Dec 12 20:15:07.232 INFO testing yogesum/blockchain-rs against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 12 20:15:07.232 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 20:15:07.691 INFO [stdout] d0c6128c6da70c93b8a9ac33fefc5fcd256ca760d620efd1cfe470cca86e3dcb
Dec 12 20:15:07.693 INFO running `"docker" "start" "-a" "d0c6128c6da70c93b8a9ac33fefc5fcd256ca760d620efd1cfe470cca86e3dcb"`
Dec 12 20:15:10.286 INFO [stderr] usermod: no changes
Dec 12 20:15:10.457 INFO [stderr]    Compiling typenum v1.10.0
Dec 12 20:15:10.458 INFO [stderr]    Compiling byte-tools v0.2.0
Dec 12 20:15:10.458 INFO [stderr]    Compiling arrayref v0.3.4
Dec 12 20:15:10.458 INFO [stderr]    Compiling serde v1.0.37
Dec 12 20:15:10.458 INFO [stderr]    Compiling fake-simd v0.1.2
Dec 12 20:15:10.466 INFO [stderr]    Compiling proc-macro2 v0.3.1
Dec 12 20:15:11.484 INFO [stderr]    Compiling block-buffer v0.3.3
Dec 12 20:15:16.539 INFO [stderr]    Compiling quote v0.5.1
Dec 12 20:15:17.885 INFO [stderr]    Compiling syn v0.13.1
Dec 12 20:15:19.823 INFO [stderr]    Compiling generic-array v0.9.0
Dec 12 20:15:21.576 INFO [stderr]    Compiling digest v0.7.2
Dec 12 20:15:22.092 INFO [stderr]    Compiling sha2 v0.7.0
Dec 12 20:15:33.996 INFO [stderr]    Compiling serde_derive_internals v0.23.0
Dec 12 20:15:39.649 INFO [stderr]    Compiling serde_derive v1.0.37
Dec 12 20:15:44.319 INFO [stderr]    Compiling serde_json v1.0.13
Dec 12 20:15:56.691 INFO [stderr]    Compiling blockchain-rs v0.1.0 (/source)
Dec 12 20:15:57.199 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:57.199 INFO [stderr]   --> src/main.rs:16:5
Dec 12 20:15:57.200 INFO [stderr]    |
Dec 12 20:15:57.200 INFO [stderr] 16 |     io::stdout().flush();
Dec 12 20:15:57.200 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:57.200 INFO [stderr]    |
Dec 12 20:15:57.200 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 20:15:57.201 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:57.201 INFO [stderr] 
Dec 12 20:15:57.201 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:57.201 INFO [stderr]   --> src/main.rs:17:5
Dec 12 20:15:57.202 INFO [stderr]    |
Dec 12 20:15:57.202 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_addr);
Dec 12 20:15:57.202 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:57.202 INFO [stderr]    |
Dec 12 20:15:57.203 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:57.203 INFO [stderr] 
Dec 12 20:15:57.203 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:57.203 INFO [stderr]   --> src/main.rs:20:5
Dec 12 20:15:57.204 INFO [stderr]    |
Dec 12 20:15:57.204 INFO [stderr] 20 |     io::stdout().flush();
Dec 12 20:15:57.204 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:57.205 INFO [stderr]    |
Dec 12 20:15:57.205 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:57.205 INFO [stderr] 
Dec 12 20:15:57.205 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:57.206 INFO [stderr]   --> src/main.rs:21:5
Dec 12 20:15:57.206 INFO [stderr]    |
Dec 12 20:15:57.206 INFO [stderr] 21 |     io::stdin().read_line(&mut difficulty);
Dec 12 20:15:57.206 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:57.207 INFO [stderr]    |
Dec 12 20:15:57.207 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:57.207 INFO [stderr] 
Dec 12 20:15:57.208 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:57.208 INFO [stderr]   --> src/main.rs:38:9
Dec 12 20:15:57.208 INFO [stderr]    |
Dec 12 20:15:57.209 INFO [stderr] 38 |         io::stdout().flush();
Dec 12 20:15:57.209 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:57.209 INFO [stderr]    |
Dec 12 20:15:57.209 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:57.210 INFO [stderr] 
Dec 12 20:15:57.210 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:57.210 INFO [stderr]   --> src/main.rs:41:9
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr] 41 |         io::stdin().read_line(&mut choice);
Dec 12 20:15:57.210 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:57.210 INFO [stderr] 
Dec 12 20:15:57.210 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:57.210 INFO [stderr]   --> src/main.rs:55:17
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr] 55 |                 io::stdout().flush();
Dec 12 20:15:57.210 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:57.210 INFO [stderr] 
