Dec 12 20:15:05.940 INFO testing yogesum/blockchain-rs against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 12 20:15:05.940 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 20:15:06.486 INFO [stdout] 823b3587d555fce45e44fbd8ecc17b8fb6ba9a928c9eae5889d000ad2262db5f
Dec 12 20:15:06.488 INFO running `"docker" "start" "-a" "823b3587d555fce45e44fbd8ecc17b8fb6ba9a928c9eae5889d000ad2262db5f"`
Dec 12 20:15:07.938 INFO [stderr] usermod: no changes
Dec 12 20:15:08.083 INFO [stderr]    Compiling typenum v1.10.0
Dec 12 20:15:08.083 INFO [stderr]    Compiling arrayref v0.3.4
Dec 12 20:15:08.083 INFO [stderr]    Compiling byte-tools v0.2.0
Dec 12 20:15:08.094 INFO [stderr]    Compiling serde v1.0.37
Dec 12 20:15:08.094 INFO [stderr]    Compiling fake-simd v0.1.2
Dec 12 20:15:08.094 INFO [stderr]    Compiling proc-macro2 v0.3.1
Dec 12 20:15:08.799 INFO [stderr]    Compiling block-buffer v0.3.3
Dec 12 20:15:13.615 INFO [stderr]    Compiling quote v0.5.1
Dec 12 20:15:14.995 INFO [stderr]    Compiling syn v0.13.1
Dec 12 20:15:17.431 INFO [stderr]    Compiling generic-array v0.9.0
Dec 12 20:15:18.889 INFO [stderr]    Compiling digest v0.7.2
Dec 12 20:15:19.398 INFO [stderr]    Compiling sha2 v0.7.0
Dec 12 20:15:31.082 INFO [stderr]    Compiling serde_derive_internals v0.23.0
Dec 12 20:15:36.621 INFO [stderr]    Compiling serde_derive v1.0.37
Dec 12 20:15:40.244 INFO [stderr]    Compiling serde_json v1.0.13
Dec 12 20:15:53.085 INFO [stderr]    Compiling blockchain-rs v0.1.0 (/source)
Dec 12 20:15:53.591 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:53.591 INFO [stderr]   --> src/main.rs:16:5
Dec 12 20:15:53.592 INFO [stderr]    |
Dec 12 20:15:53.592 INFO [stderr] 16 |     io::stdout().flush();
Dec 12 20:15:53.592 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:53.593 INFO [stderr]    |
Dec 12 20:15:53.593 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 20:15:53.593 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:53.594 INFO [stderr] 
Dec 12 20:15:53.594 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:53.594 INFO [stderr]   --> src/main.rs:17:5
Dec 12 20:15:53.594 INFO [stderr]    |
Dec 12 20:15:53.594 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_addr);
Dec 12 20:15:53.594 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:53.594 INFO [stderr]    |
Dec 12 20:15:53.594 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:53.594 INFO [stderr] 
Dec 12 20:15:53.594 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:53.595 INFO [stderr]   --> src/main.rs:20:5
Dec 12 20:15:53.595 INFO [stderr]    |
Dec 12 20:15:53.595 INFO [stderr] 20 |     io::stdout().flush();
Dec 12 20:15:53.595 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:53.595 INFO [stderr]    |
Dec 12 20:15:53.595 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:53.595 INFO [stderr] 
Dec 12 20:15:53.595 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:53.595 INFO [stderr]   --> src/main.rs:21:5
Dec 12 20:15:53.595 INFO [stderr]    |
Dec 12 20:15:53.595 INFO [stderr] 21 |     io::stdin().read_line(&mut difficulty);
Dec 12 20:15:53.595 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:53.595 INFO [stderr]    |
Dec 12 20:15:53.595 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:53.595 INFO [stderr] 
Dec 12 20:15:53.595 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:53.595 INFO [stderr]   --> src/main.rs:38:9
Dec 12 20:15:53.595 INFO [stderr]    |
Dec 12 20:15:53.595 INFO [stderr] 38 |         io::stdout().flush();
Dec 12 20:15:53.595 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:53.595 INFO [stderr]    |
Dec 12 20:15:53.595 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:53.595 INFO [stderr] 
Dec 12 20:15:53.595 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:53.595 INFO [stderr]   --> src/main.rs:41:9
Dec 12 20:15:53.595 INFO [stderr]    |
Dec 12 20:15:53.595 INFO [stderr] 41 |         io::stdin().read_line(&mut choice);
Dec 12 20:15:53.595 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:53.595 INFO [stderr]    |
Dec 12 20:15:53.595 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:53.595 INFO [stderr] 
Dec 12 20:15:53.595 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:53.595 INFO [stderr]   --> src/main.rs:55:17
