=== RUN   TestParA
=== PAUSE TestParA
=== RUN   TestParB
=== PAUSE TestParB
=== CONT  TestParA
=== CONT  TestParB
--- PASS: TestParA (0.00s)
==================
WARNING: DATA RACE
Read at 0x0000007f02b0 by goroutine 8:
  racesurvey/F_parallel.TestParB()
      /tmp/racesurvey/F_parallel/f_test.go:17 +0x3b
  testing.tRunner()
      /home/ubuntu/sdk/go1.26.3/src/testing/testing.go:2036 +0x21c
  testing.(*T).Run.gowrap1()
      /home/ubuntu/sdk/go1.26.3/src/testing/testing.go:2101 +0x38

Previous write at 0x0000007f02b0 by goroutine 7:
  racesurvey/F_parallel.TestParA()
      /tmp/racesurvey/F_parallel/f_test.go:10 +0x53
  testing.tRunner()
      /home/ubuntu/sdk/go1.26.3/src/testing/testing.go:2036 +0x21c
  testing.(*T).Run.gowrap1()
      /home/ubuntu/sdk/go1.26.3/src/testing/testing.go:2101 +0x38

Goroutine 8 (running) created at:
  testing.(*T).Run()
      /home/ubuntu/sdk/go1.26.3/src/testing/testing.go:2101 +0xb12
  testing.runTests.func1()
      /home/ubuntu/sdk/go1.26.3/src/testing/testing.go:2585 +0x84
  testing.tRunner()
      /home/ubuntu/sdk/go1.26.3/src/testing/testing.go:2036 +0x21c
  testing.runTests()
      /home/ubuntu/sdk/go1.26.3/src/testing/testing.go:2583 +0x9e9
  testing.(*M).Run()
      /home/ubuntu/sdk/go1.26.3/src/testing/testing.go:2443 +0xf4b
  main.main()
      _testmain.go:48 +0x164

Goroutine 7 (running) created at:
  testing.(*T).Run()
      /home/ubuntu/sdk/go1.26.3/src/testing/testing.go:2101 +0xb12
  testing.runTests.func1()
      /home/ubuntu/sdk/go1.26.3/src/testing/testing.go:2585 +0x84
  testing.tRunner()
      /home/ubuntu/sdk/go1.26.3/src/testing/testing.go:2036 +0x21c
  testing.runTests()
      /home/ubuntu/sdk/go1.26.3/src/testing/testing.go:2583 +0x9e9
  testing.(*M).Run()
      /home/ubuntu/sdk/go1.26.3/src/testing/testing.go:2443 +0xf4b
  main.main()
      _testmain.go:48 +0x164
==================
=== NAME  TestParB
    testing.go:1712: race detected during execution of test
--- FAIL: TestParB (0.00s)
FAIL