"./operations.test -test.v -test.timeout 1h0m0s -remote TestS3R2: -verbose -fast-list -test.run '^(TestCopyURL|TestCopyURLDownloadHeaders|TestDirMove|TestRcatSize|TestRcatSizeMetadata|TestRcatSizeUploadHeaders)$|^TestRcat$/^(withChecksum=false,ignoreChecksum=false|withChecksum=false,ignoreChecksum=true|withChecksum=true,ignoreChecksum=false)$|^TestRcatMetadata$/^ViaDisk$'" - Starting (try 2/5)
2026/03/30 02:37:20 DEBUG : Creating backend with remote "TestS3R2:rclone-test-wofiqab4yoga"
2026/03/30 02:37:20 DEBUG : Using config file from "/home/rclone/.rclone.conf"
2026/03/30 02:37:20 DEBUG : Creating backend with remote "/tmp/rclone2360931992"
=== RUN   TestCopyURL
    run.go:185: Remote "S3 bucket rclone-test-wofiqab4yoga", Local "Local file system at /tmp/rclone2360931992", Modify Window "1ns"
2026/03/30 02:37:21 INFO  : S3 bucket rclone-test-wofiqab4yoga: Bucket "rclone-test-wofiqab4yoga" created with ACL ""
2026/03/30 02:37:21 ERROR : file1: Post request put error: operation error S3: PutObject, serialization failed: internal error: Seek not implemented for io.nopCloser
    operations_test.go:843: 
        	Error Trace:	/home/rclone/go/src/github.com/rclone/rclone/fs/operations/operations_test.go:843
        	Error:      	Received unexpected error:
        	            	operation error S3: PutObject, serialization failed: internal error: Seek not implemented for io.nopCloser
        	Test:       	TestCopyURL
--- FAIL: TestCopyURL (0.91s)
=== RUN   TestCopyURLDownloadHeaders
    run.go:185: Remote "S3 bucket rclone-test-wofiqab4yoga", Local "Local file system at /tmp/rclone2360931992", Modify Window "1ns"
2026/03/30 02:37:21 ERROR : file1: Post request put error: operation error S3: PutObject, serialization failed: internal error: Seek not implemented for io.nopCloser
    operations_test.go:915: 
        	Error Trace:	/home/rclone/go/src/github.com/rclone/rclone/fs/operations/operations_test.go:915
        	Error:      	Received unexpected error:
        	            	operation error S3: PutObject, serialization failed: internal error: Seek not implemented for io.nopCloser
        	Test:       	TestCopyURLDownloadHeaders
--- FAIL: TestCopyURLDownloadHeaders (0.13s)
=== RUN   TestDirMove
    run.go:185: Remote "S3 bucket rclone-test-wofiqab4yoga", Local "Local file system at /tmp/rclone2360931992", Modify Window "1ns"
2026/03/30 02:37:23 INFO  : A1/B2: Making directory
2026/03/30 02:37:23 INFO  : A1/B1/C3: Making directory
    fstest.go:250: Filtering empty directory "A1/B2"
    fstest.go:250: Filtering empty directory "A1/B1/C3"
2026/03/30 02:37:24 DEBUG : A2/B1/C2/five: size = 4 OK
