Dec 18 03:51:11.861 INFO checking arjanvaneersel/rust-blockchain against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 03:51:11.861 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/arjanvaneersel/rust-blockchain:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 03:51:12.362 INFO [stdout] 44d4d31f4772f150d3c1f8de17a457db4ccaa4ecce4cea5c1d0a1fb8213510f1
Dec 18 03:51:12.364 INFO running `"docker" "start" "-a" "44d4d31f4772f150d3c1f8de17a457db4ccaa4ecce4cea5c1d0a1fb8213510f1"`
Dec 18 03:51:14.337 INFO [stderr]     Checking itoa v0.4.0
Dec 18 03:51:14.816 INFO [stderr]     Checking serde_json v1.0.12
Dec 18 03:51:17.288 INFO [stderr]     Checking bfs v0.1.0 (/opt/crater/workdir)
Dec 18 03:51:18.246 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.246 INFO [stderr]   --> src/main.rs:17:5
Dec 18 03:51:18.246 INFO [stderr]    |
Dec 18 03:51:18.246 INFO [stderr] 17 |     io::stdout().flush();
Dec 18 03:51:18.246 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.246 INFO [stderr]    |
Dec 18 03:51:18.246 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 03:51:18.246 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.246 INFO [stderr] 
Dec 18 03:51:18.246 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.246 INFO [stderr]   --> src/main.rs:18:5
Dec 18 03:51:18.246 INFO [stderr]    |
Dec 18 03:51:18.246 INFO [stderr] 18 |     io::stdin().read_line(&mut miner_addr);
Dec 18 03:51:18.246 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.246 INFO [stderr]    |
Dec 18 03:51:18.247 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.247 INFO [stderr] 
Dec 18 03:51:18.247 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.247 INFO [stderr]   --> src/main.rs:21:5
Dec 18 03:51:18.247 INFO [stderr]    |
Dec 18 03:51:18.247 INFO [stderr] 21 |     io::stdout().flush();
Dec 18 03:51:18.247 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.247 INFO [stderr]    |
Dec 18 03:51:18.247 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.247 INFO [stderr] 
Dec 18 03:51:18.247 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.247 INFO [stderr]   --> src/main.rs:22:5
Dec 18 03:51:18.247 INFO [stderr]    |
Dec 18 03:51:18.247 INFO [stderr] 22 |     io::stdin().read_line(&mut difficulty);
Dec 18 03:51:18.247 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.247 INFO [stderr]    |
Dec 18 03:51:18.247 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.247 INFO [stderr] 
Dec 18 03:51:18.247 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.247 INFO [stderr]   --> src/main.rs:36:9
Dec 18 03:51:18.247 INFO [stderr]    |
Dec 18 03:51:18.247 INFO [stderr] 36 |         io::stdout().flush();
Dec 18 03:51:18.247 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.247 INFO [stderr]    |
Dec 18 03:51:18.247 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.247 INFO [stderr] 
Dec 18 03:51:18.247 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.247 INFO [stderr]   --> src/main.rs:38:9
Dec 18 03:51:18.247 INFO [stderr]    |
Dec 18 03:51:18.247 INFO [stderr] 38 |         io::stdin().read_line(&mut choice);
Dec 18 03:51:18.247 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.247 INFO [stderr]    |
Dec 18 03:51:18.247 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.247 INFO [stderr] 
Dec 18 03:51:18.247 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.247 INFO [stderr]   --> src/main.rs:52:17
Dec 18 03:51:18.247 INFO [stderr]    |
Dec 18 03:51:18.247 INFO [stderr] 52 |                 io::stdout().flush();
Dec 18 03:51:18.247 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.247 INFO [stderr]    |
Dec 18 03:51:18.247 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.247 INFO [stderr] 
Dec 18 03:51:18.247 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.247 INFO [stderr]   --> src/main.rs:53:17
Dec 18 03:51:18.247 INFO [stderr]    |
Dec 18 03:51:18.247 INFO [stderr] 53 |                 io::stdin().read_line(&mut sender);
Dec 18 03:51:18.247 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.247 INFO [stderr]    |
Dec 18 03:51:18.247 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.247 INFO [stderr] 
Dec 18 03:51:18.247 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.247 INFO [stderr]   --> src/main.rs:56:17
Dec 18 03:51:18.247 INFO [stderr]    |
Dec 18 03:51:18.247 INFO [stderr] 56 |                 io::stdout().flush();
Dec 18 03:51:18.247 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.248 INFO [stderr]    |
Dec 18 03:51:18.248 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.248 INFO [stderr] 
Dec 18 03:51:18.249 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.249 INFO [stderr]   --> src/main.rs:57:17
Dec 18 03:51:18.249 INFO [stderr]    |
Dec 18 03:51:18.249 INFO [stderr] 57 |                 io::stdin().read_line(&mut receiver);
Dec 18 03:51:18.249 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.249 INFO [stderr]    |
Dec 18 03:51:18.249 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.249 INFO [stderr] 
