fn check_zcashd_binary(
summary: &mut PreflightSummary,
requirements: &mut Vec<WriteRequirement>,
zcashd_compat_config: &Config,
state_cache_dir: &Path,
)fn check_zcashd_binary(
summary: &mut PreflightSummary,
requirements: &mut Vec<WriteRequirement>,
zcashd_compat_config: &Config,
state_cache_dir: &Path,
)