warning: field `network` is never read
  --> testcontainers/src/core/containers/async_container.rs:36:5
   |
32 | pub struct ContainerAsync<I: Image> {
   |            -------------- field in this struct
...
36 |     network: Option<Arc<Network>>,
   |     ^^^^^^^
   |
   = note: `#[warn(dead_code)]` on by default

warning: variable does not need to be mutable
   --> testcontainers/src/core/containers/sync_container.rs:161:21
    |
161 |         if let Some(mut active) = self.inner.take() {
    |                     ----^^^^^^
    |                     |
    |                     help: remove this `mut`
    |
    = note: `#[warn(unused_mut)]` on by default