Dec 06 06:34:30.902 INFO testing arjanvaneersel/rust-blockchain against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 06 06:34:30.903 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-5/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 06 06:34:31.262 INFO [stdout] f8e81b4838137fb9686c2daf40fad35ca78eb7ad908a7499ac6fbd7ff022ead6
Dec 06 06:34:31.268 INFO running `"docker" "start" "-a" "f8e81b4838137fb9686c2daf40fad35ca78eb7ad908a7499ac6fbd7ff022ead6"`
Dec 06 06:34:32.144 INFO [stderr] usermod: no changes
Dec 06 06:34:32.223 INFO [stderr]    Compiling serde_json v1.0.12
Dec 06 06:34:32.225 INFO [stderr]    Compiling serde_derive_internals v0.21.0
Dec 06 06:34:34.981 INFO [stderr]    Compiling serde_derive v1.0.33
Dec 06 06:34:41.704 INFO [stderr]    Compiling bfs v0.1.0 (/source)
Dec 06 06:34:42.760 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:42.760 INFO [stderr]   --> src/main.rs:17:5
Dec 06 06:34:42.760 INFO [stderr]    |
Dec 06 06:34:42.760 INFO [stderr] 17 |     io::stdout().flush();
Dec 06 06:34:42.760 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:42.760 INFO [stderr]    |
Dec 06 06:34:42.760 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 06 06:34:42.761 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:42.761 INFO [stderr] 
Dec 06 06:34:42.761 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:42.761 INFO [stderr]   --> src/main.rs:18:5
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr] 18 |     io::stdin().read_line(&mut miner_addr);
Dec 06 06:34:42.761 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:42.761 INFO [stderr] 
Dec 06 06:34:42.761 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:42.761 INFO [stderr]   --> src/main.rs:21:5
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr] 21 |     io::stdout().flush();
Dec 06 06:34:42.761 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:42.761 INFO [stderr] 
Dec 06 06:34:42.761 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:42.761 INFO [stderr]   --> src/main.rs:22:5
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr] 22 |     io::stdin().read_line(&mut difficulty);
Dec 06 06:34:42.761 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:42.761 INFO [stderr] 
Dec 06 06:34:42.761 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:42.761 INFO [stderr]   --> src/main.rs:36:9
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr] 36 |         io::stdout().flush();
Dec 06 06:34:42.761 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:42.761 INFO [stderr] 
Dec 06 06:34:42.761 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:42.761 INFO [stderr]   --> src/main.rs:38:9
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr] 38 |         io::stdin().read_line(&mut choice);
Dec 06 06:34:42.761 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:42.761 INFO [stderr] 
Dec 06 06:34:42.761 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:42.761 INFO [stderr]   --> src/main.rs:52:17
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr] 52 |                 io::stdout().flush();
Dec 06 06:34:42.761 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:42.761 INFO [stderr] 
Dec 06 06:34:42.761 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:42.761 INFO [stderr]   --> src/main.rs:53:17
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr] 53 |                 io::stdin().read_line(&mut sender);
Dec 06 06:34:42.761 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:42.761 INFO [stderr] 
Dec 06 06:34:42.761 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:42.761 INFO [stderr]   --> src/main.rs:56:17
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr] 56 |                 io::stdout().flush();
Dec 06 06:34:42.761 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:42.761 INFO [stderr] 
Dec 06 06:34:42.761 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:42.761 INFO [stderr]   --> src/main.rs:57:17
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr] 57 |                 io::stdin().read_line(&mut receiver);
Dec 06 06:34:42.761 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:42.761 INFO [stderr]    |
