Dec 19 11:30:35.856 INFO checking olix0r/tokio-task-example against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 11:30:35.856 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/olix0r/tokio-task-example:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 11:30:41.912 INFO [stdout] 477cbb4fa9b1101789c26d0c9fc275a64248a63e418d48c21911f81a22e1b099
Dec 19 11:30:41.914 INFO running `"docker" "start" "-a" "477cbb4fa9b1101789c26d0c9fc275a64248a63e418d48c21911f81a22e1b099"`
Dec 19 11:30:46.470 INFO [stderr]     Checking tokio-timer v0.1.1
Dec 19 11:30:46.500 INFO [stderr]     Checking pretty_env_logger v0.1.0
Dec 19 11:30:47.054 INFO [stderr]     Checking tokio-task-example v0.1.0 (/opt/crater/workdir)
Dec 19 11:30:47.632 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.61s
Dec 19 11:30:51.210 INFO running `"docker" "inspect" "477cbb4fa9b1101789c26d0c9fc275a64248a63e418d48c21911f81a22e1b099"`
Dec 19 11:30:51.492 INFO running `"docker" "rm" "-f" "477cbb4fa9b1101789c26d0c9fc275a64248a63e418d48c21911f81a22e1b099"`
Dec 19 11:30:52.433 INFO [stdout] 477cbb4fa9b1101789c26d0c9fc275a64248a63e418d48c21911f81a22e1b099