Dec 05 20:41:24.922 INFO testing iveltondequeiroz/tiny-chain against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 05 20:41:24.922 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-3/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 05 20:41:25.414 INFO [stdout] 3869f5e592dee541165037606c58bc29c399d5fe04079331152e188e3d0b4252
Dec 05 20:41:25.424 INFO running `"docker" "start" "-a" "3869f5e592dee541165037606c58bc29c399d5fe04079331152e188e3d0b4252"`
Dec 05 20:41:26.892 INFO [stderr] usermod: no changes
Dec 05 20:41:27.043 INFO [stderr]    Compiling tinychain v0.1.0 (/source)
Dec 05 20:41:28.277 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:28.277 INFO [stderr]   --> src/main.rs:16:5
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr] 16 |     io::stdout().flush();
Dec 05 20:41:28.277 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 20:41:28.277 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:28.277 INFO [stderr] 
Dec 05 20:41:28.277 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:28.277 INFO [stderr]   --> src/main.rs:17:5
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_addr);
Dec 05 20:41:28.277 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:28.277 INFO [stderr] 
Dec 05 20:41:28.277 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:28.277 INFO [stderr]   --> src/main.rs:19:5
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr] 19 |     io::stdout().flush();
Dec 05 20:41:28.277 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:28.277 INFO [stderr] 
Dec 05 20:41:28.277 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:28.277 INFO [stderr]   --> src/main.rs:20:5
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr] 20 |     io::stdin().read_line(&mut difficulty);
Dec 05 20:41:28.277 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:28.277 INFO [stderr] 
Dec 05 20:41:28.277 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:28.277 INFO [stderr]   --> src/main.rs:33:9
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr] 33 |         io::stdout().flush();
Dec 05 20:41:28.277 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:28.277 INFO [stderr] 
Dec 05 20:41:28.277 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:28.277 INFO [stderr]   --> src/main.rs:35:9
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr] 35 |         io::stdin().read_line(&mut choice);
Dec 05 20:41:28.277 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:28.277 INFO [stderr] 
Dec 05 20:41:28.277 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:28.277 INFO [stderr]   --> src/main.rs:50:17
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr] 50 |                 io::stdout().flush();
Dec 05 20:41:28.277 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:28.277 INFO [stderr] 
Dec 05 20:41:28.277 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:28.277 INFO [stderr]   --> src/main.rs:51:17
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr] 51 |                 io::stdin().read_line(&mut sender);
Dec 05 20:41:28.277 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:28.277 INFO [stderr] 
Dec 05 20:41:28.277 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:28.277 INFO [stderr]   --> src/main.rs:53:17
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr] 53 |                 io::stdout().flush();
Dec 05 20:41:28.277 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:28.277 INFO [stderr] 
Dec 05 20:41:28.277 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:28.277 INFO [stderr]   --> src/main.rs:54:17
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr] 54 |                 io::stdin().read_line(&mut receiver);
Dec 05 20:41:28.277 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:28.277 INFO [stderr]    |
Dec 05 20:41:28.277 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:28.277 INFO [stderr] 
Dec 05 20:41:28.277 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:28.278 INFO [stderr]   --> src/main.rs:56:17
Dec 05 20:41:28.278 INFO [stderr]    |
