Dec 05 19:46:08.761 INFO testing jk-gan/blockchain-rust against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 05 19:46:08.761 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-6/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt build --frozen" "-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 05 19:46:09.202 INFO [stdout] fd07b7d1a153ae84a992cc504a45bf873f6b207620ba1920b3ff33f262f60328
Dec 05 19:46:09.204 INFO running `"docker" "start" "-a" "fd07b7d1a153ae84a992cc504a45bf873f6b207620ba1920b3ff33f262f60328"`
Dec 05 19:46:10.056 INFO [stderr] usermod: no changes
Dec 05 19:46:10.203 INFO [stderr]    Compiling chrono v0.4.6
Dec 05 19:46:12.299 INFO [stderr]    Compiling blockchain v0.1.0 (/source)
Dec 05 19:46:12.872 INFO [stderr] warning: constant item is never used: `TARGER_BIT`
Dec 05 19:46:12.872 INFO [stderr]  --> src/proof_of_work.rs:5:1
Dec 05 19:46:12.872 INFO [stderr]   |
Dec 05 19:46:12.872 INFO [stderr] 5 | const TARGER_BIT: usize = 24;
Dec 05 19:46:12.872 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 19:46:12.872 INFO [stderr]   |
Dec 05 19:46:12.872 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 05 19:46:12.872 INFO [stderr] 
Dec 05 19:46:12.872 INFO [stderr] warning: struct is never constructed: `ProofOfWork`
Dec 05 19:46:12.872 INFO [stderr]  --> src/proof_of_work.rs:7:1
Dec 05 19:46:12.873 INFO [stderr]   |
Dec 05 19:46:12.873 INFO [stderr] 7 | struct ProofOfWork {
Dec 05 19:46:12.873 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^
Dec 05 19:46:12.873 INFO [stderr] 
Dec 05 19:46:12.873 INFO [stderr] warning: method is never used: `new`
Dec 05 19:46:12.873 INFO [stderr]   --> src/proof_of_work.rs:13:5
Dec 05 19:46:12.873 INFO [stderr]    |
Dec 05 19:46:12.873 INFO [stderr] 13 |     fn new(block: Block) -> Self {
Dec 05 19:46:12.873 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 19:46:12.873 INFO [stderr] 
Dec 05 19:46:13.318 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.24s
Dec 05 19:46:13.322 INFO [stderr] su: No module specific data is present
Dec 05 19:46:13.593 INFO running `"docker" "inspect" "fd07b7d1a153ae84a992cc504a45bf873f6b207620ba1920b3ff33f262f60328"`
Dec 05 19:46:13.670 INFO running `"docker" "rm" "-f" "fd07b7d1a153ae84a992cc504a45bf873f6b207620ba1920b3ff33f262f60328"`
Dec 05 19:46:13.725 INFO [stdout] fd07b7d1a153ae84a992cc504a45bf873f6b207620ba1920b3ff33f262f60328
Dec 05 19:46:13.728 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-6/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt test --frozen --no-run" "-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 05 19:46:13.879 INFO [stdout] cf8f7a4569af199df12f88856e14ec57882efeb8a26cdc52c5e38652100bd9ad
Dec 05 19:46:13.882 INFO running `"docker" "start" "-a" "cf8f7a4569af199df12f88856e14ec57882efeb8a26cdc52c5e38652100bd9ad"`
Dec 05 19:46:14.500 INFO [stderr] usermod: no changes
Dec 05 19:46:14.573 INFO [stderr]    Compiling blockchain v0.1.0 (/source)
Dec 05 19:46:15.220 INFO [stderr] warning: constant item is never used: `TARGER_BIT`
Dec 05 19:46:15.220 INFO [stderr]  --> src/proof_of_work.rs:5:1
Dec 05 19:46:15.220 INFO [stderr]   |
Dec 05 19:46:15.220 INFO [stderr] 5 | const TARGER_BIT: usize = 24;
Dec 05 19:46:15.220 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 19:46:15.220 INFO [stderr]   |
Dec 05 19:46:15.220 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 05 19:46:15.220 INFO [stderr] 
Dec 05 19:46:15.220 INFO [stderr] warning: struct is never constructed: `ProofOfWork`
Dec 05 19:46:15.220 INFO [stderr]  --> src/proof_of_work.rs:7:1
Dec 05 19:46:15.220 INFO [stderr]   |
Dec 05 19:46:15.220 INFO [stderr] 7 | struct ProofOfWork {
Dec 05 19:46:15.220 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^
Dec 05 19:46:15.220 INFO [stderr] 
Dec 05 19:46:15.220 INFO [stderr] warning: method is never used: `new`
Dec 05 19:46:15.220 INFO [stderr]   --> src/proof_of_work.rs:13:5
Dec 05 19:46:15.220 INFO [stderr]    |
Dec 05 19:46:15.220 INFO [stderr] 13 |     fn new(block: Block) -> Self {
Dec 05 19:46:15.220 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 19:46:15.220 INFO [stderr] 
Dec 05 19:46:15.477 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
Dec 05 19:46:15.480 INFO [stderr] su: No module specific data is present
Dec 05 19:46:15.786 INFO running `"docker" "inspect" "cf8f7a4569af199df12f88856e14ec57882efeb8a26cdc52c5e38652100bd9ad"`
Dec 05 19:46:15.864 INFO running `"docker" "rm" "-f" "cf8f7a4569af199df12f88856e14ec57882efeb8a26cdc52c5e38652100bd9ad"`
Dec 05 19:46:15.950 INFO [stdout] cf8f7a4569af199df12f88856e14ec57882efeb8a26cdc52c5e38652100bd9ad
Dec 05 19:46:15.952 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-6/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt test --frozen" "-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 05 19:46:16.193 INFO [stdout] f84f7c7060eee8665bcb8a20d1d428e521f1e17d6ffa29835a5e93537dc70ccf
Dec 05 19:46:16.199 INFO running `"docker" "start" "-a" "f84f7c7060eee8665bcb8a20d1d428e521f1e17d6ffa29835a5e93537dc70ccf"`
Dec 05 19:46:16.583 INFO [stderr] usermod: no changes
Dec 05 19:46:16.634 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
Dec 05 19:46:16.637 INFO [stderr]      Running /target/debug/deps/blockchain-577171ef69dd21b1
Dec 05 19:46:16.637 INFO [stdout] 
Dec 05 19:46:16.637 INFO [stdout] running 0 tests
Dec 05 19:46:16.637 INFO [stdout] 
Dec 05 19:46:16.637 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 19:46:16.637 INFO [stdout] 
Dec 05 19:46:16.639 INFO [stderr] su: No module specific data is present
Dec 05 19:46:16.859 INFO running `"docker" "inspect" "f84f7c7060eee8665bcb8a20d1d428e521f1e17d6ffa29835a5e93537dc70ccf"`
Dec 05 19:46:16.912 INFO running `"docker" "rm" "-f" "f84f7c7060eee8665bcb8a20d1d428e521f1e17d6ffa29835a5e93537dc70ccf"`
Dec 05 19:46:16.996 INFO [stdout] f84f7c7060eee8665bcb8a20d1d428e521f1e17d6ffa29835a5e93537dc70ccf