Dec 18 03:51:18.249 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.249 INFO [stderr]   --> src/main.rs:60:17
Dec 18 03:51:18.249 INFO [stderr]    |
Dec 18 03:51:18.249 INFO [stderr] 60 |                 io::stdout().flush();
Dec 18 03:51:18.249 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.249 INFO [stderr]    |
Dec 18 03:51:18.249 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.249 INFO [stderr] 
Dec 18 03:51:18.249 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.249 INFO [stderr]   --> src/main.rs:61:17
Dec 18 03:51:18.249 INFO [stderr]    |
Dec 18 03:51:18.249 INFO [stderr] 61 |                 io::stdin().read_line(&mut amount);
Dec 18 03:51:18.249 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.249 INFO [stderr]    |
Dec 18 03:51:18.249 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.249 INFO [stderr] 
Dec 18 03:51:18.249 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.249 INFO [stderr]   --> src/main.rs:80:17
Dec 18 03:51:18.249 INFO [stderr]    |
Dec 18 03:51:18.249 INFO [stderr] 80 |                 io::stdout().flush();
Dec 18 03:51:18.249 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.249 INFO [stderr]    |
Dec 18 03:51:18.249 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.249 INFO [stderr] 
Dec 18 03:51:18.250 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.250 INFO [stderr]   --> src/main.rs:81:17
Dec 18 03:51:18.250 INFO [stderr]    |
Dec 18 03:51:18.250 INFO [stderr] 81 |                 io::stdin().read_line(&mut new_diff);
Dec 18 03:51:18.250 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.250 INFO [stderr]    |
Dec 18 03:51:18.250 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.250 INFO [stderr] 
Dec 18 03:51:18.252 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.252 INFO [stderr]   --> src/main.rs:93:17
Dec 18 03:51:18.252 INFO [stderr]    |
Dec 18 03:51:18.252 INFO [stderr] 93 |                 io::stdout().flush();
Dec 18 03:51:18.252 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.252 INFO [stderr]    |
Dec 18 03:51:18.256 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.257 INFO [stderr] 
Dec 18 03:51:18.257 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.257 INFO [stderr]   --> src/main.rs:94:17
Dec 18 03:51:18.257 INFO [stderr]    |
Dec 18 03:51:18.257 INFO [stderr] 94 |                 io::stdin().read_line(&mut new_reward);
Dec 18 03:51:18.257 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.257 INFO [stderr]    |
Dec 18 03:51:18.257 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.257 INFO [stderr] 
Dec 18 03:51:18.414 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.414 INFO [stderr]   --> src/main.rs:17:5
Dec 18 03:51:18.414 INFO [stderr]    |
Dec 18 03:51:18.414 INFO [stderr] 17 |     io::stdout().flush();
Dec 18 03:51:18.414 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.414 INFO [stderr]    |
Dec 18 03:51:18.414 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 03:51:18.414 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.414 INFO [stderr] 
Dec 18 03:51:18.414 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.414 INFO [stderr]   --> src/main.rs:18:5
Dec 18 03:51:18.414 INFO [stderr]    |
Dec 18 03:51:18.414 INFO [stderr] 18 |     io::stdin().read_line(&mut miner_addr);
Dec 18 03:51:18.414 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.414 INFO [stderr]    |
Dec 18 03:51:18.414 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.414 INFO [stderr] 
Dec 18 03:51:18.414 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.414 INFO [stderr]   --> src/main.rs:21:5
Dec 18 03:51:18.414 INFO [stderr]    |
Dec 18 03:51:18.414 INFO [stderr] 21 |     io::stdout().flush();
Dec 18 03:51:18.414 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.414 INFO [stderr]    |
Dec 18 03:51:18.414 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.414 INFO [stderr] 
Dec 18 03:51:18.414 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.414 INFO [stderr]   --> src/main.rs:22:5
Dec 18 03:51:18.414 INFO [stderr]    |
Dec 18 03:51:18.414 INFO [stderr] 22 |     io::stdin().read_line(&mut difficulty);
Dec 18 03:51:18.414 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.414 INFO [stderr]    |
Dec 18 03:51:18.414 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.414 INFO [stderr] 
Dec 18 03:51:18.414 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.414 INFO [stderr]   --> src/main.rs:36:9
Dec 18 03:51:18.414 INFO [stderr]    |
Dec 18 03:51:18.414 INFO [stderr] 36 |         io::stdout().flush();
Dec 18 03:51:18.414 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.414 INFO [stderr]    |
Dec 18 03:51:18.414 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.414 INFO [stderr] 
Dec 18 03:51:18.414 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.414 INFO [stderr]   --> src/main.rs:38:9
Dec 18 03:51:18.414 INFO [stderr]    |
Dec 18 03:51:18.414 INFO [stderr] 38 |         io::stdin().read_line(&mut choice);
