Running 'requireNamespaceTest.R' [4s/5s]
  Running 'testthat.R' [288s/207s]
Running the tests in 'tests/testthat.R' failed.
Complete output:
  > #  File tests/testthat.R in package ergm, part of the
  > #  Statnet suite of packages for network analysis, https://statnet.org .
  > #
  > #  This software is distributed under the GPL-3 license.  It is free,
  > #  open source, and has the attribution requirements (GPL Section 7) at
  > #  https://statnet.org/attribution .
  > #
  > #  Copyright 2003-2022 Statnet Commons
  > ################################################################################
  > library(testthat)
  > library(ergm)
  Loading required package: network
  
  'network' 1.17.2 (2022-05-20), part of the Statnet Project
  * 'news(package="network")' for changes since last version
  * 'citation("network")' for citation information
  * 'https://statnet.org' for help, support, and other information
  
  
  'ergm' 4.2.2 (2022-06-01), part of the Statnet Project
  * 'news(package="ergm")' for changes since last version
  * 'citation("ergm")' for citation information
  * 'https://statnet.org' for help, support, and other information
  
  'ergm' 4 is a major update that introduces some backwards-incompatible
  changes. Please type 'news(package="ergm")' for a list of major
  changes.
  
  > 
  > test_check("ergm")
  Starting 2 test processes
  [ FAIL 1 | WARN 14 | SKIP 1 | PASS 3417 ]
  
  == Skipped tests ===============================================================
  * empty test (1)
  
  == Failed tests ================================================================
  -- Error (test-nonident-test.R:18:3): Nonidentifiable model produces a warning. --
  Error in `solve.default(a, b * d, ...)`: system is computationally singular: reciprocal condition number = 1.96384e-16
  Backtrace:
       x
    1. +-testthat::capture_warnings(...) at test-nonident-test.R:18:2
    2. | \-base::withCallingHandlers(...)
    3. \-ergm::ergm(...)
    4.   \-ergm:::ergm.MCMLE(...)
    5.     \-ergm:::ergm.estimate(...)
    6.       \-ergm:::ergm.MCMCse(...)
    7.         \-ergm:::sandwich_ssolve(-H, cov.zbar)
    8.           +-ergm:::ssolve(A, t(ssolve(A, B, ...)), ...)
    9.           | +-base::solve(a, b * d, ...)
   10.           | \-base::solve.default(a, b * d, ...)
   11.           +-base::t(ssolve(A, B, ...))
   12.           \-ergm:::ssolve(A, B, ...)
   13.             +-base::solve(a, b * d, ...)
   14.             \-base::solve.default(a, b * d, ...)
  
  [ FAIL 1 | WARN 14 | SKIP 1 | PASS 3417 ]
  Error: Test failures
  Execution halted