Dec 02 09:19:19.035 INFO testing AvishaiW/toy-blochain-rust against 1.30.1 for beta-1.31-5
Dec 02 09:19:19.035 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/beta-1.31-5/1.30.1:/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 +1.30.1 build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 09:19:19.277 INFO [stdout] 3bba1ff717587bde351ff4b1691e17577cfadc305fbf69c9f13c5f26fd74ba5f
Dec 02 09:19:19.280 INFO running `"docker" "start" "-a" "3bba1ff717587bde351ff4b1691e17577cfadc305fbf69c9f13c5f26fd74ba5f"`
Dec 02 09:19:19.791 INFO [stderr] usermod: no changes
Dec 02 09:19:19.883 INFO [stderr]    Compiling byteorder v1.2.6
Dec 02 09:19:20.260 INFO [stderr]    Compiling block-buffer v0.7.0
Dec 02 09:19:20.703 INFO [stderr]    Compiling sha2 v0.8.0
Dec 02 09:19:22.176 INFO [stderr]    Compiling blockchain v0.1.0 (/source)
Dec 02 09:19:23.807 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:23.807 INFO [stderr]   --> src/main.rs:16:5
Dec 02 09:19:23.807 INFO [stderr]    |
Dec 02 09:19:23.807 INFO [stderr] 16 |     io::stdout().flush();
Dec 02 09:19:23.807 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:23.807 INFO [stderr]    |
Dec 02 09:19:23.807 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 02 09:19:23.827 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:23.827 INFO [stderr] 
Dec 02 09:19:23.827 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:23.827 INFO [stderr]   --> src/main.rs:17:5
Dec 02 09:19:23.827 INFO [stderr]    |
Dec 02 09:19:23.827 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_addr);
Dec 02 09:19:23.827 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:23.827 INFO [stderr]    |
Dec 02 09:19:23.827 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:23.827 INFO [stderr] 
Dec 02 09:19:23.827 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:23.827 INFO [stderr]   --> src/main.rs:19:5
Dec 02 09:19:23.827 INFO [stderr]    |
Dec 02 09:19:23.827 INFO [stderr] 19 |     io::stdout().flush();
Dec 02 09:19:23.827 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:23.827 INFO [stderr]    |
Dec 02 09:19:23.827 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:23.827 INFO [stderr] 
Dec 02 09:19:23.827 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:23.827 INFO [stderr]   --> src/main.rs:20:5
Dec 02 09:19:23.827 INFO [stderr]    |
Dec 02 09:19:23.827 INFO [stderr] 20 |     io::stdin().read_line(&mut difficulty);
Dec 02 09:19:23.827 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:23.827 INFO [stderr]    |
Dec 02 09:19:23.827 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:23.827 INFO [stderr] 
Dec 02 09:19:23.827 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:23.827 INFO [stderr]   --> src/main.rs:33:9
Dec 02 09:19:23.827 INFO [stderr]    |
Dec 02 09:19:23.827 INFO [stderr] 33 |         io::stdout().flush();
Dec 02 09:19:23.827 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:23.827 INFO [stderr]    |
Dec 02 09:19:23.827 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:23.827 INFO [stderr] 
Dec 02 09:19:23.827 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:23.827 INFO [stderr]   --> src/main.rs:35:9
Dec 02 09:19:23.827 INFO [stderr]    |
Dec 02 09:19:23.827 INFO [stderr] 35 |         io::stdin().read_line(&mut choice);
Dec 02 09:19:23.827 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:23.827 INFO [stderr]    |
Dec 02 09:19:23.827 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:23.827 INFO [stderr] 
Dec 02 09:19:23.827 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:23.827 INFO [stderr]   --> src/main.rs:50:17
Dec 02 09:19:23.827 INFO [stderr]    |
Dec 02 09:19:23.827 INFO [stderr] 50 |                 io::stdout().flush();
Dec 02 09:19:23.827 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:23.827 INFO [stderr]    |
Dec 02 09:19:23.827 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:23.828 INFO [stderr] 
Dec 02 09:19:23.828 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:23.828 INFO [stderr]   --> src/main.rs:51:17
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr] 51 |                 io::stdin().read_line(&mut sender);
Dec 02 09:19:23.828 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:23.828 INFO [stderr] 
