Nov 30 10:30:07.517 INFO checking Jarusk/kerrigan against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 30 10:30:07.517 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-0/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 10:30:07.802 INFO [stdout] 4f3a84510c6b2eeca2b8e5b056b87c34b09dacc909257a0116e0ccd7533d9bba
Nov 30 10:30:07.802 INFO running `"docker" "start" "-a" "4f3a84510c6b2eeca2b8e5b056b87c34b09dacc909257a0116e0ccd7533d9bba"`
Nov 30 10:30:08.336 INFO [stderr] usermod: no changes
Nov 30 10:30:08.367 INFO [stderr]     Checking kerrigan v0.1.0 (/source)
Nov 30 10:30:08.675 INFO [stderr] warning: unused import: `std::env`
Nov 30 10:30:08.675 INFO [stderr]  --> src/parseargs.rs:1:5
Nov 30 10:30:08.675 INFO [stderr]   |
Nov 30 10:30:08.675 INFO [stderr] 1 | use std::env;
Nov 30 10:30:08.675 INFO [stderr]   |     ^^^^^^^^
Nov 30 10:30:08.675 INFO [stderr]   |
Nov 30 10:30:08.675 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 30 10:30:08.675 INFO [stderr] 
Nov 30 10:30:08.685 INFO [stderr] warning: field is never used: `num_queens`
Nov 30 10:30:08.685 INFO [stderr]   --> src/parseargs.rs:10:5
Nov 30 10:30:08.685 INFO [stderr]    |
Nov 30 10:30:08.685 INFO [stderr] 10 |     num_queens: u8,
Nov 30 10:30:08.685 INFO [stderr]    |     ^^^^^^^^^^^^^^
Nov 30 10:30:08.685 INFO [stderr]    |
Nov 30 10:30:08.685 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 30 10:30:08.685 INFO [stderr] 
Nov 30 10:30:08.685 INFO [stderr] warning: field is never used: `num_threads`
Nov 30 10:30:08.685 INFO [stderr]   --> src/parseargs.rs:11:5
Nov 30 10:30:08.685 INFO [stderr]    |
Nov 30 10:30:08.685 INFO [stderr] 11 |     num_threads: u8,
Nov 30 10:30:08.685 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Nov 30 10:30:08.685 INFO [stderr] 
Nov 30 10:30:08.791 INFO [stderr] warning: unused import: `std::env`
Nov 30 10:30:08.792 INFO [stderr]  --> src/parseargs.rs:1:5
Nov 30 10:30:08.792 INFO [stderr]   |
Nov 30 10:30:08.792 INFO [stderr] 1 | use std::env;
Nov 30 10:30:08.792 INFO [stderr]   |     ^^^^^^^^
Nov 30 10:30:08.792 INFO [stderr]   |
Nov 30 10:30:08.792 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 30 10:30:08.792 INFO [stderr] 
Nov 30 10:30:08.810 INFO [stderr] warning: field is never used: `num_queens`
Nov 30 10:30:08.810 INFO [stderr]   --> src/parseargs.rs:10:5
Nov 30 10:30:08.810 INFO [stderr]    |
Nov 30 10:30:08.810 INFO [stderr] 10 |     num_queens: u8,
Nov 30 10:30:08.810 INFO [stderr]    |     ^^^^^^^^^^^^^^
Nov 30 10:30:08.810 INFO [stderr]    |
Nov 30 10:30:08.810 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 30 10:30:08.810 INFO [stderr] 
Nov 30 10:30:08.810 INFO [stderr] warning: field is never used: `num_threads`
Nov 30 10:30:08.810 INFO [stderr]   --> src/parseargs.rs:11:5
Nov 30 10:30:08.810 INFO [stderr]    |
Nov 30 10:30:08.810 INFO [stderr] 11 |     num_threads: u8,
Nov 30 10:30:08.810 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Nov 30 10:30:08.810 INFO [stderr] 
Nov 30 10:30:08.824 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
Nov 30 10:30:08.828 INFO [stderr] su: No module specific data is present
Nov 30 10:30:09.298 INFO running `"docker" "inspect" "4f3a84510c6b2eeca2b8e5b056b87c34b09dacc909257a0116e0ccd7533d9bba"`
Nov 30 10:30:09.410 INFO running `"docker" "rm" "-f" "4f3a84510c6b2eeca2b8e5b056b87c34b09dacc909257a0116e0ccd7533d9bba"`
Nov 30 10:30:09.516 INFO [stdout] 4f3a84510c6b2eeca2b8e5b056b87c34b09dacc909257a0116e0ccd7533d9bba