Dec 05 00:46:22.468 INFO testing yogesum/blockchain-rs against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 05 00:46:22.469 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 05 00:46:23.060 INFO [stdout] bb8f9b8672100a54333570c5f9e2732abf4e9e71ed33f5b438bd3c959cb2cfed
Dec 05 00:46:23.063 INFO running `"docker" "start" "-a" "bb8f9b8672100a54333570c5f9e2732abf4e9e71ed33f5b438bd3c959cb2cfed"`
Dec 05 00:46:24.169 INFO [stderr] usermod: no changes
Dec 05 00:46:24.292 INFO [stderr]    Compiling arrayref v0.3.4
Dec 05 00:46:24.292 INFO [stderr]    Compiling dtoa v0.4.2
Dec 05 00:46:24.293 INFO [stderr]    Compiling serde v1.0.37
Dec 05 00:46:24.293 INFO [stderr]    Compiling itoa v0.4.1
Dec 05 00:46:24.295 INFO [stderr]    Compiling num-traits v0.2.2
Dec 05 00:46:24.296 INFO [stderr]    Compiling proc-macro2 v0.3.1
Dec 05 00:46:24.296 INFO [stderr]    Compiling digest v0.7.2
Dec 05 00:46:24.846 INFO [stderr]    Compiling block-buffer v0.3.3
Dec 05 00:46:26.508 INFO [stderr]    Compiling sha2 v0.7.0
Dec 05 00:46:29.684 INFO [stderr]    Compiling quote v0.5.1
Dec 05 00:46:30.708 INFO [stderr]    Compiling syn v0.13.1
Dec 05 00:46:42.408 INFO [stderr]    Compiling serde_derive_internals v0.23.0
Dec 05 00:46:47.944 INFO [stderr]    Compiling serde_derive v1.0.37
Dec 05 00:46:49.390 INFO [stderr]    Compiling serde_json v1.0.13
Dec 05 00:47:02.538 INFO [stderr]    Compiling blockchain-rs v0.1.0 (/source)
Dec 05 00:47:03.028 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:03.028 INFO [stderr]   --> src/main.rs:16:5
Dec 05 00:47:03.028 INFO [stderr]    |
Dec 05 00:47:03.028 INFO [stderr] 16 |     io::stdout().flush();
Dec 05 00:47:03.028 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:03.028 INFO [stderr]    |
Dec 05 00:47:03.028 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 00:47:03.028 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:03.028 INFO [stderr] 
Dec 05 00:47:03.028 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:03.028 INFO [stderr]   --> src/main.rs:17:5
Dec 05 00:47:03.028 INFO [stderr]    |
Dec 05 00:47:03.028 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_addr);
Dec 05 00:47:03.028 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:03.028 INFO [stderr]    |
Dec 05 00:47:03.028 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:03.028 INFO [stderr] 
Dec 05 00:47:03.028 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:03.028 INFO [stderr]   --> src/main.rs:20:5
Dec 05 00:47:03.028 INFO [stderr]    |
Dec 05 00:47:03.028 INFO [stderr] 20 |     io::stdout().flush();
Dec 05 00:47:03.028 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:03.028 INFO [stderr]    |
Dec 05 00:47:03.028 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:03.028 INFO [stderr] 
Dec 05 00:47:03.028 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:03.028 INFO [stderr]   --> src/main.rs:21:5
Dec 05 00:47:03.028 INFO [stderr]    |
Dec 05 00:47:03.028 INFO [stderr] 21 |     io::stdin().read_line(&mut difficulty);
Dec 05 00:47:03.028 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:03.028 INFO [stderr]    |
Dec 05 00:47:03.028 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:03.028 INFO [stderr] 
Dec 05 00:47:03.028 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:03.032 INFO [stderr]   --> src/main.rs:38:9
Dec 05 00:47:03.032 INFO [stderr]    |
Dec 05 00:47:03.032 INFO [stderr] 38 |         io::stdout().flush();
Dec 05 00:47:03.032 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:03.032 INFO [stderr]    |
Dec 05 00:47:03.032 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:03.032 INFO [stderr] 
Dec 05 00:47:03.032 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:03.032 INFO [stderr]   --> src/main.rs:41:9
Dec 05 00:47:03.032 INFO [stderr]    |
Dec 05 00:47:03.032 INFO [stderr] 41 |         io::stdin().read_line(&mut choice);
Dec 05 00:47:03.032 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:03.032 INFO [stderr]    |
Dec 05 00:47:03.032 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:03.032 INFO [stderr] 
Dec 05 00:47:03.032 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:03.032 INFO [stderr]   --> src/main.rs:55:17
Dec 05 00:47:03.032 INFO [stderr]    |
Dec 05 00:47:03.032 INFO [stderr] 55 |                 io::stdout().flush();
Dec 05 00:47:03.032 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:03.032 INFO [stderr]    |
Dec 05 00:47:03.032 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:03.032 INFO [stderr] 
