Dec 01 11:25:55.690 INFO testing lempiy/blockchain against 1.30.1 for beta-1.31-5
Dec 01 11:25:55.691 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/beta-1.31-5/1.30.1:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1.30.1 build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 11:25:56.151 INFO [stdout] 442a3da0661eb72bfa1e9639bed25eeaadf4a5e6d1d8c97c2e7985e6b215897b
Dec 01 11:25:56.156 INFO running `"docker" "start" "-a" "442a3da0661eb72bfa1e9639bed25eeaadf4a5e6d1d8c97c2e7985e6b215897b"`
Dec 01 11:25:57.411 INFO [stderr] usermod: no changes
Dec 01 11:25:57.555 INFO [stderr]    Compiling serde_json v1.0.14
Dec 01 11:25:57.563 INFO [stderr]    Compiling sha2 v0.7.0
Dec 01 11:25:57.563 INFO [stderr]    Compiling serde_derive v1.0.38
Dec 01 11:26:12.420 INFO [stderr]    Compiling blockchain v0.1.0 (/source)
Dec 01 11:26:13.435 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:13.435 INFO [stderr]   --> src/main.rs:16:5
Dec 01 11:26:13.435 INFO [stderr]    |
Dec 01 11:26:13.435 INFO [stderr] 16 |     io::stdout().flush();
Dec 01 11:26:13.435 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:13.435 INFO [stderr]    |
Dec 01 11:26:13.435 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 01 11:26:13.435 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:13.435 INFO [stderr] 
Dec 01 11:26:13.435 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:13.435 INFO [stderr]   --> src/main.rs:17:5
Dec 01 11:26:13.435 INFO [stderr]    |
Dec 01 11:26:13.435 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_addr);
Dec 01 11:26:13.435 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:13.435 INFO [stderr]    |
Dec 01 11:26:13.435 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:13.435 INFO [stderr] 
Dec 01 11:26:13.435 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:13.435 INFO [stderr]   --> src/main.rs:20:5
Dec 01 11:26:13.435 INFO [stderr]    |
Dec 01 11:26:13.435 INFO [stderr] 20 |     io::stdout().flush();
Dec 01 11:26:13.435 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:13.435 INFO [stderr]    |
Dec 01 11:26:13.435 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:13.435 INFO [stderr] 
Dec 01 11:26:13.435 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:13.435 INFO [stderr]   --> src/main.rs:21:5
Dec 01 11:26:13.435 INFO [stderr]    |
Dec 01 11:26:13.435 INFO [stderr] 21 |     io::stdin().read_line(&mut difficulty);
Dec 01 11:26:13.436 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:13.436 INFO [stderr] 
Dec 01 11:26:13.436 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:13.436 INFO [stderr]   --> src/main.rs:36:9
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr] 36 |         io::stdout().flush();
Dec 01 11:26:13.436 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:13.436 INFO [stderr] 
Dec 01 11:26:13.436 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:13.436 INFO [stderr]   --> src/main.rs:38:9
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr] 38 |         io::stdin().read_line(&mut choice);
Dec 01 11:26:13.436 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:13.436 INFO [stderr] 
Dec 01 11:26:13.436 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:13.436 INFO [stderr]   --> src/main.rs:54:17
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr] 54 |                 io::stdout().flush();
Dec 01 11:26:13.436 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:13.436 INFO [stderr] 
Dec 01 11:26:13.436 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:13.436 INFO [stderr]   --> src/main.rs:55:17
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr] 55 |                 io::stdin().read_line(&mut sender);
Dec 01 11:26:13.436 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:13.436 INFO [stderr] 
Dec 01 11:26:13.436 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:13.436 INFO [stderr]   --> src/main.rs:58:17
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr] 58 |                 io::stdout().flush();
Dec 01 11:26:13.436 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:13.436 INFO [stderr] 
