Dec 19 16:02:44.972 INFO checking holmandw/velg against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 16:02:44.972 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/holmandw/velg:/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 16:02:45.232 INFO [stdout] 72382f2cecc6280a04476a39330c12edc15b792637764d529a2ff1079bc38dca
Dec 19 16:02:45.238 INFO running `"docker" "start" "-a" "72382f2cecc6280a04476a39330c12edc15b792637764d529a2ff1079bc38dca"`
Dec 19 16:02:46.957 INFO [stderr]    Compiling syn v0.15.18
Dec 19 16:02:46.957 INFO [stderr]     Checking regex v1.0.5
Dec 19 16:02:56.804 INFO [stderr]    Compiling serde_derive v1.0.80
Dec 19 16:03:12.176 INFO [stderr]     Checking docopt v1.0.2
Dec 19 16:03:13.688 INFO [stderr]     Checking velg v0.1.0 (/opt/crater/workdir)
Dec 19 16:03:14.485 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.65s
Dec 19 16:03:15.528 INFO running `"docker" "inspect" "72382f2cecc6280a04476a39330c12edc15b792637764d529a2ff1079bc38dca"`
Dec 19 16:03:15.728 INFO running `"docker" "rm" "-f" "72382f2cecc6280a04476a39330c12edc15b792637764d529a2ff1079bc38dca"`
Dec 19 16:03:16.072 INFO [stdout] 72382f2cecc6280a04476a39330c12edc15b792637764d529a2ff1079bc38dca