Consider https://doc.rust-lang.org/std/primitive.u32.html. In the sidebar, scroll to "Trait Implementations" and you will see this (similar for many other traits, such as Add and Shl):

This is not so useful because you have to hover over each of them and check the URL to see what it is.

Maybe the for u32 or for &u32 part should be included in the hyperlink text if they'd otherwise be identical. Or maybe with a nested list so it fits more easily into the narrow sidebar:

• From<bool>
• From<char>
• From<u8>
• From<u32>
  • for AtomicU32
  • for Ipv4Addr
  • for f128
  • ...