Dec 05 16:38:10.173 INFO testing lempiy/blockchain against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 05 16:38:10.173 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-2/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 05 16:38:10.708 INFO [stdout] 5a230adaebdd5e9ca5961ce3d866519c888314dde3e685d830784e80ae34120a
Dec 05 16:38:10.718 INFO running `"docker" "start" "-a" "5a230adaebdd5e9ca5961ce3d866519c888314dde3e685d830784e80ae34120a"`
Dec 05 16:38:12.392 INFO [stderr] usermod: no changes
Dec 05 16:38:12.536 INFO [stderr]    Compiling blockchain v0.1.0 (/source)
Dec 05 16:38:13.654 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:13.654 INFO [stderr]   --> src/main.rs:16:5
Dec 05 16:38:13.655 INFO [stderr]    |
Dec 05 16:38:13.655 INFO [stderr] 16 |     io::stdout().flush();
Dec 05 16:38:13.655 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:13.655 INFO [stderr]    |
Dec 05 16:38:13.655 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 16:38:13.655 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:13.655 INFO [stderr] 
Dec 05 16:38:13.655 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:13.655 INFO [stderr]   --> src/main.rs:17:5
Dec 05 16:38:13.655 INFO [stderr]    |
Dec 05 16:38:13.655 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_addr);
Dec 05 16:38:13.655 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:13.655 INFO [stderr]    |
Dec 05 16:38:13.655 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:13.656 INFO [stderr] 
Dec 05 16:38:13.656 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:13.656 INFO [stderr]   --> src/main.rs:20:5
Dec 05 16:38:13.656 INFO [stderr]    |
Dec 05 16:38:13.656 INFO [stderr] 20 |     io::stdout().flush();
Dec 05 16:38:13.656 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:13.656 INFO [stderr]    |
Dec 05 16:38:13.656 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:13.656 INFO [stderr] 
Dec 05 16:38:13.656 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:13.656 INFO [stderr]   --> src/main.rs:21:5
Dec 05 16:38:13.656 INFO [stderr]    |
Dec 05 16:38:13.656 INFO [stderr] 21 |     io::stdin().read_line(&mut difficulty);
Dec 05 16:38:13.656 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:13.656 INFO [stderr]    |
Dec 05 16:38:13.656 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:13.656 INFO [stderr] 
Dec 05 16:38:13.656 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:13.656 INFO [stderr]   --> src/main.rs:36:9
Dec 05 16:38:13.656 INFO [stderr]    |
Dec 05 16:38:13.656 INFO [stderr] 36 |         io::stdout().flush();
Dec 05 16:38:13.656 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:13.656 INFO [stderr]    |
Dec 05 16:38:13.656 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:13.656 INFO [stderr] 
Dec 05 16:38:13.656 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:13.656 INFO [stderr]   --> src/main.rs:38:9
Dec 05 16:38:13.656 INFO [stderr]    |
Dec 05 16:38:13.656 INFO [stderr] 38 |         io::stdin().read_line(&mut choice);
Dec 05 16:38:13.656 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:13.656 INFO [stderr]    |
Dec 05 16:38:13.656 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:13.656 INFO [stderr] 
Dec 05 16:38:13.656 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:13.656 INFO [stderr]   --> src/main.rs:54:17
Dec 05 16:38:13.656 INFO [stderr]    |
Dec 05 16:38:13.656 INFO [stderr] 54 |                 io::stdout().flush();
Dec 05 16:38:13.656 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:13.656 INFO [stderr]    |
Dec 05 16:38:13.656 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:13.656 INFO [stderr] 
Dec 05 16:38:13.656 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:13.656 INFO [stderr]   --> src/main.rs:55:17
Dec 05 16:38:13.656 INFO [stderr]    |
Dec 05 16:38:13.656 INFO [stderr] 55 |                 io::stdin().read_line(&mut sender);
Dec 05 16:38:13.656 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:13.656 INFO [stderr]    |