2026/03/30 02:37:24 DEBUG : A1/B1/C2/five: md5 = 30056e1cab7a61d256fc8edd970d14f5 OK
2026/03/30 02:37:24 INFO  : A1/B1/C2/five: Copied (server-side copy) to: A2/B1/C2/five
2026/03/30 02:37:24 DEBUG : A2/two: size = 3 OK
2026/03/30 02:37:24 DEBUG : A1/two: md5 = b8a9f715dbb64fd5c56e7783c6820a61 OK
2026/03/30 02:37:24 INFO  : A1/two: Copied (server-side copy) to: A2/two
2026/03/30 02:37:24 DEBUG : A2/B1/C1/four: size = 4 OK
2026/03/30 02:37:24 DEBUG : A1/B1/C1/four: md5 = 8cbad96aced40b3838dd9f07f6ef5772 OK
2026/03/30 02:37:24 INFO  : A1/B1/C1/four: Copied (server-side copy) to: A2/B1/C1/four
2026/03/30 02:37:24 INFO  : A1/B1/C2/five: Deleted
2026/03/30 02:37:24 DEBUG : A2/one: size = 3 OK
2026/03/30 02:37:24 DEBUG : A1/one: md5 = f97c5d29941bfb1b2fdab0874906ab82 OK
2026/03/30 02:37:24 INFO  : A1/one: Copied (server-side copy) to: A2/one
2026/03/30 02:37:24 INFO  : A1/two: Deleted
2026/03/30 02:37:24 INFO  : A1/B1/C1/four: Deleted
2026/03/30 02:37:24 DEBUG : A2/B1/three: size = 5 OK
2026/03/30 02:37:24 DEBUG : A1/B1/three: md5 = 35d6d33467aae9a2e3dccb4b6b027878 OK
2026/03/30 02:37:24 INFO  : A1/B1/three: Copied (server-side copy) to: A2/B1/three
2026/03/30 02:37:24 INFO  : A1/one: Deleted
2026/03/30 02:37:24 INFO  : A1/B1/three: Deleted
    fstest.go:250: Filtering empty directory "A2/B2"
    fstest.go:250: Filtering empty directory "A2/B1/C3"
2026/03/30 02:37:25 DEBUG : A3/B1/C2/five: size = 4 OK
2026/03/30 02:37:25 DEBUG : A2/B1/C2/five: md5 = 30056e1cab7a61d256fc8edd970d14f5 OK
2026/03/30 02:37:25 DEBUG : A3/one: size = 3 OK
2026/03/30 02:37:25 INFO  : A2/B1/C2/five: Copied (server-side copy) to: A3/B1/C2/five
2026/03/30 02:37:25 DEBUG : A2/one: md5 = f97c5d29941bfb1b2fdab0874906ab82 OK
2026/03/30 02:37:25 INFO  : A2/one: Copied (server-side copy) to: A3/one
2026/03/30 02:37:25 DEBUG : A3/B1/C1/four: size = 4 OK
2026/03/30 02:37:25 DEBUG : A2/B1/C1/four: md5 = 8cbad96aced40b3838dd9f07f6ef5772 OK
2026/03/30 02:37:25 INFO  : A2/B1/C1/four: Copied (server-side copy) to: A3/B1/C1/four
2026/03/30 02:37:25 DEBUG : A3/two: size = 3 OK
2026/03/30 02:37:25 DEBUG : A2/two: md5 = b8a9f715dbb64fd5c56e7783c6820a61 OK
2026/03/30 02:37:25 INFO  : A2/two: Copied (server-side copy) to: A3/two
2026/03/30 02:37:25 DEBUG : A3/B1/three: size = 5 OK
2026/03/30 02:37:25 DEBUG : A2/B1/three: md5 = 35d6d33467aae9a2e3dccb4b6b027878 OK
2026/03/30 02:37:25 INFO  : A2/B1/three: Copied (server-side copy) to: A3/B1/three
2026/03/30 02:37:25 INFO  : A2/one: Deleted
2026/03/30 02:37:25 INFO  : A2/B1/C2/five: Deleted
2026/03/30 02:37:25 INFO  : A2/B1/C1/four: Deleted
