Dec 19 16:26:20.268 INFO checking golddranks/tokio-loop against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 16:26:20.268 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/golddranks/tokio-loop:/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 16:26:20.866 INFO [stdout] f6099d5a4eee73cfadf822c88733693ae598a4659195e15540bb1cbbf9d462c3
Dec 19 16:26:20.868 INFO running `"docker" "start" "-a" "f6099d5a4eee73cfadf822c88733693ae598a4659195e15540bb1cbbf9d462c3"`
Dec 19 16:26:22.561 INFO [stderr]     Checking net2 v0.2.29
Dec 19 16:26:22.578 INFO [stderr]     Checking env_logger v0.4.2
Dec 19 16:26:23.552 INFO [stderr]     Checking mio v0.6.7
Dec 19 16:26:25.036 INFO [stderr]     Checking tokio-core v0.1.7
Dec 19 16:26:26.408 INFO [stderr]     Checking tokio_loop v0.1.0 (/opt/crater/workdir)
Dec 19 16:26:28.124 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.69s
Dec 19 16:26:28.949 INFO running `"docker" "inspect" "f6099d5a4eee73cfadf822c88733693ae598a4659195e15540bb1cbbf9d462c3"`
Dec 19 16:26:29.344 INFO running `"docker" "rm" "-f" "f6099d5a4eee73cfadf822c88733693ae598a4659195e15540bb1cbbf9d462c3"`
Dec 19 16:26:29.597 INFO [stdout] f6099d5a4eee73cfadf822c88733693ae598a4659195e15540bb1cbbf9d462c3