Nov 01 13:07:08.781 INFO testing christiansakai/toy_blockchain_rust against 1.30.0 for beta-1.31-1
Nov 01 13:07:08.783 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-1/worker-2/1.30.0:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/beta-1.31-1/1.30.0:/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 +1.30.0 build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 01 13:07:09.098 INFO blam! d3767f10cd5b811213a70d1af718932d2b083564ff2014ab167fb1f455ef99ad
Nov 01 13:07:09.103 INFO running `"docker" "start" "-a" "d3767f10cd5b811213a70d1af718932d2b083564ff2014ab167fb1f455ef99ad"`
Nov 01 13:07:09.662 INFO kablam! usermod: no changes
Nov 01 13:07:09.763 INFO kablam!    Compiling toy_blockchain v0.1.0 (/source)
Nov 01 13:07:10.901 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:10.901 INFO kablam!   --> src/main.rs:16:5
Nov 01 13:07:10.901 INFO kablam!    |
Nov 01 13:07:10.901 INFO kablam! 16 |     io::stdout().flush();
Nov 01 13:07:10.901 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:10.901 INFO kablam!    |
Nov 01 13:07:10.901 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Nov 01 13:07:10.901 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:10.901 INFO kablam! 
Nov 01 13:07:10.901 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:10.901 INFO kablam!   --> src/main.rs:17:5
Nov 01 13:07:10.901 INFO kablam!    |
Nov 01 13:07:10.901 INFO kablam! 17 |     io::stdin().read_line(&mut miner_address);
Nov 01 13:07:10.901 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:10.901 INFO kablam!    |
Nov 01 13:07:10.901 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:10.901 INFO kablam! 
Nov 01 13:07:10.901 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:10.901 INFO kablam!   --> src/main.rs:19:5
Nov 01 13:07:10.901 INFO kablam!    |
Nov 01 13:07:10.901 INFO kablam! 19 |     io::stdout().flush();
Nov 01 13:07:10.901 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:10.901 INFO kablam!    |
Nov 01 13:07:10.901 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:10.901 INFO kablam! 
Nov 01 13:07:10.901 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:10.901 INFO kablam!   --> src/main.rs:20:5
Nov 01 13:07:10.901 INFO kablam!    |
Nov 01 13:07:10.901 INFO kablam! 20 |     io::stdin().read_line(&mut difficulty);
Nov 01 13:07:10.901 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:10.901 INFO kablam!    |
Nov 01 13:07:10.901 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:10.901 INFO kablam! 
Nov 01 13:07:10.902 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:10.902 INFO kablam!   --> src/main.rs:38:9
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam! 38 |         io::stdout().flush();
Nov 01 13:07:10.902 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:10.902 INFO kablam! 
Nov 01 13:07:10.902 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:10.902 INFO kablam!   --> src/main.rs:41:9
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam! 41 |         io::stdin().read_line(&mut choice);
Nov 01 13:07:10.902 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:10.902 INFO kablam! 
Nov 01 13:07:10.902 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:10.902 INFO kablam!   --> src/main.rs:57:17
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam! 57 |                 io::stdout().flush();
Nov 01 13:07:10.902 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:10.902 INFO kablam! 
Nov 01 13:07:10.902 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:10.902 INFO kablam!   --> src/main.rs:58:17
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam! 58 |                 io::stdin().read_line(&mut sender);
Nov 01 13:07:10.902 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:10.902 INFO kablam! 
Nov 01 13:07:10.902 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:10.902 INFO kablam!   --> src/main.rs:60:17
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam! 60 |                 io::stdout().flush();
Nov 01 13:07:10.902 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:10.902 INFO kablam! 
Nov 01 13:07:10.902 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:10.902 INFO kablam!   --> src/main.rs:61:17
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam! 61 |                 io::stdin().read_line(&mut receiver);
Nov 01 13:07:10.902 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:10.902 INFO kablam! 
