Running git annex test with the current master (9a3b050) shows nine failures (on my end and on the CI runs at https://github.com/datalad/datalad-extensions). These failures bisect to 75aab72d2 (mostly done with location log precaching, 2020-07-13).

I've tried to extract the failing tests below, adding horizontal separators for readability.

    unannex (no copy):                                    [adjusted/master(unlocked) 0acf147] empty
adjust ok
unannex foo cp: cannot stat '.git/annex/objects/Kj/0x/SHA256E-s20--e394a389d787383843decc5d3d99b6d184ffa5fddeec23b911f9ee7fc8b9ea77/SHA256E-s20--e394a389d787383843decc5d3d99b6d184ffa5fddeec23b911f9ee7fc8b9ea77': No such file or directory

git-annex: foo: getFileStatus: does not exist (No such file or directory)
failed
git-annex: unannex: 1 failed
FAIL (0.48s)
      Test.hs:504:
      unannex failed with no copy

----------------------------------------------------

    unannex (with copy):                                  [adjusted/master(unlocked) 0acf147] empty
adjust ok
get foo (from origin...) 

100%  20 B              7 KiB/s 0s

(checksum...) ok
(recording state in git...)
unannex foo ok
unannex sha1foo cp: cannot stat '.git/annex/objects/3j/xV/SHA1-s25--ee80d2cec57a3810db83b80e1b320df3a3721ffa/SHA1-s25--ee80d2cec57a3810db83b80e1b320df3a3721ffa': No such file or directory

git-annex: sha1foo: getFileStatus: does not exist (No such file or directory)
failed
git-annex: unannex: 1 failed
FAIL (0.63s)
      Test.hs:511:
      unannex failed

----------------------------------------------------

    fsck (basics):                                        [adjusted/master(unlocked) 8d7e450] empty
adjust ok
(recording state in git...)
numcopies 2 ok
(recording state in git...)
FAIL (0.40s)
      Test.hs:862:
      fsck failed to fail with numcopies unsatisfied

----------------------------------------------------

    unannex (no copy):                                    unannex foo cp: cannot stat '.git/annex/objects/Kj/0x/SHA256E-s20--e394a389d787383843decc5d3d99b6d184ffa5fddeec23b911f9ee7fc8b9ea77/SHA256E-s20--e394a389d787383843decc5d3d99b6d184ffa5fddeec23b911f9ee7fc8b9ea77': No such file or directory

git-annex: foo: getFileStatus: does not exist (No such file or directory)
failed
git-annex: unannex: 1 failed
FAIL (0.32s)
      Test.hs:504:
      unannex failed with no copy

----------------------------------------------------

    unannex (with copy):                                  get foo (from origin...) 

100%  20 B              7 KiB/s 0s

(checksum...) ok
(recording state in git...)
unannex foo ok
unannex sha1foo cp: cannot stat '.git/annex/objects/3j/xV/SHA1-s25--ee80d2cec57a3810db83b80e1b320df3a3721ffa/SHA1-s25--ee80d2cec57a3810db83b80e1b320df3a3721ffa': No such file or directory

git-annex: sha1foo: getFileStatus: does not exist (No such file or directory)
failed
git-annex: unannex: 1 failed
FAIL (0.54s)
      Test.hs:511:
      unannex failed

----------------------------------------------------

    fsck (basics):                                        (recording state in git...)
numcopies 2 ok
(recording state in git...)
FAIL (0.38s)
      Test.hs:862:
      fsck failed to fail with numcopies unsatisfied

----------------------------------------------------

    unannex (no copy):                                    unannex foo cp: cannot stat '.git/annex/objects/Kj/0x/SHA256E-s20--e394a389d787383843decc5d3d99b6d184ffa5fddeec23b911f9ee7fc8b9ea77/SHA256E-s20--e394a389d787383843decc5d3d99b6d184ffa5fddeec23b911f9ee7fc8b9ea77': No such file or directory

git-annex: foo: getFileStatus: does not exist (No such file or directory)
failed
git-annex: unannex: 1 failed
FAIL (0.20s)
      Test.hs:504:
      unannex failed with no copy

----------------------------------------------------

    unannex (with copy):                                  get foo (from origin...) 

100%  20 B              4 KiB/s 0s

(checksum...) ok
(recording state in git...)
unannex foo ok
unannex sha1foo cp: cannot stat '.git/annex/objects/3j/xV/SHA1-s25--ee80d2cec57a3810db83b80e1b320df3a3721ffa/SHA1-s25--ee80d2cec57a3810db83b80e1b320df3a3721ffa': No such file or directory

git-annex: sha1foo: getFileStatus: does not exist (No such file or directory)
failed
git-annex: unannex: 1 failed
FAIL (0.28s)
      Test.hs:511:
      unannex failed

----------------------------------------------------

    fsck (basics):                                        (recording state in git...)
numcopies 2 ok
(recording state in git...)
FAIL (0.22s)
      Test.hs:862:
      fsck failed to fail with numcopies unsatisfied

----------------------------------------------------

9 out of 837 tests failed (244.85s)
  (Failures above could be due to a bug in git-annex, or an incompatibility
   with utilities, such as git, installed on this system.)

Edit: Same as https://git-annex.branchable.com/bugs/failing_tests_in_master/, so done