Nov 16 21:24:25.159 INFO testing lezwon/Blockchain-from-Scratch against try#2e026d6e5d7621634147ad4c8074f1d964dbb1be for pr-55982
Nov 16 21:24:25.159 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-3/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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 16 21:24:25.675 INFO [stdout] 22e71b0fc0731214a7d2ea8ce1d2f1a191b8dc7bdc7dfadfc9a6f7ee8b93a2c8
Nov 16 21:24:25.683 INFO running `"docker" "start" "-a" "22e71b0fc0731214a7d2ea8ce1d2f1a191b8dc7bdc7dfadfc9a6f7ee8b93a2c8"`
Nov 16 21:24:26.815 INFO [stderr] usermod: no changes
Nov 16 21:24:26.948 INFO [stderr]    Compiling blockchain-rust v0.1.0 (/source)
Nov 16 21:24:27.915 INFO [stderr] warning: variable does not need to be mutable
Nov 16 21:24:27.919 INFO [stderr]   --> src/main.rs:94:8
Nov 16 21:24:27.919 INFO [stderr]    |
Nov 16 21:24:27.919 INFO [stderr] 94 |             let mut block_header = BlockHeader{
Nov 16 21:24:27.919 INFO [stderr]    |                 ----^^^^^^^^^^^^
Nov 16 21:24:27.919 INFO [stderr]    |                 |
Nov 16 21:24:27.919 INFO [stderr]    |                 help: remove this `mut`
Nov 16 21:24:27.919 INFO [stderr]    |
Nov 16 21:24:27.919 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 16 21:24:27.919 INFO [stderr] 
Nov 16 21:24:27.934 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:27.934 INFO [stderr]    --> src/main.rs:210:2
Nov 16 21:24:27.934 INFO [stderr]     |
Nov 16 21:24:27.934 INFO [stderr] 210 |     io::stdout().flush();
Nov 16 21:24:27.934 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:27.934 INFO [stderr]     |
Nov 16 21:24:27.934 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 16 21:24:27.934 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:27.934 INFO [stderr] 
Nov 16 21:24:27.934 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:27.934 INFO [stderr]    --> src/main.rs:211:2
Nov 16 21:24:27.934 INFO [stderr]     |
Nov 16 21:24:27.934 INFO [stderr] 211 |     io::stdin().read_line(&mut miner_address);
Nov 16 21:24:27.934 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:27.934 INFO [stderr]     |
Nov 16 21:24:27.934 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:27.934 INFO [stderr] 
Nov 16 21:24:27.934 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:27.934 INFO [stderr]    --> src/main.rs:213:2
Nov 16 21:24:27.934 INFO [stderr]     |
Nov 16 21:24:27.934 INFO [stderr] 213 |     io::stdout().flush();
Nov 16 21:24:27.934 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:27.934 INFO [stderr]     |
Nov 16 21:24:27.934 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:27.934 INFO [stderr] 
Nov 16 21:24:27.934 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:27.934 INFO [stderr]    --> src/main.rs:214:2
Nov 16 21:24:27.934 INFO [stderr]     |
Nov 16 21:24:27.934 INFO [stderr] 214 |     io::stdin().read_line(&mut difficulty_string);
Nov 16 21:24:27.934 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:27.934 INFO [stderr]     |
Nov 16 21:24:27.934 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:27.934 INFO [stderr] 
Nov 16 21:24:27.934 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:27.934 INFO [stderr]    --> src/main.rs:229:3
Nov 16 21:24:27.934 INFO [stderr]     |
Nov 16 21:24:27.934 INFO [stderr] 229 |         io::stdout().flush();
Nov 16 21:24:27.934 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:27.934 INFO [stderr]     |
Nov 16 21:24:27.934 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:27.934 INFO [stderr] 
Nov 16 21:24:27.934 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:27.934 INFO [stderr]    --> src/main.rs:231:3
Nov 16 21:24:27.934 INFO [stderr]     |
Nov 16 21:24:27.934 INFO [stderr] 231 |         io::stdin().read_line(&mut choice);
