x509-cert: test sometimes freezes when reading zlint stdout

[dishmaker]

     Running tests/builder.rs (target/debug/deps/builder-c42694f58bf84285)

running 9 tests
test dynamic_signer ... ok
test certificate_request_attributes ... ok
test certificate_request ... ok
test async_builder ... ok
test leaf_certificate has been running for over 60 seconds
test pss_certificate has been running for over 60 seconds
test root_ca_certificate has been running for over 60 seconds
test root_ca_certificate_ecdsa has been running for over 60 seconds
test sub_ca_certificate has been running for over 60 seconds

[baloo]

Just curious, which version of zlint is that?

[dishmaker]

$ dnf search zlint --showduplicates 
...
 golang-github-zmap-zlint-3-0:3.5.0-6.fc41.x86_64: X.509 Certificate Linter focused on Web PKI standards and requirements

[baloo]

I'm running 3.6.4, and I would assume the output only grows as zlint adds tests. I'm not sure why that would get stuck for you then. I don't know what sets the stdout buffer sizes.