x/exp/slog: TestLogTextHandler fails due to malformed regexp

[toothrot]

--- FAIL: TestLogTextHandler (0.00s)
    logger_test.go:34: 
        got  time=2022-09-09T14:52:49.575Z level=INFO msg=msg a=1 b=2
        want ^time=\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}-\d{2}:\d{2} level=INFO msg=msg a=1 b=2$
    logger_test.go:37: 
        got  time=2022-09-09T14:52:49.575Z level=DEBUG msg=bg a=1 b=2
        want ^time=\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}-\d{2}:\d{2} level=DEBUG msg=bg a=1 b=2$
    logger_test.go:40: 
        got  time=2022-09-09T14:52:49.575Z level=WARN msg=w dur=3s
        want ^time=\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}-\d{2}:\d{2} level=WARN msg=w dur=3s$
    logger_test.go:43: 
        got  time=2022-09-09T14:52:49.575Z level=ERROR msg=bad a=1 err=EOF
        want ^time=\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}-\d{2}:\d{2} level=ERROR msg=bad a=1 err=EOF$
    logger_test.go:46: 
        got  time=2022-09-09T14:52:49.575Z level=WARN-1 msg=w a=1 b=two
        want ^time=\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}-\d{2}:\d{2} level=WARN-1 msg=w a=1 b=two$
    logger_test.go:49: 
        got  time=2022-09-09T14:52:49.575Z level=INFO-1 msg="a b c" a=1 b=two
        want ^time=\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}-\d{2}:\d{2} level=INFO-1 msg="a b c" a=1 b=two$
--- FAIL: TestConnections (0.00s)
    logger_test.go:66: 
        got  time=2022-09-09T14:52:49.575Z level=INFO msg=msg2
        want ^time=\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}-\d{2}:\d{2} level=INFO msg=msg2$
FAIL
FAIL	golang.org/x/exp/slog	0.022s

2022-09-09T14:51:30-3746e55-218294f/linux-amd64

[bcmills]

I believe this was fixed in CL 429836.