Use configurable rust toolchain version

Switches to use a configuration for selecting rust toochain version.

Bug: 344081365
Change-Id: Id1cadb6a69cdcc9c0ac4264a454f35d555cbde6b
1 file changed
tree: a342d9e1110a8bddd92db45e0f7883bd63eeebcd
  1. gbl/
  2. libxbc/
  3. vts/
  4. .gitignore
  5. BUILD
  6. LICENSE
  7. OWNERS