We are constantly getting the message below from Cirrus CI;
> Machine type with name 'c2-standard-2' does not exist in zone 'us-central1-c'."
Seems Cirrus CI is constructing the machine type based on
the "cpu" field from the YAML file. However c2-standard's minimal vCPU
count is 4 based on the official document below.
https://cloud.google.com/compute/docs/compute-optimized-machines
Signed-off-by: Kazuyoshi Kato <katokazu@amazon.com>
"uname -a" includes its hostname, which could be
cirrus-task-6102504847966208, cirrus-task-6665454801387520, ...
This is unnecessary invalidating the cache.
Signed-off-by: Kazuyoshi Kato <katokazu@amazon.com>
Cirrus CI supports nested virtualization and free to use from open
source projects. runc has been using the service since
https://github.com/opencontainers/runc/pull/3088.
Signed-off-by: Kazuyoshi Kato <katokazu@amazon.com>
