Dec 13 21:39:14.130 INFO testing dennisfurrer/RustBlockchain against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 13 21:39:14.130 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 13 21:39:14.387 INFO [stdout] 38a9ed8267c6f8cd7e07358f5437573d18958e6c8d5b87b28b50e0e26319b853
Dec 13 21:39:14.387 INFO running `"docker" "start" "-a" "38a9ed8267c6f8cd7e07358f5437573d18958e6c8d5b87b28b50e0e26319b853"`
Dec 13 21:39:14.955 INFO [stderr] usermod: no changes
Dec 13 21:39:15.041 INFO [stderr]    Compiling blockchain v0.1.0 (/source)
Dec 13 21:39:15.969 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:15.970 INFO [stderr]   --> src/main.rs:18:5
Dec 13 21:39:15.970 INFO [stderr]    |
Dec 13 21:39:15.970 INFO [stderr] 18 |     io::stdout().flush();
Dec 13 21:39:15.970 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:15.970 INFO [stderr]    |
Dec 13 21:39:15.970 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 13 21:39:15.970 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:15.970 INFO [stderr] 
Dec 13 21:39:15.970 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:15.970 INFO [stderr]   --> src/main.rs:19:5
Dec 13 21:39:15.970 INFO [stderr]    |
Dec 13 21:39:15.970 INFO [stderr] 19 |     io::stdin().read_line(&mut miner_address);
Dec 13 21:39:15.970 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:15.970 INFO [stderr]    |
Dec 13 21:39:15.970 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:15.970 INFO [stderr] 
Dec 13 21:39:15.970 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:15.970 INFO [stderr]   --> src/main.rs:21:5
Dec 13 21:39:15.970 INFO [stderr]    |
Dec 13 21:39:15.970 INFO [stderr] 21 |     io::stdout().flush();
Dec 13 21:39:15.970 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:15.970 INFO [stderr]    |
Dec 13 21:39:15.970 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:15.970 INFO [stderr] 
Dec 13 21:39:15.971 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:15.971 INFO [stderr]   --> src/main.rs:22:5
Dec 13 21:39:15.971 INFO [stderr]    |
Dec 13 21:39:15.971 INFO [stderr] 22 |     io::stdin().read_line(&mut difficulty);
Dec 13 21:39:15.971 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:15.971 INFO [stderr]    |
Dec 13 21:39:15.971 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:15.971 INFO [stderr] 
Dec 13 21:39:15.971 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:15.971 INFO [stderr]   --> src/main.rs:38:9
Dec 13 21:39:15.971 INFO [stderr]    |
Dec 13 21:39:15.971 INFO [stderr] 38 |         io::stdout().flush();
Dec 13 21:39:15.971 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:15.972 INFO [stderr]    |
Dec 13 21:39:15.972 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:15.972 INFO [stderr] 
Dec 13 21:39:15.972 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:15.972 INFO [stderr]   --> src/main.rs:40:9
Dec 13 21:39:15.972 INFO [stderr]    |
Dec 13 21:39:15.972 INFO [stderr] 40 |         io::stdin().read_line(&mut choice);
Dec 13 21:39:15.972 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:15.972 INFO [stderr]    |
Dec 13 21:39:15.972 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:15.972 INFO [stderr] 
Dec 13 21:39:15.972 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:15.972 INFO [stderr]   --> src/main.rs:71:17
Dec 13 21:39:15.972 INFO [stderr]    |
Dec 13 21:39:15.972 INFO [stderr] 71 |                 io::stdout().flush();
Dec 13 21:39:15.972 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:15.973 INFO [stderr]    |
Dec 13 21:39:15.973 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:15.973 INFO [stderr] 
Dec 13 21:39:15.973 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:15.973 INFO [stderr]   --> src/main.rs:72:17
Dec 13 21:39:15.973 INFO [stderr]    |
Dec 13 21:39:15.973 INFO [stderr] 72 |                 io::stdin().read_line(&mut from);
Dec 13 21:39:15.973 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:15.973 INFO [stderr]    |
Dec 13 21:39:15.973 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:15.973 INFO [stderr] 