Nov 01 13:07:10.902 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:10.902 INFO kablam!   --> src/main.rs:63:17
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam! 63 |                 io::stdout().flush();
Nov 01 13:07:10.902 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:10.902 INFO kablam! 
Nov 01 13:07:10.902 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:10.902 INFO kablam!   --> src/main.rs:64:17
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam! 64 |                 io::stdin().read_line(&mut amount);
Nov 01 13:07:10.902 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:10.902 INFO kablam! 
Nov 01 13:07:10.902 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:10.902 INFO kablam!   --> src/main.rs:90:17
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam! 90 |                 io::stdout().flush();
Nov 01 13:07:10.902 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:10.902 INFO kablam! 
Nov 01 13:07:10.902 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:10.902 INFO kablam!   --> src/main.rs:91:17
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam! 91 |                 io::stdin().read_line(&mut new_difficulty);
Nov 01 13:07:10.902 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:10.902 INFO kablam!    |
Nov 01 13:07:10.902 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:10.902 INFO kablam! 
Nov 01 13:07:10.902 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:10.902 INFO kablam!    --> src/main.rs:105:17
Nov 01 13:07:10.902 INFO kablam!     |
Nov 01 13:07:10.902 INFO kablam! 105 |                 io::stdout().flush();
Nov 01 13:07:10.902 INFO kablam!     |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:10.903 INFO kablam!     |
Nov 01 13:07:10.903 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:10.903 INFO kablam! 
Nov 01 13:07:10.903 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:10.903 INFO kablam!    --> src/main.rs:106:17
Nov 01 13:07:10.903 INFO kablam!     |
Nov 01 13:07:10.903 INFO kablam! 106 |                 io::stdin().read_line(&mut new_reward);
Nov 01 13:07:10.903 INFO kablam!     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:10.903 INFO kablam!     |
Nov 01 13:07:10.903 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:10.903 INFO kablam! 
Nov 01 13:07:11.927 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.23s
Nov 01 13:07:11.932 INFO kablam! su: No module specific data is present
Nov 01 13:07:12.611 INFO running `"docker" "rm" "-f" "d3767f10cd5b811213a70d1af718932d2b083564ff2014ab167fb1f455ef99ad"`
Nov 01 13:07:12.847 INFO blam! d3767f10cd5b811213a70d1af718932d2b083564ff2014ab167fb1f455ef99ad
Nov 01 13:07:12.855 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-1/worker-2/1.30.0:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/beta-1.31-1/1.30.0:/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 +1.30.0 test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 01 13:07:13.239 INFO blam! 66ff9ead4875b7d4814bc9191585c5a4fb8885b32f6a6f4149d984dd2e39713d
Nov 01 13:07:13.248 INFO running `"docker" "start" "-a" "66ff9ead4875b7d4814bc9191585c5a4fb8885b32f6a6f4149d984dd2e39713d"`
Nov 01 13:07:14.249 INFO kablam! usermod: no changes
Nov 01 13:07:14.320 INFO kablam!    Compiling toy_blockchain v0.1.0 (/source)
Nov 01 13:07:15.318 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:15.318 INFO kablam!   --> src/main.rs:16:5
Nov 01 13:07:15.318 INFO kablam!    |
Nov 01 13:07:15.319 INFO kablam! 16 |     io::stdout().flush();
Nov 01 13:07:15.319 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:15.319 INFO kablam!    |
Nov 01 13:07:15.320 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Nov 01 13:07:15.320 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:15.320 INFO kablam! 
Nov 01 13:07:15.320 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:15.321 INFO kablam!   --> src/main.rs:17:5
Nov 01 13:07:15.321 INFO kablam!    |
Nov 01 13:07:15.321 INFO kablam! 17 |     io::stdin().read_line(&mut miner_address);
Nov 01 13:07:15.322 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:15.322 INFO kablam!    |
Nov 01 13:07:15.322 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:15.322 INFO kablam! 
