Dec 19 18:05:03.061 INFO checking dennisfurrer/RustBlockchain against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 18:05:03.061 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/dennisfurrer/RustBlockchain:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 18:05:03.534 INFO [stdout] a228a98cc01894c0ff39e40586fca05b8979af3b0a98702c9b1028d455d0a169
Dec 19 18:05:03.536 INFO running `"docker" "start" "-a" "a228a98cc01894c0ff39e40586fca05b8979af3b0a98702c9b1028d455d0a169"`
Dec 19 18:05:05.886 INFO [stderr]     Checking serde v1.0.64
Dec 19 18:05:05.893 INFO [stderr]    Compiling syn v0.14.1
Dec 19 18:05:05.900 INFO [stderr]     Checking sha2 v0.7.1
Dec 19 18:05:13.213 INFO [stderr]    Compiling serde_derive v1.0.64
Dec 19 18:05:18.155 INFO [stderr]     Checking serde_json v1.0.19
Dec 19 18:05:23.616 INFO [stderr]     Checking blockchain v0.1.0 (/opt/crater/workdir)
Dec 19 18:05:24.259 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.260 INFO [stderr]   --> src/main.rs:18:5
Dec 19 18:05:24.260 INFO [stderr]    |
Dec 19 18:05:24.260 INFO [stderr] 18 |     io::stdout().flush();
Dec 19 18:05:24.261 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.261 INFO [stderr]    |
Dec 19 18:05:24.261 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 18:05:24.261 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.261 INFO [stderr] 
Dec 19 18:05:24.262 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.262 INFO [stderr]   --> src/main.rs:19:5
Dec 19 18:05:24.262 INFO [stderr]    |
Dec 19 18:05:24.263 INFO [stderr] 19 |     io::stdin().read_line(&mut miner_address);
Dec 19 18:05:24.263 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.263 INFO [stderr]    |
Dec 19 18:05:24.263 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.264 INFO [stderr] 
Dec 19 18:05:24.264 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.264 INFO [stderr]   --> src/main.rs:21:5
Dec 19 18:05:24.264 INFO [stderr]    |
Dec 19 18:05:24.265 INFO [stderr] 21 |     io::stdout().flush();
Dec 19 18:05:24.265 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.265 INFO [stderr]    |
Dec 19 18:05:24.265 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.265 INFO [stderr] 
Dec 19 18:05:24.265 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.265 INFO [stderr]   --> src/main.rs:22:5
Dec 19 18:05:24.265 INFO [stderr]    |
Dec 19 18:05:24.265 INFO [stderr] 22 |     io::stdin().read_line(&mut difficulty);
Dec 19 18:05:24.265 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.265 INFO [stderr]    |
Dec 19 18:05:24.265 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.265 INFO [stderr] 
Dec 19 18:05:24.265 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.265 INFO [stderr]   --> src/main.rs:38:9
Dec 19 18:05:24.266 INFO [stderr]    |
Dec 19 18:05:24.266 INFO [stderr] 38 |         io::stdout().flush();
Dec 19 18:05:24.266 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.266 INFO [stderr]    |
Dec 19 18:05:24.266 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.266 INFO [stderr] 
Dec 19 18:05:24.266 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.266 INFO [stderr]   --> src/main.rs:40:9
Dec 19 18:05:24.266 INFO [stderr]    |
Dec 19 18:05:24.266 INFO [stderr] 40 |         io::stdin().read_line(&mut choice);
Dec 19 18:05:24.266 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.266 INFO [stderr]    |
Dec 19 18:05:24.266 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.266 INFO [stderr] 
Dec 19 18:05:24.266 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.266 INFO [stderr]   --> src/main.rs:71:17
Dec 19 18:05:24.266 INFO [stderr]    |
Dec 19 18:05:24.266 INFO [stderr] 71 |                 io::stdout().flush();
Dec 19 18:05:24.266 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.266 INFO [stderr]    |
Dec 19 18:05:24.266 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.266 INFO [stderr] 
Dec 19 18:05:24.266 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.266 INFO [stderr]   --> src/main.rs:72:17
Dec 19 18:05:24.266 INFO [stderr]    |
Dec 19 18:05:24.266 INFO [stderr] 72 |                 io::stdin().read_line(&mut from);
Dec 19 18:05:24.266 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.266 INFO [stderr]    |
Dec 19 18:05:24.266 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.266 INFO [stderr] 
Dec 19 18:05:24.266 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.266 INFO [stderr]   --> src/main.rs:74:17
Dec 19 18:05:24.266 INFO [stderr]    |
Dec 19 18:05:24.266 INFO [stderr] 74 |                 io::stdout().flush();
Dec 19 18:05:24.266 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.266 INFO [stderr]    |
Dec 19 18:05:24.266 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.266 INFO [stderr] 
Dec 19 18:05:24.267 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.267 INFO [stderr]   --> src/main.rs:75:17
Dec 19 18:05:24.267 INFO [stderr]    |
Dec 19 18:05:24.267 INFO [stderr] 75 |                 io::stdin().read_line(&mut to);
