Dec 19 19:12:33.747 INFO checking cesare/helixexp against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 19:12:33.747 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/cesare/helixexp:/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 19:12:34.171 INFO [stdout] e3fcd02246f1b80683f0e093c7d9a04c10ca9c91d29710137495174a789d71c9
Dec 19 19:12:34.174 INFO running `"docker" "start" "-a" "e3fcd02246f1b80683f0e093c7d9a04c10ca9c91d29710137495174a789d71c9"`
Dec 19 19:12:35.565 INFO [stderr]    Compiling libcruby-sys v0.6.3
Dec 19 19:12:35.565 INFO [stderr]     Checking cslice v0.3.0
Dec 19 19:12:35.565 INFO [stderr]     Checking cstr-macro v0.1.0
Dec 19 19:12:37.384 INFO [stderr]     Checking helix v0.6.3
Dec 19 19:12:37.726 INFO [stderr]     Checking helixexp v0.1.0 (/opt/crater/workdir)
Dec 19 19:12:38.210 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.70s
Dec 19 19:12:39.608 INFO running `"docker" "inspect" "e3fcd02246f1b80683f0e093c7d9a04c10ca9c91d29710137495174a789d71c9"`
Dec 19 19:12:39.886 INFO running `"docker" "rm" "-f" "e3fcd02246f1b80683f0e093c7d9a04c10ca9c91d29710137495174a789d71c9"`
Dec 19 19:12:40.200 INFO [stdout] e3fcd02246f1b80683f0e093c7d9a04c10ca9c91d29710137495174a789d71c9