Dec 14 02:30:46.786 INFO testing arjanvaneersel/rust-blockchain against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 14 02:30:46.786 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 14 02:30:47.224 INFO [stdout] 99b7cced969598605be22a9bada99cb37f6263205a2175df1866e01285853423
Dec 14 02:30:47.226 INFO running `"docker" "start" "-a" "99b7cced969598605be22a9bada99cb37f6263205a2175df1866e01285853423"`
Dec 14 02:30:48.607 INFO [stderr] usermod: no changes
Dec 14 02:30:48.743 INFO [stderr]    Compiling bfs v0.1.0 (/source)
Dec 14 02:30:49.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:49.964 INFO [stderr]   --> src/main.rs:17:5
Dec 14 02:30:49.964 INFO [stderr]    |
Dec 14 02:30:49.964 INFO [stderr] 17 |     io::stdout().flush();
Dec 14 02:30:49.964 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:49.964 INFO [stderr]    |
Dec 14 02:30:49.964 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 02:30:49.964 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:49.964 INFO [stderr] 
Dec 14 02:30:49.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:49.964 INFO [stderr]   --> src/main.rs:18:5
Dec 14 02:30:49.964 INFO [stderr]    |
Dec 14 02:30:49.964 INFO [stderr] 18 |     io::stdin().read_line(&mut miner_addr);
Dec 14 02:30:49.964 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:49.964 INFO [stderr]    |
Dec 14 02:30:49.964 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:49.964 INFO [stderr] 
Dec 14 02:30:49.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:49.964 INFO [stderr]   --> src/main.rs:21:5
Dec 14 02:30:49.965 INFO [stderr]    |
Dec 14 02:30:49.965 INFO [stderr] 21 |     io::stdout().flush();
Dec 14 02:30:49.965 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:49.965 INFO [stderr]    |
Dec 14 02:30:49.965 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:49.965 INFO [stderr] 
Dec 14 02:30:49.965 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:49.965 INFO [stderr]   --> src/main.rs:22:5
Dec 14 02:30:49.965 INFO [stderr]    |
Dec 14 02:30:49.965 INFO [stderr] 22 |     io::stdin().read_line(&mut difficulty);
Dec 14 02:30:49.965 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:49.965 INFO [stderr]    |
Dec 14 02:30:49.965 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:49.965 INFO [stderr] 
Dec 14 02:30:49.965 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:49.965 INFO [stderr]   --> src/main.rs:36:9
Dec 14 02:30:49.965 INFO [stderr]    |
Dec 14 02:30:49.965 INFO [stderr] 36 |         io::stdout().flush();
Dec 14 02:30:49.965 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:49.965 INFO [stderr]    |
Dec 14 02:30:49.965 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:49.965 INFO [stderr] 
Dec 14 02:30:49.965 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:49.965 INFO [stderr]   --> src/main.rs:38:9
Dec 14 02:30:49.965 INFO [stderr]    |
Dec 14 02:30:49.965 INFO [stderr] 38 |         io::stdin().read_line(&mut choice);
Dec 14 02:30:49.965 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:49.965 INFO [stderr]    |
Dec 14 02:30:49.965 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:49.965 INFO [stderr] 
Dec 14 02:30:49.965 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:49.965 INFO [stderr]   --> src/main.rs:52:17
Dec 14 02:30:49.965 INFO [stderr]    |
Dec 14 02:30:49.965 INFO [stderr] 52 |                 io::stdout().flush();
Dec 14 02:30:49.965 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:49.965 INFO [stderr]    |
Dec 14 02:30:49.965 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:49.965 INFO [stderr] 
Dec 14 02:30:49.965 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:49.965 INFO [stderr]   --> src/main.rs:53:17
Dec 14 02:30:49.965 INFO [stderr]    |
Dec 14 02:30:49.965 INFO [stderr] 53 |                 io::stdin().read_line(&mut sender);
Dec 14 02:30:49.965 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:49.965 INFO [stderr]    |
Dec 14 02:30:49.965 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:49.965 INFO [stderr] 
Dec 14 02:30:49.965 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:49.965 INFO [stderr]   --> src/main.rs:56:17
Dec 14 02:30:49.965 INFO [stderr]    |
Dec 14 02:30:49.965 INFO [stderr] 56 |                 io::stdout().flush();
Dec 14 02:30:49.965 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:49.965 INFO [stderr]    |
Dec 14 02:30:49.965 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:49.965 INFO [stderr] 
Dec 14 02:30:49.965 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:49.965 INFO [stderr]   --> src/main.rs:57:17
Dec 14 02:30:49.965 INFO [stderr]    |
Dec 14 02:30:49.965 INFO [stderr] 57 |                 io::stdin().read_line(&mut receiver);
Dec 14 02:30:49.965 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:49.965 INFO [stderr]    |
Dec 14 02:30:49.965 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:49.965 INFO [stderr] 
Dec 14 02:30:49.966 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:49.966 INFO [stderr]   --> src/main.rs:60:17
Dec 14 02:30:49.966 INFO [stderr]    |
Dec 14 02:30:49.966 INFO [stderr] 60 |                 io::stdout().flush();
Dec 14 02:30:49.966 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:49.966 INFO [stderr]    |
