Dec 11 19:29:22.651 INFO checking dowoncha/blockchain against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 19:29:22.651 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-5/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 19:29:23.092 INFO [stdout] c66d654a831e065e934a99457d042eadd5f1a567b1442f9aef7ec86d21fe8f46
Dec 11 19:29:23.094 INFO running `"docker" "start" "-a" "c66d654a831e065e934a99457d042eadd5f1a567b1442f9aef7ec86d21fe8f46"`
Dec 11 19:29:24.388 INFO [stderr] usermod: no changes
Dec 11 19:29:24.466 INFO [stderr]     Checking blockchain v0.1.0 (/source)
Dec 11 19:29:25.300 INFO [stderr] warning: method is never used: `blocks`
Dec 11 19:29:25.300 INFO [stderr]   --> src/main.rs:82:5
Dec 11 19:29:25.300 INFO [stderr]    |
Dec 11 19:29:25.300 INFO [stderr] 82 |     pub fn blocks(&self) -> &[Block] {
Dec 11 19:29:25.300 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:29:25.300 INFO [stderr]    |
Dec 11 19:29:25.300 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 19:29:25.300 INFO [stderr] 
Dec 11 19:29:25.308 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 19:29:25.308 INFO [stderr]    --> src/main.rs:131:13
Dec 11 19:29:25.308 INFO [stderr]     |
Dec 11 19:29:25.308 INFO [stderr] 131 |             writeln!(f, "Block {} Hash: {}", index, block.hash());
Dec 11 19:29:25.308 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:29:25.308 INFO [stderr]     |
Dec 11 19:29:25.308 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 19:29:25.308 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 19:29:25.308 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 11 19:29:25.308 INFO [stderr] 
Dec 11 19:29:25.724 INFO [stderr] warning: method is never used: `blocks`
Dec 11 19:29:25.724 INFO [stderr]   --> src/main.rs:82:5
Dec 11 19:29:25.724 INFO [stderr]    |
Dec 11 19:29:25.724 INFO [stderr] 82 |     pub fn blocks(&self) -> &[Block] {
Dec 11 19:29:25.724 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:29:25.724 INFO [stderr]    |
Dec 11 19:29:25.724 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 19:29:25.724 INFO [stderr] 
Dec 11 19:29:25.736 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 19:29:25.736 INFO [stderr]    --> src/main.rs:131:13
Dec 11 19:29:25.736 INFO [stderr]     |
Dec 11 19:29:25.736 INFO [stderr] 131 |             writeln!(f, "Block {} Hash: {}", index, block.hash());
Dec 11 19:29:25.736 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:29:25.736 INFO [stderr]     |
Dec 11 19:29:25.736 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 19:29:25.736 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 19:29:25.736 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 11 19:29:25.736 INFO [stderr] 
Dec 11 19:29:25.764 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.36s
Dec 11 19:29:25.769 INFO [stderr] su: No module specific data is present
Dec 11 19:29:26.834 INFO running `"docker" "inspect" "c66d654a831e065e934a99457d042eadd5f1a567b1442f9aef7ec86d21fe8f46"`
Dec 11 19:29:27.106 INFO running `"docker" "rm" "-f" "c66d654a831e065e934a99457d042eadd5f1a567b1442f9aef7ec86d21fe8f46"`
Dec 11 19:29:27.330 INFO [stdout] c66d654a831e065e934a99457d042eadd5f1a567b1442f9aef7ec86d21fe8f46