Dec 12 20:15:53.595 INFO [stderr]    |
Dec 12 20:15:53.595 INFO [stderr] 55 |                 io::stdout().flush();
Dec 12 20:15:53.595 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:53.595 INFO [stderr]    |
Dec 12 20:15:53.595 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:53.595 INFO [stderr] 
Dec 12 20:15:53.595 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:53.595 INFO [stderr]   --> src/main.rs:56:17
Dec 12 20:15:53.595 INFO [stderr]    |
Dec 12 20:15:53.595 INFO [stderr] 56 |                 io::stdin().read_line(&mut sender);
Dec 12 20:15:53.595 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:53.595 INFO [stderr]    |
Dec 12 20:15:53.595 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:53.595 INFO [stderr] 
Dec 12 20:15:53.595 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:53.595 INFO [stderr]   --> src/main.rs:59:17
Dec 12 20:15:53.595 INFO [stderr]    |
Dec 12 20:15:53.595 INFO [stderr] 59 |                 io::stdout().flush();
Dec 12 20:15:53.595 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:53.595 INFO [stderr]    |
Dec 12 20:15:53.595 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:53.596 INFO [stderr] 
Dec 12 20:15:53.596 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:53.596 INFO [stderr]   --> src/main.rs:60:17
Dec 12 20:15:53.596 INFO [stderr]    |
Dec 12 20:15:53.596 INFO [stderr] 60 |                 io::stdin().read_line(&mut receiver);
Dec 12 20:15:53.596 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:53.596 INFO [stderr]    |
Dec 12 20:15:53.596 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:53.596 INFO [stderr] 
Dec 12 20:15:53.596 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:53.596 INFO [stderr]   --> src/main.rs:63:17
Dec 12 20:15:53.596 INFO [stderr]    |
Dec 12 20:15:53.596 INFO [stderr] 63 |                 io::stdout().flush();
Dec 12 20:15:53.596 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:53.596 INFO [stderr]    |
Dec 12 20:15:53.596 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:53.596 INFO [stderr] 
Dec 12 20:15:53.596 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:53.596 INFO [stderr]   --> src/main.rs:64:17
Dec 12 20:15:53.596 INFO [stderr]    |
Dec 12 20:15:53.596 INFO [stderr] 64 |                 io::stdin().read_line(&mut amount);
Dec 12 20:15:53.596 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:53.596 INFO [stderr]    |
Dec 12 20:15:53.596 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:53.596 INFO [stderr] 
Dec 12 20:15:53.596 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:53.596 INFO [stderr]   --> src/main.rs:89:17
Dec 12 20:15:53.596 INFO [stderr]    |
Dec 12 20:15:53.596 INFO [stderr] 89 |                 io::stdout().flush();
Dec 12 20:15:53.596 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:53.596 INFO [stderr]    |
Dec 12 20:15:53.596 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:53.597 INFO [stderr] 
Dec 12 20:15:53.597 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:53.597 INFO [stderr]   --> src/main.rs:90:17
Dec 12 20:15:53.597 INFO [stderr]    |
Dec 12 20:15:53.597 INFO [stderr] 90 |                 io::stdin().read_line(&mut new_diff);
Dec 12 20:15:53.597 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:53.597 INFO [stderr]    |
Dec 12 20:15:53.597 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:53.597 INFO [stderr] 
Dec 12 20:15:53.597 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:53.597 INFO [stderr]    --> src/main.rs:101:17
Dec 12 20:15:53.597 INFO [stderr]     |
Dec 12 20:15:53.597 INFO [stderr] 101 |                 io::stdout().flush();
Dec 12 20:15:53.597 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:53.597 INFO [stderr]     |
Dec 12 20:15:53.597 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:53.597 INFO [stderr] 
Dec 12 20:15:53.597 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:53.597 INFO [stderr]    --> src/main.rs:102:17
Dec 12 20:15:53.597 INFO [stderr]     |
Dec 12 20:15:53.597 INFO [stderr] 102 |                 io::stdin().read_line(&mut new_reward);
Dec 12 20:15:53.597 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:53.597 INFO [stderr]     |