Dec 13 21:39:15.973 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:15.973 INFO [stderr]   --> src/main.rs:74:17
Dec 13 21:39:15.973 INFO [stderr]    |
Dec 13 21:39:15.973 INFO [stderr] 74 |                 io::stdout().flush();
Dec 13 21:39:15.973 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:15.973 INFO [stderr]    |
Dec 13 21:39:15.973 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:15.973 INFO [stderr] 
Dec 13 21:39:15.973 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:15.973 INFO [stderr]   --> src/main.rs:75:17
Dec 13 21:39:15.973 INFO [stderr]    |
Dec 13 21:39:15.973 INFO [stderr] 75 |                 io::stdin().read_line(&mut to);
Dec 13 21:39:15.973 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:15.973 INFO [stderr]    |
Dec 13 21:39:15.973 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:15.974 INFO [stderr] 
Dec 13 21:39:15.974 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:15.974 INFO [stderr]   --> src/main.rs:77:17
Dec 13 21:39:15.974 INFO [stderr]    |
Dec 13 21:39:15.974 INFO [stderr] 77 |                 io::stdout().flush();
Dec 13 21:39:15.974 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:15.974 INFO [stderr]    |
Dec 13 21:39:15.974 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:15.974 INFO [stderr] 
Dec 13 21:39:15.974 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:15.974 INFO [stderr]   --> src/main.rs:78:17
Dec 13 21:39:15.974 INFO [stderr]    |
Dec 13 21:39:15.974 INFO [stderr] 78 |                 io::stdin().read_line(&mut amount);
Dec 13 21:39:15.974 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:15.974 INFO [stderr]    |
Dec 13 21:39:15.974 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:15.974 INFO [stderr] 
Dec 13 21:39:15.974 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:15.974 INFO [stderr]    --> src/main.rs:106:17
Dec 13 21:39:15.974 INFO [stderr]     |
Dec 13 21:39:15.974 INFO [stderr] 106 |                 io::stdout().flush();
Dec 13 21:39:15.974 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:15.974 INFO [stderr]     |
Dec 13 21:39:15.974 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:15.974 INFO [stderr] 
Dec 13 21:39:15.974 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:15.974 INFO [stderr]    --> src/main.rs:107:17
Dec 13 21:39:15.974 INFO [stderr]     |
Dec 13 21:39:15.974 INFO [stderr] 107 |                 io::stdin().read_line(&mut new_diff);
Dec 13 21:39:15.974 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:15.974 INFO [stderr]     |
Dec 13 21:39:15.974 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:15.975 INFO [stderr] 
Dec 13 21:39:15.975 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:15.975 INFO [stderr]    --> src/main.rs:119:17
Dec 13 21:39:15.975 INFO [stderr]     |
Dec 13 21:39:15.975 INFO [stderr] 119 |                 io::stdout().flush();
Dec 13 21:39:15.975 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:15.975 INFO [stderr]     |
Dec 13 21:39:15.975 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:15.975 INFO [stderr] 
Dec 13 21:39:15.975 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:15.975 INFO [stderr]    --> src/main.rs:120:17
Dec 13 21:39:15.975 INFO [stderr]     |
Dec 13 21:39:15.975 INFO [stderr] 120 |                 io::stdin().read_line(&mut new_reward);
Dec 13 21:39:15.975 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:15.979 INFO [stderr]     |
Dec 13 21:39:15.979 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:15.979 INFO [stderr] 
Dec 13 21:39:17.079 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.10s
Dec 13 21:39:17.079 INFO [stderr] su: No module specific data is present
Dec 13 21:39:18.023 INFO running `"docker" "inspect" "38a9ed8267c6f8cd7e07358f5437573d18958e6c8d5b87b28b50e0e26319b853"`
Dec 13 21:39:18.254 INFO running `"docker" "rm" "-f" "38a9ed8267c6f8cd7e07358f5437573d18958e6c8d5b87b28b50e0e26319b853"`
