Splitting a Vec of strings into Vec<Vec<String>>

Question

I am attempting to relearn data-science in rust.

I have a Vec<String> that includes a delimiter "|" and a new line "!end".

What I'd like to end up with is Vec<Vec<String>> that can be put into a 2D ND array.

I have this python Code:

file = open('somefile.dat')
lst = []
for line in file:
    lst += [line.split('|')]
    
df = pd.DataFrame(lst)
SAMV2FinalDataFrame = pd.DataFrame(lst,columns=column_names)

And i've recreated it here in rust:

fn lines_from_file(filename: impl AsRef<Path>) -> Vec<String> {
    let file = File::open(filename).expect("no such file");
    let buf = BufReader::new(file);
    buf.lines()
        .map(|l| l.expect("Could not parse line"))
        .collect()
}

fn main() {
    let lines = lines_from_file(".dat");
    let mut new_arr = vec![];
//Here i get a lines immitable borrow
    for line in lines{
        new_arr.push([*line.split("!end")]);
    }

// here i get expeected closure found str
let x = lines.split("!end");



let array = Array::from(lines)

what i have: ['1','1','1','end!','2','2','2','!end'] What i need: [['1','1','1'],['2','2','2']]

Edit: also why when i turbo fish does it make it disappear on Stack Overflow?