Version is too old

examples/list_interfaces.rs

@@ -12,5 +12,5 @@
 fn main() {
  let ifaces = if_addrs::get_if_addrs().unwrap();
  println!("Got list of interfaces");
- println!("{ifaces:#?}");
+ println!("{:#?}", ifaces);
 }

src/lib.rs

@@ -528,7 +528,7 @@ mod tests {
  };
  let mut process = match start_cmd {
  Err(why) => {
- println!("couldn't start cmd {cmd} : {why}");
+ println!("couldn't start cmd {} : {}", cmd, why);
  return String::new();
  }
  Ok(process) => process,
@@ -597,7 +597,7 @@ mod tests {
  list_system_interfaces("ifconfig", "")
  .lines()
  .filter_map(|line| {
- println!("{line}");
+ println!("{}", line);
  if line.contains("inet ") {
  let addr_s: Vec<&str> = line.split_whitespace().collect();
  return Some(IpAddr::V4(Ipv4Addr::from_str(addr_s[1]).unwrap()));
@@ -611,7 +611,7 @@ mod tests {
  fn test_get_if_addrs() {
  let ifaces = get_if_addrs().unwrap();
  println!("Local interfaces:");
- println!("{ifaces:#?}");
+ println!("{:#?}", ifaces);
  // at least one loop back address
  assert!(
  1 <= ifaces
@@ -636,7 +636,7 @@ mod tests {
  assert!(!system_addrs.is_empty());
  for addr in system_addrs {
  let mut listed = false;
- println!("\n checking whether {addr:?} has been properly listed \n");
+ println!("\n checking whether {:?} has been properly listed \n", addr);
  for interface in &ifaces {
  if interface.addr.ip() == addr {
  listed = true;