Nov 01 13:07:15.323 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:15.323 INFO kablam!   --> src/main.rs:19:5
Nov 01 13:07:15.323 INFO kablam!    |
Nov 01 13:07:15.323 INFO kablam! 19 |     io::stdout().flush();
Nov 01 13:07:15.324 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:15.324 INFO kablam!    |
Nov 01 13:07:15.324 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:15.324 INFO kablam! 
Nov 01 13:07:15.325 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:15.325 INFO kablam!   --> src/main.rs:20:5
Nov 01 13:07:15.325 INFO kablam!    |
Nov 01 13:07:15.325 INFO kablam! 20 |     io::stdin().read_line(&mut difficulty);
Nov 01 13:07:15.326 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:15.326 INFO kablam!    |
Nov 01 13:07:15.326 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:15.327 INFO kablam! 
Nov 01 13:07:15.327 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:15.327 INFO kablam!   --> src/main.rs:38:9
Nov 01 13:07:15.327 INFO kablam!    |
Nov 01 13:07:15.328 INFO kablam! 38 |         io::stdout().flush();
Nov 01 13:07:15.328 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:15.328 INFO kablam!    |
Nov 01 13:07:15.328 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:15.329 INFO kablam! 
Nov 01 13:07:15.329 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:15.329 INFO kablam!   --> src/main.rs:41:9
Nov 01 13:07:15.330 INFO kablam!    |
Nov 01 13:07:15.330 INFO kablam! 41 |         io::stdin().read_line(&mut choice);
Nov 01 13:07:15.330 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:15.330 INFO kablam!    |
Nov 01 13:07:15.331 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:15.331 INFO kablam! 
Nov 01 13:07:15.331 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:15.331 INFO kablam!   --> src/main.rs:57:17
Nov 01 13:07:15.332 INFO kablam!    |
Nov 01 13:07:15.332 INFO kablam! 57 |                 io::stdout().flush();
Nov 01 13:07:15.332 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:15.333 INFO kablam!    |
Nov 01 13:07:15.333 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:15.333 INFO kablam! 
Nov 01 13:07:15.334 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:15.334 INFO kablam!   --> src/main.rs:58:17
Nov 01 13:07:15.334 INFO kablam!    |
Nov 01 13:07:15.334 INFO kablam! 58 |                 io::stdin().read_line(&mut sender);
Nov 01 13:07:15.335 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:15.335 INFO kablam!    |
Nov 01 13:07:15.335 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:15.336 INFO kablam! 
Nov 01 13:07:15.336 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:15.336 INFO kablam!   --> src/main.rs:60:17
Nov 01 13:07:15.337 INFO kablam!    |
Nov 01 13:07:15.337 INFO kablam! 60 |                 io::stdout().flush();
Nov 01 13:07:15.337 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:15.338 INFO kablam!    |
Nov 01 13:07:15.338 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:15.338 INFO kablam! 
Nov 01 13:07:15.339 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:15.339 INFO kablam!   --> src/main.rs:61:17
Nov 01 13:07:15.339 INFO kablam!    |
Nov 01 13:07:15.339 INFO kablam! 61 |                 io::stdin().read_line(&mut receiver);
Nov 01 13:07:15.340 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:15.340 INFO kablam!    |
Nov 01 13:07:15.340 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:15.340 INFO kablam! 
Nov 01 13:07:15.340 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:15.340 INFO kablam!   --> src/main.rs:63:17
Nov 01 13:07:15.340 INFO kablam!    |
Nov 01 13:07:15.340 INFO kablam! 63 |                 io::stdout().flush();
Nov 01 13:07:15.340 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:15.341 INFO kablam!    |
Nov 01 13:07:15.341 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:15.341 INFO kablam! 
Nov 01 13:07:15.341 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:15.341 INFO kablam!   --> src/main.rs:64:17
Nov 01 13:07:15.341 INFO kablam!    |
Nov 01 13:07:15.341 INFO kablam! 64 |                 io::stdin().read_line(&mut amount);
Nov 01 13:07:15.341 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:15.341 INFO kablam!    |
Nov 01 13:07:15.341 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:15.341 INFO kablam! 
