Dec 18 02:43:34.268 INFO checking carlosgj94/simple_blockchain against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 02:43:34.268 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/carlosgj94/simple_blockchain:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 02:43:34.744 INFO [stdout] 057c0c2fc41e0a3f076221dff7dbf9ea59c437533142b7de8c3d1c47de65d177
Dec 18 02:43:34.750 INFO running `"docker" "start" "-a" "057c0c2fc41e0a3f076221dff7dbf9ea59c437533142b7de8c3d1c47de65d177"`
Dec 18 02:43:36.684 INFO [stderr]     Checking rust-crypto v0.2.36
Dec 18 02:43:41.868 INFO [stderr]     Checking simple_blockchain v0.1.0 (/opt/crater/workdir)
Dec 18 02:43:42.146 INFO [stderr] warning: value assigned to `hash` is never read
Dec 18 02:43:42.146 INFO [stderr]   --> src/main.rs:73:13
Dec 18 02:43:42.146 INFO [stderr]    |
Dec 18 02:43:42.146 INFO [stderr] 73 |     let mut hash = String::new();
Dec 18 02:43:42.146 INFO [stderr]    |             ^^^^
Dec 18 02:43:42.146 INFO [stderr]    |
Dec 18 02:43:42.146 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 18 02:43:42.146 INFO [stderr] 
Dec 18 02:43:42.168 INFO [stderr] warning: function is never used: `is_valid_new_block`
Dec 18 02:43:42.168 INFO [stderr]    --> src/main.rs:104:1
Dec 18 02:43:42.168 INFO [stderr]     |
Dec 18 02:43:42.168 INFO [stderr] 104 | fn is_valid_new_block(n_block: Block, p_block: Block) -> bool {
Dec 18 02:43:42.168 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 02:43:42.168 INFO [stderr]     |
Dec 18 02:43:42.168 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 18 02:43:42.168 INFO [stderr] 
Dec 18 02:43:42.283 INFO [stderr] warning: value assigned to `hash` is never read
Dec 18 02:43:42.283 INFO [stderr]   --> src/main.rs:73:13
Dec 18 02:43:42.283 INFO [stderr]    |
Dec 18 02:43:42.283 INFO [stderr] 73 |     let mut hash = String::new();
Dec 18 02:43:42.283 INFO [stderr]    |             ^^^^
Dec 18 02:43:42.283 INFO [stderr]    |
Dec 18 02:43:42.283 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 18 02:43:42.283 INFO [stderr] 
Dec 18 02:43:42.340 INFO [stderr] warning: function is never used: `is_valid_new_block`
Dec 18 02:43:42.341 INFO [stderr]    --> src/main.rs:104:1
Dec 18 02:43:42.341 INFO [stderr]     |
Dec 18 02:43:42.341 INFO [stderr] 104 | fn is_valid_new_block(n_block: Block, p_block: Block) -> bool {
Dec 18 02:43:42.341 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 02:43:42.341 INFO [stderr]     |
Dec 18 02:43:42.341 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 18 02:43:42.341 INFO [stderr] 
Dec 18 02:43:42.389 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.81s
Dec 18 02:43:42.906 INFO running `"docker" "inspect" "057c0c2fc41e0a3f076221dff7dbf9ea59c437533142b7de8c3d1c47de65d177"`
Dec 18 02:43:43.206 INFO running `"docker" "rm" "-f" "057c0c2fc41e0a3f076221dff7dbf9ea59c437533142b7de8c3d1c47de65d177"`
Dec 18 02:43:43.368 INFO [stdout] 057c0c2fc41e0a3f076221dff7dbf9ea59c437533142b7de8c3d1c47de65d177