Dec 06 06:34:42.761 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:42.761 INFO [stderr] 
Dec 06 06:34:42.761 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:42.761 INFO [stderr]   --> src/main.rs:60:17
Dec 06 06:34:42.762 INFO [stderr]    |
Dec 06 06:34:42.762 INFO [stderr] 60 |                 io::stdout().flush();
Dec 06 06:34:42.762 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:42.762 INFO [stderr]    |
Dec 06 06:34:42.762 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:42.762 INFO [stderr] 
Dec 06 06:34:42.762 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:42.762 INFO [stderr]   --> src/main.rs:61:17
Dec 06 06:34:42.762 INFO [stderr]    |
Dec 06 06:34:42.762 INFO [stderr] 61 |                 io::stdin().read_line(&mut amount);
Dec 06 06:34:42.762 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:42.762 INFO [stderr]    |
Dec 06 06:34:42.762 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:42.762 INFO [stderr] 
Dec 06 06:34:42.762 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:42.762 INFO [stderr]   --> src/main.rs:80:17
Dec 06 06:34:42.762 INFO [stderr]    |
Dec 06 06:34:42.762 INFO [stderr] 80 |                 io::stdout().flush();
Dec 06 06:34:42.762 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:42.762 INFO [stderr]    |
Dec 06 06:34:42.762 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:42.762 INFO [stderr] 
Dec 06 06:34:42.762 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:42.762 INFO [stderr]   --> src/main.rs:81:17
Dec 06 06:34:42.762 INFO [stderr]    |
Dec 06 06:34:42.762 INFO [stderr] 81 |                 io::stdin().read_line(&mut new_diff);
Dec 06 06:34:42.762 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:42.762 INFO [stderr]    |
Dec 06 06:34:42.762 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:42.762 INFO [stderr] 
Dec 06 06:34:42.762 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:42.762 INFO [stderr]   --> src/main.rs:93:17
Dec 06 06:34:42.762 INFO [stderr]    |
Dec 06 06:34:42.762 INFO [stderr] 93 |                 io::stdout().flush();
Dec 06 06:34:42.762 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:42.762 INFO [stderr]    |
Dec 06 06:34:42.762 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:42.762 INFO [stderr] 
Dec 06 06:34:42.762 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:42.762 INFO [stderr]   --> src/main.rs:94:17
Dec 06 06:34:42.762 INFO [stderr]    |
Dec 06 06:34:42.762 INFO [stderr] 94 |                 io::stdin().read_line(&mut new_reward);
Dec 06 06:34:42.762 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:42.762 INFO [stderr]    |
Dec 06 06:34:42.762 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:42.762 INFO [stderr] 
Dec 06 06:34:43.774 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.61s
Dec 06 06:34:43.780 INFO [stderr] su: No module specific data is present
Dec 06 06:34:44.656 INFO running `"docker" "inspect" "f8e81b4838137fb9686c2daf40fad35ca78eb7ad908a7499ac6fbd7ff022ead6"`
Dec 06 06:34:44.954 INFO running `"docker" "rm" "-f" "f8e81b4838137fb9686c2daf40fad35ca78eb7ad908a7499ac6fbd7ff022ead6"`
Dec 06 06:34:45.276 INFO [stdout] f8e81b4838137fb9686c2daf40fad35ca78eb7ad908a7499ac6fbd7ff022ead6
Dec 06 06:34:45.283 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-5/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 06 06:34:45.833 INFO [stdout] c39da988b2fc919e5c9b6a65fbec98812871e11d1bef8b5fdf7eca00119b0eb7
Dec 06 06:34:45.835 INFO running `"docker" "start" "-a" "c39da988b2fc919e5c9b6a65fbec98812871e11d1bef8b5fdf7eca00119b0eb7"`
Dec 06 06:34:47.224 INFO [stderr] usermod: no changes
Dec 06 06:34:47.298 INFO [stderr]    Compiling bfs v0.1.0 (/source)
Dec 06 06:34:48.432 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:48.432 INFO [stderr]   --> src/main.rs:17:5
Dec 06 06:34:48.432 INFO [stderr]    |
Dec 06 06:34:48.432 INFO [stderr] 17 |     io::stdout().flush();
Dec 06 06:34:48.432 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:48.432 INFO [stderr]    |
Dec 06 06:34:48.432 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 06 06:34:48.432 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:48.432 INFO [stderr] 