Dec 19 18:05:24.267 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.267 INFO [stderr]    |
Dec 19 18:05:24.267 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.267 INFO [stderr] 
Dec 19 18:05:24.267 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.267 INFO [stderr]   --> src/main.rs:77:17
Dec 19 18:05:24.267 INFO [stderr]    |
Dec 19 18:05:24.267 INFO [stderr] 77 |                 io::stdout().flush();
Dec 19 18:05:24.267 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.267 INFO [stderr]    |
Dec 19 18:05:24.267 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.267 INFO [stderr] 
Dec 19 18:05:24.267 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.267 INFO [stderr]   --> src/main.rs:78:17
Dec 19 18:05:24.267 INFO [stderr]    |
Dec 19 18:05:24.267 INFO [stderr] 78 |                 io::stdin().read_line(&mut amount);
Dec 19 18:05:24.267 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.267 INFO [stderr]    |
Dec 19 18:05:24.267 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.267 INFO [stderr] 
Dec 19 18:05:24.267 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.267 INFO [stderr]    --> src/main.rs:106:17
Dec 19 18:05:24.267 INFO [stderr]     |
Dec 19 18:05:24.267 INFO [stderr] 106 |                 io::stdout().flush();
Dec 19 18:05:24.267 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.267 INFO [stderr]     |
Dec 19 18:05:24.267 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.267 INFO [stderr] 
Dec 19 18:05:24.267 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.267 INFO [stderr]    --> src/main.rs:107:17
Dec 19 18:05:24.267 INFO [stderr]     |
Dec 19 18:05:24.267 INFO [stderr] 107 |                 io::stdin().read_line(&mut new_diff);
Dec 19 18:05:24.267 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.267 INFO [stderr]     |
Dec 19 18:05:24.267 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.267 INFO [stderr] 
Dec 19 18:05:24.267 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.267 INFO [stderr]    --> src/main.rs:119:17
Dec 19 18:05:24.268 INFO [stderr]     |
Dec 19 18:05:24.268 INFO [stderr] 119 |                 io::stdout().flush();
Dec 19 18:05:24.268 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.268 INFO [stderr]     |
Dec 19 18:05:24.268 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.268 INFO [stderr] 
Dec 19 18:05:24.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.268 INFO [stderr]    --> src/main.rs:120:17
Dec 19 18:05:24.268 INFO [stderr]     |
Dec 19 18:05:24.268 INFO [stderr] 120 |                 io::stdin().read_line(&mut new_reward);
Dec 19 18:05:24.268 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.268 INFO [stderr]     |
Dec 19 18:05:24.268 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.268 INFO [stderr] 
Dec 19 18:05:24.327 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.327 INFO [stderr]   --> src/main.rs:18:5
Dec 19 18:05:24.327 INFO [stderr]    |
Dec 19 18:05:24.327 INFO [stderr] 18 |     io::stdout().flush();
Dec 19 18:05:24.327 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.328 INFO [stderr]    |
Dec 19 18:05:24.328 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 18:05:24.328 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.328 INFO [stderr] 
Dec 19 18:05:24.329 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.329 INFO [stderr]   --> src/main.rs:19:5
Dec 19 18:05:24.329 INFO [stderr]    |
Dec 19 18:05:24.329 INFO [stderr] 19 |     io::stdin().read_line(&mut miner_address);
Dec 19 18:05:24.329 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.329 INFO [stderr]    |
Dec 19 18:05:24.329 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.330 INFO [stderr] 
Dec 19 18:05:24.330 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.330 INFO [stderr]   --> src/main.rs:21:5
Dec 19 18:05:24.330 INFO [stderr]    |
Dec 19 18:05:24.330 INFO [stderr] 21 |     io::stdout().flush();
Dec 19 18:05:24.330 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.330 INFO [stderr]    |
Dec 19 18:05:24.331 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.331 INFO [stderr] 
Dec 19 18:05:24.331 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.331 INFO [stderr]   --> src/main.rs:22:5
Dec 19 18:05:24.331 INFO [stderr]    |
Dec 19 18:05:24.331 INFO [stderr] 22 |     io::stdin().read_line(&mut difficulty);
Dec 19 18:05:24.331 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.331 INFO [stderr]    |
Dec 19 18:05:24.331 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.331 INFO [stderr] 
Dec 19 18:05:24.336 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.337 INFO [stderr]   --> src/main.rs:38:9
Dec 19 18:05:24.337 INFO [stderr]    |
Dec 19 18:05:24.337 INFO [stderr] 38 |         io::stdout().flush();
Dec 19 18:05:24.337 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.337 INFO [stderr]    |
Dec 19 18:05:24.337 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.337 INFO [stderr] 
Dec 19 18:05:24.337 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.337 INFO [stderr]   --> src/main.rs:40:9
Dec 19 18:05:24.337 INFO [stderr]    |