Dec 05 00:47:03.032 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:03.032 INFO [stderr]   --> src/main.rs:56:17
Dec 05 00:47:03.032 INFO [stderr]    |
Dec 05 00:47:03.032 INFO [stderr] 56 |                 io::stdin().read_line(&mut sender);
Dec 05 00:47:03.032 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:03.032 INFO [stderr]    |
Dec 05 00:47:03.032 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:03.032 INFO [stderr] 
Dec 05 00:47:03.032 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:03.032 INFO [stderr]   --> src/main.rs:59:17
Dec 05 00:47:03.032 INFO [stderr]    |
Dec 05 00:47:03.032 INFO [stderr] 59 |                 io::stdout().flush();
Dec 05 00:47:03.032 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:03.032 INFO [stderr]    |
Dec 05 00:47:03.032 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:03.032 INFO [stderr] 
Dec 05 00:47:03.032 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:03.032 INFO [stderr]   --> src/main.rs:60:17
Dec 05 00:47:03.032 INFO [stderr]    |
Dec 05 00:47:03.032 INFO [stderr] 60 |                 io::stdin().read_line(&mut receiver);
Dec 05 00:47:03.032 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:03.032 INFO [stderr]    |
Dec 05 00:47:03.032 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:03.032 INFO [stderr] 
Dec 05 00:47:03.032 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:03.032 INFO [stderr]   --> src/main.rs:63:17
Dec 05 00:47:03.032 INFO [stderr]    |
Dec 05 00:47:03.033 INFO [stderr] 63 |                 io::stdout().flush();
Dec 05 00:47:03.033 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:03.033 INFO [stderr]    |
Dec 05 00:47:03.033 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:03.033 INFO [stderr] 
Dec 05 00:47:03.033 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:03.033 INFO [stderr]   --> src/main.rs:64:17
Dec 05 00:47:03.033 INFO [stderr]    |
Dec 05 00:47:03.033 INFO [stderr] 64 |                 io::stdin().read_line(&mut amount);
Dec 05 00:47:03.033 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:03.033 INFO [stderr]    |
Dec 05 00:47:03.033 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:03.033 INFO [stderr] 
Dec 05 00:47:03.033 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:03.033 INFO [stderr]   --> src/main.rs:89:17
Dec 05 00:47:03.033 INFO [stderr]    |
Dec 05 00:47:03.033 INFO [stderr] 89 |                 io::stdout().flush();
Dec 05 00:47:03.033 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:03.033 INFO [stderr]    |
Dec 05 00:47:03.033 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:03.033 INFO [stderr] 
Dec 05 00:47:03.033 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:03.033 INFO [stderr]   --> src/main.rs:90:17
Dec 05 00:47:03.033 INFO [stderr]    |
Dec 05 00:47:03.033 INFO [stderr] 90 |                 io::stdin().read_line(&mut new_diff);
Dec 05 00:47:03.033 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:03.033 INFO [stderr]    |
Dec 05 00:47:03.033 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:03.033 INFO [stderr] 
Dec 05 00:47:03.033 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:03.033 INFO [stderr]    --> src/main.rs:101:17
Dec 05 00:47:03.033 INFO [stderr]     |
Dec 05 00:47:03.033 INFO [stderr] 101 |                 io::stdout().flush();
Dec 05 00:47:03.033 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:03.033 INFO [stderr]     |
Dec 05 00:47:03.033 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:03.033 INFO [stderr] 
Dec 05 00:47:03.033 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:03.033 INFO [stderr]    --> src/main.rs:102:17
Dec 05 00:47:03.033 INFO [stderr]     |
Dec 05 00:47:03.033 INFO [stderr] 102 |                 io::stdin().read_line(&mut new_reward);
Dec 05 00:47:03.033 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:03.033 INFO [stderr]     |
Dec 05 00:47:03.033 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:03.033 INFO [stderr] 
Dec 05 00:47:04.479 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.28s
Dec 05 00:47:04.484 INFO [stderr] su: No module specific data is present
Dec 05 00:47:05.210 INFO running `"docker" "inspect" "bb8f9b8672100a54333570c5f9e2732abf4e9e71ed33f5b438bd3c959cb2cfed"`
Dec 05 00:47:05.514 INFO running `"docker" "rm" "-f" "bb8f9b8672100a54333570c5f9e2732abf4e9e71ed33f5b438bd3c959cb2cfed"`
Dec 05 00:47:05.827 INFO [stdout] bb8f9b8672100a54333570c5f9e2732abf4e9e71ed33f5b438bd3c959cb2cfed
