Nov 17 06:35:16.074 INFO testing christiansakai/toy_blockchain_rust against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982
Nov 17 06:35:16.074 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-3/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 17 06:35:16.527 INFO [stdout] e6f4b782df3d1c8b4308f47e1a5072dd4ce6bc196e554131d53a8f3fc9899b3a
Nov 17 06:35:16.531 INFO running `"docker" "start" "-a" "e6f4b782df3d1c8b4308f47e1a5072dd4ce6bc196e554131d53a8f3fc9899b3a"`
Nov 17 06:35:17.843 INFO [stderr] usermod: no changes
Nov 17 06:35:17.979 INFO [stderr]    Compiling unicode-xid v0.1.0
Nov 17 06:35:17.980 INFO [stderr]    Compiling ryu v0.2.6
Nov 17 06:35:18.367 INFO [stderr]    Compiling proc-macro2 v0.4.13
Nov 17 06:35:20.023 INFO [stderr]    Compiling serde_json v1.0.26
Nov 17 06:35:23.619 INFO [stderr]    Compiling quote v0.6.8
Nov 17 06:35:27.288 INFO [stderr]    Compiling syn v0.14.9
Nov 17 06:35:38.752 INFO [stderr]    Compiling serde_derive v1.0.75
Nov 17 06:35:54.787 INFO [stderr]    Compiling toy_blockchain v0.1.0 (/source)
Nov 17 06:35:55.963 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:35:55.963 INFO [stderr]   --> src/main.rs:16:5
Nov 17 06:35:55.963 INFO [stderr]    |
Nov 17 06:35:55.963 INFO [stderr] 16 |     io::stdout().flush();
Nov 17 06:35:55.963 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:35:55.963 INFO [stderr]    |
Nov 17 06:35:55.963 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 17 06:35:55.963 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:35:55.963 INFO [stderr] 
Nov 17 06:35:55.963 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:35:55.963 INFO [stderr]   --> src/main.rs:17:5
Nov 17 06:35:55.963 INFO [stderr]    |
Nov 17 06:35:55.963 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_address);
Nov 17 06:35:55.963 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:35:55.963 INFO [stderr]    |
Nov 17 06:35:55.963 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:35:55.963 INFO [stderr] 
Nov 17 06:35:55.963 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:35:55.963 INFO [stderr]   --> src/main.rs:19:5
Nov 17 06:35:55.963 INFO [stderr]    |
Nov 17 06:35:55.963 INFO [stderr] 19 |     io::stdout().flush();
Nov 17 06:35:55.963 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:35:55.964 INFO [stderr] 
Nov 17 06:35:55.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:35:55.964 INFO [stderr]   --> src/main.rs:20:5
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr] 20 |     io::stdin().read_line(&mut difficulty);
Nov 17 06:35:55.964 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:35:55.964 INFO [stderr] 
Nov 17 06:35:55.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:35:55.964 INFO [stderr]   --> src/main.rs:38:9
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr] 38 |         io::stdout().flush();
Nov 17 06:35:55.964 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:35:55.964 INFO [stderr] 
Nov 17 06:35:55.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:35:55.964 INFO [stderr]   --> src/main.rs:41:9
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr] 41 |         io::stdin().read_line(&mut choice);
Nov 17 06:35:55.964 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:35:55.964 INFO [stderr] 
Nov 17 06:35:55.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:35:55.964 INFO [stderr]   --> src/main.rs:57:17
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr] 57 |                 io::stdout().flush();
Nov 17 06:35:55.964 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:35:55.964 INFO [stderr] 
Nov 17 06:35:55.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:35:55.964 INFO [stderr]   --> src/main.rs:58:17
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr] 58 |                 io::stdin().read_line(&mut sender);
Nov 17 06:35:55.964 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:35:55.964 INFO [stderr] 
Nov 17 06:35:55.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:35:55.964 INFO [stderr]   --> src/main.rs:60:17
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr] 60 |                 io::stdout().flush();
Nov 17 06:35:55.964 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:35:55.964 INFO [stderr] 
