Zebra v1.0.0-alpha.7

Zebra's latest alpha continues our work on NU5/Orchard, and fixes some security and protocol correctness issues.

Zebra now has best-effort support for Apple M1 builds, and logging to systemd-journald.

Added

Network Upgrade 5

• Implement Sapling serialization in Transaction V5 (#1996, #2017, #2020, #2021, #2057)
• Draft RFC: Treestate management (#983)

Configuration and Logging

• Stop requiring a port for Zcash listener addresses (#2043)
  • use the default port if there is no configured port
• Add journald support through tracing-journald (#2034)
  • Zebra does not have any journald integration tests, so we will support it on a best-effort basis

Testing and Bug Reports

• Benchmark Block struct serialization code (#2018)
• Add the new commit count and git hash to the version in bug reports (#2038)
• Add branch, commit time, and build target to the panic metadata (#2028)
• Automatically update app version from crate version (#2028)

Changed

Supported Platforms and Dependencies

• Update dependencies to support Apple M1 (#2026)
  • Zebra does not have any Apple M1 CI, so we will support it on a best-effort basis
• Bump ripemd160 from 0.8.0 to 0.9.1 and remove trait import (#2027)
• Update to vergen 5 (#2029)

Refactors and Cleanups

• Refactor and document correctness for std::sync::Mutex in ErrorSlot (#2032)
• Refactor and document correctness for std::sync::Mutex (#2033)
• Make Zcash string serialization consistent with deserialization (#2053)
• clippy: make to_* methods take self by value (#2006)

Testing

• Speedup proptests for Chain struct in zebra-state (#2012)

Fixed

• Stop assuming there will always be a .git directory during builds (#2037)
• Clarify CandidateSet state diagram (#2036)

Network Protocol

• Stop panicking when Zebra sends a reject without extra data (#2016)
• Switch to an async mutex for handshake nonces (#2031)

Testing and Logging

• Fix a test failure due to ' debug format changes in Rust (#2014)
• Fix Windows CI LLVM paths (#2026)
• Clarify a duplicate log message (#2054)

Security

Network

• Avoid a single peer providing a majority of Zebra's peer addresses (#2004)
• Make sure handshake version negotiation always has a timeout (#2008)
• Make sure each peer heartbeat has a timeout (#2009)

Memory Usage

• Implement vector deserialisation limits for new Transaction::V5 types (#1996)