Dec 18 14:03:01.337 INFO checking merging-iterator-1.1.0 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 14:03:01.337 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/merging-iterator/1.1.0:/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 14:03:01.542 INFO [stdout] 3777d66793bf4752f68a7e9bdb49e15108c0480a57a2f7c9a81e5a957fd28085
Dec 18 14:03:01.545 INFO running `"docker" "start" "-a" "3777d66793bf4752f68a7e9bdb49e15108c0480a57a2f7c9a81e5a957fd28085"`
Dec 18 14:03:02.329 INFO [stderr]     Checking merging-iterator v1.1.0 (/opt/crater/workdir)
Dec 18 14:03:02.340 INFO [stderr]     Checking rand v0.5.5
Dec 18 14:03:04.625 INFO [stderr]     Checking proptest v0.8.7
Dec 18 14:03:13.188 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.94s
Dec 18 14:03:13.441 INFO running `"docker" "inspect" "3777d66793bf4752f68a7e9bdb49e15108c0480a57a2f7c9a81e5a957fd28085"`
Dec 18 14:03:13.591 INFO running `"docker" "rm" "-f" "3777d66793bf4752f68a7e9bdb49e15108c0480a57a2f7c9a81e5a957fd28085"`
Dec 18 14:03:13.692 INFO [stdout] 3777d66793bf4752f68a7e9bdb49e15108c0480a57a2f7c9a81e5a957fd28085