Nov 30 07:49:28.071 INFO checking YoshikuniJujo/learn_rust against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 30 07:49:28.071 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-1/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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 30 07:49:28.669 INFO [stdout] 91251e9a74de9d22bd4de7029698d2509d86fcb460e3601b90528b0a49fd6c9c
Nov 30 07:49:28.672 INFO running `"docker" "start" "-a" "91251e9a74de9d22bd4de7029698d2509d86fcb460e3601b90528b0a49fd6c9c"`
Nov 30 07:49:29.824 INFO [stderr] usermod: no changes
Nov 30 07:49:29.919 INFO [stderr]     Checking learn_rust v0.1.0 (/source)
Nov 30 07:49:32.553 INFO [stderr] warning: value assigned to `x` is never read
Nov 30 07:49:32.553 INFO [stderr]  --> src/mutability.rs:9:10
Nov 30 07:49:32.554 INFO [stderr]   |
Nov 30 07:49:32.554 INFO [stderr] 9 |     let mut x = 5;
Nov 30 07:49:32.554 INFO [stderr]   |             ^
Nov 30 07:49:32.556 INFO [stderr]   |
Nov 30 07:49:32.557 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Nov 30 07:49:32.557 INFO [stderr] 
Nov 30 07:49:32.557 INFO [stderr] warning: variable `y` is assigned to, but never used
Nov 30 07:49:32.558 INFO [stderr]   --> src/mutability.rs:13:10
Nov 30 07:49:32.558 INFO [stderr]    |
Nov 30 07:49:32.558 INFO [stderr] 13 |     let mut y = &mut x;
Nov 30 07:49:32.559 INFO [stderr]    |             ^
Nov 30 07:49:32.559 INFO [stderr]    |
Nov 30 07:49:32.559 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 07:49:32.560 INFO [stderr]    = note: consider using `_y` instead
Nov 30 07:49:32.560 INFO [stderr] 
Nov 30 07:49:32.560 INFO [stderr] warning: value assigned to `y` is never read
Nov 30 07:49:32.560 INFO [stderr]   --> src/mutability.rs:14:2
Nov 30 07:49:32.561 INFO [stderr]    |
Nov 30 07:49:32.561 INFO [stderr] 14 |     y = &mut z;
Nov 30 07:49:32.561 INFO [stderr]    |     ^
Nov 30 07:49:32.561 INFO [stderr] 
Nov 30 07:49:32.563 INFO [stderr] warning: field is never used: `x`
Nov 30 07:49:32.563 INFO [stderr]  --> src/mutability.rs:4:2
Nov 30 07:49:32.563 INFO [stderr]   |
Nov 30 07:49:32.563 INFO [stderr] 4 |     x: i32,
Nov 30 07:49:32.563 INFO [stderr]   |     ^^^^^^
Nov 30 07:49:32.576 INFO [stderr]   |
Nov 30 07:49:32.576 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 30 07:49:32.576 INFO [stderr] 
Nov 30 07:49:32.822 INFO [stderr] warning: function is never used: `foo`
Nov 30 07:49:32.822 INFO [stderr]   --> src/ownership.rs:26:1
Nov 30 07:49:32.822 INFO [stderr]    |
Nov 30 07:49:32.822 INFO [stderr] 26 | fn foo(v: Vec<i32>) -> Vec<i32> {
Nov 30 07:49:32.822 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 07:49:32.822 INFO [stderr]    |
Nov 30 07:49:32.832 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 30 07:49:32.848 INFO [stderr] 
Nov 30 07:49:36.802 INFO [stderr] warning: function is never used: `foo`
Nov 30 07:49:36.802 INFO [stderr]   --> src/ownership.rs:26:1
Nov 30 07:49:36.803 INFO [stderr]    |
Nov 30 07:49:36.803 INFO [stderr] 26 | fn foo(v: Vec<i32>) -> Vec<i32> {
Nov 30 07:49:36.803 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 07:49:36.803 INFO [stderr]    |
Nov 30 07:49:36.804 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 30 07:49:36.804 INFO [stderr] 
Nov 30 07:49:37.059 INFO [stderr] warning: value assigned to `x` is never read
Nov 30 07:49:37.059 INFO [stderr]  --> src/mutability.rs:9:10
Nov 30 07:49:37.059 INFO [stderr]   |
Nov 30 07:49:37.060 INFO [stderr] 9 |     let mut x = 5;
Nov 30 07:49:37.060 INFO [stderr]   |             ^
Nov 30 07:49:37.060 INFO [stderr]   |
Nov 30 07:49:37.061 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Nov 30 07:49:37.061 INFO [stderr] 
Nov 30 07:49:37.061 INFO [stderr] warning: variable `y` is assigned to, but never used
Nov 30 07:49:37.061 INFO [stderr]   --> src/mutability.rs:13:10
Nov 30 07:49:37.062 INFO [stderr]    |
Nov 30 07:49:37.062 INFO [stderr] 13 |     let mut y = &mut x;
Nov 30 07:49:37.062 INFO [stderr]    |             ^
Nov 30 07:49:37.063 INFO [stderr]    |
Nov 30 07:49:37.063 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 07:49:37.063 INFO [stderr]    = note: consider using `_y` instead
Nov 30 07:49:37.063 INFO [stderr] 
Nov 30 07:49:37.064 INFO [stderr] warning: value assigned to `y` is never read
Nov 30 07:49:37.064 INFO [stderr]   --> src/mutability.rs:14:2
Nov 30 07:49:37.064 INFO [stderr]    |
Nov 30 07:49:37.065 INFO [stderr] 14 |     y = &mut z;
Nov 30 07:49:37.065 INFO [stderr]    |     ^
Nov 30 07:49:37.065 INFO [stderr] 
Nov 30 07:49:37.065 INFO [stderr] warning: field is never used: `x`
Nov 30 07:49:37.066 INFO [stderr]  --> src/mutability.rs:4:2
Nov 30 07:49:37.066 INFO [stderr]   |
Nov 30 07:49:37.066 INFO [stderr] 4 |     x: i32,
Nov 30 07:49:37.066 INFO [stderr]   |     ^^^^^^
Nov 30 07:49:37.067 INFO [stderr]   |
Nov 30 07:49:37.067 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 30 07:49:37.067 INFO [stderr] 
Nov 30 07:49:37.111 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.26s
Nov 30 07:49:37.114 INFO [stderr] su: No module specific data is present
Nov 30 07:49:38.462 INFO running `"docker" "inspect" "91251e9a74de9d22bd4de7029698d2509d86fcb460e3601b90528b0a49fd6c9c"`
Nov 30 07:49:38.762 INFO running `"docker" "rm" "-f" "91251e9a74de9d22bd4de7029698d2509d86fcb460e3601b90528b0a49fd6c9c"`
Nov 30 07:49:38.996 INFO [stdout] 91251e9a74de9d22bd4de7029698d2509d86fcb460e3601b90528b0a49fd6c9c