Dec 05 16:33:10.169 INFO testing lezwon/Blockchain-from-Scratch against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 05 16:33:10.169 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 05 16:33:10.340 INFO [stdout] 75d6514791b721331e3ec8fd29d070c1695889c9af8c389eb499c2020465ed89
Dec 05 16:33:10.344 INFO running `"docker" "start" "-a" "75d6514791b721331e3ec8fd29d070c1695889c9af8c389eb499c2020465ed89"`
Dec 05 16:33:10.812 INFO [stderr] usermod: no changes
Dec 05 16:33:10.893 INFO [stderr]    Compiling serde_json v1.0.6
Dec 05 16:33:14.984 INFO [stderr]    Compiling blockchain-rust v0.1.0 (/source)
Dec 05 16:33:15.876 INFO [stderr] warning: variable does not need to be mutable
Dec 05 16:33:15.876 INFO [stderr]   --> src/main.rs:94:8
Dec 05 16:33:15.876 INFO [stderr]    |
Dec 05 16:33:15.876 INFO [stderr] 94 |             let mut block_header = BlockHeader{
Dec 05 16:33:15.876 INFO [stderr]    |                 ----^^^^^^^^^^^^
Dec 05 16:33:15.876 INFO [stderr]    |                 |
Dec 05 16:33:15.876 INFO [stderr]    |                 help: remove this `mut`
Dec 05 16:33:15.876 INFO [stderr]    |
Dec 05 16:33:15.876 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 16:33:15.876 INFO [stderr] 
Dec 05 16:33:15.893 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:15.893 INFO [stderr]    --> src/main.rs:210:2
Dec 05 16:33:15.893 INFO [stderr]     |
Dec 05 16:33:15.893 INFO [stderr] 210 |     io::stdout().flush();
Dec 05 16:33:15.893 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:15.893 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 16:33:15.894 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:15.894 INFO [stderr] 
Dec 05 16:33:15.894 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:15.894 INFO [stderr]    --> src/main.rs:211:2
Dec 05 16:33:15.894 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr] 211 |     io::stdin().read_line(&mut miner_address);
Dec 05 16:33:15.894 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:15.894 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:15.894 INFO [stderr] 
Dec 05 16:33:15.894 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:15.894 INFO [stderr]    --> src/main.rs:213:2
Dec 05 16:33:15.894 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr] 213 |     io::stdout().flush();
Dec 05 16:33:15.894 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:15.894 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:15.894 INFO [stderr] 
Dec 05 16:33:15.894 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:15.894 INFO [stderr]    --> src/main.rs:214:2
Dec 05 16:33:15.894 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr] 214 |     io::stdin().read_line(&mut difficulty_string);
Dec 05 16:33:15.894 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:15.894 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:15.894 INFO [stderr] 
Dec 05 16:33:15.894 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:15.894 INFO [stderr]    --> src/main.rs:229:3
Dec 05 16:33:15.894 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr] 229 |         io::stdout().flush();
Dec 05 16:33:15.894 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:15.894 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:15.894 INFO [stderr] 
Dec 05 16:33:15.894 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:15.894 INFO [stderr]    --> src/main.rs:231:3
Dec 05 16:33:15.894 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr] 231 |         io::stdin().read_line(&mut choice);
Dec 05 16:33:15.894 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:15.894 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:15.894 INFO [stderr] 
Dec 05 16:33:15.894 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:15.894 INFO [stderr]    --> src/main.rs:247:5
Dec 05 16:33:15.894 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr] 247 |                 io::stdout().flush();
Dec 05 16:33:15.894 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:15.894 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:15.894 INFO [stderr] 
Dec 05 16:33:15.894 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:15.894 INFO [stderr]    --> src/main.rs:248:5
Dec 05 16:33:15.894 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr] 248 |                 io::stdin().read_line(&mut sender);
Dec 05 16:33:15.894 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:15.894 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:15.894 INFO [stderr] 
Dec 05 16:33:15.894 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:15.894 INFO [stderr]    --> src/main.rs:250:5
