"./vfs.test -test.v -test.timeout 1h0m0s -remote TestMega: -verbose -test.run '^(TestVFSStatParent|TestWriteFileHandleFlush)$|^TestFileRename$/^(full,forceCache=false|minimal,forceCache=false|minimal,forceCache=true|off,forceCache=false|writes,forceCache=false|writes,forceCache=true)$'" - Starting (try 4/5)
2026/03/30 04:46:11 DEBUG : Creating backend with remote "TestMega:rclone-test-rogonex9cayo"
2026/03/30 04:46:11 DEBUG : Using config file from "/home/rclone/.rclone.conf"
2026/03/30 04:46:11 DEBUG : mega root 'rclone-test-rogonex9cayo': Using previously stored session ID and master key to initialize the Mega API
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': login with previous auth keys failed: unexpected end of JSON input
2026/03/30 04:46:21 DEBUG : Creating backend with remote "/tmp/rclone4053631616"
=== RUN   TestFileRename
=== RUN   TestFileRename/off,forceCache=false
    run.go:185: Remote "mega root 'rclone-test-rogonex9cayo'", Local "Local file system at /tmp/rclone4053631616", Modify Window "876000h0m0s"
2026/03/30 04:46:21 INFO  : mega root 'rclone-test-rogonex9cayo': poll-interval is not supported by this remote
2026/03/30 04:46:21 NOTICE: mega root 'rclone-test-rogonex9cayo': --vfs-cache-mode writes or full is recommended for this remote as it can't stream
    run.go:242: Failed to mkdir "mega root 'rclone-test-rogonex9cayo'": Invalid arguments
2026/03/30 04:46:21 DEBUG : WaitForWriters: timeout=30s
2026/03/30 04:46:21 DEBUG : Looking for writers
2026/03/30 04:46:21 DEBUG : >WaitForWriters: 
2026/03/30 04:46:21 ERROR : error listing: Invalid arguments
    run.go:169: 
        	Error Trace:	/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:169
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:393
        	            				/usr/local/go/src/testing/testing.go:1317
        	            				/usr/local/go/src/testing/testing.go:1667
        	            				/usr/local/go/src/testing/testing.go:2030
        	            				/usr/local/go/src/runtime/panic.go:694
        	            				/usr/local/go/src/testing/testing.go:1022
        	            				/usr/local/go/src/testing/testing.go:1228
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:242
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:250
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:263
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:297
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:27
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:302
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:413
        	            				/usr/local/go/src/runtime/asm_amd64.s:1771
        	Error:      	Received unexpected error:
        	            	Invalid arguments
        	Test:       	TestFileRename/off,forceCache=false
=== RUN   TestFileRename/minimal,forceCache=false
    run.go:185: Remote "mega root 'rclone-test-rogonex9cayo'", Local "Local file system at /tmp/rclone4053631616", Modify Window "876000h0m0s"
2026/03/30 04:46:21 INFO  : mega root 'rclone-test-rogonex9cayo': poll-interval is not supported by this remote
2026/03/30 04:46:21 NOTICE: mega root 'rclone-test-rogonex9cayo': --vfs-cache-mode writes or full is recommended for this remote as it can't stream
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: root is "/home/rclone/.cache/rclone"
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: data root is "/home/rclone/.cache/rclone/vfs/TestMega/rclone-test-rogonex9cayo"
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: metadata root is "/home/rclone/.cache/rclone/vfsMeta/TestMega/rclone-test-rogonex9cayo"
2026/03/30 04:46:21 DEBUG : Creating backend with remote ":local,encoding='Slash,Dot',links=false:/home/rclone/.cache/rclone/vfs/TestMega/rclone-test-rogonex9cayo"
2026/03/30 04:46:21 DEBUG : :local: detected overridden config - adding "{8un-i}" suffix to name
2026/03/30 04:46:21 DEBUG : fs cache: renaming cache item ":local,encoding='Slash,Dot',links=false:/home/rclone/.cache/rclone/vfs/TestMega/rclone-test-rogonex9cayo" to be canonical ":local{8un-i}:/home/rclone/.cache/rclone/vfs/TestMega/rclone-test-rogonex9cayo"