Dec 01 11:26:13.436 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:13.436 INFO [stderr]   --> src/main.rs:59:17
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr] 59 |                 io::stdin().read_line(&mut reciever);
Dec 01 11:26:13.436 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:13.436 INFO [stderr] 
Dec 01 11:26:13.436 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:13.436 INFO [stderr]   --> src/main.rs:62:17
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr] 62 |                 io::stdout().flush();
Dec 01 11:26:13.436 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:13.436 INFO [stderr] 
Dec 01 11:26:13.436 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:13.436 INFO [stderr]   --> src/main.rs:63:17
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr] 63 |                 io::stdin().read_line(&mut amount);
Dec 01 11:26:13.436 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:13.436 INFO [stderr] 
Dec 01 11:26:13.436 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:13.436 INFO [stderr]   --> src/main.rs:85:17
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr] 85 |                 io::stdout().flush();
Dec 01 11:26:13.436 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:13.436 INFO [stderr] 
Dec 01 11:26:13.436 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:13.436 INFO [stderr]   --> src/main.rs:86:17
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr] 86 |                 io::stdin().read_line(&mut new_diff);
Dec 01 11:26:13.436 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:13.436 INFO [stderr] 
Dec 01 11:26:13.436 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:13.436 INFO [stderr]   --> src/main.rs:96:17
Dec 01 11:26:13.436 INFO [stderr]    |
Dec 01 11:26:13.436 INFO [stderr] 96 |                 io::stdout().flush();
Dec 01 11:26:13.436 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:13.437 INFO [stderr]    |
Dec 01 11:26:13.437 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:13.437 INFO [stderr] 
Dec 01 11:26:13.437 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:13.437 INFO [stderr]   --> src/main.rs:97:17
Dec 01 11:26:13.437 INFO [stderr]    |
Dec 01 11:26:13.437 INFO [stderr] 97 |                 io::stdin().read_line(&mut new_reward);
Dec 01 11:26:13.437 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:13.437 INFO [stderr]    |
Dec 01 11:26:13.437 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:13.437 INFO [stderr] 
Dec 01 11:26:14.807 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.34s
Dec 01 11:26:14.807 INFO [stderr] su: No module specific data is present
Dec 01 11:26:15.581 INFO running `"docker" "inspect" "442a3da0661eb72bfa1e9639bed25eeaadf4a5e6d1d8c97c2e7985e6b215897b"`
Dec 01 11:26:15.845 INFO running `"docker" "rm" "-f" "442a3da0661eb72bfa1e9639bed25eeaadf4a5e6d1d8c97c2e7985e6b215897b"`
Dec 01 11:26:16.195 INFO [stdout] 442a3da0661eb72bfa1e9639bed25eeaadf4a5e6d1d8c97c2e7985e6b215897b
Dec 01 11:26:16.203 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/beta-1.31-5/1.30.1:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1.30.1 test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 11:26:16.779 INFO [stdout] f1c1446ef1a08926f1c09c84f82a28e104c59034ca612d44c8f8db902c1650f3
Dec 01 11:26:16.781 INFO running `"docker" "start" "-a" "f1c1446ef1a08926f1c09c84f82a28e104c59034ca612d44c8f8db902c1650f3"`
Dec 01 11:26:18.166 INFO [stderr] usermod: no changes
Dec 01 11:26:18.383 INFO [stderr]    Compiling blockchain v0.1.0 (/source)
Dec 01 11:26:19.583 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:19.583 INFO [stderr]   --> src/main.rs:16:5
Dec 01 11:26:19.583 INFO [stderr]    |
Dec 01 11:26:19.584 INFO [stderr] 16 |     io::stdout().flush();
Dec 01 11:26:19.584 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:19.584 INFO [stderr]    |
Dec 01 11:26:19.584 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 01 11:26:19.584 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:19.584 INFO [stderr] 
Dec 01 11:26:19.584 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:19.584 INFO [stderr]   --> src/main.rs:17:5
