Dec 15 09:04:23.873 INFO testing hbs-pow-0.2.0 against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 15 09:04:23.873 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-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"`
Dec 15 09:04:24.345 INFO [stdout] 5c9bd54f4e7f2320fbf37c65e14875a7c9011f6e984d40ff5df400b50122299f
Dec 15 09:04:24.348 INFO running `"docker" "start" "-a" "5c9bd54f4e7f2320fbf37c65e14875a7c9011f6e984d40ff5df400b50122299f"`
Dec 15 09:04:25.784 INFO [stderr] usermod: no changes
Dec 15 09:04:25.852 INFO [stderr]    Compiling hbs-pow-sys v0.2.1
Dec 15 09:04:32.621 INFO [stderr]    Compiling hbs-pow v0.2.0 (/source)
Dec 15 09:04:33.571 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.76s
Dec 15 09:04:33.572 INFO [stderr] su: No module specific data is present
Dec 15 09:04:34.045 INFO running `"docker" "inspect" "5c9bd54f4e7f2320fbf37c65e14875a7c9011f6e984d40ff5df400b50122299f"`
Dec 15 09:04:34.237 INFO running `"docker" "rm" "-f" "5c9bd54f4e7f2320fbf37c65e14875a7c9011f6e984d40ff5df400b50122299f"`
Dec 15 09:04:34.545 INFO [stdout] 5c9bd54f4e7f2320fbf37c65e14875a7c9011f6e984d40ff5df400b50122299f
Dec 15 09:04:34.549 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-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"`
Dec 15 09:04:34.869 INFO [stdout] 7ccefaff6d1fc9dd9b2b5962606d74e42235af2ccf9d1f8aa148b17e567e6cdf
Dec 15 09:04:34.874 INFO running `"docker" "start" "-a" "7ccefaff6d1fc9dd9b2b5962606d74e42235af2ccf9d1f8aa148b17e567e6cdf"`
Dec 15 09:04:35.447 INFO [stderr] usermod: no changes
Dec 15 09:04:35.491 INFO [stderr]    Compiling hbs-pow v0.2.0 (/source)
Dec 15 09:04:36.305 INFO [stderr] warning: static variable `received_cb` should have an upper case name such as `RECEIVED_CB`
Dec 15 09:04:36.305 INFO [stderr]    --> lib.rs:212:9
Dec 15 09:04:36.305 INFO [stderr]     |
Dec 15 09:04:36.305 INFO [stderr] 212 |         static mut received_cb: bool = false;
Dec 15 09:04:36.305 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 15 09:04:36.305 INFO [stderr] 
Dec 15 09:04:36.765 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.30s
Dec 15 09:04:36.768 INFO [stderr] su: No module specific data is present
Dec 15 09:04:37.173 INFO running `"docker" "inspect" "7ccefaff6d1fc9dd9b2b5962606d74e42235af2ccf9d1f8aa148b17e567e6cdf"`
Dec 15 09:04:37.292 INFO running `"docker" "rm" "-f" "7ccefaff6d1fc9dd9b2b5962606d74e42235af2ccf9d1f8aa148b17e567e6cdf"`
Dec 15 09:04:37.438 INFO [stdout] 7ccefaff6d1fc9dd9b2b5962606d74e42235af2ccf9d1f8aa148b17e567e6cdf