1 Private modules cannot be publicly re-exported. This error indicates that you
2 attempted to `pub use` a module that was not itself public.
4 Erroneous code example:
16 The solution to this problem is to ensure that the module that you are
17 re-exporting is itself marked with `pub`:
29 See the 'Use Declarations' section of the reference for more information
32 https://doc.rust-lang.org/reference.html#use-declarations