Are these rims a death trap?

Hello, I'm new here* :)

I'm in the process of building my first bike relatively from scratch. It's a 650c track frame, which means I have to get wheels built for it. Finding rims is not easy, all I found so far are Mavic Open Pros, at least when it comes to modern rims.

I do have a pair of older 36 spoke rims, but I'm not sure whether they are ridable, because they have a number of issues (I'll attach pictures)

• Some of the eyelets have rust.
  
• One eyelets is missing
  
• One rim has a significant gap where it is connected.
  
• Someone obviously took a Dremel like tool to the rim, I assume to remove stuck spoke nipples. It seems like they hit the outside of the rim and left a mark.
  
  

Writing it out, the answer seems somewhat obvious, but I wanted to have an outside opinion.

The frame itself is nothing to write home about, low quality tubing and quite heavy for its size(just shy of 3kg with fork and headset, for a 48 cm t-t, 650c frame), so I am not too keen on dumping tons and tons of money into building it up. At the same time, rims are obviously one of the parts which are on the "should not fail" list within the top three, so buying a set of new rims will happen if it needs to be done.

Thanks in advance :)

*I've been lurking here for years, especially the bike porn (and anti-porn) thread.

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