Nov 17 06:35:55.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:35:55.964 INFO [stderr]   --> src/main.rs:61:17
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr] 61 |                 io::stdin().read_line(&mut receiver);
Nov 17 06:35:55.964 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:35:55.964 INFO [stderr] 
Nov 17 06:35:55.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:35:55.964 INFO [stderr]   --> src/main.rs:63:17
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr] 63 |                 io::stdout().flush();
Nov 17 06:35:55.964 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:35:55.964 INFO [stderr] 
Nov 17 06:35:55.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:35:55.964 INFO [stderr]   --> src/main.rs:64:17
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr] 64 |                 io::stdin().read_line(&mut amount);
Nov 17 06:35:55.964 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:35:55.964 INFO [stderr] 
Nov 17 06:35:55.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:35:55.964 INFO [stderr]   --> src/main.rs:90:17
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr] 90 |                 io::stdout().flush();
Nov 17 06:35:55.964 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:35:55.964 INFO [stderr]    |
Nov 17 06:35:55.964 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:35:55.965 INFO [stderr] 
Nov 17 06:35:55.965 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:35:55.965 INFO [stderr]   --> src/main.rs:91:17
Nov 17 06:35:55.965 INFO [stderr]    |
Nov 17 06:35:55.965 INFO [stderr] 91 |                 io::stdin().read_line(&mut new_difficulty);
Nov 17 06:35:55.965 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:35:55.965 INFO [stderr]    |
Nov 17 06:35:55.965 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:35:55.965 INFO [stderr] 
Nov 17 06:35:55.965 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:35:55.965 INFO [stderr]    --> src/main.rs:105:17
Nov 17 06:35:55.965 INFO [stderr]     |
Nov 17 06:35:55.965 INFO [stderr] 105 |                 io::stdout().flush();
Nov 17 06:35:55.965 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:35:55.965 INFO [stderr]     |
Nov 17 06:35:55.965 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:35:55.965 INFO [stderr] 
Nov 17 06:35:55.965 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:35:55.965 INFO [stderr]    --> src/main.rs:106:17
Nov 17 06:35:55.965 INFO [stderr]     |
Nov 17 06:35:55.965 INFO [stderr] 106 |                 io::stdin().read_line(&mut new_reward);
Nov 17 06:35:55.965 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:35:55.965 INFO [stderr]     |
Nov 17 06:35:55.965 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:35:55.965 INFO [stderr] 
Nov 17 06:35:57.367 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.49s
Nov 17 06:35:57.373 INFO [stderr] su: No module specific data is present
Nov 17 06:35:58.716 INFO running `"docker" "inspect" "e6f4b782df3d1c8b4308f47e1a5072dd4ce6bc196e554131d53a8f3fc9899b3a"`
Nov 17 06:35:59.073 INFO running `"docker" "rm" "-f" "e6f4b782df3d1c8b4308f47e1a5072dd4ce6bc196e554131d53a8f3fc9899b3a"`
Nov 17 06:35:59.439 INFO [stdout] e6f4b782df3d1c8b4308f47e1a5072dd4ce6bc196e554131d53a8f3fc9899b3a
Nov 17 06:35:59.449 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-3/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 17 06:36:00.077 INFO [stdout] d23f212db828877d8a5d2d2922b34f2b9f62eddfdcb19c87ff7ca3cf34498b78
Nov 17 06:36:00.079 INFO running `"docker" "start" "-a" "d23f212db828877d8a5d2d2922b34f2b9f62eddfdcb19c87ff7ca3cf34498b78"`
Nov 17 06:36:01.275 INFO [stderr] usermod: no changes
Nov 17 06:36:01.384 INFO [stderr]    Compiling toy_blockchain v0.1.0 (/source)
Nov 17 06:36:02.416 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:36:02.416 INFO [stderr]   --> src/main.rs:16:5
Nov 17 06:36:02.417 INFO [stderr]    |
Nov 17 06:36:02.417 INFO [stderr] 16 |     io::stdout().flush();
Nov 17 06:36:02.417 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:36:02.418 INFO [stderr]    |
Nov 17 06:36:02.418 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 17 06:36:02.418 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:36:02.419 INFO [stderr] 