Dec 05 16:38:13.656 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:13.656 INFO [stderr] 
Dec 05 16:38:13.656 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:13.656 INFO [stderr]   --> src/main.rs:58:17
Dec 05 16:38:13.656 INFO [stderr]    |
Dec 05 16:38:13.656 INFO [stderr] 58 |                 io::stdout().flush();
Dec 05 16:38:13.656 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:13.656 INFO [stderr]    |
Dec 05 16:38:13.656 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:13.656 INFO [stderr] 
Dec 05 16:38:13.656 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:13.656 INFO [stderr]   --> src/main.rs:59:17
Dec 05 16:38:13.656 INFO [stderr]    |
Dec 05 16:38:13.656 INFO [stderr] 59 |                 io::stdin().read_line(&mut reciever);
Dec 05 16:38:13.656 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:13.656 INFO [stderr]    |
Dec 05 16:38:13.656 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:13.656 INFO [stderr] 
Dec 05 16:38:13.656 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:13.656 INFO [stderr]   --> src/main.rs:62:17
Dec 05 16:38:13.656 INFO [stderr]    |
Dec 05 16:38:13.656 INFO [stderr] 62 |                 io::stdout().flush();
Dec 05 16:38:13.657 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:13.657 INFO [stderr]    |
Dec 05 16:38:13.657 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:13.657 INFO [stderr] 
Dec 05 16:38:13.657 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:13.657 INFO [stderr]   --> src/main.rs:63:17
Dec 05 16:38:13.657 INFO [stderr]    |
Dec 05 16:38:13.657 INFO [stderr] 63 |                 io::stdin().read_line(&mut amount);
Dec 05 16:38:13.657 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:13.657 INFO [stderr]    |
Dec 05 16:38:13.657 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:13.657 INFO [stderr] 
Dec 05 16:38:13.657 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:13.657 INFO [stderr]   --> src/main.rs:85:17
Dec 05 16:38:13.657 INFO [stderr]    |
Dec 05 16:38:13.657 INFO [stderr] 85 |                 io::stdout().flush();
Dec 05 16:38:13.657 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:13.657 INFO [stderr]    |
Dec 05 16:38:13.657 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:13.657 INFO [stderr] 
Dec 05 16:38:13.657 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:13.657 INFO [stderr]   --> src/main.rs:86:17
Dec 05 16:38:13.657 INFO [stderr]    |
Dec 05 16:38:13.657 INFO [stderr] 86 |                 io::stdin().read_line(&mut new_diff);
Dec 05 16:38:13.657 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:13.657 INFO [stderr]    |
Dec 05 16:38:13.657 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:13.657 INFO [stderr] 
Dec 05 16:38:13.657 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:13.657 INFO [stderr]   --> src/main.rs:96:17
Dec 05 16:38:13.657 INFO [stderr]    |
Dec 05 16:38:13.657 INFO [stderr] 96 |                 io::stdout().flush();
Dec 05 16:38:13.657 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:13.657 INFO [stderr]    |
Dec 05 16:38:13.657 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:13.657 INFO [stderr] 
Dec 05 16:38:13.657 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:13.657 INFO [stderr]   --> src/main.rs:97:17
Dec 05 16:38:13.657 INFO [stderr]    |
Dec 05 16:38:13.657 INFO [stderr] 97 |                 io::stdin().read_line(&mut new_reward);
Dec 05 16:38:13.657 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:13.657 INFO [stderr]    |
Dec 05 16:38:13.657 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:13.657 INFO [stderr] 
Dec 05 16:38:15.164 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.73s
Dec 05 16:38:15.169 INFO [stderr] su: No module specific data is present
Dec 05 16:38:15.850 INFO running `"docker" "inspect" "5a230adaebdd5e9ca5961ce3d866519c888314dde3e685d830784e80ae34120a"`
Dec 05 16:38:16.108 INFO running `"docker" "rm" "-f" "5a230adaebdd5e9ca5961ce3d866519c888314dde3e685d830784e80ae34120a"`
Dec 05 16:38:16.413 INFO [stdout] 5a230adaebdd5e9ca5961ce3d866519c888314dde3e685d830784e80ae34120a
