Dec 19 10:42:42.441 INFO checking psFried/tokio-fizz-buzz against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 10:42:42.441 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/psFried/tokio-fizz-buzz:/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 10:42:43.026 INFO [stdout] 50256bfdda4b9bf3f88113ccf54ee5c79ffc4870f21a5e0b083f86cfc5ce9480
Dec 19 10:42:43.028 INFO running `"docker" "start" "-a" "50256bfdda4b9bf3f88113ccf54ee5c79ffc4870f21a5e0b083f86cfc5ce9480"`
Dec 19 10:42:45.777 INFO [stderr]     Checking futures v0.1.3
Dec 19 10:42:47.118 INFO [stderr]     Checking tokio-core v0.1.0
Dec 19 10:42:48.043 INFO [stderr]     Checking tokio-fizz-buzz v0.1.0 (/opt/crater/workdir)
Dec 19 10:42:48.495 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.82s
Dec 19 10:42:49.967 INFO running `"docker" "inspect" "50256bfdda4b9bf3f88113ccf54ee5c79ffc4870f21a5e0b083f86cfc5ce9480"`
Dec 19 10:42:50.210 INFO running `"docker" "rm" "-f" "50256bfdda4b9bf3f88113ccf54ee5c79ffc4870f21a5e0b083f86cfc5ce9480"`
Dec 19 10:42:50.556 INFO [stdout] 50256bfdda4b9bf3f88113ccf54ee5c79ffc4870f21a5e0b083f86cfc5ce9480