Dec 06 03:49:58.317 INFO testing christiansakai/toy_blockchain_rust against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 06 03:49:58.317 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-5/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 06 03:49:58.740 INFO [stdout] f4c682f7afcb9a4833ab6b8e976473a1f50c4577d9662588e3e3d1f49f247a0d
Dec 06 03:49:58.746 INFO running `"docker" "start" "-a" "f4c682f7afcb9a4833ab6b8e976473a1f50c4577d9662588e3e3d1f49f247a0d"`
Dec 06 03:50:00.280 INFO [stderr] usermod: no changes
Dec 06 03:50:00.439 INFO [stderr]    Compiling serde_derive v1.0.75
Dec 06 03:50:11.600 INFO [stderr]    Compiling toy_blockchain v0.1.0 (/source)
Dec 06 03:50:12.679 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:12.679 INFO [stderr]   --> src/main.rs:16:5
Dec 06 03:50:12.679 INFO [stderr]    |
Dec 06 03:50:12.679 INFO [stderr] 16 |     io::stdout().flush();
Dec 06 03:50:12.679 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:12.679 INFO [stderr]    |
Dec 06 03:50:12.679 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 06 03:50:12.679 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:12.679 INFO [stderr] 
Dec 06 03:50:12.679 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:12.679 INFO [stderr]   --> src/main.rs:17:5
Dec 06 03:50:12.679 INFO [stderr]    |
Dec 06 03:50:12.679 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_address);
Dec 06 03:50:12.679 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:12.679 INFO [stderr]    |
Dec 06 03:50:12.679 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:12.679 INFO [stderr] 
Dec 06 03:50:12.679 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:12.679 INFO [stderr]   --> src/main.rs:19:5
Dec 06 03:50:12.679 INFO [stderr]    |
Dec 06 03:50:12.679 INFO [stderr] 19 |     io::stdout().flush();
Dec 06 03:50:12.679 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:12.679 INFO [stderr]    |
Dec 06 03:50:12.679 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:12.679 INFO [stderr] 
Dec 06 03:50:12.679 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:12.679 INFO [stderr]   --> src/main.rs:20:5
Dec 06 03:50:12.679 INFO [stderr]    |
Dec 06 03:50:12.679 INFO [stderr] 20 |     io::stdin().read_line(&mut difficulty);
Dec 06 03:50:12.679 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:12.679 INFO [stderr]    |
Dec 06 03:50:12.679 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:12.679 INFO [stderr] 
Dec 06 03:50:12.679 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:12.679 INFO [stderr]   --> src/main.rs:38:9
Dec 06 03:50:12.679 INFO [stderr]    |
Dec 06 03:50:12.679 INFO [stderr] 38 |         io::stdout().flush();
Dec 06 03:50:12.679 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:12.679 INFO [stderr]    |
Dec 06 03:50:12.679 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:12.679 INFO [stderr] 
Dec 06 03:50:12.679 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:12.679 INFO [stderr]   --> src/main.rs:41:9
Dec 06 03:50:12.679 INFO [stderr]    |
Dec 06 03:50:12.679 INFO [stderr] 41 |         io::stdin().read_line(&mut choice);
Dec 06 03:50:12.679 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:12.679 INFO [stderr]    |
Dec 06 03:50:12.679 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:12.679 INFO [stderr] 
Dec 06 03:50:12.679 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:12.679 INFO [stderr]   --> src/main.rs:57:17
Dec 06 03:50:12.679 INFO [stderr]    |
Dec 06 03:50:12.679 INFO [stderr] 57 |                 io::stdout().flush();
Dec 06 03:50:12.679 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:12.679 INFO [stderr]    |
Dec 06 03:50:12.679 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:12.679 INFO [stderr] 
Dec 06 03:50:12.679 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:12.679 INFO [stderr]   --> src/main.rs:58:17
Dec 06 03:50:12.679 INFO [stderr]    |
Dec 06 03:50:12.680 INFO [stderr] 58 |                 io::stdin().read_line(&mut sender);
Dec 06 03:50:12.680 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:12.680 INFO [stderr]    |
Dec 06 03:50:12.680 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:12.680 INFO [stderr] 
Dec 06 03:50:12.680 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:12.680 INFO [stderr]   --> src/main.rs:60:17
Dec 06 03:50:12.680 INFO [stderr]    |
