Nov 01 15:07:36.451 INFO checking threading-0.1.2 against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Nov 01 15:07:36.452 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-4/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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"`
Nov 01 15:07:36.681 INFO blam! 40ec26364ebaaf2a7cb69efe4cafb504a6e6470ee26b59406ad8e8194c6ae5a2
Nov 01 15:07:36.684 INFO running `"docker" "start" "-a" "40ec26364ebaaf2a7cb69efe4cafb504a6e6470ee26b59406ad8e8194c6ae5a2"`
Nov 01 15:07:37.383 INFO kablam! usermod: no changes
Nov 01 15:07:37.420 INFO kablam!     Checking threading v0.1.2 (/source)
Nov 01 15:07:38.133 INFO kablam! warning: unused arithmetic operation that must be used
Nov 01 15:07:38.134 INFO kablam!    --> src/lib.rs:165:13
Nov 01 15:07:38.134 INFO kablam!     |
Nov 01 15:07:38.134 INFO kablam! 165 |             i * i;
Nov 01 15:07:38.134 INFO kablam!     |             ^^^^^
Nov 01 15:07:38.134 INFO kablam!     |
Nov 01 15:07:38.134 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Nov 01 15:07:38.134 INFO kablam! 
Nov 01 15:07:38.144 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
Nov 01 15:07:38.148 INFO kablam! su: No module specific data is present
Nov 01 15:07:38.434 INFO running `"docker" "rm" "-f" "40ec26364ebaaf2a7cb69efe4cafb504a6e6470ee26b59406ad8e8194c6ae5a2"`
Nov 01 15:07:38.548 INFO blam! 40ec26364ebaaf2a7cb69efe4cafb504a6e6470ee26b59406ad8e8194c6ae5a2