Dec 19 18:05:24.337 INFO [stderr] 40 |         io::stdin().read_line(&mut choice);
Dec 19 18:05:24.337 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.337 INFO [stderr]    |
Dec 19 18:05:24.337 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.337 INFO [stderr] 
Dec 19 18:05:24.337 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.337 INFO [stderr]   --> src/main.rs:71:17
Dec 19 18:05:24.337 INFO [stderr]    |
Dec 19 18:05:24.337 INFO [stderr] 71 |                 io::stdout().flush();
Dec 19 18:05:24.337 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.338 INFO [stderr]    |
Dec 19 18:05:24.338 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.338 INFO [stderr] 
Dec 19 18:05:24.338 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.338 INFO [stderr]   --> src/main.rs:72:17
Dec 19 18:05:24.338 INFO [stderr]    |
Dec 19 18:05:24.338 INFO [stderr] 72 |                 io::stdin().read_line(&mut from);
Dec 19 18:05:24.338 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.338 INFO [stderr]    |
Dec 19 18:05:24.338 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.338 INFO [stderr] 
Dec 19 18:05:24.338 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.338 INFO [stderr]   --> src/main.rs:74:17
Dec 19 18:05:24.338 INFO [stderr]    |
Dec 19 18:05:24.338 INFO [stderr] 74 |                 io::stdout().flush();
Dec 19 18:05:24.338 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.338 INFO [stderr]    |
Dec 19 18:05:24.339 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.339 INFO [stderr] 
Dec 19 18:05:24.339 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.339 INFO [stderr]   --> src/main.rs:75:17
Dec 19 18:05:24.339 INFO [stderr]    |
Dec 19 18:05:24.339 INFO [stderr] 75 |                 io::stdin().read_line(&mut to);
Dec 19 18:05:24.339 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.339 INFO [stderr]    |
Dec 19 18:05:24.339 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.339 INFO [stderr] 
Dec 19 18:05:24.339 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.339 INFO [stderr]   --> src/main.rs:77:17
Dec 19 18:05:24.339 INFO [stderr]    |
Dec 19 18:05:24.339 INFO [stderr] 77 |                 io::stdout().flush();
Dec 19 18:05:24.339 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.339 INFO [stderr]    |
Dec 19 18:05:24.340 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.340 INFO [stderr] 
Dec 19 18:05:24.340 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.340 INFO [stderr]   --> src/main.rs:78:17
Dec 19 18:05:24.340 INFO [stderr]    |
Dec 19 18:05:24.340 INFO [stderr] 78 |                 io::stdin().read_line(&mut amount);
Dec 19 18:05:24.340 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.340 INFO [stderr]    |
Dec 19 18:05:24.340 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.340 INFO [stderr] 
Dec 19 18:05:24.340 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.340 INFO [stderr]    --> src/main.rs:106:17
Dec 19 18:05:24.340 INFO [stderr]     |
Dec 19 18:05:24.341 INFO [stderr] 106 |                 io::stdout().flush();
Dec 19 18:05:24.341 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.341 INFO [stderr]     |
Dec 19 18:05:24.341 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.341 INFO [stderr] 
Dec 19 18:05:24.341 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.341 INFO [stderr]    --> src/main.rs:107:17
Dec 19 18:05:24.341 INFO [stderr]     |
Dec 19 18:05:24.341 INFO [stderr] 107 |                 io::stdin().read_line(&mut new_diff);
Dec 19 18:05:24.341 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.341 INFO [stderr]     |
Dec 19 18:05:24.341 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.341 INFO [stderr] 
Dec 19 18:05:24.341 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.341 INFO [stderr]    --> src/main.rs:119:17
Dec 19 18:05:24.341 INFO [stderr]     |
Dec 19 18:05:24.341 INFO [stderr] 119 |                 io::stdout().flush();
Dec 19 18:05:24.342 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.342 INFO [stderr]     |
Dec 19 18:05:24.342 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.342 INFO [stderr] 
Dec 19 18:05:24.342 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:05:24.342 INFO [stderr]    --> src/main.rs:120:17
Dec 19 18:05:24.342 INFO [stderr]     |
Dec 19 18:05:24.342 INFO [stderr] 120 |                 io::stdin().read_line(&mut new_reward);
Dec 19 18:05:24.342 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:05:24.342 INFO [stderr]     |
Dec 19 18:05:24.342 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:05:24.342 INFO [stderr] 
Dec 19 18:05:24.394 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.61s
Dec 19 18:05:25.285 INFO running `"docker" "inspect" "a228a98cc01894c0ff39e40586fca05b8979af3b0a98702c9b1028d455d0a169"`
Dec 19 18:05:25.586 INFO running `"docker" "rm" "-f" "a228a98cc01894c0ff39e40586fca05b8979af3b0a98702c9b1028d455d0a169"`
Dec 19 18:05:25.878 INFO [stdout] a228a98cc01894c0ff39e40586fca05b8979af3b0a98702c9b1028d455d0a169