Dec 19 15:18:15.417 INFO checking jearbear/dots against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 15:18:15.417 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/jearbear/dots:/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 15:18:15.847 INFO [stdout] 6b7ac4bacfa45330628f76cd115fe3c10445d7ea704e6d41521f6fbe101a9735
Dec 19 15:18:15.850 INFO running `"docker" "start" "-a" "6b7ac4bacfa45330628f76cd115fe3c10445d7ea704e6d41521f6fbe101a9735"`
Dec 19 15:18:17.987 INFO [stderr]    Compiling structopt-derive v0.2.14
Dec 19 15:18:21.828 INFO [stderr]     Checking structopt v0.2.14
Dec 19 15:18:22.196 INFO [stderr]     Checking dots v0.1.0 (/opt/crater/workdir)
Dec 19 15:18:23.353 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.51s
Dec 19 15:18:24.040 INFO running `"docker" "inspect" "6b7ac4bacfa45330628f76cd115fe3c10445d7ea704e6d41521f6fbe101a9735"`
Dec 19 15:18:24.391 INFO running `"docker" "rm" "-f" "6b7ac4bacfa45330628f76cd115fe3c10445d7ea704e6d41521f6fbe101a9735"`
Dec 19 15:18:24.784 INFO [stdout] 6b7ac4bacfa45330628f76cd115fe3c10445d7ea704e6d41521f6fbe101a9735