v6unix: disk test failed

[mengzhuo]

go version go1.21.0 linux/amd64

=== RUN   TestNewDisk
    disk_test.go:58: stat /: have #1 140775 0,0, want #1 140555 0,0
    disk_test.go:58: stat /.: have #1 140775 0,0, want #1 140555 0,0
    disk_test.go:58: stat /..: have #1 140775 0,0, want #1 140555 0,0
    disk_test.go:58: stat /dev: have #67 140775 0,0, want #2 140555 0,0
    disk_test.go:58: stat /dev/.: have #67 140775 0,0, want #2 140555 0,0
    disk_test.go:58: stat /dev/..: have #1 140775 0,0, want #1 140555 0,0
    disk_test.go:58: stat /dev/null: have #70 120666 1,0, want #3 120600 1,1
    disk_test.go:58: stat /dev/mem: have #69 120664 2,0, want #4 120600 2,1
    disk_test.go:58: stat /dev/kmem: have #68 120664 2,1, want #5 120600 2,2
    disk_test.go:54: stat /dev/tty: ENOENT
    disk_test.go:58: stat /dev/tty1: have #1310 120622 4,1, want #7 120600 3,1
    disk_test.go:58: stat /dev/tty2: have #1311 120622 4,2, want #8 120600 3,2
    disk_test.go:58: stat /dev/tty3: have #1312 120622 4,3, want #9 120600 3,3
    disk_test.go:54: stat /dev/tty4: ENOENT
    disk_test.go:54: stat /dev/tty5: ENOENT
    disk_test.go:54: stat /dev/tty6: ENOENT
    disk_test.go:54: stat /dev/tty7: ENOENT
    disk_test.go:58: stat /dev/tty8: have #71 120622 4,8, want #14 120600 3,8
--- FAIL: TestNewDisk (0.02s)
=== RUN   TestUnlink
--- PASS: TestUnlink (0.02s)
=== RUN   TestEcho
    disk_test.go:110: have stdout="" stderr=""
        want stdin="" stdout="hello world" stderr=""
--- FAIL: TestEcho (0.02s)
=== RUN   TestLs
    disk_test.go:115: ls
--- SKIP: TestLs (0.00s)
=== RUN   TestDate
    disk_test.go:154: have stdout="" stderr=""
        want stdin="" stdout="Thu Jan  1 19:00:00 EST 1970\n" stderr=""
--- FAIL: TestDate (0.02s)
=== RUN   TestShellDate
    disk_test.go:179: have stdout="" stderr=""
        want stdin="" stdout="# Thu Aug 14 22:04:50 EDT 1975\n# " stderr=""
--- FAIL: TestShellDate (0.02s)
FAIL
exit status 1
FAIL    rsc.io/unix/v6unix      0.089s