Dec 13 21:02:18.794 INFO testing dowoncha/blockchain against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 21:02:18.794 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 13 21:02:19.397 INFO [stdout] dadfb4c6a6f5aeec46f63773c052525362d30773b2a8a16432801d618d438ada
Dec 13 21:02:19.399 INFO running `"docker" "start" "-a" "dadfb4c6a6f5aeec46f63773c052525362d30773b2a8a16432801d618d438ada"`
Dec 13 21:02:20.623 INFO [stderr] usermod: no changes
Dec 13 21:02:20.719 INFO [stderr]    Compiling blockchain v0.1.0 (/source)
Dec 13 21:02:21.491 INFO [stderr] warning: method is never used: `blocks`
Dec 13 21:02:21.491 INFO [stderr]   --> src/main.rs:82:5
Dec 13 21:02:21.491 INFO [stderr]    |
Dec 13 21:02:21.491 INFO [stderr] 82 |     pub fn blocks(&self) -> &[Block] {
Dec 13 21:02:21.491 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:02:21.491 INFO [stderr]    |
Dec 13 21:02:21.491 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 13 21:02:21.491 INFO [stderr] 
Dec 13 21:02:21.507 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:02:21.507 INFO [stderr]    --> src/main.rs:131:13
Dec 13 21:02:21.507 INFO [stderr]     |
Dec 13 21:02:21.507 INFO [stderr] 131 |             writeln!(f, "Block {} Hash: {}", index, block.hash());
Dec 13 21:02:21.507 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:02:21.507 INFO [stderr]     |
Dec 13 21:02:21.507 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 13 21:02:21.507 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:02:21.507 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 13 21:02:21.507 INFO [stderr] 
Dec 13 21:02:22.423 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.78s
Dec 13 21:02:22.431 INFO [stderr] su: No module specific data is present
Dec 13 21:02:23.232 INFO running `"docker" "inspect" "dadfb4c6a6f5aeec46f63773c052525362d30773b2a8a16432801d618d438ada"`
Dec 13 21:02:23.581 INFO running `"docker" "rm" "-f" "dadfb4c6a6f5aeec46f63773c052525362d30773b2a8a16432801d618d438ada"`
Dec 13 21:02:23.867 INFO [stdout] dadfb4c6a6f5aeec46f63773c052525362d30773b2a8a16432801d618d438ada
Dec 13 21:02:23.873 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 13 21:02:24.427 INFO [stdout] 031f8391f28d5791bd77670cc7bed85d11d8b4d6ba8f97d96368c3cf80fab028
Dec 13 21:02:24.429 INFO running `"docker" "start" "-a" "031f8391f28d5791bd77670cc7bed85d11d8b4d6ba8f97d96368c3cf80fab028"`
Dec 13 21:02:26.713 INFO [stderr] usermod: no changes
Dec 13 21:02:26.775 INFO [stderr]    Compiling blockchain v0.1.0 (/source)
Dec 13 21:02:27.503 INFO [stderr] warning: method is never used: `blocks`
Dec 13 21:02:27.503 INFO [stderr]   --> src/main.rs:82:5
Dec 13 21:02:27.503 INFO [stderr]    |
Dec 13 21:02:27.503 INFO [stderr] 82 |     pub fn blocks(&self) -> &[Block] {
Dec 13 21:02:27.503 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:02:27.503 INFO [stderr]    |
Dec 13 21:02:27.503 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 13 21:02:27.503 INFO [stderr] 
Dec 13 21:02:27.509 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:02:27.509 INFO [stderr]    --> src/main.rs:131:13
Dec 13 21:02:27.509 INFO [stderr]     |
Dec 13 21:02:27.509 INFO [stderr] 131 |             writeln!(f, "Block {} Hash: {}", index, block.hash());
Dec 13 21:02:27.509 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 21:02:27.509 INFO [stderr]     |
Dec 13 21:02:27.509 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 13 21:02:27.509 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:02:27.509 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 13 21:02:27.509 INFO [stderr] 
Dec 13 21:02:27.871 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
Dec 13 21:02:27.871 INFO [stderr] su: No module specific data is present
Dec 13 21:02:28.563 INFO running `"docker" "inspect" "031f8391f28d5791bd77670cc7bed85d11d8b4d6ba8f97d96368c3cf80fab028"`
Dec 13 21:02:28.757 INFO running `"docker" "rm" "-f" "031f8391f28d5791bd77670cc7bed85d11d8b4d6ba8f97d96368c3cf80fab028"`
Dec 13 21:02:28.935 INFO [stdout] 031f8391f28d5791bd77670cc7bed85d11d8b4d6ba8f97d96368c3cf80fab028
Dec 13 21:02:28.938 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 13 21:02:29.393 INFO [stdout] 0c991d45d51348fdab7a97af2a57c936255bcabd02164f3a5f2bfa6cbdf0ab6c
Dec 13 21:02:29.397 INFO running `"docker" "start" "-a" "0c991d45d51348fdab7a97af2a57c936255bcabd02164f3a5f2bfa6cbdf0ab6c"`
Dec 13 21:02:30.535 INFO [stderr] usermod: no changes
Dec 13 21:02:30.634 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
Dec 13 21:02:30.634 INFO [stderr]      Running /target/debug/deps/blockchain-7d1ee0efa94b74fc
Dec 13 21:02:30.639 INFO [stdout] 
Dec 13 21:02:30.639 INFO [stdout] running 0 tests
Dec 13 21:02:30.639 INFO [stdout] 
Dec 13 21:02:30.639 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 21:02:30.639 INFO [stdout] 
Dec 13 21:02:30.642 INFO [stderr] su: No module specific data is present
Dec 13 21:02:31.445 INFO running `"docker" "inspect" "0c991d45d51348fdab7a97af2a57c936255bcabd02164f3a5f2bfa6cbdf0ab6c"`
Dec 13 21:02:31.757 INFO running `"docker" "rm" "-f" "0c991d45d51348fdab7a97af2a57c936255bcabd02164f3a5f2bfa6cbdf0ab6c"`
Dec 13 21:02:31.995 INFO [stdout] 0c991d45d51348fdab7a97af2a57c936255bcabd02164f3a5f2bfa6cbdf0ab6c