr] warning: variable `y` is assigned to, but never used
Dec 04 23:21:24.054 INFO [stderr]   --> src/mutability.rs:13:10
Dec 04 23:21:24.054 INFO [stderr]    |
Dec 04 23:21:24.054 INFO [stderr] 13 |     let mut y = &mut x;
Dec 04 23:21:24.054 INFO [stderr]    |             ^
Dec 04 23:21:24.054 INFO [stderr]    |
Dec 04 23:21:24.054 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 23:21:24.054 INFO [stderr]    = note: consider using `_y` instead
Dec 04 23:21:24.054 INFO [stderr] 
Dec 04 23:21:24.054 INFO [stderr] warning: value assigned to `y` is never read
Dec 04 23:21:24.054 INFO [stderr]   --> src/mutability.rs:14:2
Dec 04 23:21:24.054 INFO [stderr]    |
Dec 04 23:21:24.054 INFO [stderr] 14 |     y = &mut z;
Dec 04 23:21:24.054 INFO [stderr]    |     ^
Dec 04 23:21:24.054 INFO [stderr] 
Dec 04 23:21:24.054 INFO [stderr] warning: field is never used: `x`
Dec 04 23:21:24.054 INFO [stderr]  --> src/mutability.rs:4:2
Dec 04 23:21:24.054 INFO [stderr]   |
Dec 04 23:21:24.054 INFO [stderr] 4 |     x: i32,
Dec 04 23:21:24.054 INFO [stderr]   |     ^^^^^^
Dec 04 23:21:24.054 INFO [stderr]   |
Dec 04 23:21:24.054 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 23:21:24.054 INFO [stderr] 
Dec 04 23:21:24.405 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.63s
Dec 04 23:21:24.409 INFO [stderr] su: No module specific data is present
Dec 04 23:21:24.789 INFO running `"docker" "inspect" "8d69f894841941877cc33a0c4522c778edc53ac3bbfdaa65f776f93a9eb3ff18"`
Dec 04 23:21:24.921 INFO running `"docker" "rm" "-f" "8d69f894841941877cc33a0c4522c778edc53ac3bbfdaa65f776f93a9eb3ff18"`
Dec 04 23:21:25.076 INFO [stdout] 8d69f894841941877cc33a0c4522c778edc53ac3bbfdaa65f776f93a9eb3ff18