Dec 06 03:50:12.680 INFO [stderr] 60 |                 io::stdout().flush();
Dec 06 03:50:12.680 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:12.680 INFO [stderr]    |
Dec 06 03:50:12.680 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:12.680 INFO [stderr] 
Dec 06 03:50:12.680 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:12.680 INFO [stderr]   --> src/main.rs:61:17
Dec 06 03:50:12.680 INFO [stderr]    |
Dec 06 03:50:12.680 INFO [stderr] 61 |                 io::stdin().read_line(&mut receiver);
Dec 06 03:50:12.680 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:12.680 INFO [stderr]    |
Dec 06 03:50:12.680 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:12.680 INFO [stderr] 
Dec 06 03:50:12.680 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:12.680 INFO [stderr]   --> src/main.rs:63:17
Dec 06 03:50:12.680 INFO [stderr]    |
Dec 06 03:50:12.680 INFO [stderr] 63 |                 io::stdout().flush();
Dec 06 03:50:12.680 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:12.680 INFO [stderr]    |
Dec 06 03:50:12.680 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:12.680 INFO [stderr] 
Dec 06 03:50:12.680 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:12.680 INFO [stderr]   --> src/main.rs:64:17
Dec 06 03:50:12.680 INFO [stderr]    |
Dec 06 03:50:12.680 INFO [stderr] 64 |                 io::stdin().read_line(&mut amount);
Dec 06 03:50:12.680 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:12.680 INFO [stderr]    |
Dec 06 03:50:12.680 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:12.680 INFO [stderr] 
Dec 06 03:50:12.680 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:12.680 INFO [stderr]   --> src/main.rs:90:17
Dec 06 03:50:12.680 INFO [stderr]    |
Dec 06 03:50:12.680 INFO [stderr] 90 |                 io::stdout().flush();
Dec 06 03:50:12.680 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:12.680 INFO [stderr]    |
Dec 06 03:50:12.680 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:12.680 INFO [stderr] 
Dec 06 03:50:12.680 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:12.680 INFO [stderr]   --> src/main.rs:91:17
Dec 06 03:50:12.680 INFO [stderr]    |
Dec 06 03:50:12.680 INFO [stderr] 91 |                 io::stdin().read_line(&mut new_difficulty);
Dec 06 03:50:12.680 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:12.680 INFO [stderr]    |
Dec 06 03:50:12.680 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:12.680 INFO [stderr] 
Dec 06 03:50:12.680 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:12.680 INFO [stderr]    --> src/main.rs:105:17
Dec 06 03:50:12.680 INFO [stderr]     |
Dec 06 03:50:12.680 INFO [stderr] 105 |                 io::stdout().flush();
Dec 06 03:50:12.680 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:12.680 INFO [stderr]     |
Dec 06 03:50:12.680 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:12.680 INFO [stderr] 
Dec 06 03:50:12.680 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:12.680 INFO [stderr]    --> src/main.rs:106:17
Dec 06 03:50:12.680 INFO [stderr]     |
Dec 06 03:50:12.680 INFO [stderr] 106 |                 io::stdin().read_line(&mut new_reward);
Dec 06 03:50:12.680 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:12.680 INFO [stderr]     |
Dec 06 03:50:12.680 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:12.680 INFO [stderr] 
Dec 06 03:50:13.530 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.22s
Dec 06 03:50:13.534 INFO [stderr] su: No module specific data is present
Dec 06 03:50:14.166 INFO running `"docker" "inspect" "f4c682f7afcb9a4833ab6b8e976473a1f50c4577d9662588e3e3d1f49f247a0d"`
Dec 06 03:50:14.396 INFO running `"docker" "rm" "-f" "f4c682f7afcb9a4833ab6b8e976473a1f50c4577d9662588e3e3d1f49f247a0d"`
Dec 06 03:50:14.724 INFO [stdout] f4c682f7afcb9a4833ab6b8e976473a1f50c4577d9662588e3e3d1f49f247a0d
Dec 06 03:50:14.732 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-5/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 06 03:50:15.136 INFO [stdout] eeb8c95cb775f2f8cc8b44212bc8f5f374a3f9f2f5d7cc125cf83b6c55ad9f1b
Dec 06 03:50:15.142 INFO running `"docker" "start" "-a" "eeb8c95cb775f2f8cc8b44212bc8f5f374a3f9f2f5d7cc125cf83b6c55ad9f1b"`
Dec 06 03:50:16.197 INFO [stderr] usermod: no changes
Dec 06 03:50:16.329 INFO [stderr]    Compiling toy_blockchain v0.1.0 (/source)