Dec 14 02:30:49.966 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:49.966 INFO [stderr] 
Dec 14 02:30:49.966 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:49.966 INFO [stderr]   --> src/main.rs:61:17
Dec 14 02:30:49.966 INFO [stderr]    |
Dec 14 02:30:49.966 INFO [stderr] 61 |                 io::stdin().read_line(&mut amount);
Dec 14 02:30:49.966 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:49.966 INFO [stderr]    |
Dec 14 02:30:49.966 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:49.966 INFO [stderr] 
Dec 14 02:30:49.966 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:49.966 INFO [stderr]   --> src/main.rs:80:17
Dec 14 02:30:49.966 INFO [stderr]    |
Dec 14 02:30:49.966 INFO [stderr] 80 |                 io::stdout().flush();
Dec 14 02:30:49.966 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:49.966 INFO [stderr]    |
Dec 14 02:30:49.966 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:49.966 INFO [stderr] 
Dec 14 02:30:49.966 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:49.966 INFO [stderr]   --> src/main.rs:81:17
Dec 14 02:30:49.966 INFO [stderr]    |
Dec 14 02:30:49.966 INFO [stderr] 81 |                 io::stdin().read_line(&mut new_diff);
Dec 14 02:30:49.966 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:49.966 INFO [stderr]    |
Dec 14 02:30:49.966 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:49.967 INFO [stderr] 
Dec 14 02:30:49.967 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:49.967 INFO [stderr]   --> src/main.rs:93:17
Dec 14 02:30:49.967 INFO [stderr]    |
Dec 14 02:30:49.967 INFO [stderr] 93 |                 io::stdout().flush();
Dec 14 02:30:49.967 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:49.967 INFO [stderr]    |
Dec 14 02:30:49.967 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:49.967 INFO [stderr] 
Dec 14 02:30:49.967 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:49.967 INFO [stderr]   --> src/main.rs:94:17
Dec 14 02:30:49.967 INFO [stderr]    |
Dec 14 02:30:49.967 INFO [stderr] 94 |                 io::stdin().read_line(&mut new_reward);
Dec 14 02:30:49.967 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:49.967 INFO [stderr]    |
Dec 14 02:30:49.967 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:49.967 INFO [stderr] 
Dec 14 02:30:51.067 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.43s
Dec 14 02:30:51.076 INFO [stderr] su: No module specific data is present
Dec 14 02:30:52.004 INFO running `"docker" "inspect" "99b7cced969598605be22a9bada99cb37f6263205a2175df1866e01285853423"`
Dec 14 02:30:52.357 INFO running `"docker" "rm" "-f" "99b7cced969598605be22a9bada99cb37f6263205a2175df1866e01285853423"`
Dec 14 02:30:52.677 INFO [stdout] 99b7cced969598605be22a9bada99cb37f6263205a2175df1866e01285853423
Dec 14 02:30:52.678 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 14 02:30:53.102 INFO [stdout] 79d7950ead0c500324207ef200115a296d9bac4ca41bf5ea89a0b654c1a99351
Dec 14 02:30:53.102 INFO running `"docker" "start" "-a" "79d7950ead0c500324207ef200115a296d9bac4ca41bf5ea89a0b654c1a99351"`
Dec 14 02:30:54.115 INFO [stderr] usermod: no changes
Dec 14 02:30:54.203 INFO [stderr]    Compiling bfs v0.1.0 (/source)
Dec 14 02:30:55.419 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:55.419 INFO [stderr]   --> src/main.rs:17:5
Dec 14 02:30:55.419 INFO [stderr]    |
Dec 14 02:30:55.419 INFO [stderr] 17 |     io::stdout().flush();
Dec 14 02:30:55.419 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:55.419 INFO [stderr]    |
Dec 14 02:30:55.419 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 02:30:55.419 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:55.419 INFO [stderr] 
Dec 14 02:30:55.419 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:55.419 INFO [stderr]   --> src/main.rs:18:5
Dec 14 02:30:55.419 INFO [stderr]    |
Dec 14 02:30:55.419 INFO [stderr] 18 |     io::stdin().read_line(&mut miner_addr);
Dec 14 02:30:55.419 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:55.419 INFO [stderr]    |
Dec 14 02:30:55.419 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:55.419 INFO [stderr] 
Dec 14 02:30:55.419 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:55.419 INFO [stderr]   --> src/main.rs:21:5
Dec 14 02:30:55.419 INFO [stderr]    |
Dec 14 02:30:55.419 INFO [stderr] 21 |     io::stdout().flush();
Dec 14 02:30:55.419 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:55.419 INFO [stderr]    |
Dec 14 02:30:55.419 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:55.419 INFO [stderr] 
Dec 14 02:30:55.419 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:55.419 INFO [stderr]   --> src/main.rs:22:5
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr] 22 |     io::stdin().read_line(&mut difficulty);
Dec 14 02:30:55.420 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:55.420 INFO [stderr] 
Dec 14 02:30:55.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:55.420 INFO [stderr]   --> src/main.rs:36:9
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr] 36 |         io::stdout().flush();
Dec 14 02:30:55.420 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:55.420 INFO [stderr] 
