current cross-compilation issues

[dionysius]

riscv:

  error: failed to run custom build command for `ring v0.16.20`
  
  Caused by:
    process didn't exit successfully: `/work/vaultwarden-1.27.0/target/release/build/ring-03adbee9b7db2dc2/build-script-build` (exit status: 101)
    --- stderr
    thread 'main' panicked at 'called `Option::unwrap()` on a `None` value', /root/.cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/ring-0.16.20/build.rs:358:10
    note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

• C (or Rust) fallback for all functions that work for all little-endian targets briansmith/ring#1455

armv7:

  error: failed to compile `vaultwarden v1.0.0 (/work/vaultwarden-1.27.0)`, intermediate artifacts can be found at `/work/vaultwarden-1.27.0/target`
  
  Caused by:
    failed to load source for dependency `multer`
  
  Caused by:
    Unable to update https://github.com/BlackDex/multer-rs?rev=477d16b7fa0f361b5c2a5ba18a5b28bec6d26a8a
  
  Caused by:
    failed to clone into: /root/.cargo/git/db/multer-rs-4345aff1a2cb4345aff1a2cb7639
  
  Caused by:
    could not read directory '/root/.cargo/git/db/multer-rs-4345aff1a2cb7639/refs': Value too large for defined data type; class=Os (2)

• Value too large for defined data type when cargo build on armv7 with qemu rust-lang/cargo#8719

aarch64:

error: could not compile `vaultwarden`
  
  Caused by:
    process didn't exit successfully: `rustc --crate-name vaultwarden --edition=2021 ... (signal: 9, SIGKILL: kill)
  error: failed to compile `vaultwarden v1.0.0 (/work/vaultwarden-1.27.0)`, intermediate artifacts can be found at `/work/vaultwarden-1.27.0/target`

• github runners probably killing job for taking too long (at ~3h run time). Once it ran through taking 5h30min (probably luck). A better and more efficient way is needed to offer cross compiled packages.