CI failure on circular buffer

[kahgoh]

One of the CI jobs has failed on the circular buffer exercise with the following:

 Summary for all V _test.v files: 1 passed, 1 total. Elapsed time: 298 ms, on 1 job. Comptime: 0 ms. Runtime: 296 ms.
Checking circular_buffer exercise...
---- Testing... ----------------------------------------------------------------
Error: temp/circular_buffer.v:20:20: error: cannot prepend `T` to `[]T`
   18 |         return error('Buffer is full')
   19 |     }
   20 |     b.content.prepend(value)
      |                       ~~~~~
   21 | }
   22 |
Error: temp/circular_buffer.v:36:20: error: cannot prepend `T` to `[]T`
   34 |     }
   35 | 
   36 |     b.content.prepend(value)
      |                       ~~~~~
   37 | }
   38 |
checker summary: 2 V errors, 0 V warnings, 0 V notices

[kahgoh]

After some further testing, I think this may be a bug in V as prepend seems broken (see vlang/v#25573).

[kahgoh]

Seems like they have fixed the issue, but the exercise is still failing in the CI. A more specific issue has been raised (vlang/v#25585).