I know, I'm late here, but things look ok here now.

zucca@NBLK-WAX9X ~ $ eshowkw dev-lang/rust
Keywords for dev-lang/rust:
             |                             |   u             |  
             | a   a     p s   a l   r     |   n             |  
             | m   r h   p p   l o m i s m | e u s           | r
             | d a m p p c a x p o i s 3 6 | a s l           | e
             | 6 r 6 p p 6 r 8 h n p c 9 8 | p e o           | p
             | 4 m 4 a c 4 c 6 a g s v 0 k | i d t           | o
-------------+-----------------------------+-----------------+-------
   1.71.1    | + + + o + + + + o ~ ~ ~ o o | 8 o stable/1.71 | gentoo
-------------+-----------------------------+-----------------+-------
   1.74.1    | + + + o + + + + o ~ o ~ o o | 8 o stable/1.74 | gentoo
-------------+-----------------------------+-----------------+-------
   1.75.0-r1 | + + + o + + + + o ~ o ~ o o | 8 o stable/1.75 | gentoo
-------------+-----------------------------+-----------------+-------
   1.77.1    | + + + o + + + + o ~ o ~ o o | 8 o stable/1.77 | gentoo
-------------+-----------------------------+-----------------+-------
   1.79.0    | + + + o + + + + o ~ ~ ~ o o | 8 o stable/1.79 | gentoo
-------------+-----------------------------+-----------------+-------
   1.80.1    | + + + o + + + + o ~ ~ ~ o o | 8 o stable/1.80 | gentoo
-------------+-----------------------------+-----------------+-------
[I]1.81.0    | + + + o ~ ~ ~ + o ~ ~ ~ o o | 8 o stable/1.81 | gentoo

The m68k looks sad. Although I don't have any m68k machines at the moment. I do hope mips will be kept as I have few mips devices - surveilance cameras and PoE wifi hotspots, all "ssh-able".