Dec 05 16:38:16.418 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-2/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 05 16:38:16.850 INFO [stdout] 97ac45ea26502b85b82458d16e183f83f4302cf14ded599eddc4c914ab4fe421
Dec 05 16:38:16.854 INFO running `"docker" "start" "-a" "97ac45ea26502b85b82458d16e183f83f4302cf14ded599eddc4c914ab4fe421"`
Dec 05 16:38:18.595 INFO [stderr] usermod: no changes
Dec 05 16:38:18.704 INFO [stderr]    Compiling blockchain v0.1.0 (/source)
Dec 05 16:38:19.556 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:19.556 INFO [stderr]   --> src/main.rs:16:5
Dec 05 16:38:19.556 INFO [stderr]    |
Dec 05 16:38:19.556 INFO [stderr] 16 |     io::stdout().flush();
Dec 05 16:38:19.556 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:19.556 INFO [stderr]    |
Dec 05 16:38:19.556 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 16:38:19.556 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:19.556 INFO [stderr] 
Dec 05 16:38:19.556 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:19.556 INFO [stderr]   --> src/main.rs:17:5
Dec 05 16:38:19.556 INFO [stderr]    |
Dec 05 16:38:19.556 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_addr);
Dec 05 16:38:19.556 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:19.556 INFO [stderr]    |
Dec 05 16:38:19.556 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:19.556 INFO [stderr] 
Dec 05 16:38:19.556 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:19.556 INFO [stderr]   --> src/main.rs:20:5
Dec 05 16:38:19.556 INFO [stderr]    |
Dec 05 16:38:19.556 INFO [stderr] 20 |     io::stdout().flush();
Dec 05 16:38:19.556 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:19.556 INFO [stderr]    |
Dec 05 16:38:19.556 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:19.556 INFO [stderr] 
Dec 05 16:38:19.556 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:19.556 INFO [stderr]   --> src/main.rs:21:5
Dec 05 16:38:19.556 INFO [stderr]    |
Dec 05 16:38:19.556 INFO [stderr] 21 |     io::stdin().read_line(&mut difficulty);
Dec 05 16:38:19.556 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:19.556 INFO [stderr]    |
Dec 05 16:38:19.556 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:19.556 INFO [stderr] 
Dec 05 16:38:19.556 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:19.556 INFO [stderr]   --> src/main.rs:36:9
Dec 05 16:38:19.556 INFO [stderr]    |
Dec 05 16:38:19.556 INFO [stderr] 36 |         io::stdout().flush();
Dec 05 16:38:19.556 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:19.556 INFO [stderr]    |
Dec 05 16:38:19.556 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:19.557 INFO [stderr] 
Dec 05 16:38:19.557 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:19.557 INFO [stderr]   --> src/main.rs:38:9
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr] 38 |         io::stdin().read_line(&mut choice);
Dec 05 16:38:19.557 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:19.557 INFO [stderr] 
Dec 05 16:38:19.557 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:19.557 INFO [stderr]   --> src/main.rs:54:17
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr] 54 |                 io::stdout().flush();
Dec 05 16:38:19.557 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:19.557 INFO [stderr] 
Dec 05 16:38:19.557 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:19.557 INFO [stderr]   --> src/main.rs:55:17
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr] 55 |                 io::stdin().read_line(&mut sender);
Dec 05 16:38:19.557 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:19.557 INFO [stderr] 
Dec 05 16:38:19.557 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:19.557 INFO [stderr]   --> src/main.rs:58:17
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr] 58 |                 io::stdout().flush();
Dec 05 16:38:19.557 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:19.557 INFO [stderr] 