2026/03/30 04:46:21 DEBUG : Creating backend with remote ":local,encoding='Slash,Dot',links=false:/home/rclone/.cache/rclone/vfsMeta/TestMega/rclone-test-rogonex9cayo"
2026/03/30 04:46:21 DEBUG : :local: detected overridden config - adding "{8un-i}" suffix to name
2026/03/30 04:46:21 DEBUG : fs cache: renaming cache item ":local,encoding='Slash,Dot',links=false:/home/rclone/.cache/rclone/vfsMeta/TestMega/rclone-test-rogonex9cayo" to be canonical ":local{8un-i}:/home/rclone/.cache/rclone/vfsMeta/TestMega/rclone-test-rogonex9cayo"
    run.go:242: Failed to mkdir "mega root 'rclone-test-rogonex9cayo'": Invalid arguments
2026/03/30 04:46:21 DEBUG : WaitForWriters: timeout=30s
2026/03/30 04:46:21 DEBUG : Looking for writers
2026/03/30 04:46:21 DEBUG : >WaitForWriters: 
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: cleaner exiting
2026/03/30 04:46:21 ERROR : error listing: Invalid arguments
    run.go:169: 
        	Error Trace:	/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:169
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:393
        	            				/usr/local/go/src/testing/testing.go:1317
        	            				/usr/local/go/src/testing/testing.go:1667
        	            				/usr/local/go/src/testing/testing.go:2030
        	            				/usr/local/go/src/runtime/panic.go:694
        	            				/usr/local/go/src/testing/testing.go:1022
        	            				/usr/local/go/src/testing/testing.go:1228
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:242
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:250
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:263
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:297
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:27
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:302
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:413
        	            				/usr/local/go/src/runtime/asm_amd64.s:1771
        	Error:      	Received unexpected error:
        	            	Invalid arguments
        	Test:       	TestFileRename/minimal,forceCache=false
=== RUN   TestFileRename/minimal,forceCache=true
    run.go:185: Remote "mega root 'rclone-test-rogonex9cayo'", Local "Local file system at /tmp/rclone4053631616", Modify Window "876000h0m0s"
2026/03/30 04:46:21 INFO  : mega root 'rclone-test-rogonex9cayo': poll-interval is not supported by this remote
2026/03/30 04:46:21 NOTICE: mega root 'rclone-test-rogonex9cayo': --vfs-cache-mode writes or full is recommended for this remote as it can't stream
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: root is "/home/rclone/.cache/rclone"
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: data root is "/home/rclone/.cache/rclone/vfs/TestMega/rclone-test-rogonex9cayo"
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: metadata root is "/home/rclone/.cache/rclone/vfsMeta/TestMega/rclone-test-rogonex9cayo"
2026/03/30 04:46:21 DEBUG : fs cache: switching user supplied name ":local,encoding='Slash,Dot',links=false:/home/rclone/.cache/rclone/vfs/TestMega/rclone-test-rogonex9cayo" for canonical name ":local{8un-i}:/home/rclone/.cache/rclone/vfs/TestMega/rclone-test-rogonex9cayo"
2026/03/30 04:46:21 DEBUG : fs cache: switching user supplied name ":local,encoding='Slash,Dot',links=false:/home/rclone/.cache/rclone/vfsMeta/TestMega/rclone-test-rogonex9cayo" for canonical name ":local{8un-i}:/home/rclone/.cache/rclone/vfsMeta/TestMega/rclone-test-rogonex9cayo"
    run.go:242: Failed to mkdir "mega root 'rclone-test-rogonex9cayo'": Invalid arguments
2026/03/30 04:46:21 DEBUG : WaitForWriters: timeout=30s
2026/03/30 04:46:21 DEBUG : Looking for writers
2026/03/30 04:46:21 DEBUG : >WaitForWriters: 
2026/03/30 04:46:21 INFO  : mega root 'rclone-test-rogonex9cayo': vfs cache: cleaned: objects 0 (was 0) in use 0, to upload 0, uploading 0, total size 0 (was 0)
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: cleaner exiting
2026/03/30 04:46:21 ERROR : error listing: Invalid arguments
    run.go:169: 
        	Error Trace:	/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:169
