Oct 12 17:53:09.754 INFO checking markcol/leveldb-rs against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 17:53:09.754 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-4/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-4/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/source:ro,Z" "-v" "/mnt/big/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +4021bd0b3c5815b087d6db10ce461e7e4854ade7-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Oct 12 17:53:10.073 INFO blam! 3e48993011e4b487b0a48bb0d9bc8f4b5d0392f0b5d185641a0e9182cb3a7d94
Oct 12 17:53:10.085 INFO running `"docker" "start" "-a" "3e48993011e4b487b0a48bb0d9bc8f4b5d0392f0b5d185641a0e9182cb3a7d94"`
Oct 12 17:53:10.988 INFO kablam! usermod: no changes
Oct 12 17:53:11.172 INFO kablam!    Compiling backtrace-sys v0.1.16
Oct 12 17:53:11.172 INFO kablam!     Checking env_logger v0.5.6
Oct 12 17:53:11.172 INFO kablam!     Checking structopt v0.2.5
Oct 12 17:53:24.645 INFO kablam!     Checking backtrace v0.3.5
Oct 12 17:53:25.130 INFO kablam!     Checking failure v0.1.1
Oct 12 17:53:25.711 INFO kablam!     Checking leveldb-rs v0.1.0 (/source)
Oct 12 17:53:27.420 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 16.41s
Oct 12 17:53:27.430 INFO kablam! su: No module specific data is present
Oct 12 17:53:27.872 INFO running `"docker" "rm" "-f" "3e48993011e4b487b0a48bb0d9bc8f4b5d0392f0b5d185641a0e9182cb3a7d94"`
Oct 12 17:53:28.068 INFO blam! 3e48993011e4b487b0a48bb0d9bc8f4b5d0392f0b5d185641a0e9182cb3a7d94