Dec 18 15:34:31.133 INFO checking grabbag-0.1.2 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 15:34:31.134 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/grabbag/0.1.2:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 15:34:31.454 INFO [stdout] f843cf0b8cf8fa7477ac54d7ad9888e25bd612940535ce6adc0ab511726c08a8
Dec 18 15:34:31.460 INFO running `"docker" "start" "-a" "f843cf0b8cf8fa7477ac54d7ad9888e25bd612940535ce6adc0ab511726c08a8"`
Dec 18 15:34:32.577 INFO [stderr]    Compiling grabbag_macros v0.1.2
Dec 18 15:34:33.522 INFO [stderr]     Checking grabbag v0.1.2 (/opt/crater/workdir)
Dec 18 15:34:34.520 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 18 15:34:34.538 INFO [stderr]   --> src/iter/skip_exactly.rs:57:37
Dec 18 15:34:34.538 INFO [stderr]    |
Dec 18 15:34:34.538 INFO [stderr] 57 |     let r = thread::spawn(move || { v.into_iter().skip_exactly(3).collect::<Vec<_>>(); }).join();
Dec 18 15:34:34.538 INFO [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 15:34:34.538 INFO [stderr]    |
Dec 18 15:34:34.538 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 15:34:34.538 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 18 15:34:34.538 INFO [stderr] 
Dec 18 15:34:34.538 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 18 15:34:34.538 INFO [stderr]   --> src/iter/take_exactly.rs:90:37
Dec 18 15:34:34.538 INFO [stderr]    |
Dec 18 15:34:34.538 INFO [stderr] 90 |     let r = thread::spawn(move || { v.into_iter().take_exactly(3).collect::<Vec<_>>(); }).join();
Dec 18 15:34:34.538 INFO [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 15:34:34.538 INFO [stderr]    |
Dec 18 15:34:34.538 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 18 15:34:34.538 INFO [stderr] 
Dec 18 15:34:34.544 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.02s
Dec 18 15:34:34.807 INFO running `"docker" "inspect" "f843cf0b8cf8fa7477ac54d7ad9888e25bd612940535ce6adc0ab511726c08a8"`
Dec 18 15:34:34.915 INFO running `"docker" "rm" "-f" "f843cf0b8cf8fa7477ac54d7ad9888e25bd612940535ce6adc0ab511726c08a8"`
Dec 18 15:34:35.055 INFO [stdout] f843cf0b8cf8fa7477ac54d7ad9888e25bd612940535ce6adc0ab511726c08a8