[PATCH proxmox v4 08/40] network-types: fqdn: implement standard library Error for Fqdn

[Christoph Heiss <c.heiss@proxmox.com>]

Greatly improves intercompatibility with e.g. anyhow, which relies on
this trait for automatic conversions.

Reviewed-by: Lukas Wagner <l.wagner@proxmox.com>
Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
---
Changes v3 -> v4:
  * no changes

Changes v2 -> v3:
  * new patch

 proxmox-network-types/src/fqdn.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/proxmox-network-types/src/fqdn.rs b/proxmox-network-types/src/fqdn.rs
index 24979601..44ab6538 100644
--- a/proxmox-network-types/src/fqdn.rs
+++ b/proxmox-network-types/src/fqdn.rs
@@ -31,6 +31,8 @@ impl fmt::Display for FqdnParseError {
     }
 }
 
+impl std::error::Error for FqdnParseError {}
+
 /// A type for safely representing fully-qualified domain names (FQDNs).
 ///
 /// It considers following RFCs:
-- 
2.53.0