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:393
        	            				/usr/local/go/src/testing/testing.go:1317
        	            				/usr/local/go/src/testing/testing.go:1667
        	            				/usr/local/go/src/testing/testing.go:2030
        	            				/usr/local/go/src/runtime/panic.go:694
        	            				/usr/local/go/src/testing/testing.go:1022
        	            				/usr/local/go/src/testing/testing.go:1228
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:242
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:250
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:263
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:297
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:27
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:302
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:413
        	            				/usr/local/go/src/runtime/asm_amd64.s:1771
        	Error:      	Received unexpected error:
        	            	Invalid arguments
        	Test:       	TestFileRename/minimal,forceCache=true
=== RUN   TestFileRename/writes,forceCache=false
    run.go:185: Remote "mega root 'rclone-test-rogonex9cayo'", Local "Local file system at /tmp/rclone4053631616", Modify Window "876000h0m0s"
2026/03/30 04:46:21 INFO  : mega root 'rclone-test-rogonex9cayo': poll-interval is not supported by this remote
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: root is "/home/rclone/.cache/rclone"
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: data root is "/home/rclone/.cache/rclone/vfs/TestMega/rclone-test-rogonex9cayo"
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: metadata root is "/home/rclone/.cache/rclone/vfsMeta/TestMega/rclone-test-rogonex9cayo"
2026/03/30 04:46:21 DEBUG : fs cache: switching user supplied name ":local,encoding='Slash,Dot',links=false:/home/rclone/.cache/rclone/vfs/TestMega/rclone-test-rogonex9cayo" for canonical name ":local{8un-i}:/home/rclone/.cache/rclone/vfs/TestMega/rclone-test-rogonex9cayo"
2026/03/30 04:46:21 DEBUG : fs cache: switching user supplied name ":local,encoding='Slash,Dot',links=false:/home/rclone/.cache/rclone/vfsMeta/TestMega/rclone-test-rogonex9cayo" for canonical name ":local{8un-i}:/home/rclone/.cache/rclone/vfsMeta/TestMega/rclone-test-rogonex9cayo"
    run.go:242: Failed to mkdir "mega root 'rclone-test-rogonex9cayo'": Invalid arguments
2026/03/30 04:46:21 DEBUG : WaitForWriters: timeout=30s
2026/03/30 04:46:21 DEBUG : Looking for writers
2026/03/30 04:46:21 DEBUG : >WaitForWriters: 
2026/03/30 04:46:21 ERROR : error listing: Invalid arguments
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: cleaner exiting
    run.go:169: 
        	Error Trace:	/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:169
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:393
        	            				/usr/local/go/src/testing/testing.go:1317
        	            				/usr/local/go/src/testing/testing.go:1667
        	            				/usr/local/go/src/testing/testing.go:2030
        	            				/usr/local/go/src/runtime/panic.go:694
        	            				/usr/local/go/src/testing/testing.go:1022
        	            				/usr/local/go/src/testing/testing.go:1228
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:242
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:250
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:263
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:297
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:27
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:302
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:413
        	            				/usr/local/go/src/runtime/asm_amd64.s:1771
        	Error:      	Received unexpected error:
        	            	Invalid arguments
        	Test:       	TestFileRename/writes,forceCache=false
=== RUN   TestFileRename/writes,forceCache=true
    run.go:185: Remote "mega root 'rclone-test-rogonex9cayo'", Local "Local file system at /tmp/rclone4053631616", Modify Window "876000h0m0s"
