Dec 18 10:41:57.108 INFO checking structopt-toml-derive-0.3.0 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 10:41:57.108 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/structopt-toml-derive/0.3.0:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 10:41:57.273 INFO [stdout] 67128bb46fd0decf2e787f3989730656457145f16e89d9e4ee95c7ab0208cf6e
Dec 18 10:41:57.280 INFO running `"docker" "start" "-a" "67128bb46fd0decf2e787f3989730656457145f16e89d9e4ee95c7ab0208cf6e"`
Dec 18 10:41:57.826 INFO [stderr]     Checking proc-macro2 v0.2.3
Dec 18 10:41:58.512 INFO [stderr]     Checking quote v0.4.2
Dec 18 10:41:58.943 INFO [stderr]     Checking syn v0.12.15
Dec 18 10:42:01.821 INFO [stderr]     Checking structopt-toml-derive v0.3.0 (/opt/crater/workdir)
Dec 18 10:42:02.345 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.54s
Dec 18 10:42:02.840 INFO running `"docker" "inspect" "67128bb46fd0decf2e787f3989730656457145f16e89d9e4ee95c7ab0208cf6e"`
Dec 18 10:42:03.174 INFO running `"docker" "rm" "-f" "67128bb46fd0decf2e787f3989730656457145f16e89d9e4ee95c7ab0208cf6e"`
Dec 18 10:42:03.444 INFO [stdout] 67128bb46fd0decf2e787f3989730656457145f16e89d9e4ee95c7ab0208cf6e