Dec 02 09:19:23.828 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:23.828 INFO [stderr]   --> src/main.rs:53:17
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr] 53 |                 io::stdout().flush();
Dec 02 09:19:23.828 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:23.828 INFO [stderr] 
Dec 02 09:19:23.828 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:23.828 INFO [stderr]   --> src/main.rs:54:17
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr] 54 |                 io::stdin().read_line(&mut receiver);
Dec 02 09:19:23.828 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:23.828 INFO [stderr] 
Dec 02 09:19:23.828 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:23.828 INFO [stderr]   --> src/main.rs:56:17
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr] 56 |                 io::stdout().flush();
Dec 02 09:19:23.828 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:23.828 INFO [stderr] 
Dec 02 09:19:23.828 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:23.828 INFO [stderr]   --> src/main.rs:57:17
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr] 57 |                 io::stdin().read_line(&mut amount);
Dec 02 09:19:23.828 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:23.828 INFO [stderr] 
Dec 02 09:19:23.828 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:23.828 INFO [stderr]   --> src/main.rs:81:21
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr] 81 |                     io::stdout().flush();
Dec 02 09:19:23.828 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:23.828 INFO [stderr] 
Dec 02 09:19:23.828 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:23.828 INFO [stderr]   --> src/main.rs:82:21
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr] 82 |                     io::stdin().read_line(&mut new_diff);
Dec 02 09:19:23.828 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:23.828 INFO [stderr] 
Dec 02 09:19:23.828 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:23.828 INFO [stderr]   --> src/main.rs:92:17
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr] 92 |                 io::stdout().flush();
Dec 02 09:19:23.828 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:23.828 INFO [stderr] 
Dec 02 09:19:23.828 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:23.828 INFO [stderr]   --> src/main.rs:93:17
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr] 93 |                 io::stdin().read_line(&mut new_reward);
Dec 02 09:19:23.828 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:23.828 INFO [stderr]    |
Dec 02 09:19:23.828 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:23.828 INFO [stderr] 
Dec 02 09:19:24.731 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.92s
Dec 02 09:19:24.734 INFO [stderr] su: No module specific data is present
Dec 02 09:19:25.243 INFO running `"docker" "inspect" "3bba1ff717587bde351ff4b1691e17577cfadc305fbf69c9f13c5f26fd74ba5f"`
Dec 02 09:19:25.433 INFO running `"docker" "rm" "-f" "3bba1ff717587bde351ff4b1691e17577cfadc305fbf69c9f13c5f26fd74ba5f"`
Dec 02 09:19:25.563 INFO [stdout] 3bba1ff717587bde351ff4b1691e17577cfadc305fbf69c9f13c5f26fd74ba5f
Dec 02 09:19:25.567 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/beta-1.31-5/1.30.1:/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 +1.30.1 test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 09:19:25.989 INFO [stdout] 6f3ac342569e216809fe16405241ecdd79d4fcfbf6cc4d6ce1efe8240ffee537
Dec 02 09:19:25.992 INFO running `"docker" "start" "-a" "6f3ac342569e216809fe16405241ecdd79d4fcfbf6cc4d6ce1efe8240ffee537"`
Dec 02 09:19:26.746 INFO [stderr] usermod: no changes
Dec 02 09:19:26.807 INFO [stderr]    Compiling blockchain v0.1.0 (/source)
Dec 02 09:19:28.075 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:28.075 INFO [stderr]   --> src/main.rs:16:5
Dec 02 09:19:28.075 INFO [stderr]    |
Dec 02 09:19:28.075 INFO [stderr] 16 |     io::stdout().flush();
Dec 02 09:19:28.075 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:28.075 INFO [stderr]    |
Dec 02 09:19:28.075 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 02 09:19:28.075 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:28.075 INFO [stderr] 