Nov 17 06:36:02.419 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:36:02.419 INFO [stderr]   --> src/main.rs:17:5
Nov 17 06:36:02.420 INFO [stderr]    |
Nov 17 06:36:02.420 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_address);
Nov 17 06:36:02.420 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:36:02.420 INFO [stderr]    |
Nov 17 06:36:02.421 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:36:02.421 INFO [stderr] 
Nov 17 06:36:02.421 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:36:02.422 INFO [stderr]   --> src/main.rs:19:5
Nov 17 06:36:02.422 INFO [stderr]    |
Nov 17 06:36:02.422 INFO [stderr] 19 |     io::stdout().flush();
Nov 17 06:36:02.423 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:36:02.423 INFO [stderr]    |
Nov 17 06:36:02.423 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:36:02.424 INFO [stderr] 
Nov 17 06:36:02.424 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:36:02.424 INFO [stderr]   --> src/main.rs:20:5
Nov 17 06:36:02.424 INFO [stderr]    |
Nov 17 06:36:02.425 INFO [stderr] 20 |     io::stdin().read_line(&mut difficulty);
Nov 17 06:36:02.425 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:36:02.425 INFO [stderr]    |
Nov 17 06:36:02.426 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:36:02.426 INFO [stderr] 
Nov 17 06:36:02.426 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:36:02.427 INFO [stderr]   --> src/main.rs:38:9
Nov 17 06:36:02.427 INFO [stderr]    |
Nov 17 06:36:02.427 INFO [stderr] 38 |         io::stdout().flush();
Nov 17 06:36:02.428 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:36:02.428 INFO [stderr]    |
Nov 17 06:36:02.428 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:36:02.429 INFO [stderr] 
Nov 17 06:36:02.429 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:36:02.429 INFO [stderr]   --> src/main.rs:41:9
Nov 17 06:36:02.430 INFO [stderr]    |
Nov 17 06:36:02.430 INFO [stderr] 41 |         io::stdin().read_line(&mut choice);
Nov 17 06:36:02.430 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:36:02.435 INFO [stderr]    |
Nov 17 06:36:02.435 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:36:02.435 INFO [stderr] 
Nov 17 06:36:02.436 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:36:02.436 INFO [stderr]   --> src/main.rs:57:17
Nov 17 06:36:02.436 INFO [stderr]    |
Nov 17 06:36:02.436 INFO [stderr] 57 |                 io::stdout().flush();
Nov 17 06:36:02.437 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:36:02.437 INFO [stderr]    |
Nov 17 06:36:02.437 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:36:02.438 INFO [stderr] 
Nov 17 06:36:02.438 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:36:02.438 INFO [stderr]   --> src/main.rs:58:17
Nov 17 06:36:02.438 INFO [stderr]    |
Nov 17 06:36:02.439 INFO [stderr] 58 |                 io::stdin().read_line(&mut sender);
Nov 17 06:36:02.439 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:36:02.439 INFO [stderr]    |
Nov 17 06:36:02.439 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:36:02.440 INFO [stderr] 
Nov 17 06:36:02.440 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:36:02.440 INFO [stderr]   --> src/main.rs:60:17
Nov 17 06:36:02.440 INFO [stderr]    |
Nov 17 06:36:02.441 INFO [stderr] 60 |                 io::stdout().flush();
Nov 17 06:36:02.441 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:36:02.441 INFO [stderr]    |
Nov 17 06:36:02.441 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:36:02.442 INFO [stderr] 
Nov 17 06:36:02.442 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:36:02.442 INFO [stderr]   --> src/main.rs:61:17
Nov 17 06:36:02.443 INFO [stderr]    |
Nov 17 06:36:02.443 INFO [stderr] 61 |                 io::stdin().read_line(&mut receiver);
Nov 17 06:36:02.443 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:36:02.444 INFO [stderr]    |
Nov 17 06:36:02.444 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:36:02.444 INFO [stderr] 
Nov 17 06:36:02.444 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:36:02.445 INFO [stderr]   --> src/main.rs:63:17
Nov 17 06:36:02.445 INFO [stderr]    |