Dec 06 03:50:17.240 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:17.240 INFO [stderr]   --> src/main.rs:16:5
Dec 06 03:50:17.240 INFO [stderr]    |
Dec 06 03:50:17.240 INFO [stderr] 16 |     io::stdout().flush();
Dec 06 03:50:17.240 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:17.240 INFO [stderr]    |
Dec 06 03:50:17.240 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 06 03:50:17.240 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:17.240 INFO [stderr] 
Dec 06 03:50:17.240 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:17.240 INFO [stderr]   --> src/main.rs:17:5
Dec 06 03:50:17.240 INFO [stderr]    |
Dec 06 03:50:17.240 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_address);
Dec 06 03:50:17.240 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:17.240 INFO [stderr]    |
Dec 06 03:50:17.240 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:17.240 INFO [stderr] 
Dec 06 03:50:17.240 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:17.240 INFO [stderr]   --> src/main.rs:19:5
Dec 06 03:50:17.240 INFO [stderr]    |
Dec 06 03:50:17.241 INFO [stderr] 19 |     io::stdout().flush();
Dec 06 03:50:17.241 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:17.241 INFO [stderr]    |
Dec 06 03:50:17.243 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:17.243 INFO [stderr] 
Dec 06 03:50:17.243 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:17.243 INFO [stderr]   --> src/main.rs:20:5
Dec 06 03:50:17.243 INFO [stderr]    |
Dec 06 03:50:17.243 INFO [stderr] 20 |     io::stdin().read_line(&mut difficulty);
Dec 06 03:50:17.243 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:17.243 INFO [stderr]    |
Dec 06 03:50:17.243 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:17.243 INFO [stderr] 
Dec 06 03:50:17.243 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:17.243 INFO [stderr]   --> src/main.rs:38:9
Dec 06 03:50:17.243 INFO [stderr]    |
Dec 06 03:50:17.243 INFO [stderr] 38 |         io::stdout().flush();
Dec 06 03:50:17.243 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:17.248 INFO [stderr]    |
Dec 06 03:50:17.248 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:17.248 INFO [stderr] 
Dec 06 03:50:17.248 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:17.248 INFO [stderr]   --> src/main.rs:41:9
Dec 06 03:50:17.248 INFO [stderr]    |
Dec 06 03:50:17.248 INFO [stderr] 41 |         io::stdin().read_line(&mut choice);
Dec 06 03:50:17.248 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:17.248 INFO [stderr]    |
Dec 06 03:50:17.248 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:17.248 INFO [stderr] 
Dec 06 03:50:17.248 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:17.248 INFO [stderr]   --> src/main.rs:57:17
Dec 06 03:50:17.248 INFO [stderr]    |
Dec 06 03:50:17.248 INFO [stderr] 57 |                 io::stdout().flush();
Dec 06 03:50:17.248 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:17.248 INFO [stderr]    |
Dec 06 03:50:17.248 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:17.248 INFO [stderr] 
Dec 06 03:50:17.248 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:17.248 INFO [stderr]   --> src/main.rs:58:17
Dec 06 03:50:17.248 INFO [stderr]    |
Dec 06 03:50:17.248 INFO [stderr] 58 |                 io::stdin().read_line(&mut sender);
Dec 06 03:50:17.248 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:17.248 INFO [stderr]    |
Dec 06 03:50:17.248 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:17.248 INFO [stderr] 
Dec 06 03:50:17.248 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:17.248 INFO [stderr]   --> src/main.rs:60:17
Dec 06 03:50:17.248 INFO [stderr]    |
Dec 06 03:50:17.248 INFO [stderr] 60 |                 io::stdout().flush();
Dec 06 03:50:17.248 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:17.248 INFO [stderr]    |
Dec 06 03:50:17.248 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:17.248 INFO [stderr] 
Dec 06 03:50:17.248 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:17.248 INFO [stderr]   --> src/main.rs:61:17
Dec 06 03:50:17.248 INFO [stderr]    |
Dec 06 03:50:17.248 INFO [stderr] 61 |                 io::stdin().read_line(&mut receiver);
Dec 06 03:50:17.248 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:17.248 INFO [stderr]    |
Dec 06 03:50:17.248 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:17.248 INFO [stderr] 
