Dec 05 01:42:26.634 INFO checking Kayren/wardice against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 01:42:26.634 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 05 01:42:27.143 INFO [stdout] 018b342d66a02ec666e6df6d543873f74c486413032d3b9d0f6da18138b4d35a
Dec 05 01:42:27.147 INFO running `"docker" "start" "-a" "018b342d66a02ec666e6df6d543873f74c486413032d3b9d0f6da18138b4d35a"`
Dec 05 01:42:28.368 INFO [stderr] usermod: no changes
Dec 05 01:42:28.468 INFO [stderr]    Compiling serde_derive v1.0.72
Dec 05 01:42:43.032 INFO [stderr]     Checking wardice v0.1.0 (/source)
Dec 05 01:42:44.365 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 05 01:42:44.365 INFO [stderr]    --> src/lib.rs:233:5
Dec 05 01:42:44.365 INFO [stderr]     |
Dec 05 01:42:44.366 INFO [stderr] 233 |     rolls.clone().into_iter().map(|r| reroll_dice(&mut rerolls, r)).collect::<()>();
Dec 05 01:42:44.366 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 01:42:44.367 INFO [stderr]     |
Dec 05 01:42:44.367 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 01:42:44.367 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 05 01:42:44.367 INFO [stderr] 
Dec 05 01:42:44.486 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 05 01:42:44.486 INFO [stderr]    --> src/lib.rs:233:5
Dec 05 01:42:44.486 INFO [stderr]     |
Dec 05 01:42:44.486 INFO [stderr] 233 |     rolls.clone().into_iter().map(|r| reroll_dice(&mut rerolls, r)).collect::<()>();
Dec 05 01:42:44.486 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 01:42:44.486 INFO [stderr]     |
Dec 05 01:42:44.486 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 01:42:44.487 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 05 01:42:44.487 INFO [stderr] 
Dec 05 01:42:47.238 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.84s
Dec 05 01:42:47.243 INFO [stderr] su: No module specific data is present
Dec 05 01:42:47.955 INFO running `"docker" "inspect" "018b342d66a02ec666e6df6d543873f74c486413032d3b9d0f6da18138b4d35a"`
Dec 05 01:42:48.229 INFO running `"docker" "rm" "-f" "018b342d66a02ec666e6df6d543873f74c486413032d3b9d0f6da18138b4d35a"`
Dec 05 01:42:48.496 INFO [stdout] 018b342d66a02ec666e6df6d543873f74c486413032d3b9d0f6da18138b4d35a