Dec 13 21:39:18.475 INFO [stdout] 38a9ed8267c6f8cd7e07358f5437573d18958e6c8d5b87b28b50e0e26319b853
Dec 13 21:39:18.477 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 13 21:39:18.931 INFO [stdout] cc3fed9259bf27397d3e13f39e9852c54a4085f188ca18e72abb03c2bf67a62b
Dec 13 21:39:18.943 INFO running `"docker" "start" "-a" "cc3fed9259bf27397d3e13f39e9852c54a4085f188ca18e72abb03c2bf67a62b"`
Dec 13 21:39:20.131 INFO [stderr] usermod: no changes
Dec 13 21:39:20.227 INFO [stderr]    Compiling blockchain v0.1.0 (/source)
Dec 13 21:39:21.295 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:21.295 INFO [stderr]   --> src/main.rs:18:5
Dec 13 21:39:21.295 INFO [stderr]    |
Dec 13 21:39:21.295 INFO [stderr] 18 |     io::stdout().flush();
Dec 13 21:39:21.295 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:21.295 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 13 21:39:21.296 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:21.296 INFO [stderr] 
Dec 13 21:39:21.296 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:21.296 INFO [stderr]   --> src/main.rs:19:5
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr] 19 |     io::stdin().read_line(&mut miner_address);
Dec 13 21:39:21.296 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:21.296 INFO [stderr] 
Dec 13 21:39:21.296 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:21.296 INFO [stderr]   --> src/main.rs:21:5
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr] 21 |     io::stdout().flush();
Dec 13 21:39:21.296 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:21.296 INFO [stderr] 
Dec 13 21:39:21.296 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:21.296 INFO [stderr]   --> src/main.rs:22:5
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr] 22 |     io::stdin().read_line(&mut difficulty);
Dec 13 21:39:21.296 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:21.296 INFO [stderr] 
Dec 13 21:39:21.296 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:21.296 INFO [stderr]   --> src/main.rs:38:9
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr] 38 |         io::stdout().flush();
Dec 13 21:39:21.296 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:21.296 INFO [stderr] 
Dec 13 21:39:21.296 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:21.296 INFO [stderr]   --> src/main.rs:40:9
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr] 40 |         io::stdin().read_line(&mut choice);
Dec 13 21:39:21.296 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:21.296 INFO [stderr] 
Dec 13 21:39:21.296 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:21.296 INFO [stderr]   --> src/main.rs:71:17
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr] 71 |                 io::stdout().flush();
Dec 13 21:39:21.296 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:21.296 INFO [stderr] 
Dec 13 21:39:21.296 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:21.296 INFO [stderr]   --> src/main.rs:72:17
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr] 72 |                 io::stdin().read_line(&mut from);
Dec 13 21:39:21.296 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:21.296 INFO [stderr] 
Dec 13 21:39:21.296 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:21.296 INFO [stderr]   --> src/main.rs:74:17
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr] 74 |                 io::stdout().flush();
Dec 13 21:39:21.296 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:21.296 INFO [stderr] 
Dec 13 21:39:21.296 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:21.296 INFO [stderr]   --> src/main.rs:75:17
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr] 75 |                 io::stdin().read_line(&mut to);
Dec 13 21:39:21.296 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:21.296 INFO [stderr] 
Dec 13 21:39:21.296 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:21.296 INFO [stderr]   --> src/main.rs:77:17
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr] 77 |                 io::stdout().flush();