Dec 12 20:15:57.210 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:57.210 INFO [stderr]   --> src/main.rs:56:17
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr] 56 |                 io::stdin().read_line(&mut sender);
Dec 12 20:15:57.210 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:57.210 INFO [stderr] 
Dec 12 20:15:57.210 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:57.210 INFO [stderr]   --> src/main.rs:59:17
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr] 59 |                 io::stdout().flush();
Dec 12 20:15:57.210 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:57.210 INFO [stderr] 
Dec 12 20:15:57.210 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:57.210 INFO [stderr]   --> src/main.rs:60:17
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr] 60 |                 io::stdin().read_line(&mut receiver);
Dec 12 20:15:57.210 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:57.210 INFO [stderr] 
Dec 12 20:15:57.210 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:57.210 INFO [stderr]   --> src/main.rs:63:17
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr] 63 |                 io::stdout().flush();
Dec 12 20:15:57.210 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:57.210 INFO [stderr] 
Dec 12 20:15:57.210 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:57.210 INFO [stderr]   --> src/main.rs:64:17
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr] 64 |                 io::stdin().read_line(&mut amount);
Dec 12 20:15:57.210 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:57.210 INFO [stderr] 
Dec 12 20:15:57.210 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:57.210 INFO [stderr]   --> src/main.rs:89:17
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr] 89 |                 io::stdout().flush();
Dec 12 20:15:57.210 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:57.210 INFO [stderr] 
Dec 12 20:15:57.210 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:57.210 INFO [stderr]   --> src/main.rs:90:17
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr] 90 |                 io::stdin().read_line(&mut new_diff);
Dec 12 20:15:57.210 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:57.210 INFO [stderr]    |
Dec 12 20:15:57.210 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:57.210 INFO [stderr] 
Dec 12 20:15:57.210 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:57.210 INFO [stderr]    --> src/main.rs:101:17
Dec 12 20:15:57.210 INFO [stderr]     |
Dec 12 20:15:57.210 INFO [stderr] 101 |                 io::stdout().flush();
Dec 12 20:15:57.210 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:57.210 INFO [stderr]     |
Dec 12 20:15:57.210 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:57.210 INFO [stderr] 
Dec 12 20:15:57.211 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:15:57.211 INFO [stderr]    --> src/main.rs:102:17
Dec 12 20:15:57.211 INFO [stderr]     |
Dec 12 20:15:57.211 INFO [stderr] 102 |                 io::stdin().read_line(&mut new_reward);
Dec 12 20:15:57.211 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:15:57.211 INFO [stderr]     |
Dec 12 20:15:57.211 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:15:57.211 INFO [stderr] 
Dec 12 20:15:58.763 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.43s
Dec 12 20:15:58.766 INFO [stderr] su: No module specific data is present
Dec 12 20:15:59.979 INFO running `"docker" "inspect" "d0c6128c6da70c93b8a9ac33fefc5fcd256ca760d620efd1cfe470cca86e3dcb"`
Dec 12 20:16:00.336 INFO running `"docker" "rm" "-f" "d0c6128c6da70c93b8a9ac33fefc5fcd256ca760d620efd1cfe470cca86e3dcb"`
Dec 12 20:16:00.624 INFO [stdout] d0c6128c6da70c93b8a9ac33fefc5fcd256ca760d620efd1cfe470cca86e3dcb
Dec 12 20:16:00.631 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 20:16:01.108 INFO [stdout] 566c3f22675d060562574007970f1bb95a6b6b0bd31c75a5fc459b0635763c33
Dec 12 20:16:01.110 INFO running `"docker" "start" "-a" "566c3f22675d060562574007970f1bb95a6b6b0bd31c75a5fc459b0635763c33"`
Dec 12 20:16:03.387 INFO [stderr] usermod: no changes
Dec 12 20:16:03.575 INFO [stderr]    Compiling blockchain-rs v0.1.0 (/source)
Dec 12 20:16:04.148 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:04.148 INFO [stderr]   --> src/main.rs:16:5
