Dec 04 15:12:54.144 INFO checking lezwon/Blockchain-from-Scratch against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 15:12:54.144 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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"`
Dec 04 15:12:54.653 INFO [stdout] 304ac7660e074f12e1242755122fbea5cb83aaa8a35b5987614f06fcb179b35e
Dec 04 15:12:54.661 INFO running `"docker" "start" "-a" "304ac7660e074f12e1242755122fbea5cb83aaa8a35b5987614f06fcb179b35e"`
Dec 04 15:12:55.796 INFO [stderr] usermod: no changes
Dec 04 15:12:55.935 INFO [stderr]     Checking blockchain-rust v0.1.0 (/source)
Dec 04 15:12:57.315 INFO [stderr] warning: variable does not need to be mutable
Dec 04 15:12:57.315 INFO [stderr]   --> src/main.rs:94:8
Dec 04 15:12:57.315 INFO [stderr]    |
Dec 04 15:12:57.315 INFO [stderr] 94 |             let mut block_header = BlockHeader{
Dec 04 15:12:57.315 INFO [stderr]    |                 ----^^^^^^^^^^^^
Dec 04 15:12:57.315 INFO [stderr]    |                 |
Dec 04 15:12:57.315 INFO [stderr]    |                 help: remove this `mut`
Dec 04 15:12:57.315 INFO [stderr]    |
Dec 04 15:12:57.315 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 15:12:57.315 INFO [stderr] 
Dec 04 15:12:57.329 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.329 INFO [stderr]    --> src/main.rs:210:2
Dec 04 15:12:57.329 INFO [stderr]     |
Dec 04 15:12:57.329 INFO [stderr] 210 |     io::stdout().flush();
Dec 04 15:12:57.329 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.329 INFO [stderr]     |
Dec 04 15:12:57.329 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 15:12:57.329 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.329 INFO [stderr] 
Dec 04 15:12:57.329 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.329 INFO [stderr]    --> src/main.rs:211:2
Dec 04 15:12:57.329 INFO [stderr]     |
Dec 04 15:12:57.329 INFO [stderr] 211 |     io::stdin().read_line(&mut miner_address);
Dec 04 15:12:57.329 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.329 INFO [stderr]     |
Dec 04 15:12:57.329 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.329 INFO [stderr] 
Dec 04 15:12:57.329 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.329 INFO [stderr]    --> src/main.rs:213:2
Dec 04 15:12:57.329 INFO [stderr]     |
Dec 04 15:12:57.329 INFO [stderr] 213 |     io::stdout().flush();
Dec 04 15:12:57.329 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.329 INFO [stderr]     |
Dec 04 15:12:57.329 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.329 INFO [stderr] 
Dec 04 15:12:57.329 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.329 INFO [stderr]    --> src/main.rs:214:2
Dec 04 15:12:57.329 INFO [stderr]     |
Dec 04 15:12:57.329 INFO [stderr] 214 |     io::stdin().read_line(&mut difficulty_string);
Dec 04 15:12:57.329 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.329 INFO [stderr]     |
Dec 04 15:12:57.329 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.329 INFO [stderr] 
Dec 04 15:12:57.330 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.330 INFO [stderr]    --> src/main.rs:229:3
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr] 229 |         io::stdout().flush();
Dec 04 15:12:57.330 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.330 INFO [stderr] 
Dec 04 15:12:57.330 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.330 INFO [stderr]    --> src/main.rs:231:3
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr] 231 |         io::stdin().read_line(&mut choice);
Dec 04 15:12:57.330 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.330 INFO [stderr] 
Dec 04 15:12:57.330 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.330 INFO [stderr]    --> src/main.rs:247:5
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr] 247 |                 io::stdout().flush();
Dec 04 15:12:57.330 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.330 INFO [stderr] 
Dec 04 15:12:57.330 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.330 INFO [stderr]    --> src/main.rs:248:5
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr] 248 |                 io::stdin().read_line(&mut sender);
Dec 04 15:12:57.330 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.330 INFO [stderr] 
Dec 04 15:12:57.330 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.330 INFO [stderr]    --> src/main.rs:250:5
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr] 250 |                 io::stdout().flush();
Dec 04 15:12:57.330 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.330 INFO [stderr] 
Dec 04 15:12:57.330 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.330 INFO [stderr]    --> src/main.rs:251:5
