Dec 14 12:04:00.515 INFO testing AvishaiW/toy-blochain-rust against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 12:04:00.515 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 14 12:04:00.698 INFO [stdout] 1d6dfcd68a31a8d0fbdf8f317632985f2fbd93984f983d1172eb85f10a5ab1a7
Dec 14 12:04:00.701 INFO running `"docker" "start" "-a" "1d6dfcd68a31a8d0fbdf8f317632985f2fbd93984f983d1172eb85f10a5ab1a7"`
Dec 14 12:04:01.338 INFO [stderr] usermod: no changes
Dec 14 12:04:01.486 INFO [stderr]    Compiling sha2 v0.8.0
Dec 14 12:04:02.944 INFO [stderr]    Compiling blockchain v0.1.0 (/source)
Dec 14 12:04:04.323 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:04.323 INFO [stderr]   --> src/main.rs:16:5
Dec 14 12:04:04.323 INFO [stderr]    |
Dec 14 12:04:04.323 INFO [stderr] 16 |     io::stdout().flush();
Dec 14 12:04:04.323 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:04.323 INFO [stderr]    |
Dec 14 12:04:04.323 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 12:04:04.323 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:04.323 INFO [stderr] 
Dec 14 12:04:04.323 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:04.323 INFO [stderr]   --> src/main.rs:17:5
Dec 14 12:04:04.323 INFO [stderr]    |
Dec 14 12:04:04.323 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_addr);
Dec 14 12:04:04.323 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:04.323 INFO [stderr]    |
Dec 14 12:04:04.323 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:04.323 INFO [stderr] 
Dec 14 12:04:04.323 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:04.323 INFO [stderr]   --> src/main.rs:19:5
Dec 14 12:04:04.323 INFO [stderr]    |
Dec 14 12:04:04.323 INFO [stderr] 19 |     io::stdout().flush();
Dec 14 12:04:04.323 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:04.323 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:04.324 INFO [stderr] 
Dec 14 12:04:04.324 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:04.324 INFO [stderr]   --> src/main.rs:20:5
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr] 20 |     io::stdin().read_line(&mut difficulty);
Dec 14 12:04:04.324 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:04.324 INFO [stderr] 
Dec 14 12:04:04.324 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:04.324 INFO [stderr]   --> src/main.rs:33:9
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr] 33 |         io::stdout().flush();
Dec 14 12:04:04.324 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:04.324 INFO [stderr] 
Dec 14 12:04:04.324 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:04.324 INFO [stderr]   --> src/main.rs:35:9
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr] 35 |         io::stdin().read_line(&mut choice);
Dec 14 12:04:04.324 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:04.324 INFO [stderr] 
Dec 14 12:04:04.324 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:04.324 INFO [stderr]   --> src/main.rs:50:17
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr] 50 |                 io::stdout().flush();
Dec 14 12:04:04.324 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:04.324 INFO [stderr] 
Dec 14 12:04:04.324 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:04.324 INFO [stderr]   --> src/main.rs:51:17
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr] 51 |                 io::stdin().read_line(&mut sender);
Dec 14 12:04:04.324 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:04.324 INFO [stderr] 
Dec 14 12:04:04.324 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:04.324 INFO [stderr]   --> src/main.rs:53:17
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr] 53 |                 io::stdout().flush();
Dec 14 12:04:04.324 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:04.324 INFO [stderr] 
Dec 14 12:04:04.324 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:04.324 INFO [stderr]   --> src/main.rs:54:17
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr] 54 |                 io::stdin().read_line(&mut receiver);
Dec 14 12:04:04.324 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:04.324 INFO [stderr] 
Dec 14 12:04:04.324 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:04.324 INFO [stderr]   --> src/main.rs:56:17
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr] 56 |                 io::stdout().flush();
Dec 14 12:04:04.324 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:04.324 INFO [stderr] 
Dec 14 12:04:04.324 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:04.324 INFO [stderr]   --> src/main.rs:57:17
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr] 57 |                 io::stdin().read_line(&mut amount);
Dec 14 12:04:04.324 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:04.324 INFO [stderr] 
Dec 14 12:04:04.324 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:04.324 INFO [stderr]   --> src/main.rs:81:21