Nov 16 21:24:27.934 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:27.934 INFO [stderr]     |
Nov 16 21:24:27.934 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:27.934 INFO [stderr] 
Nov 16 21:24:27.934 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:27.934 INFO [stderr]    --> src/main.rs:247:5
Nov 16 21:24:27.934 INFO [stderr]     |
Nov 16 21:24:27.934 INFO [stderr] 247 |                 io::stdout().flush();
Nov 16 21:24:27.934 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:27.934 INFO [stderr]     |
Nov 16 21:24:27.934 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:27.934 INFO [stderr] 
Nov 16 21:24:27.934 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:27.934 INFO [stderr]    --> src/main.rs:248:5
Nov 16 21:24:27.934 INFO [stderr]     |
Nov 16 21:24:27.934 INFO [stderr] 248 |                 io::stdin().read_line(&mut sender);
Nov 16 21:24:27.934 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:27.934 INFO [stderr]     |
Nov 16 21:24:27.945 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:27.945 INFO [stderr] 
Nov 16 21:24:27.945 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:27.945 INFO [stderr]    --> src/main.rs:250:5
Nov 16 21:24:27.945 INFO [stderr]     |
Nov 16 21:24:27.945 INFO [stderr] 250 |                 io::stdout().flush();
Nov 16 21:24:27.945 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:27.945 INFO [stderr]     |
Nov 16 21:24:27.945 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:27.945 INFO [stderr] 
Nov 16 21:24:27.945 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:27.945 INFO [stderr]    --> src/main.rs:251:5
Nov 16 21:24:27.945 INFO [stderr]     |
Nov 16 21:24:27.945 INFO [stderr] 251 |                 io::stdin().read_line(&mut recipient);
Nov 16 21:24:27.945 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:27.945 INFO [stderr]     |
Nov 16 21:24:27.945 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:27.945 INFO [stderr] 
Nov 16 21:24:27.945 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:27.945 INFO [stderr]    --> src/main.rs:253:5
Nov 16 21:24:27.945 INFO [stderr]     |
Nov 16 21:24:27.946 INFO [stderr] 253 |                 io::stdout().flush();
Nov 16 21:24:27.946 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:27.946 INFO [stderr]     |
Nov 16 21:24:27.946 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:27.946 INFO [stderr] 
Nov 16 21:24:27.946 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:27.946 INFO [stderr]    --> src/main.rs:254:5
Nov 16 21:24:27.946 INFO [stderr]     |
Nov 16 21:24:27.946 INFO [stderr] 254 |                 io::stdin().read_line(&mut amount);
Nov 16 21:24:27.946 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:27.946 INFO [stderr]     |
Nov 16 21:24:27.946 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:27.946 INFO [stderr] 
Nov 16 21:24:27.946 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:27.946 INFO [stderr]    --> src/main.rs:274:5
Nov 16 21:24:27.946 INFO [stderr]     |
Nov 16 21:24:27.946 INFO [stderr] 274 |                 io::stdout().flush();
Nov 16 21:24:27.946 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:27.946 INFO [stderr]     |
Nov 16 21:24:27.946 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:27.946 INFO [stderr] 
Nov 16 21:24:27.946 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:27.946 INFO [stderr]    --> src/main.rs:275:5
Nov 16 21:24:27.946 INFO [stderr]     |
Nov 16 21:24:27.946 INFO [stderr] 275 |                 io::stdin().read_line(&mut new_difficulty);
Nov 16 21:24:27.946 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:27.946 INFO [stderr]     |
Nov 16 21:24:27.946 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:27.946 INFO [stderr] 
Nov 16 21:24:27.946 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:27.946 INFO [stderr]    --> src/main.rs:286:5