Dec 05 00:47:05.830 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 05 00:47:06.322 INFO [stdout] fd53b281e3818f0dc46429b25e2837eee0ed0476c0dae06cb3c2ad6b92d13ea8
Dec 05 00:47:06.327 INFO running `"docker" "start" "-a" "fd53b281e3818f0dc46429b25e2837eee0ed0476c0dae06cb3c2ad6b92d13ea8"`
Dec 05 00:47:07.512 INFO [stderr] usermod: no changes
Dec 05 00:47:07.652 INFO [stderr]    Compiling blockchain-rs v0.1.0 (/source)
Dec 05 00:47:08.136 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:08.136 INFO [stderr]   --> src/main.rs:16:5
Dec 05 00:47:08.136 INFO [stderr]    |
Dec 05 00:47:08.136 INFO [stderr] 16 |     io::stdout().flush();
Dec 05 00:47:08.136 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:08.136 INFO [stderr]    |
Dec 05 00:47:08.136 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 00:47:08.136 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:08.136 INFO [stderr] 
Dec 05 00:47:08.142 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:08.142 INFO [stderr]   --> src/main.rs:17:5
Dec 05 00:47:08.142 INFO [stderr]    |
Dec 05 00:47:08.142 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_addr);
Dec 05 00:47:08.142 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:08.142 INFO [stderr]    |
Dec 05 00:47:08.142 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:08.142 INFO [stderr] 
Dec 05 00:47:08.142 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:08.142 INFO [stderr]   --> src/main.rs:20:5
Dec 05 00:47:08.142 INFO [stderr]    |
Dec 05 00:47:08.142 INFO [stderr] 20 |     io::stdout().flush();
Dec 05 00:47:08.142 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:08.142 INFO [stderr]    |
Dec 05 00:47:08.142 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:08.142 INFO [stderr] 
Dec 05 00:47:08.142 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:08.142 INFO [stderr]   --> src/main.rs:21:5
Dec 05 00:47:08.142 INFO [stderr]    |
Dec 05 00:47:08.142 INFO [stderr] 21 |     io::stdin().read_line(&mut difficulty);
Dec 05 00:47:08.142 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:08.142 INFO [stderr]    |
Dec 05 00:47:08.142 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:08.142 INFO [stderr] 
Dec 05 00:47:08.142 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:08.142 INFO [stderr]   --> src/main.rs:38:9
Dec 05 00:47:08.142 INFO [stderr]    |
Dec 05 00:47:08.142 INFO [stderr] 38 |         io::stdout().flush();
Dec 05 00:47:08.142 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:08.142 INFO [stderr]    |
Dec 05 00:47:08.142 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:08.142 INFO [stderr] 
Dec 05 00:47:08.142 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:08.142 INFO [stderr]   --> src/main.rs:41:9
Dec 05 00:47:08.142 INFO [stderr]    |
Dec 05 00:47:08.142 INFO [stderr] 41 |         io::stdin().read_line(&mut choice);
Dec 05 00:47:08.142 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:08.142 INFO [stderr]    |
Dec 05 00:47:08.142 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:08.142 INFO [stderr] 
Dec 05 00:47:08.142 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:08.142 INFO [stderr]   --> src/main.rs:55:17
Dec 05 00:47:08.143 INFO [stderr]    |
Dec 05 00:47:08.143 INFO [stderr] 55 |                 io::stdout().flush();
Dec 05 00:47:08.143 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:08.143 INFO [stderr]    |
Dec 05 00:47:08.143 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:08.143 INFO [stderr] 
Dec 05 00:47:08.143 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:08.143 INFO [stderr]   --> src/main.rs:56:17
Dec 05 00:47:08.143 INFO [stderr]    |
Dec 05 00:47:08.143 INFO [stderr] 56 |                 io::stdin().read_line(&mut sender);
Dec 05 00:47:08.143 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:08.143 INFO [stderr]    |
Dec 05 00:47:08.143 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:08.143 INFO [stderr] 
Dec 05 00:47:08.143 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:08.143 INFO [stderr]   --> src/main.rs:59:17
Dec 05 00:47:08.143 INFO [stderr]    |
Dec 05 00:47:08.143 INFO [stderr] 59 |                 io::stdout().flush();
Dec 05 00:47:08.143 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:08.143 INFO [stderr]    |
Dec 05 00:47:08.143 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:08.143 INFO [stderr] 
Dec 05 00:47:08.143 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:08.143 INFO [stderr]   --> src/main.rs:60:17
Dec 05 00:47:08.143 INFO [stderr]    |
Dec 05 00:47:08.143 INFO [stderr] 60 |                 io::stdin().read_line(&mut receiver);
