tree a5a12d78cf5d1c54796fb41acbc3a75df74f5382
parent 307a2b19480482238d730c782291eea42176b66a
author Johnathan Van Why <jrvanwhy@google.com> 1612508551 -0800
committer Johnathan Van Why <jrvanwhy@google.com> 1612508551 -0800

Trim down the Mac OS CI to just a `cargo build` on libtock_runtime.

The Mac runner took over 1 hour 15 minutes to build QEMU (and it didn't even succeed), so I don't think running `make setup` on Mac OS is reasonable. Shrink its test to `cargo build -p libtock_runtime`, which should be relatively simple and test the most critical items.

In the future, we'll probably want to point it at a more substantial crate, but libtock_runtime is our best option for now.