Dec 12 13:41:01.332 INFO checking grabbag-0.1.2 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 13:41:01.332 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 13:41:01.840 INFO [stdout] ec7b8a2b0c3e2b4c41a21c86f5664f1c463312a7a01c160090fbffbc2a2b8b95
Dec 12 13:41:01.842 INFO running `"docker" "start" "-a" "ec7b8a2b0c3e2b4c41a21c86f5664f1c463312a7a01c160090fbffbc2a2b8b95"`
Dec 12 13:41:02.575 INFO [stderr] usermod: no changes
Dec 12 13:41:02.613 INFO [stderr]    Compiling grabbag_macros v0.1.2
Dec 12 13:41:04.528 INFO [stderr]     Checking grabbag v0.1.2 (/source)
Dec 12 13:41:06.416 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 12 13:41:06.416 INFO [stderr]   --> src/iter/skip_exactly.rs:57:37
Dec 12 13:41:06.417 INFO [stderr]    |
Dec 12 13:41:06.417 INFO [stderr] 57 |     let r = thread::spawn(move || { v.into_iter().skip_exactly(3).collect::<Vec<_>>(); }).join();
Dec 12 13:41:06.417 INFO [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:41:06.417 INFO [stderr]    |
Dec 12 13:41:06.417 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 13:41:06.417 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 12 13:41:06.417 INFO [stderr] 
Dec 12 13:41:06.418 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 12 13:41:06.418 INFO [stderr]   --> src/iter/take_exactly.rs:90:37
Dec 12 13:41:06.418 INFO [stderr]    |
Dec 12 13:41:06.418 INFO [stderr] 90 |     let r = thread::spawn(move || { v.into_iter().take_exactly(3).collect::<Vec<_>>(); }).join();
Dec 12 13:41:06.418 INFO [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:41:06.418 INFO [stderr]    |
Dec 12 13:41:06.418 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 12 13:41:06.418 INFO [stderr] 
Dec 12 13:41:06.477 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.87s
Dec 12 13:41:06.480 INFO [stderr] su: No module specific data is present
Dec 12 13:41:07.303 INFO running `"docker" "inspect" "ec7b8a2b0c3e2b4c41a21c86f5664f1c463312a7a01c160090fbffbc2a2b8b95"`
Dec 12 13:41:07.668 INFO running `"docker" "rm" "-f" "ec7b8a2b0c3e2b4c41a21c86f5664f1c463312a7a01c160090fbffbc2a2b8b95"`
Dec 12 13:41:07.967 INFO [stdout] ec7b8a2b0c3e2b4c41a21c86f5664f1c463312a7a01c160090fbffbc2a2b8b95