Dec 05 20:41:28.278 INFO [stderr] 56 |                 io::stdout().flush();
Dec 05 20:41:28.278 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:28.278 INFO [stderr]    |
Dec 05 20:41:28.278 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:28.278 INFO [stderr] 
Dec 05 20:41:28.278 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:28.278 INFO [stderr]   --> src/main.rs:57:17
Dec 05 20:41:28.278 INFO [stderr]    |
Dec 05 20:41:28.278 INFO [stderr] 57 |                 io::stdin().read_line(&mut amount);
Dec 05 20:41:28.278 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:28.278 INFO [stderr]    |
Dec 05 20:41:28.278 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:28.278 INFO [stderr] 
Dec 05 20:41:28.278 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:28.278 INFO [stderr]   --> src/main.rs:81:17
Dec 05 20:41:28.278 INFO [stderr]    |
Dec 05 20:41:28.278 INFO [stderr] 81 |                 io::stdout().flush();
Dec 05 20:41:28.278 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:28.278 INFO [stderr]    |
Dec 05 20:41:28.278 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:28.278 INFO [stderr] 
Dec 05 20:41:28.278 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:28.278 INFO [stderr]   --> src/main.rs:82:17
Dec 05 20:41:28.278 INFO [stderr]    |
Dec 05 20:41:28.278 INFO [stderr] 82 |                 io::stdin().read_line(&mut new_diff);
Dec 05 20:41:28.278 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:28.278 INFO [stderr]    |
Dec 05 20:41:28.278 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:28.278 INFO [stderr] 
Dec 05 20:41:28.278 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:28.278 INFO [stderr]   --> src/main.rs:92:17
Dec 05 20:41:28.278 INFO [stderr]    |
Dec 05 20:41:28.278 INFO [stderr] 92 |                 io::stdout().flush();
Dec 05 20:41:28.278 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:28.278 INFO [stderr]    |
Dec 05 20:41:28.278 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:28.278 INFO [stderr] 
Dec 05 20:41:28.278 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:28.278 INFO [stderr]   --> src/main.rs:93:17
Dec 05 20:41:28.278 INFO [stderr]    |
Dec 05 20:41:28.278 INFO [stderr] 93 |                 io::stdin().read_line(&mut new_reward);
Dec 05 20:41:28.278 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:28.278 INFO [stderr]    |
Dec 05 20:41:28.278 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:28.278 INFO [stderr] 
Dec 05 20:41:29.587 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.67s
Dec 05 20:41:29.592 INFO [stderr] su: No module specific data is present
Dec 05 20:41:30.699 INFO running `"docker" "inspect" "3869f5e592dee541165037606c58bc29c399d5fe04079331152e188e3d0b4252"`
Dec 05 20:41:31.002 INFO running `"docker" "rm" "-f" "3869f5e592dee541165037606c58bc29c399d5fe04079331152e188e3d0b4252"`
Dec 05 20:41:31.408 INFO [stdout] 3869f5e592dee541165037606c58bc29c399d5fe04079331152e188e3d0b4252
Dec 05 20:41:31.416 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-3/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 05 20:41:31.820 INFO [stdout] 0e34b6fe0c1c0aa5f70f050bfa8a7503f701eb8581b7f428878157a8af69d5d2
Dec 05 20:41:31.826 INFO running `"docker" "start" "-a" "0e34b6fe0c1c0aa5f70f050bfa8a7503f701eb8581b7f428878157a8af69d5d2"`
Dec 05 20:41:33.555 INFO [stderr] usermod: no changes
Dec 05 20:41:33.708 INFO [stderr]    Compiling tinychain v0.1.0 (/source)
Dec 05 20:41:34.640 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:34.640 INFO [stderr]   --> src/main.rs:16:5
Dec 05 20:41:34.640 INFO [stderr]    |
Dec 05 20:41:34.640 INFO [stderr] 16 |     io::stdout().flush();
Dec 05 20:41:34.640 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:34.641 INFO [stderr]    |
Dec 05 20:41:34.641 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 20:41:34.641 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:34.641 INFO [stderr] 
Dec 05 20:41:34.641 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:34.641 INFO [stderr]   --> src/main.rs:17:5
Dec 05 20:41:34.641 INFO [stderr]    |