2026/03/30 04:46:21 INFO  : mega root 'rclone-test-rogonex9cayo': poll-interval is not supported by this remote
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: root is "/home/rclone/.cache/rclone"
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: data root is "/home/rclone/.cache/rclone/vfs/TestMega/rclone-test-rogonex9cayo"
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: metadata root is "/home/rclone/.cache/rclone/vfsMeta/TestMega/rclone-test-rogonex9cayo"
2026/03/30 04:46:21 DEBUG : fs cache: switching user supplied name ":local,encoding='Slash,Dot',links=false:/home/rclone/.cache/rclone/vfs/TestMega/rclone-test-rogonex9cayo" for canonical name ":local{8un-i}:/home/rclone/.cache/rclone/vfs/TestMega/rclone-test-rogonex9cayo"
2026/03/30 04:46:21 DEBUG : fs cache: switching user supplied name ":local,encoding='Slash,Dot',links=false:/home/rclone/.cache/rclone/vfsMeta/TestMega/rclone-test-rogonex9cayo" for canonical name ":local{8un-i}:/home/rclone/.cache/rclone/vfsMeta/TestMega/rclone-test-rogonex9cayo"
    run.go:242: Failed to mkdir "mega root 'rclone-test-rogonex9cayo'": Invalid arguments
2026/03/30 04:46:21 DEBUG : WaitForWriters: timeout=30s
2026/03/30 04:46:21 DEBUG : Looking for writers
2026/03/30 04:46:21 DEBUG : >WaitForWriters: 
2026/03/30 04:46:21 INFO  : mega root 'rclone-test-rogonex9cayo': vfs cache: cleaned: objects 0 (was 0) in use 0, to upload 0, uploading 0, total size 0 (was 0)
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: cleaner exiting
2026/03/30 04:46:21 ERROR : error listing: Invalid arguments
    run.go:169: 
        	Error Trace:	/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:169
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:393
        	            				/usr/local/go/src/testing/testing.go:1317
        	            				/usr/local/go/src/testing/testing.go:1667
        	            				/usr/local/go/src/testing/testing.go:2030
        	            				/usr/local/go/src/runtime/panic.go:694
        	            				/usr/local/go/src/testing/testing.go:1022
        	            				/usr/local/go/src/testing/testing.go:1228
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:242
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:250
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:263
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:297
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:27
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:302
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:413
        	            				/usr/local/go/src/runtime/asm_amd64.s:1771
        	Error:      	Received unexpected error:
        	            	Invalid arguments
        	Test:       	TestFileRename/writes,forceCache=true
=== RUN   TestFileRename/full,forceCache=false
    run.go:185: Remote "mega root 'rclone-test-rogonex9cayo'", Local "Local file system at /tmp/rclone4053631616", Modify Window "876000h0m0s"
2026/03/30 04:46:21 INFO  : mega root 'rclone-test-rogonex9cayo': poll-interval is not supported by this remote
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: root is "/home/rclone/.cache/rclone"
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: data root is "/home/rclone/.cache/rclone/vfs/TestMega/rclone-test-rogonex9cayo"
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: metadata root is "/home/rclone/.cache/rclone/vfsMeta/TestMega/rclone-test-rogonex9cayo"
2026/03/30 04:46:21 DEBUG : fs cache: switching user supplied name ":local,encoding='Slash,Dot',links=false:/home/rclone/.cache/rclone/vfs/TestMega/rclone-test-rogonex9cayo" for canonical name ":local{8un-i}:/home/rclone/.cache/rclone/vfs/TestMega/rclone-test-rogonex9cayo"
2026/03/30 04:46:21 DEBUG : fs cache: switching user supplied name ":local,encoding='Slash,Dot',links=false:/home/rclone/.cache/rclone/vfsMeta/TestMega/rclone-test-rogonex9cayo" for canonical name ":local{8un-i}:/home/rclone/.cache/rclone/vfsMeta/TestMega/rclone-test-rogonex9cayo"
    run.go:242: Failed to mkdir "mega root 'rclone-test-rogonex9cayo'": Invalid arguments
2026/03/30 04:46:21 DEBUG : WaitForWriters: timeout=30s
2026/03/30 04:46:21 DEBUG : Looking for writers