Nov 16 21:24:27.946 INFO [stderr]     |
Nov 16 21:24:27.946 INFO [stderr] 286 |                 io::stdout().flush();
Nov 16 21:24:27.946 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:27.946 INFO [stderr]     |
Nov 16 21:24:27.946 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:27.946 INFO [stderr] 
Nov 16 21:24:27.946 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:27.946 INFO [stderr]    --> src/main.rs:287:5
Nov 16 21:24:27.946 INFO [stderr]     |
Nov 16 21:24:27.946 INFO [stderr] 287 |                 io::stdin().read_line(&mut new_reward);
Nov 16 21:24:27.946 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:27.946 INFO [stderr]     |
Nov 16 21:24:27.946 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:27.946 INFO [stderr] 
Nov 16 21:24:29.224 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.38s
Nov 16 21:24:29.229 INFO [stderr] su: No module specific data is present
Nov 16 21:24:29.915 INFO running `"docker" "inspect" "22e71b0fc0731214a7d2ea8ce1d2f1a191b8dc7bdc7dfadfc9a6f7ee8b93a2c8"`
Nov 16 21:24:30.169 INFO running `"docker" "rm" "-f" "22e71b0fc0731214a7d2ea8ce1d2f1a191b8dc7bdc7dfadfc9a6f7ee8b93a2c8"`
Nov 16 21:24:30.547 INFO [stdout] 22e71b0fc0731214a7d2ea8ce1d2f1a191b8dc7bdc7dfadfc9a6f7ee8b93a2c8
Nov 16 21:24:30.552 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-3/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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 16 21:24:31.030 INFO [stdout] 4b399f79282214ee9a267c87e489ab3644792b2225b2cbf5228b9cb509958a8d
Nov 16 21:24:31.032 INFO running `"docker" "start" "-a" "4b399f79282214ee9a267c87e489ab3644792b2225b2cbf5228b9cb509958a8d"`
Nov 16 21:24:32.151 INFO [stderr] usermod: no changes
Nov 16 21:24:32.272 INFO [stderr]    Compiling blockchain-rust v0.1.0 (/source)
Nov 16 21:24:32.965 INFO [stderr] warning: variable does not need to be mutable
Nov 16 21:24:32.965 INFO [stderr]   --> src/main.rs:94:8
Nov 16 21:24:32.965 INFO [stderr]    |
Nov 16 21:24:32.966 INFO [stderr] 94 |             let mut block_header = BlockHeader{
Nov 16 21:24:32.966 INFO [stderr]    |                 ----^^^^^^^^^^^^
Nov 16 21:24:32.966 INFO [stderr]    |                 |
Nov 16 21:24:32.966 INFO [stderr]    |                 help: remove this `mut`
Nov 16 21:24:32.966 INFO [stderr]    |
Nov 16 21:24:32.966 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 16 21:24:32.966 INFO [stderr] 
Nov 16 21:24:32.988 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:32.988 INFO [stderr]    --> src/main.rs:210:2
Nov 16 21:24:32.988 INFO [stderr]     |
Nov 16 21:24:32.989 INFO [stderr] 210 |     io::stdout().flush();
Nov 16 21:24:32.989 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:32.989 INFO [stderr]     |
Nov 16 21:24:32.990 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 16 21:24:32.990 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:32.990 INFO [stderr] 
Nov 16 21:24:32.991 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:32.991 INFO [stderr]    --> src/main.rs:211:2
Nov 16 21:24:32.991 INFO [stderr]     |
Nov 16 21:24:32.992 INFO [stderr] 211 |     io::stdin().read_line(&mut miner_address);
Nov 16 21:24:32.992 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:32.992 INFO [stderr]     |
Nov 16 21:24:32.993 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:32.993 INFO [stderr] 
Nov 16 21:24:32.993 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:32.993 INFO [stderr]    --> src/main.rs:213:2
Nov 16 21:24:32.994 INFO [stderr]     |
Nov 16 21:24:32.994 INFO [stderr] 213 |     io::stdout().flush();
Nov 16 21:24:32.994 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:32.994 INFO [stderr]     |
Nov 16 21:24:32.995 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:32.996 INFO [stderr] 
