Dec 19 08:05:49.444 INFO checking steveklabnik/adventure2 against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 08:05:49.444 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/steveklabnik/adventure2:/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 08:05:50.052 INFO [stdout] 9df9d7d2c26201da57b27be76bb52fc77cc87dcefce0df68f799cac2d90e2462
Dec 19 08:05:50.052 INFO running `"docker" "start" "-a" "9df9d7d2c26201da57b27be76bb52fc77cc87dcefce0df68f799cac2d90e2462"`
Dec 19 08:05:52.036 INFO [stderr]     Checking serde_json v1.0.32
Dec 19 08:05:52.036 INFO [stderr]    Compiling syn v0.15.12
Dec 19 08:06:02.560 INFO [stderr]    Compiling serde_derive v1.0.80
Dec 19 08:06:18.368 INFO [stderr]     Checking adventure v0.1.0 (/opt/crater/workdir)
Dec 19 08:06:19.102 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.15s
Dec 19 08:06:20.499 INFO running `"docker" "inspect" "9df9d7d2c26201da57b27be76bb52fc77cc87dcefce0df68f799cac2d90e2462"`
Dec 19 08:06:20.860 INFO running `"docker" "rm" "-f" "9df9d7d2c26201da57b27be76bb52fc77cc87dcefce0df68f799cac2d90e2462"`
Dec 19 08:06:21.180 INFO [stdout] 9df9d7d2c26201da57b27be76bb52fc77cc87dcefce0df68f799cac2d90e2462