Dec 19 09:11:05.271 INFO checking seanmceligot/drt against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 09:11:05.271 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/seanmceligot/drt:/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 09:11:05.807 INFO [stdout] 812c140dde5117d90ed2957f886956d7a1a2e021a6eacb43833a001e63e4b478
Dec 19 09:11:05.810 INFO running `"docker" "start" "-a" "812c140dde5117d90ed2957f886956d7a1a2e021a6eacb43833a001e63e4b478"`
Dec 19 09:11:07.687 INFO [stderr]    Compiling syn v0.15.13
Dec 19 09:11:07.700 INFO [stderr]     Checking env_logger v0.5.13
Dec 19 09:11:08.705 INFO [stderr]     Checking quickcheck v0.6.2
Dec 19 09:11:17.024 INFO [stderr]    Compiling serde_derive v1.0.80
Dec 19 09:11:32.166 INFO [stderr]     Checking drt v0.1.0 (/opt/crater/workdir)
Dec 19 09:11:33.892 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.33s
Dec 19 09:11:35.419 INFO running `"docker" "inspect" "812c140dde5117d90ed2957f886956d7a1a2e021a6eacb43833a001e63e4b478"`
Dec 19 09:11:35.756 INFO running `"docker" "rm" "-f" "812c140dde5117d90ed2957f886956d7a1a2e021a6eacb43833a001e63e4b478"`
Dec 19 09:11:36.152 INFO [stdout] 812c140dde5117d90ed2957f886956d7a1a2e021a6eacb43833a001e63e4b478