Using module from lib.rs by doing use crate::module

Question

I'm trying to use, in client.rs, pub functions defined in parser_utilities.rs

project:

src/client.rs
src/lib.rs
src/parser_utilities.rs

client.rs:

use crate::parser_utilities::{parse_c_seq, parse_session};

lib.rs:

pub mod parser_utilities;

parser_utilities.rs:

pub fn parse_c_seq...
pub fn parse_session...

Error:

 --> src/client.rs:2:12
  |
2 | use crate::parser_utilities::{parse_c_seq, parse_session};
  |            ^^^^^^^^^^^^^^^^
  |            |
  |            unresolved import
  |            help: a similar path exists: `rtsp_client::parser_utilities`

I then try:

client.rs:

use rtsp_client::parser_utilities::{parse_c_seq, parse_session};

error[E0433]: failed to resolve: use of undeclared crate or module `rtsp_client`
 --> src/client.rs:2:5
  |
2 | use rtsp_client::parser_utilities::{parse_c_seq, parse_session};
  |     ^^^^^^^^^^^ use of undeclared crate or module `rtsp_client`

but my crate is called rtsp_client

I also tried crate::rtsp_client::parser_utilities

What is wrong? I should be able to access any pub module from lib.rs using use crate mod_name;