Dec 12 20:15:53.597 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:53.597 INFO [stderr] 
Dec 12 20:15:55.115 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.16s
Dec 12 20:15:55.121 INFO [stderr] su: No module specific data is present
Dec 12 20:15:58.066 INFO running `"docker" "inspect" "823b3587d555fce45e44fbd8ecc17b8fb6ba9a928c9eae5889d000ad2262db5f"`
Dec 12 20:15:58.461 INFO running `"docker" "rm" "-f" "823b3587d555fce45e44fbd8ecc17b8fb6ba9a928c9eae5889d000ad2262db5f"`
Dec 12 20:15:58.867 INFO [stdout] 823b3587d555fce45e44fbd8ecc17b8fb6ba9a928c9eae5889d000ad2262db5f
Dec 12 20:15:58.875 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 20:15:59.403 INFO [stdout] f14e2f0a9e2d10394f416c20b0056b38ddbaeb5412d4392ce4cbe7c79a8799c7
Dec 12 20:15:59.405 INFO running `"docker" "start" "-a" "f14e2f0a9e2d10394f416c20b0056b38ddbaeb5412d4392ce4cbe7c79a8799c7"`
Dec 12 20:16:01.591 INFO [stderr] usermod: no changes
Dec 12 20:16:01.795 INFO [stderr]    Compiling blockchain-rs v0.1.0 (/source)
Dec 12 20:16:02.357 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:02.357 INFO [stderr]   --> src/main.rs:16:5
Dec 12 20:16:02.357 INFO [stderr]    |
Dec 12 20:16:02.357 INFO [stderr] 16 |     io::stdout().flush();
Dec 12 20:16:02.357 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:02.357 INFO [stderr]    |
Dec 12 20:16:02.357 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 20:16:02.357 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:02.357 INFO [stderr] 
Dec 12 20:16:02.357 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:02.358 INFO [stderr]   --> src/main.rs:17:5
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_addr);
Dec 12 20:16:02.358 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:02.358 INFO [stderr] 
Dec 12 20:16:02.358 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:02.358 INFO [stderr]   --> src/main.rs:20:5
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr] 20 |     io::stdout().flush();
Dec 12 20:16:02.358 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:02.358 INFO [stderr] 
Dec 12 20:16:02.358 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:02.358 INFO [stderr]   --> src/main.rs:21:5
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr] 21 |     io::stdin().read_line(&mut difficulty);
Dec 12 20:16:02.358 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:02.358 INFO [stderr] 
Dec 12 20:16:02.358 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:02.358 INFO [stderr]   --> src/main.rs:38:9
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr] 38 |         io::stdout().flush();
Dec 12 20:16:02.358 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:02.358 INFO [stderr] 
Dec 12 20:16:02.358 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:02.358 INFO [stderr]   --> src/main.rs:41:9
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr] 41 |         io::stdin().read_line(&mut choice);
Dec 12 20:16:02.358 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:02.358 INFO [stderr] 
Dec 12 20:16:02.358 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:02.358 INFO [stderr]   --> src/main.rs:55:17
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr] 55 |                 io::stdout().flush();
Dec 12 20:16:02.358 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:02.358 INFO [stderr] 
Dec 12 20:16:02.358 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:02.358 INFO [stderr]   --> src/main.rs:56:17
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr] 56 |                 io::stdin().read_line(&mut sender);
Dec 12 20:16:02.358 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:02.358 INFO [stderr] 
Dec 12 20:16:02.358 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:02.358 INFO [stderr]   --> src/main.rs:59:17
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr] 59 |                 io::stdout().flush();
Dec 12 20:16:02.358 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:02.358 INFO [stderr] 
Dec 12 20:16:02.358 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:02.358 INFO [stderr]   --> src/main.rs:60:17
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr] 60 |                 io::stdin().read_line(&mut receiver);
