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Add minimal CI to build statically linked executables.

1 job for main in 22 seconds (queued for 6 seconds)
Status Name Job ID Coverage
  Test
failed build #151540

00:00:22

 
Name Stage Failure
failed
build Test

Caused by:
feature `edition2021` is required

The package requires the Cargo feature called `edition2021`, but that feature is not stabilized in this version of Cargo (1.55.0 (32da73ab1 2021-08-23)).
Consider trying a newer version of Cargo (this may require the nightly release).
See https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#edition-2021 for more information about the status of this feature.
Cleaning up file based variables
ERROR: Job failed: exit code 101