Dec 05 16:33:15.894 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr] 250 |                 io::stdout().flush();
Dec 05 16:33:15.894 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:15.894 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:15.894 INFO [stderr] 
Dec 05 16:33:15.894 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:15.894 INFO [stderr]    --> src/main.rs:251:5
Dec 05 16:33:15.894 INFO [stderr]     |
Dec 05 16:33:15.894 INFO [stderr] 251 |                 io::stdin().read_line(&mut recipient);
Dec 05 16:33:15.895 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:15.895 INFO [stderr]     |
Dec 05 16:33:15.895 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:15.895 INFO [stderr] 
Dec 05 16:33:15.895 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:15.895 INFO [stderr]    --> src/main.rs:253:5
Dec 05 16:33:15.895 INFO [stderr]     |
Dec 05 16:33:15.895 INFO [stderr] 253 |                 io::stdout().flush();
Dec 05 16:33:15.895 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:15.895 INFO [stderr]     |
Dec 05 16:33:15.895 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:15.895 INFO [stderr] 
Dec 05 16:33:15.895 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:15.895 INFO [stderr]    --> src/main.rs:254:5
Dec 05 16:33:15.895 INFO [stderr]     |
Dec 05 16:33:15.895 INFO [stderr] 254 |                 io::stdin().read_line(&mut amount);
Dec 05 16:33:15.895 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:15.895 INFO [stderr]     |
Dec 05 16:33:15.895 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:15.895 INFO [stderr] 
Dec 05 16:33:15.895 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:15.895 INFO [stderr]    --> src/main.rs:274:5
Dec 05 16:33:15.895 INFO [stderr]     |
Dec 05 16:33:15.895 INFO [stderr] 274 |                 io::stdout().flush();
Dec 05 16:33:15.895 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:15.895 INFO [stderr]     |
Dec 05 16:33:15.895 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:15.895 INFO [stderr] 
Dec 05 16:33:15.895 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:15.895 INFO [stderr]    --> src/main.rs:275:5
Dec 05 16:33:15.895 INFO [stderr]     |
Dec 05 16:33:15.895 INFO [stderr] 275 |                 io::stdin().read_line(&mut new_difficulty);
Dec 05 16:33:15.895 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:15.895 INFO [stderr]     |
Dec 05 16:33:15.895 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:15.895 INFO [stderr] 
Dec 05 16:33:15.895 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:15.895 INFO [stderr]    --> src/main.rs:286:5
Dec 05 16:33:15.895 INFO [stderr]     |
Dec 05 16:33:15.895 INFO [stderr] 286 |                 io::stdout().flush();
Dec 05 16:33:15.895 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:15.895 INFO [stderr]     |
Dec 05 16:33:15.895 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:15.895 INFO [stderr] 
Dec 05 16:33:15.895 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:15.895 INFO [stderr]    --> src/main.rs:287:5
Dec 05 16:33:15.895 INFO [stderr]     |
Dec 05 16:33:15.895 INFO [stderr] 287 |                 io::stdin().read_line(&mut new_reward);
Dec 05 16:33:15.895 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:15.895 INFO [stderr]     |
Dec 05 16:33:15.895 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:15.895 INFO [stderr] 
Dec 05 16:33:17.240 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.40s
Dec 05 16:33:17.246 INFO [stderr] su: No module specific data is present
Dec 05 16:33:17.826 INFO running `"docker" "inspect" "75d6514791b721331e3ec8fd29d070c1695889c9af8c389eb499c2020465ed89"`
Dec 05 16:33:18.194 INFO running `"docker" "rm" "-f" "75d6514791b721331e3ec8fd29d070c1695889c9af8c389eb499c2020465ed89"`
Dec 05 16:33:18.455 INFO [stdout] 75d6514791b721331e3ec8fd29d070c1695889c9af8c389eb499c2020465ed89
Dec 05 16:33:18.462 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 05 16:33:18.872 INFO [stdout] 09047dc5923bdc82fc4dd26e9944fcae0bb4489caf8949dbd9f4316cb361c615
Dec 05 16:33:18.884 INFO running `"docker" "start" "-a" "09047dc5923bdc82fc4dd26e9944fcae0bb4489caf8949dbd9f4316cb361c615"`
Dec 05 16:33:20.062 INFO [stderr] usermod: no changes
Dec 05 16:33:20.188 INFO [stderr]    Compiling blockchain-rust v0.1.0 (/source)
Dec 05 16:33:20.977 INFO [stderr] warning: variable does not need to be mutable
Dec 05 16:33:20.977 INFO [stderr]   --> src/main.rs:94:8
Dec 05 16:33:20.977 INFO [stderr]    |
Dec 05 16:33:20.977 INFO [stderr] 94 |             let mut block_header = BlockHeader{