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr] 81 |                     io::stdout().flush();
Dec 14 12:04:04.324 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:04.324 INFO [stderr] 
Dec 14 12:04:04.324 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:04.324 INFO [stderr]   --> src/main.rs:82:21
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr] 82 |                     io::stdin().read_line(&mut new_diff);
Dec 14 12:04:04.324 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:04.324 INFO [stderr] 
Dec 14 12:04:04.324 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:04.324 INFO [stderr]   --> src/main.rs:92:17
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.324 INFO [stderr] 92 |                 io::stdout().flush();
Dec 14 12:04:04.324 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:04.324 INFO [stderr]    |
Dec 14 12:04:04.325 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:04.325 INFO [stderr] 
Dec 14 12:04:04.325 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:04.325 INFO [stderr]   --> src/main.rs:93:17
Dec 14 12:04:04.325 INFO [stderr]    |
Dec 14 12:04:04.325 INFO [stderr] 93 |                 io::stdin().read_line(&mut new_reward);
Dec 14 12:04:04.325 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:04.325 INFO [stderr]    |
Dec 14 12:04:04.325 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:04.325 INFO [stderr] 
Dec 14 12:04:05.595 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.22s
Dec 14 12:04:05.599 INFO [stderr] su: No module specific data is present
Dec 14 12:04:06.307 INFO running `"docker" "inspect" "1d6dfcd68a31a8d0fbdf8f317632985f2fbd93984f983d1172eb85f10a5ab1a7"`
Dec 14 12:04:06.592 INFO running `"docker" "rm" "-f" "1d6dfcd68a31a8d0fbdf8f317632985f2fbd93984f983d1172eb85f10a5ab1a7"`
Dec 14 12:04:06.897 INFO [stdout] 1d6dfcd68a31a8d0fbdf8f317632985f2fbd93984f983d1172eb85f10a5ab1a7
Dec 14 12:04:06.900 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 14 12:04:07.311 INFO [stdout] 064c77937b2db52d3eca041f48f83b6225e3256343194874b95b5fed3124bf89
Dec 14 12:04:07.315 INFO running `"docker" "start" "-a" "064c77937b2db52d3eca041f48f83b6225e3256343194874b95b5fed3124bf89"`
Dec 14 12:04:08.475 INFO [stderr] usermod: no changes
Dec 14 12:04:08.600 INFO [stderr]    Compiling blockchain v0.1.0 (/source)
Dec 14 12:04:09.911 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:09.911 INFO [stderr]   --> src/main.rs:16:5
Dec 14 12:04:09.911 INFO [stderr]    |
Dec 14 12:04:09.911 INFO [stderr] 16 |     io::stdout().flush();
Dec 14 12:04:09.911 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:09.911 INFO [stderr]    |
Dec 14 12:04:09.911 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 12:04:09.911 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:09.911 INFO [stderr] 
Dec 14 12:04:09.911 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:09.911 INFO [stderr]   --> src/main.rs:17:5
Dec 14 12:04:09.911 INFO [stderr]    |
Dec 14 12:04:09.911 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_addr);
Dec 14 12:04:09.911 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:09.911 INFO [stderr]    |
Dec 14 12:04:09.911 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:09.911 INFO [stderr] 
Dec 14 12:04:09.912 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:09.912 INFO [stderr]   --> src/main.rs:19:5
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr] 19 |     io::stdout().flush();
Dec 14 12:04:09.912 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:09.912 INFO [stderr] 
Dec 14 12:04:09.912 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:09.912 INFO [stderr]   --> src/main.rs:20:5
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr] 20 |     io::stdin().read_line(&mut difficulty);
Dec 14 12:04:09.912 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:09.912 INFO [stderr] 
Dec 14 12:04:09.912 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:09.912 INFO [stderr]   --> src/main.rs:33:9
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr] 33 |         io::stdout().flush();
Dec 14 12:04:09.912 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:09.912 INFO [stderr] 
Dec 14 12:04:09.912 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:09.912 INFO [stderr]   --> src/main.rs:35:9
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr] 35 |         io::stdin().read_line(&mut choice);
Dec 14 12:04:09.912 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:09.912 INFO [stderr] 
Dec 14 12:04:09.912 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:09.912 INFO [stderr]   --> src/main.rs:50:17
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr] 50 |                 io::stdout().flush();
Dec 14 12:04:09.912 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:09.912 INFO [stderr] 
Dec 14 12:04:09.912 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:09.912 INFO [stderr]   --> src/main.rs:51:17
