Comment 19 for bug 1773118

I looked over the failures:

# snapcraft:
network related failures AFAICT in their integration tests, e.g.
```
/home/ubuntu/autopkgtest_tmp/tmpyiuc3lb5/parts/rust-subdir/rust/bin/cargo fetch --manifest-path /home/ubuntu/autopkgtest_tmp/tmpyiuc3lb5/parts/rust-subdir/src/Cargo.toml
Exited with code 101.
```
and
```
    Updating registry `https://github.com/rust-lang/crates.io-index`
error: could not execute process `rustc -vV` (never executed)

Caused by:
  No such file or directory (os error 2)
```

also some in:
```
Building dependency tree...
Reading state information...
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 linux-generic : Depends: linux-image-generic (= 4.15.0.26.28) but 4.15.0.24.26 is to be installed
```

I could not see anything that is snapd related.