Dec 01 11:26:19.584 INFO [stderr]    |
Dec 01 11:26:19.584 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_addr);
Dec 01 11:26:19.584 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:19.584 INFO [stderr]    |
Dec 01 11:26:19.584 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:19.584 INFO [stderr] 
Dec 01 11:26:19.584 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:19.584 INFO [stderr]   --> src/main.rs:20:5
Dec 01 11:26:19.584 INFO [stderr]    |
Dec 01 11:26:19.584 INFO [stderr] 20 |     io::stdout().flush();
Dec 01 11:26:19.584 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:19.584 INFO [stderr]    |
Dec 01 11:26:19.584 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:19.584 INFO [stderr] 
Dec 01 11:26:19.584 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:19.584 INFO [stderr]   --> src/main.rs:21:5
Dec 01 11:26:19.585 INFO [stderr]    |
Dec 01 11:26:19.585 INFO [stderr] 21 |     io::stdin().read_line(&mut difficulty);
Dec 01 11:26:19.585 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:19.585 INFO [stderr]    |
Dec 01 11:26:19.585 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:19.585 INFO [stderr] 
Dec 01 11:26:19.585 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:19.585 INFO [stderr]   --> src/main.rs:36:9
Dec 01 11:26:19.585 INFO [stderr]    |
Dec 01 11:26:19.585 INFO [stderr] 36 |         io::stdout().flush();
Dec 01 11:26:19.585 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:19.585 INFO [stderr]    |
Dec 01 11:26:19.585 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:19.585 INFO [stderr] 
Dec 01 11:26:19.585 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:19.585 INFO [stderr]   --> src/main.rs:38:9
Dec 01 11:26:19.585 INFO [stderr]    |
Dec 01 11:26:19.585 INFO [stderr] 38 |         io::stdin().read_line(&mut choice);
Dec 01 11:26:19.585 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:19.585 INFO [stderr]    |
Dec 01 11:26:19.585 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:19.585 INFO [stderr] 
Dec 01 11:26:19.585 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:19.585 INFO [stderr]   --> src/main.rs:54:17
Dec 01 11:26:19.585 INFO [stderr]    |
Dec 01 11:26:19.585 INFO [stderr] 54 |                 io::stdout().flush();
Dec 01 11:26:19.585 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:19.585 INFO [stderr]    |
Dec 01 11:26:19.585 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:19.585 INFO [stderr] 
Dec 01 11:26:19.585 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:19.585 INFO [stderr]   --> src/main.rs:55:17
Dec 01 11:26:19.585 INFO [stderr]    |
Dec 01 11:26:19.585 INFO [stderr] 55 |                 io::stdin().read_line(&mut sender);
Dec 01 11:26:19.585 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:19.585 INFO [stderr]    |
Dec 01 11:26:19.585 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:19.585 INFO [stderr] 
Dec 01 11:26:19.585 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:19.585 INFO [stderr]   --> src/main.rs:58:17
Dec 01 11:26:19.585 INFO [stderr]    |
Dec 01 11:26:19.585 INFO [stderr] 58 |                 io::stdout().flush();
Dec 01 11:26:19.585 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:19.585 INFO [stderr]    |
Dec 01 11:26:19.585 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:19.585 INFO [stderr] 
Dec 01 11:26:19.585 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:19.585 INFO [stderr]   --> src/main.rs:59:17
Dec 01 11:26:19.585 INFO [stderr]    |
Dec 01 11:26:19.585 INFO [stderr] 59 |                 io::stdin().read_line(&mut reciever);
Dec 01 11:26:19.585 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:19.585 INFO [stderr]    |
Dec 01 11:26:19.585 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:19.585 INFO [stderr] 
Dec 01 11:26:19.585 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:19.585 INFO [stderr]   --> src/main.rs:62:17
Dec 01 11:26:19.585 INFO [stderr]    |
Dec 01 11:26:19.585 INFO [stderr] 62 |                 io::stdout().flush();
Dec 01 11:26:19.585 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:19.585 INFO [stderr]    |
