autopkgtest fails in hirsute on s390x for 3.1.1-1

https://autopkgtest.ubuntu.com/packages/n/node-pbkdf2/hirsute/s390x
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https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-hirsute/hirsute/s390x/n/node-pbkdf2/20210307_202433_2101b@/log.gz
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    # JavaScript pbkdf2 async w/ sha1 encodes "112,97,115,115,119,111,114,100" (Int32Array) with salt "salt" (string) with sha1 to f260ccd0bbc8fe6773119b834feec48636b716caad4180a4d0af4f9aa67c646e
    ok 48 null
    not ok 49 should be equal
      ---
        operator: equal
        expected: |-
          'f260ccd0bbc8fe6773119b834feec48636b716caad4180a4d0af4f9aa67c646e'
        actual: |-
          'a1b800f88a59d9e6b33d9a0945cccb8faea0c768ebb2a74d6dc9a6eb2e913de8'
        at: <anonymous> (/tmp/autopkgtest.ENAjUJ/autopkgtest_tmp/smokesPey8q/test/index.js:168:13)
        stack: |-
          Error: should be equal
              at Test.assert [as _assert] (/usr/share/nodejs/tape/lib/test.js:236:54)
              at Test.bound [as _assert] (/usr/share/nodejs/tape/lib/test.js:88:32)
              at Test.equal (/usr/share/nodejs/tape/lib/test.js:396:10)
              at Test.bound [as equal] (/usr/share/nodejs/tape/lib/test.js:88:32)
              at /tmp/autopkgtest.ENAjUJ/autopkgtest_tmp/smokesPey8q/test/index.js:168:13
              at /usr/share/nodejs/pbkdf2/lib/async.js:63:7
              at processTicksAndRejections (internal/process/task_queues.js:79:11)
...

The test is also failing in Debian Sid.