Dec 17 12:50:21.373 INFO checking uma0317/Rust-BlockChain against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 12:50:21.373 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/uma0317/Rust-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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 12:50:21.666 INFO [stdout] c3c33ef19a22a60677c9a426f2a469df1c821ab760ce8eab30af7f34141b954a
Dec 17 12:50:21.672 INFO running `"docker" "start" "-a" "c3c33ef19a22a60677c9a426f2a469df1c821ab760ce8eab30af7f34141b954a"`
Dec 17 12:50:22.378 INFO [stderr]     Checking blockchain v0.1.0 (/opt/crater/workdir)
Dec 17 12:50:22.494 INFO [stderr] warning: unused import: `Block`
Dec 17 12:50:22.494 INFO [stderr]  --> src/main.rs:3:30
Dec 17 12:50:22.494 INFO [stderr]   |
Dec 17 12:50:22.494 INFO [stderr] 3 | use blockchain::{Blockchain, Block, Transaction};
Dec 17 12:50:22.494 INFO [stderr]   |                              ^^^^^
Dec 17 12:50:22.494 INFO [stderr]   |
Dec 17 12:50:22.494 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 12:50:22.494 INFO [stderr] 
Dec 17 12:50:22.496 INFO [stderr] warning: unused import: `Block`
Dec 17 12:50:22.496 INFO [stderr]  --> src/main.rs:3:30
Dec 17 12:50:22.497 INFO [stderr]   |
Dec 17 12:50:22.497 INFO [stderr] 3 | use blockchain::{Blockchain, Block, Transaction};
Dec 17 12:50:22.497 INFO [stderr]   |                              ^^^^^
Dec 17 12:50:22.497 INFO [stderr]   |
Dec 17 12:50:22.497 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 12:50:22.497 INFO [stderr] 
Dec 17 12:50:22.620 INFO [stderr] warning: method is never used: `is_chain_valid`
Dec 17 12:50:22.620 INFO [stderr]    --> src/blockchain.rs:164:5
Dec 17 12:50:22.620 INFO [stderr]     |
Dec 17 12:50:22.620 INFO [stderr] 164 |     fn is_chain_valid(&self) -> bool {
Dec 17 12:50:22.620 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 12:50:22.620 INFO [stderr]     |
Dec 17 12:50:22.620 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 17 12:50:22.620 INFO [stderr] 
Dec 17 12:50:22.624 INFO [stderr] warning: method is never used: `is_chain_valid`
Dec 17 12:50:22.624 INFO [stderr]    --> src/blockchain.rs:164:5
Dec 17 12:50:22.624 INFO [stderr]     |
Dec 17 12:50:22.624 INFO [stderr] 164 |     fn is_chain_valid(&self) -> bool {
Dec 17 12:50:22.624 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 12:50:22.624 INFO [stderr]     |
Dec 17 12:50:22.624 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 17 12:50:22.624 INFO [stderr] 
Dec 17 12:50:22.652 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
Dec 17 12:50:23.010 INFO running `"docker" "inspect" "c3c33ef19a22a60677c9a426f2a469df1c821ab760ce8eab30af7f34141b954a"`
Dec 17 12:50:23.093 INFO running `"docker" "rm" "-f" "c3c33ef19a22a60677c9a426f2a469df1c821ab760ce8eab30af7f34141b954a"`
Dec 17 12:50:23.183 INFO [stdout] c3c33ef19a22a60677c9a426f2a469df1c821ab760ce8eab30af7f34141b954a