Dec 04 07:53:43.847 INFO checking uma0317/Rust-BlockChain against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 07:53:43.847 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 07:53:44.287 INFO [stdout] 2ff169c61efa05f3453a5d0bdc9caa8ffa8971dbd6b6996d19e061b5059f0852
Dec 04 07:53:44.289 INFO running `"docker" "start" "-a" "2ff169c61efa05f3453a5d0bdc9caa8ffa8971dbd6b6996d19e061b5059f0852"`
Dec 04 07:53:45.899 INFO [stderr] usermod: no changes
Dec 04 07:53:46.019 INFO [stderr]    Compiling rust-crypto v0.2.36
Dec 04 07:53:46.019 INFO [stderr]     Checking time v0.1.40
Dec 04 07:53:46.027 INFO [stderr]     Checking rand v0.3.22
Dec 04 07:53:47.844 INFO [stderr]     Checking chrono v0.4.2
Dec 04 07:53:54.612 INFO [stderr]     Checking blockchain v0.1.0 (/source)
Dec 04 07:53:54.971 INFO [stderr] warning: unused import: `Block`
Dec 04 07:53:54.971 INFO [stderr]  --> src/main.rs:3:30
Dec 04 07:53:54.971 INFO [stderr]   |
Dec 04 07:53:54.971 INFO [stderr] 3 | use blockchain::{Blockchain, Block, Transaction};
Dec 04 07:53:54.971 INFO [stderr]   |                              ^^^^^
Dec 04 07:53:54.971 INFO [stderr]   |
Dec 04 07:53:54.971 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 07:53:54.971 INFO [stderr] 
Dec 04 07:53:54.983 INFO [stderr] warning: unused import: `Block`
Dec 04 07:53:54.983 INFO [stderr]  --> src/main.rs:3:30
Dec 04 07:53:54.983 INFO [stderr]   |
Dec 04 07:53:54.983 INFO [stderr] 3 | use blockchain::{Blockchain, Block, Transaction};
Dec 04 07:53:54.983 INFO [stderr]   |                              ^^^^^
Dec 04 07:53:54.983 INFO [stderr]   |
Dec 04 07:53:54.983 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 07:53:54.983 INFO [stderr] 
Dec 04 07:53:55.111 INFO [stderr] warning: method is never used: `is_chain_valid`
Dec 04 07:53:55.111 INFO [stderr]    --> src/blockchain.rs:164:5
Dec 04 07:53:55.111 INFO [stderr]     |
Dec 04 07:53:55.111 INFO [stderr] 164 |     fn is_chain_valid(&self) -> bool {
Dec 04 07:53:55.111 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 07:53:55.111 INFO [stderr]     |
Dec 04 07:53:55.111 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 04 07:53:55.111 INFO [stderr] 
Dec 04 07:53:55.199 INFO [stderr] warning: method is never used: `is_chain_valid`
Dec 04 07:53:55.199 INFO [stderr]    --> src/blockchain.rs:164:5
Dec 04 07:53:55.199 INFO [stderr]     |
Dec 04 07:53:55.199 INFO [stderr] 164 |     fn is_chain_valid(&self) -> bool {
Dec 04 07:53:55.199 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 07:53:55.199 INFO [stderr]     |
Dec 04 07:53:55.199 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 04 07:53:55.199 INFO [stderr] 
Dec 04 07:53:55.243 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.31s
Dec 04 07:53:55.247 INFO [stderr] su: No module specific data is present
Dec 04 07:53:56.055 INFO running `"docker" "inspect" "2ff169c61efa05f3453a5d0bdc9caa8ffa8971dbd6b6996d19e061b5059f0852"`
Dec 04 07:53:56.323 INFO running `"docker" "rm" "-f" "2ff169c61efa05f3453a5d0bdc9caa8ffa8971dbd6b6996d19e061b5059f0852"`
Dec 04 07:53:56.621 INFO [stdout] 2ff169c61efa05f3453a5d0bdc9caa8ffa8971dbd6b6996d19e061b5059f0852