Ipnetwork mismatched types

[matteyeux]

Hi ! Since version 0.20.0 I fail to build my tool because there is a mismatch between IpNetwork types :

λ ~/dev/fail(main*) » cargo run
    Updating crates.io index
   Compiling fail v0.1.0 (/home/mathieu/dev/fail)
error[E0308]: mismatched types
 --> src/main.rs:8:17
  |
7 |             match ip {
  |                   -- this expression has type `ipnetwork::IpNetwork`
8 |                 IpNetwork::V4(ipv4) => {
  |                 ^^^^^^^^^^^^^^^^^^^ expected enum `ipnetwork::IpNetwork`, found enum `IpNetwork`
  |
  = note: perhaps two different versions of crate `ipnetwork` are being used?

error[E0308]: mismatched types
  --> src/main.rs:11:17
   |
7  |             match ip {
   |                   -- this expression has type `ipnetwork::IpNetwork`
...
11 |                 IpNetwork::V6(ipv6) => {
   |                 ^^^^^^^^^^^^^^^^^^^ expected enum `ipnetwork::IpNetwork`, found enum `IpNetwork`
   |
   = note: perhaps two different versions of crate `ipnetwork` are being used?

For more information about this error, try `rustc --explain E0308`.
error: could not compile `fail` due to 2 previous errors

Here is the snippet I try to build bellow :

use ipnetwork::IpNetwork;
use pnet_datalink;

fn main() {
    for iface in pnet_datalink::interfaces() {
        for ip in iface.ips {
            match ip {
                IpNetwork::V4(ipv4) => {
                    println!("ipv4 : {}", ipv4.ip());
                }
                IpNetwork::V6(ipv6) => {
                    println!("ipv6 : {}", ipv6.ip());
                }
            }
        }
    }
}

It also uses pnet_datalink, but I only updated ipnetwork, that's why I suspect the issue to be related to this repo (I'm new to Rust so I may be wrong).

Any idea how I can fix this problem ?

Thanks.

[paolobarbolini]

It also uses pnet_datalink, but I only update ipnetwork, that why I suspect the issue to be related to this repo

The issue is with the fact that you can't have types from a crate's version work with the same types from another version, even if type's structures are exactly equal. Make sure the versions match and it should all go back to working fine.

[matteyeux]

Oh that perfectly makes sense, I'll stay on 0.19.0 until ipnetwork version is bumped on libpnet.

thank you @paolobarbolini !