Dec 14 02:30:55.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:55.420 INFO [stderr]   --> src/main.rs:38:9
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr] 38 |         io::stdin().read_line(&mut choice);
Dec 14 02:30:55.420 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:55.420 INFO [stderr] 
Dec 14 02:30:55.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:55.420 INFO [stderr]   --> src/main.rs:52:17
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr] 52 |                 io::stdout().flush();
Dec 14 02:30:55.420 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:55.420 INFO [stderr] 
Dec 14 02:30:55.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:55.420 INFO [stderr]   --> src/main.rs:53:17
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr] 53 |                 io::stdin().read_line(&mut sender);
Dec 14 02:30:55.420 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:55.420 INFO [stderr] 
Dec 14 02:30:55.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:55.420 INFO [stderr]   --> src/main.rs:56:17
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr] 56 |                 io::stdout().flush();
Dec 14 02:30:55.420 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:55.420 INFO [stderr] 
Dec 14 02:30:55.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:55.420 INFO [stderr]   --> src/main.rs:57:17
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr] 57 |                 io::stdin().read_line(&mut receiver);
Dec 14 02:30:55.420 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:55.420 INFO [stderr] 
Dec 14 02:30:55.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:55.420 INFO [stderr]   --> src/main.rs:60:17
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr] 60 |                 io::stdout().flush();
Dec 14 02:30:55.420 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:55.420 INFO [stderr] 
Dec 14 02:30:55.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:55.420 INFO [stderr]   --> src/main.rs:61:17
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr] 61 |                 io::stdin().read_line(&mut amount);
Dec 14 02:30:55.420 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:55.420 INFO [stderr] 
Dec 14 02:30:55.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:55.420 INFO [stderr]   --> src/main.rs:80:17
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr] 80 |                 io::stdout().flush();
Dec 14 02:30:55.420 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:55.420 INFO [stderr] 
Dec 14 02:30:55.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:55.420 INFO [stderr]   --> src/main.rs:81:17
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr] 81 |                 io::stdin().read_line(&mut new_diff);
Dec 14 02:30:55.420 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:55.420 INFO [stderr] 
Dec 14 02:30:55.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:55.420 INFO [stderr]   --> src/main.rs:93:17
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr] 93 |                 io::stdout().flush();
Dec 14 02:30:55.420 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:55.420 INFO [stderr] 
Dec 14 02:30:55.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 02:30:55.420 INFO [stderr]   --> src/main.rs:94:17
Dec 14 02:30:55.420 INFO [stderr]    |
Dec 14 02:30:55.420 INFO [stderr] 94 |                 io::stdin().read_line(&mut new_reward);
Dec 14 02:30:55.420 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 02:30:55.421 INFO [stderr]    |
Dec 14 02:30:55.421 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 02:30:55.421 INFO [stderr] 
Dec 14 02:30:55.753 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.61s
Dec 14 02:30:55.766 INFO [stderr] su: No module specific data is present
Dec 14 02:30:56.257 INFO running `"docker" "inspect" "79d7950ead0c500324207ef200115a296d9bac4ca41bf5ea89a0b654c1a99351"`
Dec 14 02:30:56.544 INFO running `"docker" "rm" "-f" "79d7950ead0c500324207ef200115a296d9bac4ca41bf5ea89a0b654c1a99351"`
Dec 14 02:30:56.879 INFO [stdout] 79d7950ead0c500324207ef200115a296d9bac4ca41bf5ea89a0b654c1a99351
Dec 14 02:30:56.882 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 14 02:30:57.308 INFO [stdout] 284d7d80bce7ffe3555f93519fbcdbabb0acaf9d2b44fb410bd7294bb0a1f8c4
Dec 14 02:30:57.311 INFO running `"docker" "start" "-a" "284d7d80bce7ffe3555f93519fbcdbabb0acaf9d2b44fb410bd7294bb0a1f8c4"`
Dec 14 02:30:58.618 INFO [stderr] usermod: no changes
Dec 14 02:30:58.705 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
Dec 14 02:30:58.705 INFO [stdout] 
Dec 14 02:30:58.705 INFO [stderr]      Running /target/debug/deps/bfs-3cfbb01bfc4327cb
Dec 14 02:30:58.705 INFO [stdout] running 0 tests
Dec 14 02:30:58.705 INFO [stdout] 
Dec 14 02:30:58.705 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 02:30:58.705 INFO [stdout] 
Dec 14 02:30:58.705 INFO [stderr] su: No module specific data is present
Dec 14 02:30:59.492 INFO running `"docker" "inspect" "284d7d80bce7ffe3555f93519fbcdbabb0acaf9d2b44fb410bd7294bb0a1f8c4"`
Dec 14 02:30:59.789 INFO running `"docker" "rm" "-f" "284d7d80bce7ffe3555f93519fbcdbabb0acaf9d2b44fb410bd7294bb0a1f8c4"`
Dec 14 02:31:00.091 INFO [stdout] 284d7d80bce7ffe3555f93519fbcdbabb0acaf9d2b44fb410bd7294bb0a1f8c4