2026/03/30 02:37:25 INFO  : A2/two: Deleted
2026/03/30 02:37:25 INFO  : A2/B1/three: Deleted
    fstest.go:250: Filtering empty directory "A3/B2"
    fstest.go:250: Filtering empty directory "A3/B1/C3"
2026/03/30 02:37:25 INFO  : S3 bucket rclone-test-wofiqab4yoga: Can't DirMove - falling back to file moves: can't move directory - incompatible remotes
2026/03/30 02:37:26 DEBUG : A4/B1/C2/five: size = 4 OK
2026/03/30 02:37:26 DEBUG : A3/B1/C2/five: md5 = 30056e1cab7a61d256fc8edd970d14f5 OK
2026/03/30 02:37:26 INFO  : A3/B1/C2/five: Copied (server-side copy) to: A4/B1/C2/five
2026/03/30 02:37:26 DEBUG : A4/two: size = 3 OK
2026/03/30 02:37:26 DEBUG : A3/two: md5 = b8a9f715dbb64fd5c56e7783c6820a61 OK
2026/03/30 02:37:26 INFO  : A3/two: Copied (server-side copy) to: A4/two
2026/03/30 02:37:26 DEBUG : A4/B1/C1/four: size = 4 OK
2026/03/30 02:37:26 DEBUG : A4/one: size = 3 OK
2026/03/30 02:37:26 DEBUG : A3/B1/C1/four: md5 = 8cbad96aced40b3838dd9f07f6ef5772 OK
2026/03/30 02:37:26 DEBUG : A3/one: md5 = f97c5d29941bfb1b2fdab0874906ab82 OK
2026/03/30 02:37:26 INFO  : A3/B1/C1/four: Copied (server-side copy) to: A4/B1/C1/four
2026/03/30 02:37:26 INFO  : A3/one: Copied (server-side copy) to: A4/one
2026/03/30 02:37:26 DEBUG : A4/B1/three: size = 5 OK
2026/03/30 02:37:26 DEBUG : A3/B1/three: md5 = 35d6d33467aae9a2e3dccb4b6b027878 OK
2026/03/30 02:37:26 INFO  : A3/B1/three: Copied (server-side copy) to: A4/B1/three
2026/03/30 02:37:26 INFO  : A3/B1/C2/five: Deleted
2026/03/30 02:37:26 INFO  : A3/two: Deleted
2026/03/30 02:37:26 INFO  : A3/B1/C1/four: Deleted
2026/03/30 02:37:26 INFO  : A3/one: Deleted
2026/03/30 02:37:26 INFO  : A3/B1/three: Deleted
    fstest.go:250: Filtering empty directory "A4/B2"
    fstest.go:250: Filtering empty directory "A4/B1/C3"
--- PASS: TestDirMove (5.76s)
=== RUN   TestRcat
=== RUN   TestRcat/withChecksum=false,ignoreChecksum=false
    run.go:185: Remote "S3 bucket rclone-test-wofiqab4yoga", Local "Local file system at /tmp/rclone2360931992", Modify Window "1ns"
2026/03/30 02:37:27 DEBUG : S3 bucket rclone-test-wofiqab4yoga: File to upload is small (34 bytes), uploading instead of streaming
2026/03/30 02:37:28 DEBUG : no_checksum_small_file_from_pipe: size = 34 OK
2026/03/30 02:37:28 DEBUG : no_checksum_small_file_from_pipe: md5 = 4c762bc6ec18f21b23fcae426c7863b5 OK
2026/03/30 02:37:28 DEBUG : no_checksum_small_file_from_pipe: Size and md5 of src and dst objects identical
2026/03/30 02:37:28 NOTICE: S3 bucket rclone-test-wofiqab4yoga: Streaming uploads using chunk size 5Mi will have maximum file size of 48.828Gi
