Module structure problem - single parent class, multiple child classes

9

I bet @traveller was mistakenly using mod foo; instead of use foo;.

error[E0583]: file not found for module `foo`
 --> src/main.rs:1:5
  |
1 | mod foo;
  |     ^^^
  |
  = help: name the file either foo.rs or foo/mod.rs inside the directory "src"

Perhaps another help: line would be in order?

help: to import the sibling module named `foo`, try `use crate::foo;`
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