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr] 251 |                 io::stdin().read_line(&mut recipient);
Dec 04 15:12:57.330 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.330 INFO [stderr] 
Dec 04 15:12:57.330 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.330 INFO [stderr]    --> src/main.rs:253:5
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr] 253 |                 io::stdout().flush();
Dec 04 15:12:57.330 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.330 INFO [stderr] 
Dec 04 15:12:57.330 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.330 INFO [stderr]    --> src/main.rs:254:5
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr] 254 |                 io::stdin().read_line(&mut amount);
Dec 04 15:12:57.330 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.330 INFO [stderr] 
Dec 04 15:12:57.330 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.330 INFO [stderr]    --> src/main.rs:274:5
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr] 274 |                 io::stdout().flush();
Dec 04 15:12:57.330 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.330 INFO [stderr] 
Dec 04 15:12:57.330 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.330 INFO [stderr]    --> src/main.rs:275:5
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr] 275 |                 io::stdin().read_line(&mut new_difficulty);
Dec 04 15:12:57.330 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.330 INFO [stderr] 
Dec 04 15:12:57.330 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.330 INFO [stderr]    --> src/main.rs:286:5
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr] 286 |                 io::stdout().flush();
Dec 04 15:12:57.330 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.330 INFO [stderr]     |
Dec 04 15:12:57.330 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.330 INFO [stderr] 
Dec 04 15:12:57.330 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.331 INFO [stderr]    --> src/main.rs:287:5
Dec 04 15:12:57.331 INFO [stderr]     |
Dec 04 15:12:57.331 INFO [stderr] 287 |                 io::stdin().read_line(&mut new_reward);
Dec 04 15:12:57.331 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.331 INFO [stderr]     |
Dec 04 15:12:57.331 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.331 INFO [stderr] 
Dec 04 15:12:57.575 INFO [stderr] warning: variable does not need to be mutable
Dec 04 15:12:57.575 INFO [stderr]   --> src/main.rs:94:8
Dec 04 15:12:57.575 INFO [stderr]    |
Dec 04 15:12:57.575 INFO [stderr] 94 |             let mut block_header = BlockHeader{
Dec 04 15:12:57.575 INFO [stderr]    |                 ----^^^^^^^^^^^^
Dec 04 15:12:57.575 INFO [stderr]    |                 |
Dec 04 15:12:57.575 INFO [stderr]    |                 help: remove this `mut`
Dec 04 15:12:57.575 INFO [stderr]    |
Dec 04 15:12:57.575 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 15:12:57.575 INFO [stderr] 
Dec 04 15:12:57.607 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.607 INFO [stderr]    --> src/main.rs:210:2
Dec 04 15:12:57.607 INFO [stderr]     |
Dec 04 15:12:57.607 INFO [stderr] 210 |     io::stdout().flush();
Dec 04 15:12:57.607 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.607 INFO [stderr]     |
Dec 04 15:12:57.607 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 15:12:57.608 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.608 INFO [stderr] 
Dec 04 15:12:57.608 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.608 INFO [stderr]    --> src/main.rs:211:2
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr] 211 |     io::stdin().read_line(&mut miner_address);
Dec 04 15:12:57.608 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.608 INFO [stderr] 
Dec 04 15:12:57.608 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.608 INFO [stderr]    --> src/main.rs:213:2
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr] 213 |     io::stdout().flush();
Dec 04 15:12:57.608 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.608 INFO [stderr] 
Dec 04 15:12:57.608 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.608 INFO [stderr]    --> src/main.rs:214:2
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr] 214 |     io::stdin().read_line(&mut difficulty_string);
Dec 04 15:12:57.608 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.608 INFO [stderr] 
Dec 04 15:12:57.608 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.608 INFO [stderr]    --> src/main.rs:229:3
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr] 229 |         io::stdout().flush();