2026/03/30 02:37:28 DEBUG : no_checksum_big_file_from_pipe: open chunk writer: started multipart upload: ABJUqPas-8XU7dTEOcz_FfrxlYnJxkFo3Cr83fonJeK4IhKDjkXpiuW_grKOMGnW__92L6FLS7l-XH_qernoXEd2__1TyaszMjg6pN4FyObWr-IYJemFh7xcetua4dRFkpfM9gaSjF6tbShXliyXrRzNKNQIbYWiJN5SJe7cUxkVaW1NXqhYBvEnhzoejDwyejfFc2mIhdbYi9H1R4uoXR9XcYFzm7iOpgd90TD3Ct12Q4EfxCIQuS-P7W8Cqi1HYh8PevO_Z2iuLFLAyWbJNwHHyerrBe_qBEl1U5JQDTM-zDHAmHpvEwVp6GwskV26CNX-BOHy0dKoSJNcjMw9Dhs
2026/03/30 02:37:28 DEBUG : no_checksum_big_file_from_pipe: multipart upload: starting chunk 0 size 100.001Ki offset 0/off
2026/03/30 02:37:28 DEBUG : no_checksum_big_file_from_pipe: multipart upload wrote chunk 1 with 102401 bytes and etag "fffc7956ba9a7b58a63c01b6ce1ddc45"
2026/03/30 02:37:28 DEBUG : no_checksum_big_file_from_pipe: multipart upload "ABJUqPas-8XU7dTEOcz_FfrxlYnJxkFo3Cr83fonJeK4IhKDjkXpiuW_grKOMGnW__92L6FLS7l-XH_qernoXEd2__1TyaszMjg6pN4FyObWr-IYJemFh7xcetua4dRFkpfM9gaSjF6tbShXliyXrRzNKNQIbYWiJN5SJe7cUxkVaW1NXqhYBvEnhzoejDwyejfFc2mIhdbYi9H1R4uoXR9XcYFzm7iOpgd90TD3Ct12Q4EfxCIQuS-P7W8Cqi1HYh8PevO_Z2iuLFLAyWbJNwHHyerrBe_qBEl1U5JQDTM-zDHAmHpvEwVp6GwskV26CNX-BOHy0dKoSJNcjMw9Dhs" finished
2026/03/30 02:37:28 DEBUG : no_checksum_big_file_from_pipe: size = 102401 OK
2026/03/30 02:37:28 DEBUG : no_checksum_big_file_from_pipe: Dst hash empty - aborting Src hash check
2026/03/30 02:37:28 DEBUG : no_checksum_big_file_from_pipe: Size of src and dst objects identical
=== RUN   TestRcat/withChecksum=true,ignoreChecksum=false
    run.go:185: Remote "S3 bucket rclone-test-wofiqab4yoga", Local "Local file system at /tmp/rclone2360931992", Modify Window "1ns"
2026/03/30 02:37:29 DEBUG : S3 bucket rclone-test-wofiqab4yoga: File to upload is small (34 bytes), uploading instead of streaming
2026/03/30 02:37:29 DEBUG : with_checksum_small_file_from_pipe: size = 34 OK
2026/03/30 02:37:29 DEBUG : with_checksum_small_file_from_pipe: md5 = 4c762bc6ec18f21b23fcae426c7863b5 OK
2026/03/30 02:37:29 DEBUG : with_checksum_small_file_from_pipe: Size and md5 of src and dst objects identical
2026/03/30 02:37:29 DEBUG : with_checksum_big_file_from_pipe: open chunk writer: started multipart upload: AIRbFY9oXlM_H96n0MxG-1BC03LnKay6_O7Z1E_kt1xXGS4aXok5vw_DLMofpznfgCqYn4yCfd27SydUNgrMoeiswRzbaybXOath7GDn6hswqbK897q9lK5ReyYKCOZDUhcyuVwvqKvR-CrQ28nJ_x8djunS2__xcsV5IbpWNp_Y_0JWS-5CD7wl1aZ4zoOeOIk7FrPbst5H05IWyi7OToG9SZlUmYJUo-KDLmShDG-qj2_4XQeBBcMx98-bnuz621kxISimoFzY128uUEt0HQ6YvXDtv4jQ0euJzFiB6XHDUB77nzWk4QUzG8M9nmW49c2RPYJtwlHnAzX4NiRpC-4
2026/03/30 02:37:29 DEBUG : with_checksum_big_file_from_pipe: multipart upload: starting chunk 0 size 100.001Ki offset 0/off
