Project-Zero | multifunctional Discord Bot made on discord.js-commando | Bot library

Cargo does not call any git binary. It internally uses the git2 crate, which binds libgit2.

The libgit2 that git2 binds to is included as a Git submodule and it currently points to version 1.0.0.

No, the "high-end" feature that matters on those ARM CPUs is out-of-order execution, with branch-prediction + speculative execution.

In-order CPUs with NEON (like Cortex A-53) aren't on the list of affected CPUs, because Spectre depends on speculative execution.

Spectre primes the branch predictors so an indirect branch in privileged code is mispredicted to go somewhere that causes a data-dependent change in micro-architectural state before the mispredict is detected.

In Meltdown you run instructions yourself in unprivileged code; Intel CPUs continue speculative execution after a load that should have faulted, using the TLB entry for a kernel-only page. The fault isn't taken until the load tries to retire (which you can even delay by running a separate slow dependency chain of instructions ahead of the faulting-load + use of that data, because instructions retire in order).

For more microarchitectural details about how Meltdown works, see Why are AMD processors not/less vulnerable to Meltdown? (and Spectre)?