Dec 04 07:53:44.898 INFO checking uma0317/Rust-BlockChain against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 07:53:44.898 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 07:53:45.432 INFO [stdout] e5adfe9114c87d1c536a54307f977e217ad399da99aac1119cb2a6df909ecca6
Dec 04 07:53:45.434 INFO running `"docker" "start" "-a" "e5adfe9114c87d1c536a54307f977e217ad399da99aac1119cb2a6df909ecca6"`
Dec 04 07:53:48.150 INFO [stderr] usermod: no changes
Dec 04 07:53:48.344 INFO [stderr]     Checking rand v0.3.22
Dec 04 07:53:48.363 INFO [stderr]     Checking chrono v0.4.2
Dec 04 07:53:48.803 INFO [stderr]     Checking rust-crypto v0.2.36
Dec 04 07:53:55.167 INFO [stderr]     Checking blockchain v0.1.0 (/source)
Dec 04 07:53:55.464 INFO [stderr] warning: unused import: `Block`
Dec 04 07:53:55.464 INFO [stderr]  --> src/main.rs:3:30
Dec 04 07:53:55.464 INFO [stderr]   |
Dec 04 07:53:55.464 INFO [stderr] 3 | use blockchain::{Blockchain, Block, Transaction};
Dec 04 07:53:55.464 INFO [stderr]   |                              ^^^^^
Dec 04 07:53:55.464 INFO [stderr]   |
Dec 04 07:53:55.464 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 07:53:55.464 INFO [stderr] 
Dec 04 07:53:55.515 INFO [stderr] warning: unused import: `Block`
Dec 04 07:53:55.515 INFO [stderr]  --> src/main.rs:3:30
Dec 04 07:53:55.515 INFO [stderr]   |
Dec 04 07:53:55.516 INFO [stderr] 3 | use blockchain::{Blockchain, Block, Transaction};
Dec 04 07:53:55.516 INFO [stderr]   |                              ^^^^^
Dec 04 07:53:55.516 INFO [stderr]   |
Dec 04 07:53:55.516 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 07:53:55.516 INFO [stderr] 
Dec 04 07:53:55.588 INFO [stderr] warning: method is never used: `is_chain_valid`
Dec 04 07:53:55.588 INFO [stderr]    --> src/blockchain.rs:164:5
Dec 04 07:53:55.588 INFO [stderr]     |
Dec 04 07:53:55.588 INFO [stderr] 164 |     fn is_chain_valid(&self) -> bool {
Dec 04 07:53:55.588 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 07:53:55.588 INFO [stderr]     |
Dec 04 07:53:55.590 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 04 07:53:55.590 INFO [stderr] 
Dec 04 07:53:55.711 INFO [stderr] warning: method is never used: `is_chain_valid`
Dec 04 07:53:55.711 INFO [stderr]    --> src/blockchain.rs:164:5
Dec 04 07:53:55.711 INFO [stderr]     |
Dec 04 07:53:55.711 INFO [stderr] 164 |     fn is_chain_valid(&self) -> bool {
Dec 04 07:53:55.711 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 07:53:55.711 INFO [stderr]     |
Dec 04 07:53:55.711 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 04 07:53:55.711 INFO [stderr] 
Dec 04 07:53:55.767 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.57s
Dec 04 07:53:55.767 INFO [stderr] su: No module specific data is present
Dec 04 07:53:56.620 INFO running `"docker" "inspect" "e5adfe9114c87d1c536a54307f977e217ad399da99aac1119cb2a6df909ecca6"`
Dec 04 07:53:56.893 INFO running `"docker" "rm" "-f" "e5adfe9114c87d1c536a54307f977e217ad399da99aac1119cb2a6df909ecca6"`
Dec 04 07:53:57.343 INFO [stdout] e5adfe9114c87d1c536a54307f977e217ad399da99aac1119cb2a6df909ecca6