Dec 04 15:12:57.608 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.608 INFO [stderr] 
Dec 04 15:12:57.608 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.608 INFO [stderr]    --> src/main.rs:231:3
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr] 231 |         io::stdin().read_line(&mut choice);
Dec 04 15:12:57.608 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.608 INFO [stderr] 
Dec 04 15:12:57.608 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.608 INFO [stderr]    --> src/main.rs:247:5
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr] 247 |                 io::stdout().flush();
Dec 04 15:12:57.608 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.608 INFO [stderr] 
Dec 04 15:12:57.608 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.608 INFO [stderr]    --> src/main.rs:248:5
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr] 248 |                 io::stdin().read_line(&mut sender);
Dec 04 15:12:57.608 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.608 INFO [stderr] 
Dec 04 15:12:57.608 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.608 INFO [stderr]    --> src/main.rs:250:5
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr] 250 |                 io::stdout().flush();
Dec 04 15:12:57.608 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.608 INFO [stderr] 
Dec 04 15:12:57.608 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.608 INFO [stderr]    --> src/main.rs:251:5
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr] 251 |                 io::stdin().read_line(&mut recipient);
Dec 04 15:12:57.608 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.608 INFO [stderr] 
Dec 04 15:12:57.608 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.608 INFO [stderr]    --> src/main.rs:253:5
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr] 253 |                 io::stdout().flush();
Dec 04 15:12:57.608 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.608 INFO [stderr] 
Dec 04 15:12:57.608 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.608 INFO [stderr]    --> src/main.rs:254:5
Dec 04 15:12:57.608 INFO [stderr]     |
Dec 04 15:12:57.608 INFO [stderr] 254 |                 io::stdin().read_line(&mut amount);
Dec 04 15:12:57.608 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.609 INFO [stderr]     |
Dec 04 15:12:57.609 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.609 INFO [stderr] 
Dec 04 15:12:57.609 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.609 INFO [stderr]    --> src/main.rs:274:5
Dec 04 15:12:57.609 INFO [stderr]     |
Dec 04 15:12:57.609 INFO [stderr] 274 |                 io::stdout().flush();
Dec 04 15:12:57.609 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.609 INFO [stderr]     |
Dec 04 15:12:57.609 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.609 INFO [stderr] 
Dec 04 15:12:57.609 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.609 INFO [stderr]    --> src/main.rs:275:5
Dec 04 15:12:57.609 INFO [stderr]     |
Dec 04 15:12:57.609 INFO [stderr] 275 |                 io::stdin().read_line(&mut new_difficulty);
Dec 04 15:12:57.609 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.609 INFO [stderr]     |
Dec 04 15:12:57.609 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.609 INFO [stderr] 
Dec 04 15:12:57.609 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.609 INFO [stderr]    --> src/main.rs:286:5
Dec 04 15:12:57.609 INFO [stderr]     |
Dec 04 15:12:57.609 INFO [stderr] 286 |                 io::stdout().flush();
Dec 04 15:12:57.609 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.609 INFO [stderr]     |
Dec 04 15:12:57.609 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.609 INFO [stderr] 
Dec 04 15:12:57.609 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 15:12:57.609 INFO [stderr]    --> src/main.rs:287:5
Dec 04 15:12:57.609 INFO [stderr]     |
Dec 04 15:12:57.609 INFO [stderr] 287 |                 io::stdin().read_line(&mut new_reward);
Dec 04 15:12:57.609 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:12:57.609 INFO [stderr]     |
Dec 04 15:12:57.609 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 15:12:57.609 INFO [stderr] 
Dec 04 15:12:57.663 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.82s
Dec 04 15:12:57.668 INFO [stderr] su: No module specific data is present
Dec 04 15:12:58.315 INFO running `"docker" "inspect" "304ac7660e074f12e1242755122fbea5cb83aaa8a35b5987614f06fcb179b35e"`
Dec 04 15:12:58.695 INFO running `"docker" "rm" "-f" "304ac7660e074f12e1242755122fbea5cb83aaa8a35b5987614f06fcb179b35e"`
Dec 04 15:12:59.116 INFO [stdout] 304ac7660e074f12e1242755122fbea5cb83aaa8a35b5987614f06fcb179b35e