Dec 19 17:41:31.363 INFO checking duxet/json-dereferencer against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 17:41:31.363 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 17:41:31.763 INFO [stdout] 0cb2788525a632fd6e50d68b0ef41efa4b027b0dca6abf6975107c4392e3b388
Dec 19 17:41:31.765 INFO running `"docker" "start" "-a" "0cb2788525a632fd6e50d68b0ef41efa4b027b0dca6abf6975107c4392e3b388"`
Dec 19 17:41:32.966 INFO [stderr]     Checking serde v1.0.2
Dec 19 17:41:32.966 INFO [stderr]     Checking term_size v0.3.0
Dec 19 17:41:33.269 INFO [stderr]     Checking clap v2.23.2
Dec 19 17:41:42.628 INFO [stderr]     Checking serde_json v1.0.1
Dec 19 17:41:44.732 INFO [stderr]     Checking json-dereferencer v0.1.0 (/opt/crater/workdir)
Dec 19 17:41:45.390 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.48s
Dec 19 17:41:45.850 INFO running `"docker" "inspect" "0cb2788525a632fd6e50d68b0ef41efa4b027b0dca6abf6975107c4392e3b388"`
Dec 19 17:41:46.028 INFO running `"docker" "rm" "-f" "0cb2788525a632fd6e50d68b0ef41efa4b027b0dca6abf6975107c4392e3b388"`
Dec 19 17:41:46.300 INFO [stdout] 0cb2788525a632fd6e50d68b0ef41efa4b027b0dca6abf6975107c4392e3b388