A 6 re-org does not mean a '51% attack' was successful. In that case, we'd see unbounded-depth re-orgs/no blocks mined by any other mining pool (assuming the adversary censors other mining pools, as this one does).

It does mean an adversary with a high amount of hash got "lucky" (or maybe they are just too rich?)

Go 1.25 release includes changes in toolchain, runtime, and libraries with no language changes affecting Go programs, maintaining the Go 1 promise of compatibility. The release introduces new features such as a lightweight execution trace, improved garbage collector, and new JSON implementation, while also fixing a compiler bug and improving performance in various areas.