Dec 05 16:33:20.977 INFO [stderr]    |                 ----^^^^^^^^^^^^
Dec 05 16:33:20.977 INFO [stderr]    |                 |
Dec 05 16:33:20.977 INFO [stderr]    |                 help: remove this `mut`
Dec 05 16:33:20.977 INFO [stderr]    |
Dec 05 16:33:20.977 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 16:33:20.977 INFO [stderr] 
Dec 05 16:33:20.984 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:20.984 INFO [stderr]    --> src/main.rs:210:2
Dec 05 16:33:20.984 INFO [stderr]     |
Dec 05 16:33:20.984 INFO [stderr] 210 |     io::stdout().flush();
Dec 05 16:33:20.984 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:20.984 INFO [stderr]     |
Dec 05 16:33:20.984 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 16:33:20.984 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:20.984 INFO [stderr] 
Dec 05 16:33:20.984 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:20.984 INFO [stderr]    --> src/main.rs:211:2
Dec 05 16:33:20.984 INFO [stderr]     |
Dec 05 16:33:20.984 INFO [stderr] 211 |     io::stdin().read_line(&mut miner_address);
Dec 05 16:33:20.984 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:20.984 INFO [stderr]     |
Dec 05 16:33:20.984 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:20.984 INFO [stderr] 
Dec 05 16:33:20.984 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:20.984 INFO [stderr]    --> src/main.rs:213:2
Dec 05 16:33:20.984 INFO [stderr]     |
Dec 05 16:33:20.984 INFO [stderr] 213 |     io::stdout().flush();
Dec 05 16:33:20.984 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:20.984 INFO [stderr]     |
Dec 05 16:33:20.984 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:20.984 INFO [stderr] 
Dec 05 16:33:20.984 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:20.984 INFO [stderr]    --> src/main.rs:214:2
Dec 05 16:33:20.984 INFO [stderr]     |
Dec 05 16:33:20.984 INFO [stderr] 214 |     io::stdin().read_line(&mut difficulty_string);
Dec 05 16:33:20.984 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:20.984 INFO [stderr]     |
Dec 05 16:33:20.984 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:20.984 INFO [stderr] 
Dec 05 16:33:20.984 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:20.984 INFO [stderr]    --> src/main.rs:229:3
Dec 05 16:33:20.984 INFO [stderr]     |
Dec 05 16:33:20.984 INFO [stderr] 229 |         io::stdout().flush();
Dec 05 16:33:20.984 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:20.984 INFO [stderr]     |
Dec 05 16:33:20.984 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:20.984 INFO [stderr] 
Dec 05 16:33:20.984 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:20.984 INFO [stderr]    --> src/main.rs:231:3
Dec 05 16:33:20.984 INFO [stderr]     |
Dec 05 16:33:20.984 INFO [stderr] 231 |         io::stdin().read_line(&mut choice);
Dec 05 16:33:20.984 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:20.984 INFO [stderr]     |
Dec 05 16:33:20.984 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:20.984 INFO [stderr] 
Dec 05 16:33:20.984 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:20.985 INFO [stderr]    --> src/main.rs:247:5
Dec 05 16:33:20.985 INFO [stderr]     |
Dec 05 16:33:20.985 INFO [stderr] 247 |                 io::stdout().flush();
Dec 05 16:33:20.985 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:20.985 INFO [stderr]     |
Dec 05 16:33:20.985 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:20.985 INFO [stderr] 
Dec 05 16:33:20.985 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:20.985 INFO [stderr]    --> src/main.rs:248:5
Dec 05 16:33:20.985 INFO [stderr]     |
Dec 05 16:33:20.985 INFO [stderr] 248 |                 io::stdin().read_line(&mut sender);
Dec 05 16:33:20.985 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:20.985 INFO [stderr]     |
Dec 05 16:33:20.985 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:20.985 INFO [stderr] 
Dec 05 16:33:20.985 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:20.985 INFO [stderr]    --> src/main.rs:250:5
Dec 05 16:33:20.985 INFO [stderr]     |
Dec 05 16:33:20.985 INFO [stderr] 250 |                 io::stdout().flush();
Dec 05 16:33:20.985 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:20.985 INFO [stderr]     |
Dec 05 16:33:20.985 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:20.985 INFO [stderr] 
Dec 05 16:33:20.985 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:20.985 INFO [stderr]    --> src/main.rs:251:5
Dec 05 16:33:20.985 INFO [stderr]     |