Dec 12 20:16:02.358 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:02.358 INFO [stderr] 
Dec 12 20:16:02.358 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:02.358 INFO [stderr]   --> src/main.rs:63:17
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr] 63 |                 io::stdout().flush();
Dec 12 20:16:02.358 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:02.358 INFO [stderr] 
Dec 12 20:16:02.358 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:02.358 INFO [stderr]   --> src/main.rs:64:17
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.358 INFO [stderr] 64 |                 io::stdin().read_line(&mut amount);
Dec 12 20:16:02.358 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:02.358 INFO [stderr]    |
Dec 12 20:16:02.359 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:02.359 INFO [stderr] 
Dec 12 20:16:02.359 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:02.359 INFO [stderr]   --> src/main.rs:89:17
Dec 12 20:16:02.359 INFO [stderr]    |
Dec 12 20:16:02.359 INFO [stderr] 89 |                 io::stdout().flush();
Dec 12 20:16:02.359 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:02.359 INFO [stderr]    |
Dec 12 20:16:02.359 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:02.359 INFO [stderr] 
Dec 12 20:16:02.359 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:02.359 INFO [stderr]   --> src/main.rs:90:17
Dec 12 20:16:02.359 INFO [stderr]    |
Dec 12 20:16:02.359 INFO [stderr] 90 |                 io::stdin().read_line(&mut new_diff);
Dec 12 20:16:02.359 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:02.359 INFO [stderr]    |
Dec 12 20:16:02.359 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:02.359 INFO [stderr] 
Dec 12 20:16:02.359 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:02.359 INFO [stderr]    --> src/main.rs:101:17
Dec 12 20:16:02.359 INFO [stderr]     |
Dec 12 20:16:02.359 INFO [stderr] 101 |                 io::stdout().flush();
Dec 12 20:16:02.359 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:02.359 INFO [stderr]     |
Dec 12 20:16:02.359 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:02.359 INFO [stderr] 
Dec 12 20:16:02.359 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:02.359 INFO [stderr]    --> src/main.rs:102:17
Dec 12 20:16:02.359 INFO [stderr]     |
Dec 12 20:16:02.359 INFO [stderr] 102 |                 io::stdin().read_line(&mut new_reward);
Dec 12 20:16:02.359 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:02.359 INFO [stderr]     |
Dec 12 20:16:02.359 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:02.359 INFO [stderr] 
Dec 12 20:16:02.783 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
Dec 12 20:16:02.789 INFO [stderr] su: No module specific data is present
Dec 12 20:16:03.967 INFO running `"docker" "inspect" "f14e2f0a9e2d10394f416c20b0056b38ddbaeb5412d4392ce4cbe7c79a8799c7"`
Dec 12 20:16:04.335 INFO running `"docker" "rm" "-f" "f14e2f0a9e2d10394f416c20b0056b38ddbaeb5412d4392ce4cbe7c79a8799c7"`
Dec 12 20:16:04.703 INFO [stdout] f14e2f0a9e2d10394f416c20b0056b38ddbaeb5412d4392ce4cbe7c79a8799c7
Dec 12 20:16:04.709 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 20:16:05.220 INFO [stdout] 7b510ec3205ca813a2b1da21c74f21a4bec43eb47d78bc10eef587ae8521694f
Dec 12 20:16:05.223 INFO running `"docker" "start" "-a" "7b510ec3205ca813a2b1da21c74f21a4bec43eb47d78bc10eef587ae8521694f"`
Dec 12 20:16:07.446 INFO [stderr] usermod: no changes
Dec 12 20:16:07.555 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
Dec 12 20:16:07.573 INFO [stderr]      Running /target/debug/deps/blockchain_rs-9fec6fa180437d24
Dec 12 20:16:07.575 INFO [stdout] 
Dec 12 20:16:07.576 INFO [stdout] running 0 tests
Dec 12 20:16:07.576 INFO [stdout] 
Dec 12 20:16:07.576 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 12 20:16:07.576 INFO [stdout] 
Dec 12 20:16:07.581 INFO [stderr] su: No module specific data is present
Dec 12 20:16:08.499 INFO running `"docker" "inspect" "7b510ec3205ca813a2b1da21c74f21a4bec43eb47d78bc10eef587ae8521694f"`
Dec 12 20:16:08.893 INFO running `"docker" "rm" "-f" "7b510ec3205ca813a2b1da21c74f21a4bec43eb47d78bc10eef587ae8521694f"`
Dec 12 20:16:09.217 INFO [stdout] 7b510ec3205ca813a2b1da21c74f21a4bec43eb47d78bc10eef587ae8521694f