Dec 19 18:05:39.234 INFO checking demostf/sync-rs against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 18:05:39.234 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/demostf/sync-rs:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 18:05:39.822 INFO [stdout] 950220b7f1d5910f14348ef4a742d4b120d89d62abf7b39776cc03d5dab83e90
Dec 19 18:05:39.824 INFO running `"docker" "start" "-a" "950220b7f1d5910f14348ef4a742d4b120d89d62abf7b39776cc03d5dab83e90"`
Dec 19 18:05:41.098 INFO [stderr]     Checking bytes v0.4.5
Dec 19 18:05:41.100 INFO [stderr]     Checking mio v0.6.10
Dec 19 18:05:42.690 INFO [stderr]     Checking ws v0.7.3
Dec 19 18:05:44.280 INFO [stderr]     Checking sync v0.1.0 (/opt/crater/workdir)
Dec 19 18:05:44.987 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.01s
Dec 19 18:05:45.314 INFO running `"docker" "inspect" "950220b7f1d5910f14348ef4a742d4b120d89d62abf7b39776cc03d5dab83e90"`
Dec 19 18:05:45.444 INFO running `"docker" "rm" "-f" "950220b7f1d5910f14348ef4a742d4b120d89d62abf7b39776cc03d5dab83e90"`
Dec 19 18:05:45.558 INFO [stdout] 950220b7f1d5910f14348ef4a742d4b120d89d62abf7b39776cc03d5dab83e90