2026/03/30 02:37:29 DEBUG : with_checksum_big_file_from_pipe: multipart upload wrote chunk 1 with 102401 bytes and etag "fffc7956ba9a7b58a63c01b6ce1ddc45"
2026/03/30 02:37:30 DEBUG : with_checksum_big_file_from_pipe: multipart upload "AIRbFY9oXlM_H96n0MxG-1BC03LnKay6_O7Z1E_kt1xXGS4aXok5vw_DLMofpznfgCqYn4yCfd27SydUNgrMoeiswRzbaybXOath7GDn6hswqbK897q9lK5ReyYKCOZDUhcyuVwvqKvR-CrQ28nJ_x8djunS2__xcsV5IbpWNp_Y_0JWS-5CD7wl1aZ4zoOeOIk7FrPbst5H05IWyi7OToG9SZlUmYJUo-KDLmShDG-qj2_4XQeBBcMx98-bnuz621kxISimoFzY128uUEt0HQ6YvXDtv4jQ0euJzFiB6XHDUB77nzWk4QUzG8M9nmW49c2RPYJtwlHnAzX4NiRpC-4" finished
2026/03/30 02:37:30 DEBUG : with_checksum_big_file_from_pipe: size = 102401 OK
2026/03/30 02:37:30 DEBUG : with_checksum_big_file_from_pipe: Dst hash empty - aborting Src hash check
2026/03/30 02:37:30 DEBUG : with_checksum_big_file_from_pipe: Size of src and dst objects identical
=== RUN   TestRcat/withChecksum=false,ignoreChecksum=true
    run.go:185: Remote "S3 bucket rclone-test-wofiqab4yoga", Local "Local file system at /tmp/rclone2360931992", Modify Window "1ns"
2026/03/30 02:37:30 DEBUG : S3 bucket rclone-test-wofiqab4yoga: File to upload is small (34 bytes), uploading instead of streaming
2026/03/30 02:37:31 DEBUG : ignore_checksum_small_file_from_pipe: size = 34 OK
2026/03/30 02:37:31 DEBUG : ignore_checksum_small_file_from_pipe: Size and modification time the same (differ by 0s, within tolerance 1ns)
2026/03/30 02:37:31 DEBUG : ignore_checksum_big_file_from_pipe: open chunk writer: started multipart upload: AKOv57_z9OqnB90jItzZHtWIB89B-KyK5ixhEu77DXrpsVYherzTD34b5aBZm2F9_bj09HIWhGKOtrKGwuzhHrn6bn7SHSufhjpVTNEC-jsFZdk9RJWwHKTtfgkW1vUIKha9d3S_Qfw9-jegVVs-1Xzh8KtdVpaj6skRO-NpLYXazKf9H6aFNKBC6NeZ7Rs5EFSIKH6bXbtuVo8hGY5mOfOuGwawJjhMUVCv7GLsdyndBmpyAziLfxH9eRryvL5uBbY8bcwpz8apO1OZmuHG7bOhsnjCvF4UrSLtcRrCZlx046ddfuvcbBFByI-xLgQsDlQfXy1z9eSkpXfe0yu_v-s
2026/03/30 02:37:31 DEBUG : ignore_checksum_big_file_from_pipe: multipart upload: starting chunk 0 size 100.001Ki offset 0/off
2026/03/30 02:37:31 DEBUG : ignore_checksum_big_file_from_pipe: multipart upload wrote chunk 1 with 102401 bytes and etag "fffc7956ba9a7b58a63c01b6ce1ddc45"
2026/03/30 02:37:31 DEBUG : ignore_checksum_big_file_from_pipe: multipart upload "AKOv57_z9OqnB90jItzZHtWIB89B-KyK5ixhEu77DXrpsVYherzTD34b5aBZm2F9_bj09HIWhGKOtrKGwuzhHrn6bn7SHSufhjpVTNEC-jsFZdk9RJWwHKTtfgkW1vUIKha9d3S_Qfw9-jegVVs-1Xzh8KtdVpaj6skRO-NpLYXazKf9H6aFNKBC6NeZ7Rs5EFSIKH6bXbtuVo8hGY5mOfOuGwawJjhMUVCv7GLsdyndBmpyAziLfxH9eRryvL5uBbY8bcwpz8apO1OZmuHG7bOhsnjCvF4UrSLtcRrCZlx046ddfuvcbBFByI-xLgQsDlQfXy1z9eSkpXfe0yu_v-s" finished
2026/03/30 02:37:31 DEBUG : ignore_checksum_big_file_from_pipe: size = 102401 OK
