=== RUN   TestRace
==================
WARNING: DATA RACE
Read at 0x0000007f12a8 by goroutine 8:
  racesurvey/B_inbody.TestRace.func1()
      /tmp/racesurvey/B_inbody/b_test.go:13 +0x74

Previous write at 0x0000007f12a8 by goroutine 9:
  racesurvey/B_inbody.TestRace.func2()
      /tmp/racesurvey/B_inbody/b_test.go:14 +0x8c

Goroutine 8 (running) created at:
  racesurvey/B_inbody.TestRace()
      /tmp/racesurvey/B_inbody/b_test.go:13 +0xbe
  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 9 (finished) created at:
  racesurvey/B_inbody.TestRace()
      /tmp/racesurvey/B_inbody/b_test.go:14 +0x124
  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
==================
    testing.go:1712: race detected during execution of test
--- FAIL: TestRace (0.00s)
FAIL