Dec 06 06:34:48.432 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:48.432 INFO [stderr]   --> src/main.rs:18:5
Dec 06 06:34:48.432 INFO [stderr]    |
Dec 06 06:34:48.432 INFO [stderr] 18 |     io::stdin().read_line(&mut miner_addr);
Dec 06 06:34:48.432 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:48.432 INFO [stderr]    |
Dec 06 06:34:48.432 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:48.432 INFO [stderr] 
Dec 06 06:34:48.432 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:48.432 INFO [stderr]   --> src/main.rs:21:5
Dec 06 06:34:48.432 INFO [stderr]    |
Dec 06 06:34:48.432 INFO [stderr] 21 |     io::stdout().flush();
Dec 06 06:34:48.432 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:48.433 INFO [stderr]    |
Dec 06 06:34:48.433 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:48.433 INFO [stderr] 
Dec 06 06:34:48.433 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:48.433 INFO [stderr]   --> src/main.rs:22:5
Dec 06 06:34:48.433 INFO [stderr]    |
Dec 06 06:34:48.433 INFO [stderr] 22 |     io::stdin().read_line(&mut difficulty);
Dec 06 06:34:48.433 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:48.433 INFO [stderr]    |
Dec 06 06:34:48.433 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:48.433 INFO [stderr] 
Dec 06 06:34:48.433 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:48.433 INFO [stderr]   --> src/main.rs:36:9
Dec 06 06:34:48.433 INFO [stderr]    |
Dec 06 06:34:48.433 INFO [stderr] 36 |         io::stdout().flush();
Dec 06 06:34:48.433 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:48.433 INFO [stderr]    |
Dec 06 06:34:48.433 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:48.433 INFO [stderr] 
Dec 06 06:34:48.433 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:48.433 INFO [stderr]   --> src/main.rs:38:9
Dec 06 06:34:48.433 INFO [stderr]    |
Dec 06 06:34:48.433 INFO [stderr] 38 |         io::stdin().read_line(&mut choice);
Dec 06 06:34:48.433 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:48.433 INFO [stderr]    |
Dec 06 06:34:48.433 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:48.433 INFO [stderr] 
Dec 06 06:34:48.433 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:48.433 INFO [stderr]   --> src/main.rs:52:17
Dec 06 06:34:48.433 INFO [stderr]    |
Dec 06 06:34:48.433 INFO [stderr] 52 |                 io::stdout().flush();
Dec 06 06:34:48.433 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:48.433 INFO [stderr]    |
Dec 06 06:34:48.433 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:48.433 INFO [stderr] 
Dec 06 06:34:48.433 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:48.433 INFO [stderr]   --> src/main.rs:53:17
Dec 06 06:34:48.433 INFO [stderr]    |
Dec 06 06:34:48.433 INFO [stderr] 53 |                 io::stdin().read_line(&mut sender);
Dec 06 06:34:48.433 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:48.433 INFO [stderr]    |
Dec 06 06:34:48.433 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:48.433 INFO [stderr] 
Dec 06 06:34:48.433 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:48.433 INFO [stderr]   --> src/main.rs:56:17
Dec 06 06:34:48.433 INFO [stderr]    |
Dec 06 06:34:48.433 INFO [stderr] 56 |                 io::stdout().flush();
Dec 06 06:34:48.433 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:48.433 INFO [stderr]    |
Dec 06 06:34:48.433 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:48.433 INFO [stderr] 
Dec 06 06:34:48.433 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:48.433 INFO [stderr]   --> src/main.rs:57:17
Dec 06 06:34:48.433 INFO [stderr]    |
Dec 06 06:34:48.433 INFO [stderr] 57 |                 io::stdin().read_line(&mut receiver);
Dec 06 06:34:48.433 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:48.433 INFO [stderr]    |
Dec 06 06:34:48.433 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:48.433 INFO [stderr] 
Dec 06 06:34:48.433 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:48.433 INFO [stderr]   --> src/main.rs:60:17
Dec 06 06:34:48.433 INFO [stderr]    |