Nov 16 21:24:32.996 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:32.996 INFO [stderr]    --> src/main.rs:214:2
Nov 16 21:24:32.996 INFO [stderr]     |
Nov 16 21:24:32.996 INFO [stderr] 214 |     io::stdin().read_line(&mut difficulty_string);
Nov 16 21:24:32.996 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:32.996 INFO [stderr]     |
Nov 16 21:24:32.996 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:32.996 INFO [stderr] 
Nov 16 21:24:32.996 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:32.996 INFO [stderr]    --> src/main.rs:229:3
Nov 16 21:24:32.996 INFO [stderr]     |
Nov 16 21:24:32.996 INFO [stderr] 229 |         io::stdout().flush();
Nov 16 21:24:32.996 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:32.996 INFO [stderr]     |
Nov 16 21:24:32.996 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:32.996 INFO [stderr] 
Nov 16 21:24:32.996 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:32.996 INFO [stderr]    --> src/main.rs:231:3
Nov 16 21:24:32.996 INFO [stderr]     |
Nov 16 21:24:32.996 INFO [stderr] 231 |         io::stdin().read_line(&mut choice);
Nov 16 21:24:32.996 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:32.996 INFO [stderr]     |
Nov 16 21:24:32.996 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:32.996 INFO [stderr] 
Nov 16 21:24:32.996 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:32.996 INFO [stderr]    --> src/main.rs:247:5
Nov 16 21:24:32.996 INFO [stderr]     |
Nov 16 21:24:32.996 INFO [stderr] 247 |                 io::stdout().flush();
Nov 16 21:24:32.996 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:32.996 INFO [stderr]     |
Nov 16 21:24:32.996 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:32.996 INFO [stderr] 
Nov 16 21:24:32.996 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:32.996 INFO [stderr]    --> src/main.rs:248:5
Nov 16 21:24:32.996 INFO [stderr]     |
Nov 16 21:24:32.996 INFO [stderr] 248 |                 io::stdin().read_line(&mut sender);
Nov 16 21:24:32.996 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:32.996 INFO [stderr]     |
Nov 16 21:24:32.996 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:32.996 INFO [stderr] 
Nov 16 21:24:32.996 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:32.996 INFO [stderr]    --> src/main.rs:250:5
Nov 16 21:24:32.996 INFO [stderr]     |
Nov 16 21:24:32.996 INFO [stderr] 250 |                 io::stdout().flush();
Nov 16 21:24:32.996 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:32.996 INFO [stderr]     |
Nov 16 21:24:32.996 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:32.997 INFO [stderr] 
Nov 16 21:24:32.997 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:32.997 INFO [stderr]    --> src/main.rs:251:5
Nov 16 21:24:32.997 INFO [stderr]     |
Nov 16 21:24:32.997 INFO [stderr] 251 |                 io::stdin().read_line(&mut recipient);
Nov 16 21:24:32.997 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:32.997 INFO [stderr]     |
Nov 16 21:24:32.997 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:32.997 INFO [stderr] 
Nov 16 21:24:32.997 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:32.997 INFO [stderr]    --> src/main.rs:253:5
Nov 16 21:24:32.997 INFO [stderr]     |
Nov 16 21:24:32.997 INFO [stderr] 253 |                 io::stdout().flush();
Nov 16 21:24:32.997 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:32.997 INFO [stderr]     |
Nov 16 21:24:32.997 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:32.997 INFO [stderr] 
Nov 16 21:24:32.997 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:32.997 INFO [stderr]    --> src/main.rs:254:5
Nov 16 21:24:32.997 INFO [stderr]     |
Nov 16 21:24:32.997 INFO [stderr] 254 |                 io::stdin().read_line(&mut amount);
