Dec 11 21:10:37.747 INFO checking carlosgj94/simple_blockchain against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 21:10:37.747 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 11 21:10:38.323 INFO [stdout] f17b91393d040529d1f2b4c3d40d03589f33ea4ba10e0802d4eb3bd86d59c566
Dec 11 21:10:38.325 INFO running `"docker" "start" "-a" "f17b91393d040529d1f2b4c3d40d03589f33ea4ba10e0802d4eb3bd86d59c566"`
Dec 11 21:10:40.595 INFO [stderr] usermod: no changes
Dec 11 21:10:40.724 INFO [stderr]    Compiling rust-crypto v0.2.36
Dec 11 21:10:47.736 INFO [stderr]     Checking simple_blockchain v0.1.0 (/source)
Dec 11 21:10:48.560 INFO [stderr] warning: value assigned to `hash` is never read
Dec 11 21:10:48.560 INFO [stderr]   --> src/main.rs:73:13
Dec 11 21:10:48.561 INFO [stderr]    |
Dec 11 21:10:48.561 INFO [stderr] 73 |     let mut hash = String::new();
Dec 11 21:10:48.561 INFO [stderr]    |             ^^^^
Dec 11 21:10:48.564 INFO [stderr]    |
Dec 11 21:10:48.564 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 11 21:10:48.564 INFO [stderr] 
Dec 11 21:10:48.598 INFO [stderr] warning: function is never used: `is_valid_new_block`
Dec 11 21:10:48.598 INFO [stderr]    --> src/main.rs:104:1
Dec 11 21:10:48.598 INFO [stderr]     |
Dec 11 21:10:48.598 INFO [stderr] 104 | fn is_valid_new_block(n_block: Block, p_block: Block) -> bool {
Dec 11 21:10:48.598 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 21:10:48.599 INFO [stderr]     |
Dec 11 21:10:48.599 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 11 21:10:48.599 INFO [stderr] 
Dec 11 21:10:48.647 INFO [stderr] warning: value assigned to `hash` is never read
Dec 11 21:10:48.647 INFO [stderr]   --> src/main.rs:73:13
Dec 11 21:10:48.647 INFO [stderr]    |
Dec 11 21:10:48.647 INFO [stderr] 73 |     let mut hash = String::new();
Dec 11 21:10:48.647 INFO [stderr]    |             ^^^^
Dec 11 21:10:48.647 INFO [stderr]    |
Dec 11 21:10:48.647 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 11 21:10:48.647 INFO [stderr] 
Dec 11 21:10:48.667 INFO [stderr] warning: function is never used: `is_valid_new_block`
Dec 11 21:10:48.668 INFO [stderr]    --> src/main.rs:104:1
Dec 11 21:10:48.668 INFO [stderr]     |
Dec 11 21:10:48.668 INFO [stderr] 104 | fn is_valid_new_block(n_block: Block, p_block: Block) -> bool {
Dec 11 21:10:48.668 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 21:10:48.668 INFO [stderr]     |
Dec 11 21:10:48.668 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 11 21:10:48.668 INFO [stderr] 
Dec 11 21:10:48.720 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.09s
Dec 11 21:10:48.729 INFO [stderr] su: No module specific data is present
Dec 11 21:10:49.666 INFO running `"docker" "inspect" "f17b91393d040529d1f2b4c3d40d03589f33ea4ba10e0802d4eb3bd86d59c566"`
Dec 11 21:10:50.033 INFO running `"docker" "rm" "-f" "f17b91393d040529d1f2b4c3d40d03589f33ea4ba10e0802d4eb3bd86d59c566"`
Dec 11 21:10:50.240 INFO [stdout] f17b91393d040529d1f2b4c3d40d03589f33ea4ba10e0802d4eb3bd86d59c566