Dec 06 06:34:48.433 INFO [stderr] 60 |                 io::stdout().flush();
Dec 06 06:34:48.433 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:48.433 INFO [stderr]    |
Dec 06 06:34:48.433 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:48.433 INFO [stderr] 
Dec 06 06:34:48.434 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:48.434 INFO [stderr]   --> src/main.rs:61:17
Dec 06 06:34:48.434 INFO [stderr]    |
Dec 06 06:34:48.434 INFO [stderr] 61 |                 io::stdin().read_line(&mut amount);
Dec 06 06:34:48.434 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:48.434 INFO [stderr]    |
Dec 06 06:34:48.434 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:48.434 INFO [stderr] 
Dec 06 06:34:48.434 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:48.434 INFO [stderr]   --> src/main.rs:80:17
Dec 06 06:34:48.434 INFO [stderr]    |
Dec 06 06:34:48.434 INFO [stderr] 80 |                 io::stdout().flush();
Dec 06 06:34:48.434 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:48.434 INFO [stderr]    |
Dec 06 06:34:48.434 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:48.434 INFO [stderr] 
Dec 06 06:34:48.434 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:48.434 INFO [stderr]   --> src/main.rs:81:17
Dec 06 06:34:48.434 INFO [stderr]    |
Dec 06 06:34:48.434 INFO [stderr] 81 |                 io::stdin().read_line(&mut new_diff);
Dec 06 06:34:48.434 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:48.434 INFO [stderr]    |
Dec 06 06:34:48.434 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:48.434 INFO [stderr] 
Dec 06 06:34:48.434 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:48.434 INFO [stderr]   --> src/main.rs:93:17
Dec 06 06:34:48.434 INFO [stderr]    |
Dec 06 06:34:48.434 INFO [stderr] 93 |                 io::stdout().flush();
Dec 06 06:34:48.434 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:48.434 INFO [stderr]    |
Dec 06 06:34:48.434 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:48.434 INFO [stderr] 
Dec 06 06:34:48.434 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:34:48.434 INFO [stderr]   --> src/main.rs:94:17
Dec 06 06:34:48.434 INFO [stderr]    |
Dec 06 06:34:48.434 INFO [stderr] 94 |                 io::stdin().read_line(&mut new_reward);
Dec 06 06:34:48.434 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:34:48.434 INFO [stderr]    |
Dec 06 06:34:48.434 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:34:48.434 INFO [stderr] 
Dec 06 06:34:48.781 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.53s
Dec 06 06:34:48.786 INFO [stderr] su: No module specific data is present
Dec 06 06:34:49.928 INFO running `"docker" "inspect" "c39da988b2fc919e5c9b6a65fbec98812871e11d1bef8b5fdf7eca00119b0eb7"`
Dec 06 06:34:50.242 INFO running `"docker" "rm" "-f" "c39da988b2fc919e5c9b6a65fbec98812871e11d1bef8b5fdf7eca00119b0eb7"`
Dec 06 06:34:50.524 INFO [stdout] c39da988b2fc919e5c9b6a65fbec98812871e11d1bef8b5fdf7eca00119b0eb7
Dec 06 06:34:50.528 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-5/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 06 06:34:51.122 INFO [stdout] a23fed4d0c1b04d1d33fc1bd5ed7d5a78ab081d8a3513fe6d1c130d48645fa14
Dec 06 06:34:51.124 INFO running `"docker" "start" "-a" "a23fed4d0c1b04d1d33fc1bd5ed7d5a78ab081d8a3513fe6d1c130d48645fa14"`
Dec 06 06:34:52.336 INFO [stderr] usermod: no changes
Dec 06 06:34:52.428 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
Dec 06 06:34:52.428 INFO [stderr]      Running /target/debug/deps/bfs-f8cef50e24268ff6
Dec 06 06:34:52.436 INFO [stdout] 
Dec 06 06:34:52.436 INFO [stdout] running 0 tests
Dec 06 06:34:52.436 INFO [stdout] 
Dec 06 06:34:52.436 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 06:34:52.436 INFO [stdout] 
Dec 06 06:34:52.436 INFO [stderr] su: No module specific data is present
Dec 06 06:34:53.010 INFO running `"docker" "inspect" "a23fed4d0c1b04d1d33fc1bd5ed7d5a78ab081d8a3513fe6d1c130d48645fa14"`
Dec 06 06:34:53.232 INFO running `"docker" "rm" "-f" "a23fed4d0c1b04d1d33fc1bd5ed7d5a78ab081d8a3513fe6d1c130d48645fa14"`
Dec 06 06:34:53.452 INFO [stdout] a23fed4d0c1b04d1d33fc1bd5ed7d5a78ab081d8a3513fe6d1c130d48645fa14