Dec 12 20:16:04.148 INFO [stderr]    |
Dec 12 20:16:04.148 INFO [stderr] 16 |     io::stdout().flush();
Dec 12 20:16:04.148 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:04.148 INFO [stderr]    |
Dec 12 20:16:04.148 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 20:16:04.148 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:04.148 INFO [stderr] 
Dec 12 20:16:04.148 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:04.148 INFO [stderr]   --> src/main.rs:17:5
Dec 12 20:16:04.148 INFO [stderr]    |
Dec 12 20:16:04.148 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_addr);
Dec 12 20:16:04.148 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:04.148 INFO [stderr]    |
Dec 12 20:16:04.148 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:04.148 INFO [stderr] 
Dec 12 20:16:04.148 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:04.148 INFO [stderr]   --> src/main.rs:20:5
Dec 12 20:16:04.148 INFO [stderr]    |
Dec 12 20:16:04.148 INFO [stderr] 20 |     io::stdout().flush();
Dec 12 20:16:04.148 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:04.148 INFO [stderr]    |
Dec 12 20:16:04.148 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:04.148 INFO [stderr] 
Dec 12 20:16:04.148 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:04.148 INFO [stderr]   --> src/main.rs:21:5
Dec 12 20:16:04.148 INFO [stderr]    |
Dec 12 20:16:04.148 INFO [stderr] 21 |     io::stdin().read_line(&mut difficulty);
Dec 12 20:16:04.148 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:04.148 INFO [stderr]    |
Dec 12 20:16:04.148 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:04.148 INFO [stderr] 
Dec 12 20:16:04.148 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:04.148 INFO [stderr]   --> src/main.rs:38:9
Dec 12 20:16:04.148 INFO [stderr]    |
Dec 12 20:16:04.148 INFO [stderr] 38 |         io::stdout().flush();
Dec 12 20:16:04.148 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:04.148 INFO [stderr]    |
Dec 12 20:16:04.148 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:04.148 INFO [stderr] 
Dec 12 20:16:04.148 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:04.148 INFO [stderr]   --> src/main.rs:41:9
Dec 12 20:16:04.148 INFO [stderr]    |
Dec 12 20:16:04.148 INFO [stderr] 41 |         io::stdin().read_line(&mut choice);
Dec 12 20:16:04.148 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:04.148 INFO [stderr]    |
Dec 12 20:16:04.148 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:04.148 INFO [stderr] 
Dec 12 20:16:04.148 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:04.148 INFO [stderr]   --> src/main.rs:55:17
Dec 12 20:16:04.148 INFO [stderr]    |
Dec 12 20:16:04.148 INFO [stderr] 55 |                 io::stdout().flush();
Dec 12 20:16:04.148 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:04.148 INFO [stderr]    |
Dec 12 20:16:04.148 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:04.148 INFO [stderr] 
Dec 12 20:16:04.148 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:04.148 INFO [stderr]   --> src/main.rs:56:17
Dec 12 20:16:04.148 INFO [stderr]    |
Dec 12 20:16:04.149 INFO [stderr] 56 |                 io::stdin().read_line(&mut sender);
Dec 12 20:16:04.149 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:04.149 INFO [stderr]    |
Dec 12 20:16:04.149 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:04.149 INFO [stderr] 
Dec 12 20:16:04.149 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:04.149 INFO [stderr]   --> src/main.rs:59:17
Dec 12 20:16:04.149 INFO [stderr]    |
Dec 12 20:16:04.149 INFO [stderr] 59 |                 io::stdout().flush();
Dec 12 20:16:04.149 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:04.149 INFO [stderr]    |
Dec 12 20:16:04.149 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:04.149 INFO [stderr] 
Dec 12 20:16:04.149 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:04.149 INFO [stderr]   --> src/main.rs:60:17
Dec 12 20:16:04.149 INFO [stderr]    |
Dec 12 20:16:04.149 INFO [stderr] 60 |                 io::stdin().read_line(&mut receiver);
Dec 12 20:16:04.149 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:04.149 INFO [stderr]    |
Dec 12 20:16:04.149 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:04.149 INFO [stderr] 