2026/03/30 02:37:31 DEBUG : ignore_checksum_big_file_from_pipe: Size and modification time the same (differ by 0s, within tolerance 1ns)
--- PASS: TestRcat (4.54s)
    --- PASS: TestRcat/withChecksum=false,ignoreChecksum=false (1.54s)
    --- PASS: TestRcat/withChecksum=true,ignoreChecksum=false (1.48s)
    --- PASS: TestRcat/withChecksum=false,ignoreChecksum=true (1.52s)
=== RUN   TestRcatMetadata
    run.go:185: Remote "S3 bucket rclone-test-wofiqab4yoga", Local "Local file system at /tmp/rclone2360931992", Modify Window "1ns"
=== RUN   TestRcatMetadata/ViaDisk
2026/03/30 02:37:32 DEBUG : rcat_metadata_uploadcutoff0: open chunk writer: started multipart upload: AGIIAzlpy34sm3yawxqAqejeC4Pb4u4Oa0EJSbiqBwWvp_mtD1xaNcHgX4-U21gcwlpaKmg4RlC4NMlRaXAsbyb2fFCJD8YTvxjnpT1cbarna9-LSs-SddYxRVzpYYFIMCpnnNMyCabei9AKGOe7o39t5CBpqwG5OW6_iL6KPSNM03jZMfUmQsi2_q5-q8z_CDTLh_CqjvZU1O4aH1g8qYoOfg7ITILxocRdZihItf92QWFM5iw4fSi8w33DjfX4UyxYKNjHk99uQKLAw-FIgkEDsScWuxOCNmKI9kXY_7z5U2Qx4HCWCTu3Yp2KRZDv69G3IBtYJF6SxncW_LUTHKY
2026/03/30 02:37:32 DEBUG : rcat_metadata_uploadcutoff0: multipart upload: starting chunk 0 size 63 offset 0/off
2026/03/30 02:37:32 DEBUG : rcat_metadata_uploadcutoff0: multipart upload wrote chunk 1 with 63 bytes and etag "51ca8560f35b9b87370a65d72356b86c"
2026/03/30 02:37:32 DEBUG : rcat_metadata_uploadcutoff0: multipart upload "AGIIAzlpy34sm3yawxqAqejeC4Pb4u4Oa0EJSbiqBwWvp_mtD1xaNcHgX4-U21gcwlpaKmg4RlC4NMlRaXAsbyb2fFCJD8YTvxjnpT1cbarna9-LSs-SddYxRVzpYYFIMCpnnNMyCabei9AKGOe7o39t5CBpqwG5OW6_iL6KPSNM03jZMfUmQsi2_q5-q8z_CDTLh_CqjvZU1O4aH1g8qYoOfg7ITILxocRdZihItf92QWFM5iw4fSi8w33DjfX4UyxYKNjHk99uQKLAw-FIgkEDsScWuxOCNmKI9kXY_7z5U2Qx4HCWCTu3Yp2KRZDv69G3IBtYJF6SxncW_LUTHKY" finished
2026/03/30 02:37:32 DEBUG : rcat_metadata_uploadcutoff0: size = 63 OK
2026/03/30 02:37:32 DEBUG : rcat_metadata_uploadcutoff0: Dst hash empty - aborting Src hash check
2026/03/30 02:37:32 DEBUG : rcat_metadata_uploadcutoff0: Size of src and dst objects identical
--- PASS: TestRcatMetadata (1.17s)
    --- PASS: TestRcatMetadata/ViaDisk (1.02s)
=== RUN   TestRcatSize
    run.go:185: Remote "S3 bucket rclone-test-wofiqab4yoga", Local "Local file system at /tmp/rclone2360931992", Modify Window "1ns"
2026/03/30 02:37:33 ERROR : potato1: Post request put error: operation error S3: PutObject, serialization failed: internal error: Seek not implemented for io.nopCloserWriterTo
    operations_test.go:1624: 
        	Error Trace:	/home/rclone/go/src/github.com/rclone/rclone/fs/operations/operations_test.go:1624
        	Error:      	Received unexpected error:
        	            	operation error S3: PutObject, serialization failed: internal error: Seek not implemented for io.nopCloserWriterTo
        	Test:       	TestRcatSize
--- FAIL: TestRcatSize (0.15s)
=== RUN   TestRcatSizeMetadata
    run.go:185: Remote "S3 bucket rclone-test-wofiqab4yoga", Local "Local file system at /tmp/rclone2360931992", Modify Window "1ns"
2026/03/30 02:37:33 ERROR : potato1: Post request put error: operation error S3: PutObject, serialization failed: internal error: Seek not implemented for io.nopCloserWriterTo
    operations_test.go:1663: 
        	Error Trace:	/home/rclone/go/src/github.com/rclone/rclone/fs/operations/operations_test.go:1663
        	Error:      	Received unexpected error:
        	            	operation error S3: PutObject, serialization failed: internal error: Seek not implemented for io.nopCloserWriterTo
        	Test:       	TestRcatSizeMetadata
--- FAIL: TestRcatSizeMetadata (0.15s)
=== RUN   TestRcatSizeUploadHeaders
    run.go:185: Remote "S3 bucket rclone-test-wofiqab4yoga", Local "Local file system at /tmp/rclone2360931992", Modify Window "1ns"
2026/03/30 02:37:33 ERROR : potato1: Don't know how to set key "X-Upload-Header" on upload
2026/03/30 02:37:33 ERROR : potato1: Post request put error: operation error S3: PutObject, serialization failed: internal error: Seek not implemented for io.nopCloserWriterTo
    operations_test.go:1714: 
        	Error Trace:	/home/rclone/go/src/github.com/rclone/rclone/fs/operations/operations_test.go:1714
        	Error:      	Received unexpected error:
        	            	operation error S3: PutObject, serialization failed: internal error: Seek not implemented for io.nopCloserWriterTo
        	Test:       	TestRcatSizeUploadHeaders
--- FAIL: TestRcatSizeUploadHeaders (0.13s)
FAIL
2026/03/30 02:37:33 DEBUG : S3 bucket rclone-test-wofiqab4yoga: Purge remote
2026/03/30 02:37:33 DEBUG : S3 bucket rclone-test-wofiqab4yoga: bucket is versioned: false
2026/03/30 02:37:33 DEBUG : Waiting for deletions to finish
2026/03/30 02:37:34 INFO  : S3 bucket rclone-test-wofiqab4yoga: Bucket "rclone-test-wofiqab4yoga" deleted
"./operations.test -test.v -test.timeout 1h0m0s -remote TestS3R2: -verbose -fast-list -test.run '^(TestCopyURL|TestCopyURLDownloadHeaders|TestDirMove|TestRcatSize|TestRcatSizeMetadata|TestRcatSizeUploadHeaders)$|^TestRcat$/^(withChecksum=false,ignoreChecksum=false|withChecksum=false,ignoreChecksum=true|withChecksum=true,ignoreChecksum=false)$|^TestRcatMetadata$/^ViaDisk$'" - Finished ERROR in 14.045043979s (try 2/5): exit status 1: Failed [TestCopyURL TestCopyURLDownloadHeaders TestRcatSize TestRcatSizeMetadata TestRcatSizeUploadHeaders]