Dec 01 11:26:19.585 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:19.586 INFO [stderr] 
Dec 01 11:26:19.586 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:19.586 INFO [stderr]   --> src/main.rs:63:17
Dec 01 11:26:19.586 INFO [stderr]    |
Dec 01 11:26:19.586 INFO [stderr] 63 |                 io::stdin().read_line(&mut amount);
Dec 01 11:26:19.586 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:19.586 INFO [stderr]    |
Dec 01 11:26:19.586 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:19.586 INFO [stderr] 
Dec 01 11:26:19.586 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:19.586 INFO [stderr]   --> src/main.rs:85:17
Dec 01 11:26:19.586 INFO [stderr]    |
Dec 01 11:26:19.586 INFO [stderr] 85 |                 io::stdout().flush();
Dec 01 11:26:19.586 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:19.586 INFO [stderr]    |
Dec 01 11:26:19.586 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:19.586 INFO [stderr] 
Dec 01 11:26:19.586 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:19.586 INFO [stderr]   --> src/main.rs:86:17
Dec 01 11:26:19.586 INFO [stderr]    |
Dec 01 11:26:19.586 INFO [stderr] 86 |                 io::stdin().read_line(&mut new_diff);
Dec 01 11:26:19.586 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:19.586 INFO [stderr]    |
Dec 01 11:26:19.586 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:19.586 INFO [stderr] 
Dec 01 11:26:19.586 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:19.586 INFO [stderr]   --> src/main.rs:96:17
Dec 01 11:26:19.586 INFO [stderr]    |
Dec 01 11:26:19.586 INFO [stderr] 96 |                 io::stdout().flush();
Dec 01 11:26:19.586 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:19.586 INFO [stderr]    |
Dec 01 11:26:19.586 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:19.586 INFO [stderr] 
Dec 01 11:26:19.586 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 11:26:19.586 INFO [stderr]   --> src/main.rs:97:17
Dec 01 11:26:19.586 INFO [stderr]    |
Dec 01 11:26:19.586 INFO [stderr] 97 |                 io::stdin().read_line(&mut new_reward);
Dec 01 11:26:19.586 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 11:26:19.586 INFO [stderr]    |
Dec 01 11:26:19.586 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 11:26:19.586 INFO [stderr] 
Dec 01 11:26:20.247 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.04s
Dec 01 11:26:20.250 INFO [stderr] su: No module specific data is present
Dec 01 11:26:21.342 INFO running `"docker" "inspect" "f1c1446ef1a08926f1c09c84f82a28e104c59034ca612d44c8f8db902c1650f3"`
Dec 01 11:26:21.665 INFO running `"docker" "rm" "-f" "f1c1446ef1a08926f1c09c84f82a28e104c59034ca612d44c8f8db902c1650f3"`
Dec 01 11:26:21.909 INFO [stdout] f1c1446ef1a08926f1c09c84f82a28e104c59034ca612d44c8f8db902c1650f3
Dec 01 11:26:21.909 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/beta-1.31-5/1.30.1:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1.30.1 test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 11:26:22.453 INFO [stdout] 068063c4043415c06c55022006074ab6a141103b98417d096016936bd8c93719
Dec 01 11:26:22.455 INFO running `"docker" "start" "-a" "068063c4043415c06c55022006074ab6a141103b98417d096016936bd8c93719"`
Dec 01 11:26:24.867 INFO [stderr] usermod: no changes
Dec 01 11:26:25.031 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.13s
Dec 01 11:26:25.039 INFO [stdout] 
Dec 01 11:26:25.039 INFO [stdout] running 0 tests
Dec 01 11:26:25.039 INFO [stdout] 
Dec 01 11:26:25.039 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 01 11:26:25.039 INFO [stdout] 
Dec 01 11:26:25.039 INFO [stderr]      Running /target/debug/deps/blockchain-60eb2c9ee5f15d05
Dec 01 11:26:25.039 INFO [stderr] su: No module specific data is present
Dec 01 11:26:26.271 INFO running `"docker" "inspect" "068063c4043415c06c55022006074ab6a141103b98417d096016936bd8c93719"`
Dec 01 11:26:26.622 INFO running `"docker" "rm" "-f" "068063c4043415c06c55022006074ab6a141103b98417d096016936bd8c93719"`
Dec 01 11:26:26.883 INFO [stdout] 068063c4043415c06c55022006074ab6a141103b98417d096016936bd8c93719