Nov 16 21:24:32.997 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:32.997 INFO [stderr]     |
Nov 16 21:24:32.997 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:32.997 INFO [stderr] 
Nov 16 21:24:32.997 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:32.997 INFO [stderr]    --> src/main.rs:274:5
Nov 16 21:24:32.997 INFO [stderr]     |
Nov 16 21:24:32.997 INFO [stderr] 274 |                 io::stdout().flush();
Nov 16 21:24:32.997 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:32.997 INFO [stderr]     |
Nov 16 21:24:32.997 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:32.997 INFO [stderr] 
Nov 16 21:24:32.997 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:32.997 INFO [stderr]    --> src/main.rs:275:5
Nov 16 21:24:32.997 INFO [stderr]     |
Nov 16 21:24:32.997 INFO [stderr] 275 |                 io::stdin().read_line(&mut new_difficulty);
Nov 16 21:24:32.997 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:32.997 INFO [stderr]     |
Nov 16 21:24:32.997 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:32.997 INFO [stderr] 
Nov 16 21:24:32.997 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:32.997 INFO [stderr]    --> src/main.rs:286:5
Nov 16 21:24:32.997 INFO [stderr]     |
Nov 16 21:24:32.997 INFO [stderr] 286 |                 io::stdout().flush();
Nov 16 21:24:32.997 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:32.997 INFO [stderr]     |
Nov 16 21:24:32.997 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:32.997 INFO [stderr] 
Nov 16 21:24:32.997 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 21:24:32.997 INFO [stderr]    --> src/main.rs:287:5
Nov 16 21:24:32.997 INFO [stderr]     |
Nov 16 21:24:32.997 INFO [stderr] 287 |                 io::stdin().read_line(&mut new_reward);
Nov 16 21:24:32.997 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 21:24:32.997 INFO [stderr]     |
Nov 16 21:24:32.997 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 21:24:32.997 INFO [stderr] 
Nov 16 21:24:33.319 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
Nov 16 21:24:33.319 INFO [stderr] su: No module specific data is present
Nov 16 21:24:34.181 INFO running `"docker" "inspect" "4b399f79282214ee9a267c87e489ab3644792b2225b2cbf5228b9cb509958a8d"`
Nov 16 21:24:34.547 INFO running `"docker" "rm" "-f" "4b399f79282214ee9a267c87e489ab3644792b2225b2cbf5228b9cb509958a8d"`
Nov 16 21:24:34.959 INFO [stdout] 4b399f79282214ee9a267c87e489ab3644792b2225b2cbf5228b9cb509958a8d
Nov 16 21:24:34.962 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-3/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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 16 21:24:35.421 INFO [stdout] fd60d064fdbca00a3f7886291d8076b29d13ca36c6a453fd7016361e9e221adf
Nov 16 21:24:35.424 INFO running `"docker" "start" "-a" "fd60d064fdbca00a3f7886291d8076b29d13ca36c6a453fd7016361e9e221adf"`
Nov 16 21:24:36.831 INFO [stderr] usermod: no changes
Nov 16 21:24:36.916 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
Nov 16 21:24:36.924 INFO [stderr]      Running /target/debug/deps/blockchain_rust-d62678623941d0d8
Nov 16 21:24:36.924 INFO [stdout] 
Nov 16 21:24:36.924 INFO [stdout] running 0 tests
Nov 16 21:24:36.924 INFO [stdout] 
Nov 16 21:24:36.924 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 16 21:24:36.924 INFO [stdout] 
Nov 16 21:24:36.939 INFO [stderr] su: No module specific data is present
Nov 16 21:24:37.664 INFO running `"docker" "inspect" "fd60d064fdbca00a3f7886291d8076b29d13ca36c6a453fd7016361e9e221adf"`
Nov 16 21:24:37.982 INFO running `"docker" "rm" "-f" "fd60d064fdbca00a3f7886291d8076b29d13ca36c6a453fd7016361e9e221adf"`
Nov 16 21:24:38.343 INFO [stdout] fd60d064fdbca00a3f7886291d8076b29d13ca36c6a453fd7016361e9e221adf