Dec 05 16:33:20.985 INFO [stderr] 251 |                 io::stdin().read_line(&mut recipient);
Dec 05 16:33:20.985 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:20.985 INFO [stderr]     |
Dec 05 16:33:20.985 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:20.985 INFO [stderr] 
Dec 05 16:33:20.985 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:20.985 INFO [stderr]    --> src/main.rs:253:5
Dec 05 16:33:20.985 INFO [stderr]     |
Dec 05 16:33:20.985 INFO [stderr] 253 |                 io::stdout().flush();
Dec 05 16:33:20.985 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:20.985 INFO [stderr]     |
Dec 05 16:33:20.985 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:20.985 INFO [stderr] 
Dec 05 16:33:20.985 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:20.985 INFO [stderr]    --> src/main.rs:254:5
Dec 05 16:33:20.985 INFO [stderr]     |
Dec 05 16:33:20.985 INFO [stderr] 254 |                 io::stdin().read_line(&mut amount);
Dec 05 16:33:20.985 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:20.985 INFO [stderr]     |
Dec 05 16:33:20.985 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:20.987 INFO [stderr] 
Dec 05 16:33:20.987 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:20.987 INFO [stderr]    --> src/main.rs:274:5
Dec 05 16:33:20.987 INFO [stderr]     |
Dec 05 16:33:20.987 INFO [stderr] 274 |                 io::stdout().flush();
Dec 05 16:33:20.987 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:20.987 INFO [stderr]     |
Dec 05 16:33:20.987 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:20.987 INFO [stderr] 
Dec 05 16:33:20.987 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:20.987 INFO [stderr]    --> src/main.rs:275:5
Dec 05 16:33:20.987 INFO [stderr]     |
Dec 05 16:33:20.987 INFO [stderr] 275 |                 io::stdin().read_line(&mut new_difficulty);
Dec 05 16:33:20.987 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:20.987 INFO [stderr]     |
Dec 05 16:33:20.987 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:20.987 INFO [stderr] 
Dec 05 16:33:20.987 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:20.987 INFO [stderr]    --> src/main.rs:286:5
Dec 05 16:33:20.987 INFO [stderr]     |
Dec 05 16:33:20.987 INFO [stderr] 286 |                 io::stdout().flush();
Dec 05 16:33:20.987 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:20.987 INFO [stderr]     |
Dec 05 16:33:20.987 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:20.987 INFO [stderr] 
Dec 05 16:33:20.987 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 16:33:20.987 INFO [stderr]    --> src/main.rs:287:5
Dec 05 16:33:20.987 INFO [stderr]     |
Dec 05 16:33:20.987 INFO [stderr] 287 |                 io::stdin().read_line(&mut new_reward);
Dec 05 16:33:20.987 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:33:20.987 INFO [stderr]     |
Dec 05 16:33:20.987 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 16:33:20.987 INFO [stderr] 
Dec 05 16:33:21.274 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
Dec 05 16:33:21.276 INFO [stderr] su: No module specific data is present
Dec 05 16:33:21.888 INFO running `"docker" "inspect" "09047dc5923bdc82fc4dd26e9944fcae0bb4489caf8949dbd9f4316cb361c615"`
Dec 05 16:33:22.198 INFO running `"docker" "rm" "-f" "09047dc5923bdc82fc4dd26e9944fcae0bb4489caf8949dbd9f4316cb361c615"`
Dec 05 16:33:22.492 INFO [stdout] 09047dc5923bdc82fc4dd26e9944fcae0bb4489caf8949dbd9f4316cb361c615
Dec 05 16:33:22.498 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 05 16:33:22.971 INFO [stdout] 633ffdf01d5a3e1e8ed642d4c87a07e24435376f8e3bbdafa481c7e737f54e56
Dec 05 16:33:22.980 INFO running `"docker" "start" "-a" "633ffdf01d5a3e1e8ed642d4c87a07e24435376f8e3bbdafa481c7e737f54e56"`
Dec 05 16:33:24.088 INFO [stderr] usermod: no changes
Dec 05 16:33:24.208 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
Dec 05 16:33:24.228 INFO [stderr]      Running /target/debug/deps/blockchain_rust-b1acb751f71893fd
Dec 05 16:33:24.228 INFO [stdout] 
Dec 05 16:33:24.228 INFO [stderr] su: No module specific data is present
Dec 05 16:33:24.228 INFO [stdout] running 0 tests
Dec 05 16:33:24.228 INFO [stdout] 
Dec 05 16:33:24.228 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 16:33:24.228 INFO [stdout] 
Dec 05 16:33:24.888 INFO running `"docker" "inspect" "633ffdf01d5a3e1e8ed642d4c87a07e24435376f8e3bbdafa481c7e737f54e56"`
Dec 05 16:33:25.165 INFO running `"docker" "rm" "-f" "633ffdf01d5a3e1e8ed642d4c87a07e24435376f8e3bbdafa481c7e737f54e56"`
Dec 05 16:33:25.468 INFO [stdout] 633ffdf01d5a3e1e8ed642d4c87a07e24435376f8e3bbdafa481c7e737f54e56