Dec 02 09:19:28.075 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:28.075 INFO [stderr]   --> src/main.rs:17:5
Dec 02 09:19:28.075 INFO [stderr]    |
Dec 02 09:19:28.075 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_addr);
Dec 02 09:19:28.075 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:28.075 INFO [stderr]    |
Dec 02 09:19:28.075 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:28.075 INFO [stderr] 
Dec 02 09:19:28.075 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:28.075 INFO [stderr]   --> src/main.rs:19:5
Dec 02 09:19:28.075 INFO [stderr]    |
Dec 02 09:19:28.075 INFO [stderr] 19 |     io::stdout().flush();
Dec 02 09:19:28.075 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:28.075 INFO [stderr]    |
Dec 02 09:19:28.075 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:28.075 INFO [stderr] 
Dec 02 09:19:28.075 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:28.075 INFO [stderr]   --> src/main.rs:20:5
Dec 02 09:19:28.075 INFO [stderr]    |
Dec 02 09:19:28.075 INFO [stderr] 20 |     io::stdin().read_line(&mut difficulty);
Dec 02 09:19:28.075 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:28.075 INFO [stderr]    |
Dec 02 09:19:28.075 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:28.075 INFO [stderr] 
Dec 02 09:19:28.075 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:28.075 INFO [stderr]   --> src/main.rs:33:9
Dec 02 09:19:28.075 INFO [stderr]    |
Dec 02 09:19:28.075 INFO [stderr] 33 |         io::stdout().flush();
Dec 02 09:19:28.075 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:28.075 INFO [stderr]    |
Dec 02 09:19:28.075 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:28.075 INFO [stderr] 
Dec 02 09:19:28.075 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:28.075 INFO [stderr]   --> src/main.rs:35:9
Dec 02 09:19:28.075 INFO [stderr]    |
Dec 02 09:19:28.075 INFO [stderr] 35 |         io::stdin().read_line(&mut choice);
Dec 02 09:19:28.075 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:28.075 INFO [stderr]    |
Dec 02 09:19:28.075 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:28.075 INFO [stderr] 
Dec 02 09:19:28.075 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:28.075 INFO [stderr]   --> src/main.rs:50:17
Dec 02 09:19:28.075 INFO [stderr]    |
Dec 02 09:19:28.075 INFO [stderr] 50 |                 io::stdout().flush();
Dec 02 09:19:28.075 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:28.075 INFO [stderr]    |
Dec 02 09:19:28.075 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:28.075 INFO [stderr] 
Dec 02 09:19:28.075 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:28.075 INFO [stderr]   --> src/main.rs:51:17
Dec 02 09:19:28.075 INFO [stderr]    |
Dec 02 09:19:28.075 INFO [stderr] 51 |                 io::stdin().read_line(&mut sender);
Dec 02 09:19:28.075 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:28.075 INFO [stderr]    |
Dec 02 09:19:28.075 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:28.075 INFO [stderr] 
Dec 02 09:19:28.075 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:28.075 INFO [stderr]   --> src/main.rs:53:17
Dec 02 09:19:28.075 INFO [stderr]    |
Dec 02 09:19:28.075 INFO [stderr] 53 |                 io::stdout().flush();
Dec 02 09:19:28.075 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:28.076 INFO [stderr]    |
Dec 02 09:19:28.076 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:28.076 INFO [stderr] 
Dec 02 09:19:28.076 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:28.076 INFO [stderr]   --> src/main.rs:54:17
Dec 02 09:19:28.076 INFO [stderr]    |
Dec 02 09:19:28.076 INFO [stderr] 54 |                 io::stdin().read_line(&mut receiver);
Dec 02 09:19:28.076 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:28.076 INFO [stderr]    |
Dec 02 09:19:28.076 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:28.076 INFO [stderr] 
Dec 02 09:19:28.076 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:28.076 INFO [stderr]   --> src/main.rs:56:17
Dec 02 09:19:28.076 INFO [stderr]    |
Dec 02 09:19:28.076 INFO [stderr] 56 |                 io::stdout().flush();
