Dec 18 02:37:47.125 INFO checking cesare/helixexp against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 02:37:47.125 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/cesare/helixexp:/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 02:37:47.616 INFO [stdout] dfb92b20083c152913a2e38d2a4f1cfe5263a82aa6e251b1b031b65a573bc801
Dec 18 02:37:47.624 INFO running `"docker" "start" "-a" "dfb92b20083c152913a2e38d2a4f1cfe5263a82aa6e251b1b031b65a573bc801"`
Dec 18 02:37:49.432 INFO [stderr]    Compiling libcruby-sys v0.6.3
Dec 18 02:37:50.804 INFO [stderr]     Checking helix v0.6.3
Dec 18 02:37:51.231 INFO [stderr]     Checking helixexp v0.1.0 (/opt/crater/workdir)
Dec 18 02:37:51.813 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.44s
Dec 18 02:37:52.520 INFO running `"docker" "inspect" "dfb92b20083c152913a2e38d2a4f1cfe5263a82aa6e251b1b031b65a573bc801"`
Dec 18 02:37:52.796 INFO running `"docker" "rm" "-f" "dfb92b20083c152913a2e38d2a4f1cfe5263a82aa6e251b1b031b65a573bc801"`
Dec 18 02:37:53.106 INFO [stdout] dfb92b20083c152913a2e38d2a4f1cfe5263a82aa6e251b1b031b65a573bc801