Dec 06 03:50:17.248 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:17.248 INFO [stderr]   --> src/main.rs:63:17
Dec 06 03:50:17.248 INFO [stderr]    |
Dec 06 03:50:17.248 INFO [stderr] 63 |                 io::stdout().flush();
Dec 06 03:50:17.248 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:17.248 INFO [stderr]    |
Dec 06 03:50:17.248 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:17.249 INFO [stderr] 
Dec 06 03:50:17.249 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:17.249 INFO [stderr]   --> src/main.rs:64:17
Dec 06 03:50:17.249 INFO [stderr]    |
Dec 06 03:50:17.249 INFO [stderr] 64 |                 io::stdin().read_line(&mut amount);
Dec 06 03:50:17.249 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:17.249 INFO [stderr]    |
Dec 06 03:50:17.249 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:17.249 INFO [stderr] 
Dec 06 03:50:17.249 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:17.249 INFO [stderr]   --> src/main.rs:90:17
Dec 06 03:50:17.249 INFO [stderr]    |
Dec 06 03:50:17.249 INFO [stderr] 90 |                 io::stdout().flush();
Dec 06 03:50:17.249 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:17.249 INFO [stderr]    |
Dec 06 03:50:17.249 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:17.249 INFO [stderr] 
Dec 06 03:50:17.249 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:17.249 INFO [stderr]   --> src/main.rs:91:17
Dec 06 03:50:17.249 INFO [stderr]    |
Dec 06 03:50:17.249 INFO [stderr] 91 |                 io::stdin().read_line(&mut new_difficulty);
Dec 06 03:50:17.249 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:17.249 INFO [stderr]    |
Dec 06 03:50:17.249 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:17.249 INFO [stderr] 
Dec 06 03:50:17.252 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:17.252 INFO [stderr]    --> src/main.rs:105:17
Dec 06 03:50:17.252 INFO [stderr]     |
Dec 06 03:50:17.252 INFO [stderr] 105 |                 io::stdout().flush();
Dec 06 03:50:17.252 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:17.252 INFO [stderr]     |
Dec 06 03:50:17.252 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:17.252 INFO [stderr] 
Dec 06 03:50:17.252 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 03:50:17.252 INFO [stderr]    --> src/main.rs:106:17
Dec 06 03:50:17.252 INFO [stderr]     |
Dec 06 03:50:17.252 INFO [stderr] 106 |                 io::stdin().read_line(&mut new_reward);
Dec 06 03:50:17.252 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:50:17.252 INFO [stderr]     |
Dec 06 03:50:17.252 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 03:50:17.252 INFO [stderr] 
Dec 06 03:50:17.658 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.43s
Dec 06 03:50:17.665 INFO [stderr] su: No module specific data is present
Dec 06 03:50:18.881 INFO running `"docker" "inspect" "eeb8c95cb775f2f8cc8b44212bc8f5f374a3f9f2f5d7cc125cf83b6c55ad9f1b"`
Dec 06 03:50:19.212 INFO running `"docker" "rm" "-f" "eeb8c95cb775f2f8cc8b44212bc8f5f374a3f9f2f5d7cc125cf83b6c55ad9f1b"`
Dec 06 03:50:19.528 INFO [stdout] eeb8c95cb775f2f8cc8b44212bc8f5f374a3f9f2f5d7cc125cf83b6c55ad9f1b
Dec 06 03:50:19.536 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-5/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 06 03:50:20.012 INFO [stdout] b56d69498dcc1fdce88282dc882b3ef8872da4bd5cc0d5f378c782e89497e658
Dec 06 03:50:20.014 INFO running `"docker" "start" "-a" "b56d69498dcc1fdce88282dc882b3ef8872da4bd5cc0d5f378c782e89497e658"`
Dec 06 03:50:21.547 INFO [stderr] usermod: no changes
Dec 06 03:50:21.708 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
Dec 06 03:50:21.734 INFO [stderr]      Running /target/debug/deps/toy_blockchain-05851eaed6ebd83a
Dec 06 03:50:21.734 INFO [stdout] 
Dec 06 03:50:21.734 INFO [stderr] su: No module specific data is present
Dec 06 03:50:21.734 INFO [stdout] running 0 tests
Dec 06 03:50:21.734 INFO [stdout] 
Dec 06 03:50:21.734 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 03:50:21.734 INFO [stdout] 
Dec 06 03:50:22.242 INFO running `"docker" "inspect" "b56d69498dcc1fdce88282dc882b3ef8872da4bd5cc0d5f378c782e89497e658"`
Dec 06 03:50:22.499 INFO running `"docker" "rm" "-f" "b56d69498dcc1fdce88282dc882b3ef8872da4bd5cc0d5f378c782e89497e658"`
Dec 06 03:50:22.720 INFO [stdout] b56d69498dcc1fdce88282dc882b3ef8872da4bd5cc0d5f378c782e89497e658