Oct 31 20:04:02.014 INFO checking taku-shimomura/building_vm against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Oct 31 20:04:02.016 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-3/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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 31 20:04:02.485 INFO blam! 992383c39873c8022a55657a510e9bc0820cb29155bea1b9c6cca0c308f187bb
Oct 31 20:04:02.501 INFO running `"docker" "start" "-a" "992383c39873c8022a55657a510e9bc0820cb29155bea1b9c6cca0c308f187bb"`
Oct 31 20:04:03.564 INFO kablam! usermod: no changes
Oct 31 20:04:03.624 INFO kablam!     Checking building_vm v0.1.0 (/source)
Oct 31 20:04:03.844 INFO kablam! warning: field is never used: `registers`
Oct 31 20:04:03.844 INFO kablam!  --> src/vm.rs:2:5
Oct 31 20:04:03.844 INFO kablam!   |
Oct 31 20:04:03.844 INFO kablam! 2 |     registers: [i32; 32]
Oct 31 20:04:03.844 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Oct 31 20:04:03.844 INFO kablam!   |
Oct 31 20:04:03.844 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 31 20:04:03.844 INFO kablam! 
Oct 31 20:04:03.961 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
Oct 31 20:04:03.964 INFO kablam! su: No module specific data is present
Oct 31 20:04:04.446 INFO running `"docker" "rm" "-f" "992383c39873c8022a55657a510e9bc0820cb29155bea1b9c6cca0c308f187bb"`
Oct 31 20:04:04.696 INFO blam! 992383c39873c8022a55657a510e9bc0820cb29155bea1b9c6cca0c308f187bb