[INFO] updating cached repository dan-f/blockchain
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dan-f/blockchain
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dan-f/blockchain" "work/ex/beta-1.37-6/sources/1.36.0/gh/dan-f/blockchain"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/dan-f/blockchain'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dan-f/blockchain" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dan-f/blockchain"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dan-f/blockchain'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4d86b044e1da1625b51e69c1564b6c388c9c8834
[INFO] sha for GitHub repo dan-f/blockchain: 4d86b044e1da1625b51e69c1564b6c388c9c8834
[INFO] validating manifest of dan-f/blockchain on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dan-f/blockchain on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dan-f/blockchain
[INFO] finished frobbing dan-f/blockchain
[INFO] frobbed toml for dan-f/blockchain written to work/ex/beta-1.37-6/sources/1.36.0/gh/dan-f/blockchain/Cargo.toml
[INFO] started frobbing dan-f/blockchain
[INFO] finished frobbing dan-f/blockchain
[INFO] frobbed toml for dan-f/blockchain written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dan-f/blockchain/Cargo.toml
[INFO] crate dan-f/blockchain already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing dan-f/blockchain against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dan-f/blockchain:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 64f944ff2baf50c819eb1e235d21c06d938905f1c18366d7184f5b59c2e204ec
[INFO] running `"docker" "start" "-a" "64f944ff2baf50c819eb1e235d21c06d938905f1c18366d7184f5b59c2e204ec"`
[INFO] [stderr]    Compiling openssl v0.10.10
[INFO] [stderr]    Compiling openssl-sys v0.9.33
[INFO] [stderr]    Compiling crypto-hash v0.3.1
[INFO] [stderr]    Compiling blockchain v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.83s
[INFO] running `"docker" "inspect" "64f944ff2baf50c819eb1e235d21c06d938905f1c18366d7184f5b59c2e204ec"`
[INFO] running `"docker" "rm" "-f" "64f944ff2baf50c819eb1e235d21c06d938905f1c18366d7184f5b59c2e204ec"`
[INFO] [stdout] 64f944ff2baf50c819eb1e235d21c06d938905f1c18366d7184f5b59c2e204ec
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dan-f/blockchain:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 3bccef780cac8cdce1dcc6810f7fd6ef0639cc7a8a40ed3ca52052cdcc7d599f
[INFO] running `"docker" "start" "-a" "3bccef780cac8cdce1dcc6810f7fd6ef0639cc7a8a40ed3ca52052cdcc7d599f"`
[INFO] [stderr]    Compiling blockchain v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.24s
[INFO] running `"docker" "inspect" "3bccef780cac8cdce1dcc6810f7fd6ef0639cc7a8a40ed3ca52052cdcc7d599f"`
[INFO] running `"docker" "rm" "-f" "3bccef780cac8cdce1dcc6810f7fd6ef0639cc7a8a40ed3ca52052cdcc7d599f"`
[INFO] [stdout] 3bccef780cac8cdce1dcc6810f7fd6ef0639cc7a8a40ed3ca52052cdcc7d599f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dan-f/blockchain:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] bdeb8023798da05269b4b46709e8b2d0c6ac77b5c66c690585ba1a22041e3db7
[INFO] running `"docker" "start" "-a" "bdeb8023798da05269b4b46709e8b2d0c6ac77b5c66c690585ba1a22041e3db7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/blockchain-2d333d16a407389c
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test block::tests::it_constructs_a_genesis_block ... ok
[INFO] [stdout] test list::tests::list_can_branch ... ok
[INFO] [stdout] test list::tests::list_has_a_length ... ok
[INFO] [stdout] test blockchain::tests::blockchain_will_not_add_block_with_wrong_prev_hash ... ok
[INFO] [stdout] test blockchain::tests::new_blockchain_uses_genesis_block ... ok
[INFO] [stdout] test blockchain::tests::blockchain_will_not_add_block_with_unacceptable_proof_of_work ... ok
[INFO] [stdout] test list::tests::new_list_is_empty ... ok
[INFO] [stdout] test list::tests::list_is_a_stack ... ok
[INFO] [stdout] test blockchain::tests::blockchain_can_add_block ... ok
[INFO] [stdout] test blockchain::tests::blockchain_can_mine_block ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests blockchain
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "bdeb8023798da05269b4b46709e8b2d0c6ac77b5c66c690585ba1a22041e3db7"`
[INFO] running `"docker" "rm" "-f" "bdeb8023798da05269b4b46709e8b2d0c6ac77b5c66c690585ba1a22041e3db7"`
[INFO] [stdout] bdeb8023798da05269b4b46709e8b2d0c6ac77b5c66c690585ba1a22041e3db7