Dec 02 09:19:28.076 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:28.076 INFO [stderr]    |
Dec 02 09:19:28.076 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:28.076 INFO [stderr] 
Dec 02 09:19:28.076 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:28.076 INFO [stderr]   --> src/main.rs:57:17
Dec 02 09:19:28.076 INFO [stderr]    |
Dec 02 09:19:28.076 INFO [stderr] 57 |                 io::stdin().read_line(&mut amount);
Dec 02 09:19:28.076 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:28.076 INFO [stderr]    |
Dec 02 09:19:28.076 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:28.076 INFO [stderr] 
Dec 02 09:19:28.076 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:28.076 INFO [stderr]   --> src/main.rs:81:21
Dec 02 09:19:28.076 INFO [stderr]    |
Dec 02 09:19:28.076 INFO [stderr] 81 |                     io::stdout().flush();
Dec 02 09:19:28.076 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:28.076 INFO [stderr]    |
Dec 02 09:19:28.076 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:28.076 INFO [stderr] 
Dec 02 09:19:28.076 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:28.076 INFO [stderr]   --> src/main.rs:82:21
Dec 02 09:19:28.076 INFO [stderr]    |
Dec 02 09:19:28.076 INFO [stderr] 82 |                     io::stdin().read_line(&mut new_diff);
Dec 02 09:19:28.076 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:28.076 INFO [stderr]    |
Dec 02 09:19:28.076 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:28.076 INFO [stderr] 
Dec 02 09:19:28.076 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:28.076 INFO [stderr]   --> src/main.rs:92:17
Dec 02 09:19:28.076 INFO [stderr]    |
Dec 02 09:19:28.076 INFO [stderr] 92 |                 io::stdout().flush();
Dec 02 09:19:28.076 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:28.076 INFO [stderr]    |
Dec 02 09:19:28.076 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:28.076 INFO [stderr] 
Dec 02 09:19:28.076 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 02 09:19:28.076 INFO [stderr]   --> src/main.rs:93:17
Dec 02 09:19:28.076 INFO [stderr]    |
Dec 02 09:19:28.076 INFO [stderr] 93 |                 io::stdin().read_line(&mut new_reward);
Dec 02 09:19:28.076 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:19:28.077 INFO [stderr]    |
Dec 02 09:19:28.077 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 09:19:28.077 INFO [stderr] 
Dec 02 09:19:28.462 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.70s
Dec 02 09:19:28.467 INFO [stderr] su: No module specific data is present
Dec 02 09:19:28.808 INFO running `"docker" "inspect" "6f3ac342569e216809fe16405241ecdd79d4fcfbf6cc4d6ce1efe8240ffee537"`
Dec 02 09:19:28.964 INFO running `"docker" "rm" "-f" "6f3ac342569e216809fe16405241ecdd79d4fcfbf6cc4d6ce1efe8240ffee537"`
Dec 02 09:19:29.079 INFO [stdout] 6f3ac342569e216809fe16405241ecdd79d4fcfbf6cc4d6ce1efe8240ffee537
Dec 02 09:19:29.081 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/beta-1.31-5/1.30.1:/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 +1.30.1 test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 09:19:29.266 INFO [stdout] 712708d672f63ae7cd52baed317c606bae0298c9eabec861123fa19a990c1872
Dec 02 09:19:29.273 INFO running `"docker" "start" "-a" "712708d672f63ae7cd52baed317c606bae0298c9eabec861123fa19a990c1872"`
Dec 02 09:19:29.822 INFO [stderr] usermod: no changes
Dec 02 09:19:29.900 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
Dec 02 09:19:29.915 INFO [stderr]      Running /target/debug/deps/blockchain-a4c67cfc40cbff3c
Dec 02 09:19:29.915 INFO [stdout] 
Dec 02 09:19:29.915 INFO [stderr] su: No module specific data is present
Dec 02 09:19:29.915 INFO [stdout] running 0 tests
Dec 02 09:19:29.915 INFO [stdout] 
Dec 02 09:19:29.915 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 02 09:19:29.915 INFO [stdout] 
Dec 02 09:19:30.292 INFO running `"docker" "inspect" "712708d672f63ae7cd52baed317c606bae0298c9eabec861123fa19a990c1872"`
Dec 02 09:19:30.393 INFO running `"docker" "rm" "-f" "712708d672f63ae7cd52baed317c606bae0298c9eabec861123fa19a990c1872"`
Dec 02 09:19:30.520 INFO [stdout] 712708d672f63ae7cd52baed317c606bae0298c9eabec861123fa19a990c1872
