Dec 11 16:18:37.828 INFO checking jk-gan/blockchain-rust against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 16:18:37.828 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 16:18:38.115 INFO [stdout] 83a3fbd47451c87180e74872af4bfdd6fdf2780f83643b146c9392e9bdb0c460
Dec 11 16:18:38.117 INFO running `"docker" "start" "-a" "83a3fbd47451c87180e74872af4bfdd6fdf2780f83643b146c9392e9bdb0c460"`
Dec 11 16:18:39.651 INFO [stderr] usermod: no changes
Dec 11 16:18:39.800 INFO [stderr]     Checking chrono v0.4.6
Dec 11 16:18:39.820 INFO [stderr]     Checking num v0.2.0
Dec 11 16:18:42.132 INFO [stderr]     Checking blockchain v0.1.0 (/source)
Dec 11 16:18:43.045 INFO [stderr] warning: constant item is never used: `TARGER_BIT`
Dec 11 16:18:43.045 INFO [stderr]  --> src/proof_of_work.rs:5:1
Dec 11 16:18:43.045 INFO [stderr]   |
Dec 11 16:18:43.045 INFO [stderr] 5 | const TARGER_BIT: usize = 24;
Dec 11 16:18:43.045 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 16:18:43.045 INFO [stderr]   |
Dec 11 16:18:43.045 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 11 16:18:43.045 INFO [stderr] 
Dec 11 16:18:43.045 INFO [stderr] warning: struct is never constructed: `ProofOfWork`
Dec 11 16:18:43.045 INFO [stderr]  --> src/proof_of_work.rs:7:1
Dec 11 16:18:43.045 INFO [stderr]   |
Dec 11 16:18:43.045 INFO [stderr] 7 | struct ProofOfWork {
Dec 11 16:18:43.045 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^
Dec 11 16:18:43.045 INFO [stderr] 
Dec 11 16:18:43.045 INFO [stderr] warning: method is never used: `new`
Dec 11 16:18:43.045 INFO [stderr]   --> src/proof_of_work.rs:13:5
Dec 11 16:18:43.045 INFO [stderr]    |
Dec 11 16:18:43.045 INFO [stderr] 13 |     fn new(block: Block) -> Self {
Dec 11 16:18:43.045 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 16:18:43.045 INFO [stderr] 
Dec 11 16:18:43.045 INFO [stderr] warning: constant item is never used: `TARGER_BIT`
Dec 11 16:18:43.045 INFO [stderr]  --> src/proof_of_work.rs:5:1
Dec 11 16:18:43.045 INFO [stderr]   |
Dec 11 16:18:43.045 INFO [stderr] 5 | const TARGER_BIT: usize = 24;
Dec 11 16:18:43.045 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 16:18:43.045 INFO [stderr]   |
Dec 11 16:18:43.045 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 11 16:18:43.045 INFO [stderr] 
Dec 11 16:18:43.045 INFO [stderr] warning: struct is never constructed: `ProofOfWork`
Dec 11 16:18:43.045 INFO [stderr]  --> src/proof_of_work.rs:7:1
Dec 11 16:18:43.045 INFO [stderr]   |
Dec 11 16:18:43.045 INFO [stderr] 7 | struct ProofOfWork {
Dec 11 16:18:43.045 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^
Dec 11 16:18:43.045 INFO [stderr] 
Dec 11 16:18:43.045 INFO [stderr] warning: method is never used: `new`
Dec 11 16:18:43.045 INFO [stderr]   --> src/proof_of_work.rs:13:5
Dec 11 16:18:43.045 INFO [stderr]    |
Dec 11 16:18:43.045 INFO [stderr] 13 |     fn new(block: Block) -> Self {
Dec 11 16:18:43.045 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 16:18:43.045 INFO [stderr] 
Dec 11 16:18:43.057 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.37s
Dec 11 16:18:43.057 INFO [stderr] su: No module specific data is present
Dec 11 16:18:43.402 INFO running `"docker" "inspect" "83a3fbd47451c87180e74872af4bfdd6fdf2780f83643b146c9392e9bdb0c460"`
Dec 11 16:18:43.570 INFO running `"docker" "rm" "-f" "83a3fbd47451c87180e74872af4bfdd6fdf2780f83643b146c9392e9bdb0c460"`
Dec 11 16:18:43.769 INFO [stdout] 83a3fbd47451c87180e74872af4bfdd6fdf2780f83643b146c9392e9bdb0c460