Dec 05 20:41:34.641 INFO [stderr] 17 |     io::stdin().read_line(&mut miner_addr);
Dec 05 20:41:34.641 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:34.641 INFO [stderr]    |
Dec 05 20:41:34.641 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:34.641 INFO [stderr] 
Dec 05 20:41:34.641 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:34.641 INFO [stderr]   --> src/main.rs:19:5
Dec 05 20:41:34.641 INFO [stderr]    |
Dec 05 20:41:34.641 INFO [stderr] 19 |     io::stdout().flush();
Dec 05 20:41:34.641 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:34.641 INFO [stderr]    |
Dec 05 20:41:34.641 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:34.641 INFO [stderr] 
Dec 05 20:41:34.641 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:34.641 INFO [stderr]   --> src/main.rs:20:5
Dec 05 20:41:34.641 INFO [stderr]    |
Dec 05 20:41:34.641 INFO [stderr] 20 |     io::stdin().read_line(&mut difficulty);
Dec 05 20:41:34.641 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:34.641 INFO [stderr]    |
Dec 05 20:41:34.641 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:34.641 INFO [stderr] 
Dec 05 20:41:34.641 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:34.641 INFO [stderr]   --> src/main.rs:33:9
Dec 05 20:41:34.641 INFO [stderr]    |
Dec 05 20:41:34.641 INFO [stderr] 33 |         io::stdout().flush();
Dec 05 20:41:34.641 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:34.641 INFO [stderr]    |
Dec 05 20:41:34.641 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:34.641 INFO [stderr] 
Dec 05 20:41:34.641 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:34.641 INFO [stderr]   --> src/main.rs:35:9
Dec 05 20:41:34.641 INFO [stderr]    |
Dec 05 20:41:34.641 INFO [stderr] 35 |         io::stdin().read_line(&mut choice);
Dec 05 20:41:34.642 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:34.642 INFO [stderr]    |
Dec 05 20:41:34.642 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:34.642 INFO [stderr] 
Dec 05 20:41:34.642 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:34.642 INFO [stderr]   --> src/main.rs:50:17
Dec 05 20:41:34.642 INFO [stderr]    |
Dec 05 20:41:34.642 INFO [stderr] 50 |                 io::stdout().flush();
Dec 05 20:41:34.642 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:34.642 INFO [stderr]    |
Dec 05 20:41:34.642 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:34.642 INFO [stderr] 
Dec 05 20:41:34.642 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:34.642 INFO [stderr]   --> src/main.rs:51:17
Dec 05 20:41:34.642 INFO [stderr]    |
Dec 05 20:41:34.642 INFO [stderr] 51 |                 io::stdin().read_line(&mut sender);
Dec 05 20:41:34.642 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:34.642 INFO [stderr]    |
Dec 05 20:41:34.642 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:34.642 INFO [stderr] 
Dec 05 20:41:34.642 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:34.642 INFO [stderr]   --> src/main.rs:53:17
Dec 05 20:41:34.642 INFO [stderr]    |
Dec 05 20:41:34.642 INFO [stderr] 53 |                 io::stdout().flush();
Dec 05 20:41:34.642 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:34.642 INFO [stderr]    |
Dec 05 20:41:34.642 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:34.642 INFO [stderr] 
Dec 05 20:41:34.642 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:34.642 INFO [stderr]   --> src/main.rs:54:17
Dec 05 20:41:34.642 INFO [stderr]    |
Dec 05 20:41:34.642 INFO [stderr] 54 |                 io::stdin().read_line(&mut receiver);
Dec 05 20:41:34.642 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:34.642 INFO [stderr]    |
Dec 05 20:41:34.642 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:34.642 INFO [stderr] 
Dec 05 20:41:34.642 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:34.642 INFO [stderr]   --> src/main.rs:56:17
Dec 05 20:41:34.642 INFO [stderr]    |
Dec 05 20:41:34.642 INFO [stderr] 56 |                 io::stdout().flush();
Dec 05 20:41:34.642 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:34.642 INFO [stderr]    |