Nov 01 13:07:15.341 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:15.341 INFO kablam!   --> src/main.rs:90:17
Nov 01 13:07:15.341 INFO kablam!    |
Nov 01 13:07:15.341 INFO kablam! 90 |                 io::stdout().flush();
Nov 01 13:07:15.341 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:15.341 INFO kablam!    |
Nov 01 13:07:15.341 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:15.341 INFO kablam! 
Nov 01 13:07:15.341 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:15.341 INFO kablam!   --> src/main.rs:91:17
Nov 01 13:07:15.341 INFO kablam!    |
Nov 01 13:07:15.341 INFO kablam! 91 |                 io::stdin().read_line(&mut new_difficulty);
Nov 01 13:07:15.341 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:15.341 INFO kablam!    |
Nov 01 13:07:15.341 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:15.341 INFO kablam! 
Nov 01 13:07:15.341 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:15.341 INFO kablam!    --> src/main.rs:105:17
Nov 01 13:07:15.341 INFO kablam!     |
Nov 01 13:07:15.341 INFO kablam! 105 |                 io::stdout().flush();
Nov 01 13:07:15.341 INFO kablam!     |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:15.341 INFO kablam!     |
Nov 01 13:07:15.341 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:15.341 INFO kablam! 
Nov 01 13:07:15.341 INFO kablam! warning: unused `std::result::Result` which must be used
Nov 01 13:07:15.341 INFO kablam!    --> src/main.rs:106:17
Nov 01 13:07:15.341 INFO kablam!     |
Nov 01 13:07:15.341 INFO kablam! 106 |                 io::stdin().read_line(&mut new_reward);
Nov 01 13:07:15.341 INFO kablam!     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:07:15.341 INFO kablam!     |
Nov 01 13:07:15.341 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:07:15.341 INFO kablam! 
Nov 01 13:07:15.879 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.61s
Nov 01 13:07:15.887 INFO kablam! su: No module specific data is present
Nov 01 13:07:16.559 INFO running `"docker" "rm" "-f" "66ff9ead4875b7d4814bc9191585c5a4fb8885b32f6a6f4149d984dd2e39713d"`
Nov 01 13:07:16.951 INFO blam! 66ff9ead4875b7d4814bc9191585c5a4fb8885b32f6a6f4149d984dd2e39713d
Nov 01 13:07:16.955 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-1/worker-2/1.30.0:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/beta-1.31-1/1.30.0:/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 +1.30.0 test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 01 13:07:17.411 INFO blam! 8c2e76862fddb0ccb33b7f4a6d789fcec236c39f29a60d38ab3656c42fa26f84
Nov 01 13:07:17.413 INFO running `"docker" "start" "-a" "8c2e76862fddb0ccb33b7f4a6d789fcec236c39f29a60d38ab3656c42fa26f84"`
Nov 01 13:07:18.639 INFO kablam! usermod: no changes
Nov 01 13:07:18.775 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
Nov 01 13:07:18.775 INFO kablam!      Running /target/debug/deps/toy_blockchain-1548f8f7812d2ff3
Nov 01 13:07:18.783 INFO kablam! su: No module specific data is present
Nov 01 13:07:18.787 INFO blam! 
Nov 01 13:07:18.787 INFO blam! running 0 tests
Nov 01 13:07:18.787 INFO blam! 
Nov 01 13:07:18.787 INFO blam! test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 01 13:07:18.787 INFO blam! 
Nov 01 13:07:19.450 INFO running `"docker" "rm" "-f" "8c2e76862fddb0ccb33b7f4a6d789fcec236c39f29a60d38ab3656c42fa26f84"`
Nov 01 13:07:19.759 INFO blam! 8c2e76862fddb0ccb33b7f4a6d789fcec236c39f29a60d38ab3656c42fa26f84