Dec 12 20:16:04.149 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:04.149 INFO [stderr]   --> src/main.rs:63:17
Dec 12 20:16:04.149 INFO [stderr]    |
Dec 12 20:16:04.149 INFO [stderr] 63 |                 io::stdout().flush();
Dec 12 20:16:04.149 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:04.149 INFO [stderr]    |
Dec 12 20:16:04.149 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:04.149 INFO [stderr] 
Dec 12 20:16:04.149 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:04.149 INFO [stderr]   --> src/main.rs:64:17
Dec 12 20:16:04.149 INFO [stderr]    |
Dec 12 20:16:04.149 INFO [stderr] 64 |                 io::stdin().read_line(&mut amount);
Dec 12 20:16:04.149 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:04.149 INFO [stderr]    |
Dec 12 20:16:04.149 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:04.149 INFO [stderr] 
Dec 12 20:16:04.149 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:04.149 INFO [stderr]   --> src/main.rs:89:17
Dec 12 20:16:04.149 INFO [stderr]    |
Dec 12 20:16:04.149 INFO [stderr] 89 |                 io::stdout().flush();
Dec 12 20:16:04.149 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:04.149 INFO [stderr]    |
Dec 12 20:16:04.149 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:04.149 INFO [stderr] 
Dec 12 20:16:04.149 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:04.149 INFO [stderr]   --> src/main.rs:90:17
Dec 12 20:16:04.149 INFO [stderr]    |
Dec 12 20:16:04.149 INFO [stderr] 90 |                 io::stdin().read_line(&mut new_diff);
Dec 12 20:16:04.149 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:04.149 INFO [stderr]    |
Dec 12 20:16:04.149 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:04.149 INFO [stderr] 
Dec 12 20:16:04.149 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:04.149 INFO [stderr]    --> src/main.rs:101:17
Dec 12 20:16:04.149 INFO [stderr]     |
Dec 12 20:16:04.149 INFO [stderr] 101 |                 io::stdout().flush();
Dec 12 20:16:04.149 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:04.149 INFO [stderr]     |
Dec 12 20:16:04.149 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:04.149 INFO [stderr] 
Dec 12 20:16:04.149 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 20:16:04.149 INFO [stderr]    --> src/main.rs:102:17
Dec 12 20:16:04.149 INFO [stderr]     |
Dec 12 20:16:04.149 INFO [stderr] 102 |                 io::stdin().read_line(&mut new_reward);
Dec 12 20:16:04.149 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:16:04.149 INFO [stderr]     |
Dec 12 20:16:04.149 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 20:16:04.149 INFO [stderr] 
Dec 12 20:16:04.589 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
Dec 12 20:16:04.594 INFO [stderr] su: No module specific data is present
Dec 12 20:16:05.839 INFO running `"docker" "inspect" "566c3f22675d060562574007970f1bb95a6b6b0bd31c75a5fc459b0635763c33"`
Dec 12 20:16:06.111 INFO running `"docker" "rm" "-f" "566c3f22675d060562574007970f1bb95a6b6b0bd31c75a5fc459b0635763c33"`
Dec 12 20:16:06.387 INFO [stdout] 566c3f22675d060562574007970f1bb95a6b6b0bd31c75a5fc459b0635763c33
Dec 12 20:16:06.391 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 20:16:06.995 INFO [stdout] 3c803d0460602a024eb77026199b6dcca89f53bf5841634ab44e4ccf96003982
Dec 12 20:16:06.997 INFO running `"docker" "start" "-a" "3c803d0460602a024eb77026199b6dcca89f53bf5841634ab44e4ccf96003982"`
Dec 12 20:16:08.603 INFO [stderr] usermod: no changes
Dec 12 20:16:08.760 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
Dec 12 20:16:08.763 INFO [stderr]      Running /target/debug/deps/blockchain_rs-c46768a635b28e0f
Dec 12 20:16:08.767 INFO [stdout] 
Dec 12 20:16:08.767 INFO [stdout] running 0 tests
Dec 12 20:16:08.767 INFO [stdout] 
Dec 12 20:16:08.767 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 12 20:16:08.767 INFO [stdout] 
Dec 12 20:16:08.770 INFO [stderr] su: No module specific data is present
Dec 12 20:16:09.636 INFO running `"docker" "inspect" "3c803d0460602a024eb77026199b6dcca89f53bf5841634ab44e4ccf96003982"`
Dec 12 20:16:10.155 INFO running `"docker" "rm" "-f" "3c803d0460602a024eb77026199b6dcca89f53bf5841634ab44e4ccf96003982"`
Dec 12 20:16:10.598 INFO [stdout] 3c803d0460602a024eb77026199b6dcca89f53bf5841634ab44e4ccf96003982