Dec 05 20:41:34.642 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:34.642 INFO [stderr] 
Dec 05 20:41:34.642 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:34.642 INFO [stderr]   --> src/main.rs:57:17
Dec 05 20:41:34.643 INFO [stderr]    |
Dec 05 20:41:34.643 INFO [stderr] 57 |                 io::stdin().read_line(&mut amount);
Dec 05 20:41:34.643 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:34.643 INFO [stderr]    |
Dec 05 20:41:34.643 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:34.643 INFO [stderr] 
Dec 05 20:41:34.643 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:34.643 INFO [stderr]   --> src/main.rs:81:17
Dec 05 20:41:34.643 INFO [stderr]    |
Dec 05 20:41:34.643 INFO [stderr] 81 |                 io::stdout().flush();
Dec 05 20:41:34.643 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:34.643 INFO [stderr]    |
Dec 05 20:41:34.643 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:34.643 INFO [stderr] 
Dec 05 20:41:34.643 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:34.643 INFO [stderr]   --> src/main.rs:82:17
Dec 05 20:41:34.643 INFO [stderr]    |
Dec 05 20:41:34.643 INFO [stderr] 82 |                 io::stdin().read_line(&mut new_diff);
Dec 05 20:41:34.643 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:34.643 INFO [stderr]    |
Dec 05 20:41:34.643 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:34.643 INFO [stderr] 
Dec 05 20:41:34.643 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:34.643 INFO [stderr]   --> src/main.rs:92:17
Dec 05 20:41:34.643 INFO [stderr]    |
Dec 05 20:41:34.643 INFO [stderr] 92 |                 io::stdout().flush();
Dec 05 20:41:34.643 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:34.643 INFO [stderr]    |
Dec 05 20:41:34.643 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:34.643 INFO [stderr] 
Dec 05 20:41:34.643 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 20:41:34.643 INFO [stderr]   --> src/main.rs:93:17
Dec 05 20:41:34.643 INFO [stderr]    |
Dec 05 20:41:34.643 INFO [stderr] 93 |                 io::stdin().read_line(&mut new_reward);
Dec 05 20:41:34.643 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 20:41:34.643 INFO [stderr]    |
Dec 05 20:41:34.643 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 20:41:34.643 INFO [stderr] 
Dec 05 20:41:34.977 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.39s
Dec 05 20:41:34.982 INFO [stderr] su: No module specific data is present
Dec 05 20:41:35.696 INFO running `"docker" "inspect" "0e34b6fe0c1c0aa5f70f050bfa8a7503f701eb8581b7f428878157a8af69d5d2"`
Dec 05 20:41:36.018 INFO running `"docker" "rm" "-f" "0e34b6fe0c1c0aa5f70f050bfa8a7503f701eb8581b7f428878157a8af69d5d2"`
Dec 05 20:41:36.352 INFO [stdout] 0e34b6fe0c1c0aa5f70f050bfa8a7503f701eb8581b7f428878157a8af69d5d2
Dec 05 20:41:36.354 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-3/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 05 20:41:36.858 INFO [stdout] a053158790acf32f2828d5bf8bd41846f4f9b7ff6f9d9659e9120c5cfb710fff
Dec 05 20:41:36.860 INFO running `"docker" "start" "-a" "a053158790acf32f2828d5bf8bd41846f4f9b7ff6f9d9659e9120c5cfb710fff"`
Dec 05 20:41:38.980 INFO [stderr] usermod: no changes
Dec 05 20:41:39.152 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.13s
Dec 05 20:41:39.152 INFO [stderr]      Running /target/debug/deps/tinychain-c1d3b909c48b0592
Dec 05 20:41:39.160 INFO [stdout] 
Dec 05 20:41:39.160 INFO [stdout] running 0 tests
Dec 05 20:41:39.160 INFO [stdout] 
Dec 05 20:41:39.160 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 20:41:39.160 INFO [stdout] 
Dec 05 20:41:39.161 INFO [stderr] su: No module specific data is present
Dec 05 20:41:40.014 INFO running `"docker" "inspect" "a053158790acf32f2828d5bf8bd41846f4f9b7ff6f9d9659e9120c5cfb710fff"`
Dec 05 20:41:40.304 INFO running `"docker" "rm" "-f" "a053158790acf32f2828d5bf8bd41846f4f9b7ff6f9d9659e9120c5cfb710fff"`
Dec 05 20:41:40.572 INFO [stdout] a053158790acf32f2828d5bf8bd41846f4f9b7ff6f9d9659e9120c5cfb710fff