Dec 12 02:14:13.116 INFO checking Jarusk/kerrigan against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 02:14:13.116 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 12 02:14:13.347 INFO [stdout] 1be98c9b83cfeaa60edd66cf062879a007e77a2f3302d9f71cc274f2fe82539b
Dec 12 02:14:13.350 INFO running `"docker" "start" "-a" "1be98c9b83cfeaa60edd66cf062879a007e77a2f3302d9f71cc274f2fe82539b"`
Dec 12 02:14:13.778 INFO [stderr] usermod: no changes
Dec 12 02:14:13.813 INFO [stderr]     Checking kerrigan v0.1.0 (/source)
Dec 12 02:14:14.220 INFO [stderr] warning: unused import: `std::env`
Dec 12 02:14:14.220 INFO [stderr]  --> src/parseargs.rs:1:5
Dec 12 02:14:14.220 INFO [stderr]   |
Dec 12 02:14:14.220 INFO [stderr] 1 | use std::env;
Dec 12 02:14:14.220 INFO [stderr]   |     ^^^^^^^^
Dec 12 02:14:14.220 INFO [stderr]   |
Dec 12 02:14:14.220 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 02:14:14.220 INFO [stderr] 
Dec 12 02:14:14.230 INFO [stderr] warning: field is never used: `num_queens`
Dec 12 02:14:14.230 INFO [stderr]   --> src/parseargs.rs:10:5
Dec 12 02:14:14.231 INFO [stderr]    |
Dec 12 02:14:14.231 INFO [stderr] 10 |     num_queens: u8,
Dec 12 02:14:14.231 INFO [stderr]    |     ^^^^^^^^^^^^^^
Dec 12 02:14:14.231 INFO [stderr]    |
Dec 12 02:14:14.231 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 02:14:14.231 INFO [stderr] 
Dec 12 02:14:14.231 INFO [stderr] warning: field is never used: `num_threads`
Dec 12 02:14:14.231 INFO [stderr]   --> src/parseargs.rs:11:5
Dec 12 02:14:14.231 INFO [stderr]    |
Dec 12 02:14:14.231 INFO [stderr] 11 |     num_threads: u8,
Dec 12 02:14:14.231 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 12 02:14:14.231 INFO [stderr] 
Dec 12 02:14:14.345 INFO [stderr] warning: unused import: `std::env`
Dec 12 02:14:14.345 INFO [stderr]  --> src/parseargs.rs:1:5
Dec 12 02:14:14.345 INFO [stderr]   |
Dec 12 02:14:14.345 INFO [stderr] 1 | use std::env;
Dec 12 02:14:14.345 INFO [stderr]   |     ^^^^^^^^
Dec 12 02:14:14.345 INFO [stderr]   |
Dec 12 02:14:14.345 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 02:14:14.345 INFO [stderr] 
Dec 12 02:14:14.352 INFO [stderr] warning: field is never used: `num_queens`
Dec 12 02:14:14.352 INFO [stderr]   --> src/parseargs.rs:10:5
Dec 12 02:14:14.352 INFO [stderr]    |
Dec 12 02:14:14.352 INFO [stderr] 10 |     num_queens: u8,
Dec 12 02:14:14.352 INFO [stderr]    |     ^^^^^^^^^^^^^^
Dec 12 02:14:14.352 INFO [stderr]    |
Dec 12 02:14:14.352 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 02:14:14.352 INFO [stderr] 
Dec 12 02:14:14.352 INFO [stderr] warning: field is never used: `num_threads`
Dec 12 02:14:14.352 INFO [stderr]   --> src/parseargs.rs:11:5
Dec 12 02:14:14.353 INFO [stderr]    |
Dec 12 02:14:14.353 INFO [stderr] 11 |     num_threads: u8,
Dec 12 02:14:14.353 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 12 02:14:14.353 INFO [stderr] 
Dec 12 02:14:14.360 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
Dec 12 02:14:14.362 INFO [stderr] su: No module specific data is present
Dec 12 02:14:14.679 INFO running `"docker" "inspect" "1be98c9b83cfeaa60edd66cf062879a007e77a2f3302d9f71cc274f2fe82539b"`
Dec 12 02:14:14.796 INFO running `"docker" "rm" "-f" "1be98c9b83cfeaa60edd66cf062879a007e77a2f3302d9f71cc274f2fe82539b"`
Dec 12 02:14:14.944 INFO [stdout] 1be98c9b83cfeaa60edd66cf062879a007e77a2f3302d9f71cc274f2fe82539b