Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
 ERROR
Running the tests in ‘tests/testthat.R’ failed.
Last 13 lines of output:
  * ``` sh
  * -- nothing to show --
  * ```
  * 
  * </details>
  Backtrace:
      ▆
   1. └─testthat::expect_match(out, "Traceback", all = FALSE) at test-reprex.R:79:3
   2.   └─testthat:::expect_match_(...)
  
  [ FAIL 3 | WARN 0 | SKIP 65 | PASS 60 ]
Output of the failure from Internal test suite, which is run in the %check phase