"value has been moved" error in array exercise

[palango]

Hi,
I was going through the exercises and came across the transpose example:

The transpose function takes its argument by value, but we haven’t covered ownership yet. Try printing a matrix after it has been transposed, to show the “value has been moved” error, as a preview of ownership and move semantics.

However, I cannot make this error appear, even with using the object multiple times. Any hints?
https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=0428131bcd42995b27f5fdd43ba2fbdc

[djmitche]

Huh, thanks for spotting that! The type of matrix is Copy, so this error does not appear. I wrote that, so I'm sorry :)

This text was in place to help students understand what that error message would mean, so that it doesn't occur is actually good. I'll take the paragraph out.

[djmitche]

#1547.

[mgeisler]

Thanks for reporting this!