Package check result: ERROR

Check: tests, Result: ERROR
    Running ‘testthat.R’ [643s/281s]
  Running the tests in ‘tests/testthat.R’ failed.
  Complete output:
    > library(testthat)
    > library(igraph)
    
    Attaching package: 'igraph'
    
    The following object is masked from 'package:testthat':
    
        compare
    
    The following objects are masked from 'package:stats':
    
        decompose, spectrum
    
    The following object is masked from 'package:base':
    
        union
    
    > 
    > test_check("igraph")
    Starting 2 test processes
    
    
    Error in `private$handle_error()`:
    ! testthat subprocess exited in file `test-aaa-auto.R`
    Caused by error:
    ! R session crashed with exit code 1
    Backtrace:
         ▆
      1. └─testthat::test_check("igraph")
      2.   └─testthat::test_dir(...)
      3.     └─testthat:::test_files(...)
      4.       └─testthat:::test_files_parallel(...)
      5.         ├─withr::with_dir(...)
      6.         │ └─base::force(code)
      7.         ├─testthat::with_reporter(...)
      8.         │ └─base::tryCatch(...)
      9.         │   └─base (local) tryCatchList(expr, classes, parentenv, handlers)
     10.         │     └─base (local) tryCatchOne(expr, names, parentenv, handlers[[1L]])
     11.         │       └─base (local) doTryCatch(return(expr), name, parentenv, handler)
     12.         └─testthat:::parallel_event_loop_chunky(queue, reporters, ".")
     13.           └─queue$poll(Inf)
     14.             └─base::lapply(...)
     15.               └─testthat (local) FUN(X[[i]], ...)
     16.                 └─private$handle_error(msg, i)
     17.                   └─rlang::abort(...)
    Execution halted