Nov 17 06:36:02.445 INFO [stderr] 63 |                 io::stdout().flush();
Nov 17 06:36:02.445 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:36:02.446 INFO [stderr]    |
Nov 17 06:36:02.446 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:36:02.446 INFO [stderr] 
Nov 17 06:36:02.446 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:36:02.447 INFO [stderr]   --> src/main.rs:64:17
Nov 17 06:36:02.447 INFO [stderr]    |
Nov 17 06:36:02.447 INFO [stderr] 64 |                 io::stdin().read_line(&mut amount);
Nov 17 06:36:02.447 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:36:02.448 INFO [stderr]    |
Nov 17 06:36:02.448 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:36:02.448 INFO [stderr] 
Nov 17 06:36:02.448 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:36:02.449 INFO [stderr]   --> src/main.rs:90:17
Nov 17 06:36:02.449 INFO [stderr]    |
Nov 17 06:36:02.449 INFO [stderr] 90 |                 io::stdout().flush();
Nov 17 06:36:02.449 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:36:02.450 INFO [stderr]    |
Nov 17 06:36:02.450 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:36:02.450 INFO [stderr] 
Nov 17 06:36:02.450 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:36:02.451 INFO [stderr]   --> src/main.rs:91:17
Nov 17 06:36:02.451 INFO [stderr]    |
Nov 17 06:36:02.451 INFO [stderr] 91 |                 io::stdin().read_line(&mut new_difficulty);
Nov 17 06:36:02.451 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:36:02.452 INFO [stderr]    |
Nov 17 06:36:02.452 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:36:02.452 INFO [stderr] 
Nov 17 06:36:02.453 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:36:02.453 INFO [stderr]    --> src/main.rs:105:17
Nov 17 06:36:02.453 INFO [stderr]     |
Nov 17 06:36:02.454 INFO [stderr] 105 |                 io::stdout().flush();
Nov 17 06:36:02.454 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:36:02.454 INFO [stderr]     |
Nov 17 06:36:02.455 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:36:02.455 INFO [stderr] 
Nov 17 06:36:02.455 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 06:36:02.456 INFO [stderr]    --> src/main.rs:106:17
Nov 17 06:36:02.456 INFO [stderr]     |
Nov 17 06:36:02.456 INFO [stderr] 106 |                 io::stdin().read_line(&mut new_reward);
Nov 17 06:36:02.457 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 06:36:02.457 INFO [stderr]     |
Nov 17 06:36:02.457 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 06:36:02.457 INFO [stderr] 
Nov 17 06:36:02.911 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.62s
Nov 17 06:36:02.917 INFO [stderr] su: No module specific data is present
Nov 17 06:36:03.931 INFO running `"docker" "inspect" "d23f212db828877d8a5d2d2922b34f2b9f62eddfdcb19c87ff7ca3cf34498b78"`
Nov 17 06:36:04.259 INFO running `"docker" "rm" "-f" "d23f212db828877d8a5d2d2922b34f2b9f62eddfdcb19c87ff7ca3cf34498b78"`
Nov 17 06:36:04.558 INFO [stdout] d23f212db828877d8a5d2d2922b34f2b9f62eddfdcb19c87ff7ca3cf34498b78
Nov 17 06:36:04.563 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-3/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 17 06:36:05.176 INFO [stdout] 758857503eeacb2fb698b4229b2939a02f1be478dd6f2062cd8ce93f5cb91fd8
Nov 17 06:36:05.179 INFO running `"docker" "start" "-a" "758857503eeacb2fb698b4229b2939a02f1be478dd6f2062cd8ce93f5cb91fd8"`
Nov 17 06:36:07.019 INFO [stderr] usermod: no changes
Nov 17 06:36:07.180 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
Nov 17 06:36:07.182 INFO [stderr]      Running /target/debug/deps/toy_blockchain-3c7bc9533d18120f
Nov 17 06:36:07.200 INFO [stdout] 
Nov 17 06:36:07.201 INFO [stdout] running 0 tests
Nov 17 06:36:07.201 INFO [stdout] 
Nov 17 06:36:07.201 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 17 06:36:07.202 INFO [stdout] 
Nov 17 06:36:07.202 INFO [stderr] su: No module specific data is present
Nov 17 06:36:07.950 INFO running `"docker" "inspect" "758857503eeacb2fb698b4229b2939a02f1be478dd6f2062cd8ce93f5cb91fd8"`
Nov 17 06:36:08.245 INFO running `"docker" "rm" "-f" "758857503eeacb2fb698b4229b2939a02f1be478dd6f2062cd8ce93f5cb91fd8"`
Nov 17 06:36:08.586 INFO [stdout] 758857503eeacb2fb698b4229b2939a02f1be478dd6f2062cd8ce93f5cb91fd8