Nov 28 10:17:55.859 INFO checking YoshikuniJujo/learn_rust against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 28 10:17:55.860 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-6/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/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 +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-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"`
Nov 28 10:17:56.249 INFO [stdout] 3a2934ff2d89de7d0e4d10ae12a1fadbfb252967ba58208da77d6924396cf6ad
Nov 28 10:17:56.255 INFO running `"docker" "start" "-a" "3a2934ff2d89de7d0e4d10ae12a1fadbfb252967ba58208da77d6924396cf6ad"`
Nov 28 10:17:57.542 INFO [stderr] usermod: no changes
Nov 28 10:17:57.580 INFO [stderr]     Checking learn_rust v0.1.0 (/source)
Nov 28 10:17:59.736 INFO [stderr] warning: value assigned to `x` is never read
Nov 28 10:17:59.737 INFO [stderr]  --> src/mutability.rs:9:10
Nov 28 10:17:59.738 INFO [stderr]   |
Nov 28 10:17:59.739 INFO [stderr] 9 |     let mut x = 5;
Nov 28 10:17:59.739 INFO [stderr]   |             ^
Nov 28 10:17:59.764 INFO [stderr]   |
Nov 28 10:17:59.765 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Nov 28 10:17:59.766 INFO [stderr] 
Nov 28 10:17:59.766 INFO [stderr] warning: variable `y` is assigned to, but never used
Nov 28 10:17:59.767 INFO [stderr]   --> src/mutability.rs:13:10
Nov 28 10:17:59.767 INFO [stderr]    |
Nov 28 10:17:59.767 INFO [stderr] 13 |     let mut y = &mut x;
Nov 28 10:17:59.767 INFO [stderr]    |             ^
Nov 28 10:17:59.767 INFO [stderr]    |
Nov 28 10:17:59.767 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 10:17:59.767 INFO [stderr]    = note: consider using `_y` instead
Nov 28 10:17:59.767 INFO [stderr] 
Nov 28 10:17:59.772 INFO [stderr] warning: value assigned to `y` is never read
Nov 28 10:17:59.772 INFO [stderr]   --> src/mutability.rs:14:2
Nov 28 10:17:59.772 INFO [stderr]    |
Nov 28 10:17:59.772 INFO [stderr] 14 |     y = &mut z;
Nov 28 10:17:59.772 INFO [stderr]    |     ^
Nov 28 10:17:59.772 INFO [stderr] 
Nov 28 10:17:59.772 INFO [stderr] warning: field is never used: `x`
Nov 28 10:17:59.772 INFO [stderr]  --> src/mutability.rs:4:2
Nov 28 10:17:59.772 INFO [stderr]   |
Nov 28 10:17:59.772 INFO [stderr] 4 |     x: i32,
Nov 28 10:17:59.772 INFO [stderr]   |     ^^^^^^
Nov 28 10:17:59.772 INFO [stderr]   |
Nov 28 10:17:59.772 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 28 10:17:59.772 INFO [stderr] 
Nov 28 10:18:00.000 INFO [stderr] warning: function is never used: `foo`
Nov 28 10:18:00.000 INFO [stderr]   --> src/ownership.rs:26:1
Nov 28 10:18:00.000 INFO [stderr]    |
Nov 28 10:18:00.000 INFO [stderr] 26 | fn foo(v: Vec<i32>) -> Vec<i32> {
Nov 28 10:18:00.000 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 10:18:00.000 INFO [stderr]    |
Nov 28 10:18:00.000 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 10:18:00.000 INFO [stderr] 
Nov 28 10:18:02.376 INFO [stderr] warning: function is never used: `foo`
Nov 28 10:18:02.376 INFO [stderr]   --> src/ownership.rs:26:1
Nov 28 10:18:02.376 INFO [stderr]    |
Nov 28 10:18:02.376 INFO [stderr] 26 | fn foo(v: Vec<i32>) -> Vec<i32> {
Nov 28 10:18:02.376 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 10:18:02.380 INFO [stderr]    |
Nov 28 10:18:02.381 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 10:18:02.381 INFO [stderr] 
Nov 28 10:18:03.441 INFO [stderr] warning: value assigned to `x` is never read
Nov 28 10:18:03.441 INFO [stderr]  --> src/mutability.rs:9:10
Nov 28 10:18:03.442 INFO [stderr]   |
Nov 28 10:18:03.442 INFO [stderr] 9 |     let mut x = 5;
Nov 28 10:18:03.442 INFO [stderr]   |             ^
Nov 28 10:18:03.453 INFO [stderr]   |
Nov 28 10:18:03.474 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Nov 28 10:18:03.474 INFO [stderr] 
Nov 28 10:18:03.476 INFO [stderr] warning: variable `y` is assigned to, but never used
Nov 28 10:18:03.477 INFO [stderr]   --> src/mutability.rs:13:10
Nov 28 10:18:03.477 INFO [stderr]    |
Nov 28 10:18:03.477 INFO [stderr] 13 |     let mut y = &mut x;
Nov 28 10:18:03.477 INFO [stderr]    |             ^
Nov 28 10:18:03.478 INFO [stderr]    |
Nov 28 10:18:03.478 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 10:18:03.478 INFO [stderr]    = note: consider using `_y` instead
Nov 28 10:18:03.478 INFO [stderr] 
Nov 28 10:18:03.479 INFO [stderr] warning: value assigned to `y` is never read
Nov 28 10:18:03.479 INFO [stderr]   --> src/mutability.rs:14:2
Nov 28 10:18:03.479 INFO [stderr]    |
Nov 28 10:18:03.479 INFO [stderr] 14 |     y = &mut z;
Nov 28 10:18:03.480 INFO [stderr]    |     ^
Nov 28 10:18:03.480 INFO [stderr] 
Nov 28 10:18:03.484 INFO [stderr] warning: field is never used: `x`
Nov 28 10:18:03.485 INFO [stderr]  --> src/mutability.rs:4:2
Nov 28 10:18:03.485 INFO [stderr]   |
Nov 28 10:18:03.485 INFO [stderr] 4 |     x: i32,
Nov 28 10:18:03.486 INFO [stderr]   |     ^^^^^^
Nov 28 10:18:03.486 INFO [stderr]   |
Nov 28 10:18:03.486 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 28 10:18:03.486 INFO [stderr] 
Nov 28 10:18:03.643 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.08s
Nov 28 10:18:03.653 INFO [stderr] su: No module specific data is present
Nov 28 10:18:04.440 INFO running `"docker" "inspect" "3a2934ff2d89de7d0e4d10ae12a1fadbfb252967ba58208da77d6924396cf6ad"`
Nov 28 10:18:04.622 INFO running `"docker" "rm" "-f" "3a2934ff2d89de7d0e4d10ae12a1fadbfb252967ba58208da77d6924396cf6ad"`
Nov 28 10:18:04.837 INFO [stdout] 3a2934ff2d89de7d0e4d10ae12a1fadbfb252967ba58208da77d6924396cf6ad