Dec 19 04:56:58.857 INFO checking yoshuawuyts/playground-structopt against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 04:56:58.857 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/yoshuawuyts/playground-structopt:/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 04:56:59.437 INFO [stdout] 0fda9ccf533ed5179b22f517dd3bced722ebb6c3abc26bd05ba7c2964d37f8f7
Dec 19 04:56:59.439 INFO running `"docker" "start" "-a" "0fda9ccf533ed5179b22f517dd3bced722ebb6c3abc26bd05ba7c2964d37f8f7"`
Dec 19 04:57:02.444 INFO [stderr]    Compiling syn v0.11.11
Dec 19 04:57:02.444 INFO [stderr]     Checking structopt v0.1.7
Dec 19 04:57:08.356 INFO [stderr]    Compiling structopt-derive v0.1.6
Dec 19 04:57:10.777 INFO [stderr]     Checking playground-structopt v1.0.0 (/opt/crater/workdir)
Dec 19 04:57:11.128 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.74s
Dec 19 04:57:12.248 INFO running `"docker" "inspect" "0fda9ccf533ed5179b22f517dd3bced722ebb6c3abc26bd05ba7c2964d37f8f7"`
Dec 19 04:57:12.618 INFO running `"docker" "rm" "-f" "0fda9ccf533ed5179b22f517dd3bced722ebb6c3abc26bd05ba7c2964d37f8f7"`
Dec 19 04:57:13.016 INFO [stdout] 0fda9ccf533ed5179b22f517dd3bced722ebb6c3abc26bd05ba7c2964d37f8f7