Dec 05 16:38:19.557 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:19.557 INFO [stderr]   --> src/main.rs:59:17
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr] 59 |                 io::stdin().read_line(&mut reciever);
Dec 05 16:38:19.557 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:19.557 INFO [stderr] 
Dec 05 16:38:19.557 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:19.557 INFO [stderr]   --> src/main.rs:62:17
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr] 62 |                 io::stdout().flush();
Dec 05 16:38:19.557 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:19.557 INFO [stderr] 
Dec 05 16:38:19.557 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:19.557 INFO [stderr]   --> src/main.rs:63:17
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr] 63 |                 io::stdin().read_line(&mut amount);
Dec 05 16:38:19.557 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:19.557 INFO [stderr] 
Dec 05 16:38:19.557 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:19.557 INFO [stderr]   --> src/main.rs:85:17
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr] 85 |                 io::stdout().flush();
Dec 05 16:38:19.557 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:19.557 INFO [stderr] 
Dec 05 16:38:19.557 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:19.557 INFO [stderr]   --> src/main.rs:86:17
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr] 86 |                 io::stdin().read_line(&mut new_diff);
Dec 05 16:38:19.557 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:19.557 INFO [stderr] 
Dec 05 16:38:19.557 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:19.557 INFO [stderr]   --> src/main.rs:96:17
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr] 96 |                 io::stdout().flush();
Dec 05 16:38:19.557 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:19.557 INFO [stderr] 
Dec 05 16:38:19.557 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:38:19.557 INFO [stderr]   --> src/main.rs:97:17
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr] 97 |                 io::stdin().read_line(&mut new_reward);
Dec 05 16:38:19.557 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:38:19.557 INFO [stderr]    |
Dec 05 16:38:19.557 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:38:19.557 INFO [stderr] 
Dec 05 16:38:19.864 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
Dec 05 16:38:19.879 INFO [stderr] su: No module specific data is present
Dec 05 16:38:21.024 INFO running `"docker" "inspect" "97ac45ea26502b85b82458d16e183f83f4302cf14ded599eddc4c914ab4fe421"`
Dec 05 16:38:21.502 INFO running `"docker" "rm" "-f" "97ac45ea26502b85b82458d16e183f83f4302cf14ded599eddc4c914ab4fe421"`
Dec 05 16:38:21.728 INFO [stdout] 97ac45ea26502b85b82458d16e183f83f4302cf14ded599eddc4c914ab4fe421
Dec 05 16:38:21.732 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-2/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 05 16:38:22.178 INFO [stdout] 2d3075302a39f9fadf561078bb7e53638bc4bce571b54e88cbc4a86fee073e6c
Dec 05 16:38:22.180 INFO running `"docker" "start" "-a" "2d3075302a39f9fadf561078bb7e53638bc4bce571b54e88cbc4a86fee073e6c"`
Dec 05 16:38:23.362 INFO [stderr] usermod: no changes
Dec 05 16:38:23.484 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
Dec 05 16:38:23.496 INFO [stderr]      Running /target/debug/deps/blockchain-b0bba604e3e490db
Dec 05 16:38:23.496 INFO [stdout] 
Dec 05 16:38:23.496 INFO [stderr] su: No module specific data is present
Dec 05 16:38:23.496 INFO [stdout] running 0 tests
Dec 05 16:38:23.496 INFO [stdout] 
Dec 05 16:38:23.496 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 16:38:23.496 INFO [stdout] 
Dec 05 16:38:24.762 INFO running `"docker" "inspect" "2d3075302a39f9fadf561078bb7e53638bc4bce571b54e88cbc4a86fee073e6c"`
Dec 05 16:38:25.105 INFO running `"docker" "rm" "-f" "2d3075302a39f9fadf561078bb7e53638bc4bce571b54e88cbc4a86fee073e6c"`
Dec 05 16:38:25.432 INFO [stdout] 2d3075302a39f9fadf561078bb7e53638bc4bce571b54e88cbc4a86fee073e6c