Dec 04 21:15:26.831 INFO checking carlosgj94/simple_blockchain against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 21:15:26.831 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-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 04 21:15:27.423 INFO [stdout] fe7ff68b92e6b84c15e2dc9ab04b24871a929a53c67803587c1f46842cc3cc98
Dec 04 21:15:27.431 INFO running `"docker" "start" "-a" "fe7ff68b92e6b84c15e2dc9ab04b24871a929a53c67803587c1f46842cc3cc98"`
Dec 04 21:15:28.895 INFO [stderr] usermod: no changes
Dec 04 21:15:28.983 INFO [stderr]    Compiling rust-crypto v0.2.36
Dec 04 21:15:35.397 INFO [stderr]     Checking simple_blockchain v0.1.0 (/source)
Dec 04 21:15:36.291 INFO [stderr] warning: value assigned to `hash` is never read
Dec 04 21:15:36.291 INFO [stderr]   --> src/main.rs:73:13
Dec 04 21:15:36.291 INFO [stderr]    |
Dec 04 21:15:36.291 INFO [stderr] 73 |     let mut hash = String::new();
Dec 04 21:15:36.291 INFO [stderr]    |             ^^^^
Dec 04 21:15:36.291 INFO [stderr]    |
Dec 04 21:15:36.291 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 04 21:15:36.291 INFO [stderr] 
Dec 04 21:15:36.359 INFO [stderr] warning: function is never used: `is_valid_new_block`
Dec 04 21:15:36.359 INFO [stderr]    --> src/main.rs:104:1
Dec 04 21:15:36.359 INFO [stderr]     |
Dec 04 21:15:36.359 INFO [stderr] 104 | fn is_valid_new_block(n_block: Block, p_block: Block) -> bool {
Dec 04 21:15:36.359 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:15:36.359 INFO [stderr]     |
Dec 04 21:15:36.359 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 04 21:15:36.359 INFO [stderr] 
Dec 04 21:15:36.619 INFO [stderr] warning: value assigned to `hash` is never read
Dec 04 21:15:36.619 INFO [stderr]   --> src/main.rs:73:13
Dec 04 21:15:36.619 INFO [stderr]    |
Dec 04 21:15:36.619 INFO [stderr] 73 |     let mut hash = String::new();
Dec 04 21:15:36.619 INFO [stderr]    |             ^^^^
Dec 04 21:15:36.619 INFO [stderr]    |
Dec 04 21:15:36.619 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 04 21:15:36.619 INFO [stderr] 
Dec 04 21:15:36.635 INFO [stderr] warning: function is never used: `is_valid_new_block`
Dec 04 21:15:36.635 INFO [stderr]    --> src/main.rs:104:1
Dec 04 21:15:36.635 INFO [stderr]     |
Dec 04 21:15:36.635 INFO [stderr] 104 | fn is_valid_new_block(n_block: Block, p_block: Block) -> bool {
Dec 04 21:15:36.635 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:15:36.635 INFO [stderr]     |
Dec 04 21:15:36.635 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 04 21:15:36.635 INFO [stderr] 
Dec 04 21:15:36.683 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.76s
Dec 04 21:15:36.683 INFO [stderr] su: No module specific data is present
Dec 04 21:15:37.264 INFO running `"docker" "inspect" "fe7ff68b92e6b84c15e2dc9ab04b24871a929a53c67803587c1f46842cc3cc98"`
Dec 04 21:15:37.489 INFO running `"docker" "rm" "-f" "fe7ff68b92e6b84c15e2dc9ab04b24871a929a53c67803587c1f46842cc3cc98"`
Dec 04 21:15:37.816 INFO [stdout] fe7ff68b92e6b84c15e2dc9ab04b24871a929a53c67803587c1f46842cc3cc98