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr] 51 |                 io::stdin().read_line(&mut sender);
Dec 14 12:04:09.912 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:09.912 INFO [stderr] 
Dec 14 12:04:09.912 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:09.912 INFO [stderr]   --> src/main.rs:53:17
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr] 53 |                 io::stdout().flush();
Dec 14 12:04:09.912 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:09.912 INFO [stderr] 
Dec 14 12:04:09.912 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:09.912 INFO [stderr]   --> src/main.rs:54:17
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr] 54 |                 io::stdin().read_line(&mut receiver);
Dec 14 12:04:09.912 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:09.912 INFO [stderr] 
Dec 14 12:04:09.912 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:09.912 INFO [stderr]   --> src/main.rs:56:17
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr] 56 |                 io::stdout().flush();
Dec 14 12:04:09.912 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:09.912 INFO [stderr] 
Dec 14 12:04:09.912 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:09.912 INFO [stderr]   --> src/main.rs:57:17
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr] 57 |                 io::stdin().read_line(&mut amount);
Dec 14 12:04:09.912 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:09.912 INFO [stderr] 
Dec 14 12:04:09.912 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:09.912 INFO [stderr]   --> src/main.rs:81:21
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr] 81 |                     io::stdout().flush();
Dec 14 12:04:09.912 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:09.912 INFO [stderr]    |
Dec 14 12:04:09.912 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:09.912 INFO [stderr] 
Dec 14 12:04:09.912 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:09.913 INFO [stderr]   --> src/main.rs:82:21
Dec 14 12:04:09.913 INFO [stderr]    |
Dec 14 12:04:09.913 INFO [stderr] 82 |                     io::stdin().read_line(&mut new_diff);
Dec 14 12:04:09.913 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:09.913 INFO [stderr]    |
Dec 14 12:04:09.913 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:09.913 INFO [stderr] 
Dec 14 12:04:09.913 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:09.913 INFO [stderr]   --> src/main.rs:92:17
Dec 14 12:04:09.913 INFO [stderr]    |
Dec 14 12:04:09.913 INFO [stderr] 92 |                 io::stdout().flush();
Dec 14 12:04:09.913 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:09.913 INFO [stderr]    |
Dec 14 12:04:09.913 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:09.913 INFO [stderr] 
Dec 14 12:04:09.913 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 12:04:09.913 INFO [stderr]   --> src/main.rs:93:17
Dec 14 12:04:09.913 INFO [stderr]    |
Dec 14 12:04:09.913 INFO [stderr] 93 |                 io::stdin().read_line(&mut new_reward);
Dec 14 12:04:09.913 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 12:04:09.913 INFO [stderr]    |
Dec 14 12:04:09.913 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 12:04:09.913 INFO [stderr] 
Dec 14 12:04:10.194 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.69s
Dec 14 12:04:10.200 INFO [stderr] su: No module specific data is present
Dec 14 12:04:10.761 INFO running `"docker" "inspect" "064c77937b2db52d3eca041f48f83b6225e3256343194874b95b5fed3124bf89"`
Dec 14 12:04:11.041 INFO running `"docker" "rm" "-f" "064c77937b2db52d3eca041f48f83b6225e3256343194874b95b5fed3124bf89"`
Dec 14 12:04:11.323 INFO [stdout] 064c77937b2db52d3eca041f48f83b6225e3256343194874b95b5fed3124bf89
Dec 14 12:04:11.335 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 14 12:04:11.965 INFO [stdout] 62e1d7c3ff861fd5a91590909fe0c4c0f124ee6b78909f78f8075721d78511bb
Dec 14 12:04:11.966 INFO running `"docker" "start" "-a" "62e1d7c3ff861fd5a91590909fe0c4c0f124ee6b78909f78f8075721d78511bb"`
Dec 14 12:04:12.869 INFO [stderr] usermod: no changes
Dec 14 12:04:12.960 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
Dec 14 12:04:12.974 INFO [stderr]      Running /target/debug/deps/blockchain-7b96a1672d7f4b83
Dec 14 12:04:12.975 INFO [stdout] 
Dec 14 12:04:12.975 INFO [stdout] running 0 tests
Dec 14 12:04:12.975 INFO [stdout] 
Dec 14 12:04:12.975 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 12:04:12.975 INFO [stdout] 
Dec 14 12:04:12.977 INFO [stderr] su: No module specific data is present
Dec 14 12:04:13.304 INFO running `"docker" "inspect" "62e1d7c3ff861fd5a91590909fe0c4c0f124ee6b78909f78f8075721d78511bb"`
Dec 14 12:04:13.449 INFO running `"docker" "rm" "-f" "62e1d7c3ff861fd5a91590909fe0c4c0f124ee6b78909f78f8075721d78511bb"`
Dec 14 12:04:13.563 INFO [stdout] 62e1d7c3ff861fd5a91590909fe0c4c0f124ee6b78909f78f8075721d78511bb