Dec 05 00:47:08.143 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:08.143 INFO [stderr]    |
Dec 05 00:47:08.143 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:08.143 INFO [stderr] 
Dec 05 00:47:08.143 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:08.143 INFO [stderr]   --> src/main.rs:63:17
Dec 05 00:47:08.143 INFO [stderr]    |
Dec 05 00:47:08.143 INFO [stderr] 63 |                 io::stdout().flush();
Dec 05 00:47:08.143 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:08.143 INFO [stderr]    |
Dec 05 00:47:08.143 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:08.143 INFO [stderr] 
Dec 05 00:47:08.143 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:08.143 INFO [stderr]   --> src/main.rs:64:17
Dec 05 00:47:08.143 INFO [stderr]    |
Dec 05 00:47:08.143 INFO [stderr] 64 |                 io::stdin().read_line(&mut amount);
Dec 05 00:47:08.143 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:08.143 INFO [stderr]    |
Dec 05 00:47:08.143 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:08.143 INFO [stderr] 
Dec 05 00:47:08.143 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:08.143 INFO [stderr]   --> src/main.rs:89:17
Dec 05 00:47:08.143 INFO [stderr]    |
Dec 05 00:47:08.143 INFO [stderr] 89 |                 io::stdout().flush();
Dec 05 00:47:08.143 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:08.143 INFO [stderr]    |
Dec 05 00:47:08.143 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:08.143 INFO [stderr] 
Dec 05 00:47:08.143 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:08.143 INFO [stderr]   --> src/main.rs:90:17
Dec 05 00:47:08.143 INFO [stderr]    |
Dec 05 00:47:08.143 INFO [stderr] 90 |                 io::stdin().read_line(&mut new_diff);
Dec 05 00:47:08.143 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:08.143 INFO [stderr]    |
Dec 05 00:47:08.143 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:08.143 INFO [stderr] 
Dec 05 00:47:08.143 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:08.143 INFO [stderr]    --> src/main.rs:101:17
Dec 05 00:47:08.143 INFO [stderr]     |
Dec 05 00:47:08.143 INFO [stderr] 101 |                 io::stdout().flush();
Dec 05 00:47:08.143 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:08.143 INFO [stderr]     |
Dec 05 00:47:08.143 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:08.143 INFO [stderr] 
Dec 05 00:47:08.143 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:47:08.143 INFO [stderr]    --> src/main.rs:102:17
Dec 05 00:47:08.143 INFO [stderr]     |
Dec 05 00:47:08.143 INFO [stderr] 102 |                 io::stdin().read_line(&mut new_reward);
Dec 05 00:47:08.143 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:47:08.143 INFO [stderr]     |
Dec 05 00:47:08.143 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:47:08.143 INFO [stderr] 
Dec 05 00:47:08.544 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
Dec 05 00:47:08.548 INFO [stderr] su: No module specific data is present
Dec 05 00:47:09.600 INFO running `"docker" "inspect" "fd53b281e3818f0dc46429b25e2837eee0ed0476c0dae06cb3c2ad6b92d13ea8"`
Dec 05 00:47:09.820 INFO running `"docker" "rm" "-f" "fd53b281e3818f0dc46429b25e2837eee0ed0476c0dae06cb3c2ad6b92d13ea8"`
Dec 05 00:47:10.136 INFO [stdout] fd53b281e3818f0dc46429b25e2837eee0ed0476c0dae06cb3c2ad6b92d13ea8
Dec 05 00:47:10.138 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 05 00:47:10.556 INFO [stdout] ab9bd372bcd33fccc721efe40d9956a7ba714cb2a80ea0ab943630a692546cc7
Dec 05 00:47:10.558 INFO running `"docker" "start" "-a" "ab9bd372bcd33fccc721efe40d9956a7ba714cb2a80ea0ab943630a692546cc7"`
Dec 05 00:47:12.271 INFO [stderr] usermod: no changes
Dec 05 00:47:12.369 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
Dec 05 00:47:12.384 INFO [stderr]      Running /target/debug/deps/blockchain_rs-8764f868c2336691
Dec 05 00:47:12.388 INFO [stdout] 
Dec 05 00:47:12.388 INFO [stdout] running 0 tests
Dec 05 00:47:12.388 INFO [stdout] 
Dec 05 00:47:12.388 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 00:47:12.388 INFO [stdout] 
Dec 05 00:47:12.391 INFO [stderr] su: No module specific data is present
Dec 05 00:47:13.074 INFO running `"docker" "inspect" "ab9bd372bcd33fccc721efe40d9956a7ba714cb2a80ea0ab943630a692546cc7"`
Dec 05 00:47:13.404 INFO running `"docker" "rm" "-f" "ab9bd372bcd33fccc721efe40d9956a7ba714cb2a80ea0ab943630a692546cc7"`
Dec 05 00:47:13.744 INFO [stdout] ab9bd372bcd33fccc721efe40d9956a7ba714cb2a80ea0ab943630a692546cc7