Dec 19 17:41:33.075 INFO checking duxet/json-dereferencer against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 17:41:33.075 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/duxet/json-dereferencer:/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 17:41:33.500 INFO [stdout] 89cc3f590237bd428128d7cd51a278a27ead11edb4fb2734abab910a3bef97a6
Dec 19 17:41:33.502 INFO running `"docker" "start" "-a" "89cc3f590237bd428128d7cd51a278a27ead11edb4fb2734abab910a3bef97a6"`
Dec 19 17:41:34.692 INFO [stderr]     Checking clap v2.23.2
Dec 19 17:41:40.814 INFO [stderr]     Checking json-dereferencer v0.1.0 (/opt/crater/workdir)
Dec 19 17:41:41.597 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.99s
Dec 19 17:41:42.388 INFO running `"docker" "inspect" "89cc3f590237bd428128d7cd51a278a27ead11edb4fb2734abab910a3bef97a6"`
Dec 19 17:41:42.726 INFO running `"docker" "rm" "-f" "89cc3f590237bd428128d7cd51a278a27ead11edb4fb2734abab910a3bef97a6"`
Dec 19 17:41:43.010 INFO [stdout] 89cc3f590237bd428128d7cd51a278a27ead11edb4fb2734abab910a3bef97a6