Dec 19 12:59:43.687 INFO checking matt-williams/enum-from-derive against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 12:59:43.687 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/matt-williams/enum-from-derive:/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 12:59:44.056 INFO [stdout] e9cb1540e01857aae10caa8d21e0511a2ccd82c2311870e379911b941a97291e
Dec 19 12:59:44.059 INFO running `"docker" "start" "-a" "e9cb1540e01857aae10caa8d21e0511a2ccd82c2311870e379911b941a97291e"`
Dec 19 12:59:45.728 INFO [stderr]     Checking quote v0.3.12
Dec 19 12:59:45.740 INFO [stderr]     Checking unicode-xid v0.0.4
Dec 19 12:59:45.740 INFO [stderr]    Compiling syn v0.11.4
Dec 19 12:59:48.629 INFO [stderr]     Checking enum-from-derive v0.1.0 (/opt/crater/workdir)
Dec 19 12:59:51.618 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.92s
Dec 19 12:59:51.982 INFO running `"docker" "inspect" "e9cb1540e01857aae10caa8d21e0511a2ccd82c2311870e379911b941a97291e"`
Dec 19 12:59:52.122 INFO running `"docker" "rm" "-f" "e9cb1540e01857aae10caa8d21e0511a2ccd82c2311870e379911b941a97291e"`
Dec 19 12:59:52.281 INFO [stdout] e9cb1540e01857aae10caa8d21e0511a2ccd82c2311870e379911b941a97291e