Dec 18 03:51:18.414 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.414 INFO [stderr]    |
Dec 18 03:51:18.414 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.414 INFO [stderr] 
Dec 18 03:51:18.414 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.414 INFO [stderr]   --> src/main.rs:52:17
Dec 18 03:51:18.414 INFO [stderr]    |
Dec 18 03:51:18.414 INFO [stderr] 52 |                 io::stdout().flush();
Dec 18 03:51:18.414 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.414 INFO [stderr]    |
Dec 18 03:51:18.414 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.414 INFO [stderr] 
Dec 18 03:51:18.414 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.414 INFO [stderr]   --> src/main.rs:53:17
Dec 18 03:51:18.414 INFO [stderr]    |
Dec 18 03:51:18.414 INFO [stderr] 53 |                 io::stdin().read_line(&mut sender);
Dec 18 03:51:18.414 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.414 INFO [stderr]    |
Dec 18 03:51:18.414 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.414 INFO [stderr] 
Dec 18 03:51:18.414 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.414 INFO [stderr]   --> src/main.rs:56:17
Dec 18 03:51:18.414 INFO [stderr]    |
Dec 18 03:51:18.415 INFO [stderr] 56 |                 io::stdout().flush();
Dec 18 03:51:18.415 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.415 INFO [stderr]    |
Dec 18 03:51:18.415 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.415 INFO [stderr] 
Dec 18 03:51:18.415 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.415 INFO [stderr]   --> src/main.rs:57:17
Dec 18 03:51:18.415 INFO [stderr]    |
Dec 18 03:51:18.415 INFO [stderr] 57 |                 io::stdin().read_line(&mut receiver);
Dec 18 03:51:18.415 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.415 INFO [stderr]    |
Dec 18 03:51:18.415 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.415 INFO [stderr] 
Dec 18 03:51:18.415 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.415 INFO [stderr]   --> src/main.rs:60:17
Dec 18 03:51:18.415 INFO [stderr]    |
Dec 18 03:51:18.415 INFO [stderr] 60 |                 io::stdout().flush();
Dec 18 03:51:18.415 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.415 INFO [stderr]    |
Dec 18 03:51:18.415 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.415 INFO [stderr] 
Dec 18 03:51:18.415 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.415 INFO [stderr]   --> src/main.rs:61:17
Dec 18 03:51:18.415 INFO [stderr]    |
Dec 18 03:51:18.415 INFO [stderr] 61 |                 io::stdin().read_line(&mut amount);
Dec 18 03:51:18.415 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.415 INFO [stderr]    |
Dec 18 03:51:18.424 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.424 INFO [stderr] 
Dec 18 03:51:18.424 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.424 INFO [stderr]   --> src/main.rs:80:17
Dec 18 03:51:18.424 INFO [stderr]    |
Dec 18 03:51:18.424 INFO [stderr] 80 |                 io::stdout().flush();
Dec 18 03:51:18.424 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.424 INFO [stderr]    |
Dec 18 03:51:18.424 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.424 INFO [stderr] 
Dec 18 03:51:18.424 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.424 INFO [stderr]   --> src/main.rs:81:17
Dec 18 03:51:18.424 INFO [stderr]    |
Dec 18 03:51:18.424 INFO [stderr] 81 |                 io::stdin().read_line(&mut new_diff);
Dec 18 03:51:18.424 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.424 INFO [stderr]    |
Dec 18 03:51:18.424 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.424 INFO [stderr] 
Dec 18 03:51:18.424 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.424 INFO [stderr]   --> src/main.rs:93:17
Dec 18 03:51:18.424 INFO [stderr]    |
Dec 18 03:51:18.424 INFO [stderr] 93 |                 io::stdout().flush();
Dec 18 03:51:18.425 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.425 INFO [stderr]    |
Dec 18 03:51:18.425 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.425 INFO [stderr] 
Dec 18 03:51:18.425 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:51:18.425 INFO [stderr]   --> src/main.rs:94:17
Dec 18 03:51:18.425 INFO [stderr]    |
Dec 18 03:51:18.425 INFO [stderr] 94 |                 io::stdin().read_line(&mut new_reward);
Dec 18 03:51:18.425 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:51:18.425 INFO [stderr]    |
Dec 18 03:51:18.425 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:51:18.425 INFO [stderr] 
Dec 18 03:51:18.492 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.26s
Dec 18 03:51:19.832 INFO running `"docker" "inspect" "44d4d31f4772f150d3c1f8de17a457db4ccaa4ecce4cea5c1d0a1fb8213510f1"`
Dec 18 03:51:20.120 INFO running `"docker" "rm" "-f" "44d4d31f4772f150d3c1f8de17a457db4ccaa4ecce4cea5c1d0a1fb8213510f1"`
Dec 18 03:51:20.463 INFO [stdout] 44d4d31f4772f150d3c1f8de17a457db4ccaa4ecce4cea5c1d0a1fb8213510f1