Dec 13 21:39:21.296 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:21.296 INFO [stderr] 
Dec 13 21:39:21.296 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:21.296 INFO [stderr]   --> src/main.rs:78:17
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.296 INFO [stderr] 78 |                 io::stdin().read_line(&mut amount);
Dec 13 21:39:21.296 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:21.296 INFO [stderr]    |
Dec 13 21:39:21.297 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:21.297 INFO [stderr] 
Dec 13 21:39:21.297 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:21.297 INFO [stderr]    --> src/main.rs:106:17
Dec 13 21:39:21.297 INFO [stderr]     |
Dec 13 21:39:21.297 INFO [stderr] 106 |                 io::stdout().flush();
Dec 13 21:39:21.297 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:21.297 INFO [stderr]     |
Dec 13 21:39:21.297 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:21.297 INFO [stderr] 
Dec 13 21:39:21.297 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:21.297 INFO [stderr]    --> src/main.rs:107:17
Dec 13 21:39:21.297 INFO [stderr]     |
Dec 13 21:39:21.297 INFO [stderr] 107 |                 io::stdin().read_line(&mut new_diff);
Dec 13 21:39:21.297 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:21.297 INFO [stderr]     |
Dec 13 21:39:21.297 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:21.297 INFO [stderr] 
Dec 13 21:39:21.297 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:21.297 INFO [stderr]    --> src/main.rs:119:17
Dec 13 21:39:21.297 INFO [stderr]     |
Dec 13 21:39:21.297 INFO [stderr] 119 |                 io::stdout().flush();
Dec 13 21:39:21.297 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:21.297 INFO [stderr]     |
Dec 13 21:39:21.297 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:21.297 INFO [stderr] 
Dec 13 21:39:21.297 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:39:21.297 INFO [stderr]    --> src/main.rs:120:17
Dec 13 21:39:21.297 INFO [stderr]     |
Dec 13 21:39:21.297 INFO [stderr] 120 |                 io::stdin().read_line(&mut new_reward);
Dec 13 21:39:21.297 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:39:21.297 INFO [stderr]     |
Dec 13 21:39:21.297 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:39:21.297 INFO [stderr] 
Dec 13 21:39:21.536 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.38s
Dec 13 21:39:21.541 INFO [stderr] su: No module specific data is present
Dec 13 21:39:21.840 INFO running `"docker" "inspect" "cc3fed9259bf27397d3e13f39e9852c54a4085f188ca18e72abb03c2bf67a62b"`
Dec 13 21:39:21.975 INFO running `"docker" "rm" "-f" "cc3fed9259bf27397d3e13f39e9852c54a4085f188ca18e72abb03c2bf67a62b"`
Dec 13 21:39:22.309 INFO [stdout] cc3fed9259bf27397d3e13f39e9852c54a4085f188ca18e72abb03c2bf67a62b
Dec 13 21:39:22.316 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --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 13 21:39:22.646 INFO [stdout] 6ae37f84650f66fda472c7a4c4ca15c068a7a1233b01384f54c056e3796dcdd0
Dec 13 21:39:22.648 INFO running `"docker" "start" "-a" "6ae37f84650f66fda472c7a4c4ca15c068a7a1233b01384f54c056e3796dcdd0"`
Dec 13 21:39:23.808 INFO [stderr] usermod: no changes
Dec 13 21:39:23.872 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
Dec 13 21:39:23.884 INFO [stderr]      Running /target/debug/deps/blockchain-0d8c61262384c1aa
Dec 13 21:39:23.886 INFO [stdout] 
Dec 13 21:39:23.886 INFO [stdout] running 0 tests
Dec 13 21:39:23.886 INFO [stdout] 
Dec 13 21:39:23.886 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 21:39:23.886 INFO [stdout] 
Dec 13 21:39:23.887 INFO [stderr] su: No module specific data is present
Dec 13 21:39:24.216 INFO running `"docker" "inspect" "6ae37f84650f66fda472c7a4c4ca15c068a7a1233b01384f54c056e3796dcdd0"`
Dec 13 21:39:24.281 INFO running `"docker" "rm" "-f" "6ae37f84650f66fda472c7a4c4ca15c068a7a1233b01384f54c056e3796dcdd0"`
Dec 13 21:39:24.345 INFO [stdout] 6ae37f84650f66fda472c7a4c4ca15c068a7a1233b01384f54c056e3796dcdd0