2026/03/30 04:46:21 DEBUG : >WaitForWriters: 
2026/03/30 04:46:21 ERROR : error listing: Invalid arguments
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': vfs cache: cleaner exiting
    run.go:169: 
        	Error Trace:	/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:169
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:393
        	            				/usr/local/go/src/testing/testing.go:1317
        	            				/usr/local/go/src/testing/testing.go:1667
        	            				/usr/local/go/src/testing/testing.go:2030
        	            				/usr/local/go/src/runtime/panic.go:694
        	            				/usr/local/go/src/testing/testing.go:1022
        	            				/usr/local/go/src/testing/testing.go:1228
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:242
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:250
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:263
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:297
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:27
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:302
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/file_test.go:413
        	            				/usr/local/go/src/runtime/asm_amd64.s:1771
        	Error:      	Received unexpected error:
        	            	Invalid arguments
        	Test:       	TestFileRename/full,forceCache=false
--- FAIL: TestFileRename (0.01s)
    --- FAIL: TestFileRename/off,forceCache=false (0.00s)
    --- FAIL: TestFileRename/minimal,forceCache=false (0.00s)
    --- FAIL: TestFileRename/minimal,forceCache=true (0.00s)
    --- FAIL: TestFileRename/writes,forceCache=false (0.00s)
    --- FAIL: TestFileRename/writes,forceCache=true (0.00s)
    --- FAIL: TestFileRename/full,forceCache=false (0.00s)
=== RUN   TestVFSStatParent
    run.go:185: Remote "mega root 'rclone-test-rogonex9cayo'", Local "Local file system at /tmp/rclone4053631616", Modify Window "876000h0m0s"
2026/03/30 04:46:21 INFO  : mega root 'rclone-test-rogonex9cayo': poll-interval is not supported by this remote
2026/03/30 04:46:21 NOTICE: mega root 'rclone-test-rogonex9cayo': --vfs-cache-mode writes or full is recommended for this remote as it can't stream
    run.go:242: Failed to mkdir "mega root 'rclone-test-rogonex9cayo'": Invalid arguments
2026/03/30 04:46:21 DEBUG : WaitForWriters: timeout=30s
2026/03/30 04:46:21 DEBUG : Looking for writers
2026/03/30 04:46:21 DEBUG : >WaitForWriters: 
2026/03/30 04:46:21 ERROR : error listing: Invalid arguments
    run.go:169: 
        	Error Trace:	/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:169
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:393
        	            				/usr/local/go/src/testing/testing.go:1317
        	            				/usr/local/go/src/testing/testing.go:1667
        	            				/usr/local/go/src/testing/testing.go:2030
        	            				/usr/local/go/src/runtime/panic.go:694
        	            				/usr/local/go/src/testing/testing.go:1022
        	            				/usr/local/go/src/testing/testing.go:1228
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:242
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:250
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:263
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:297
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/vfs_test.go:223
        	Error:      	Received unexpected error:
        	            	Invalid arguments
        	Test:       	TestVFSStatParent
--- FAIL: TestVFSStatParent (0.00s)
=== RUN   TestWriteFileHandleFlush
    run.go:185: Remote "mega root 'rclone-test-rogonex9cayo'", Local "Local file system at /tmp/rclone4053631616", Modify Window "876000h0m0s"
2026/03/30 04:46:21 INFO  : mega root 'rclone-test-rogonex9cayo': poll-interval is not supported by this remote
2026/03/30 04:46:21 NOTICE: mega root 'rclone-test-rogonex9cayo': --vfs-cache-mode writes or full is recommended for this remote as it can't stream
2026/03/30 04:46:21 DEBUG : file1: OpenFile: flags=O_WRONLY|O_CREATE, perm=-rwxrwxrwx
2026/03/30 04:46:21 ERROR : /: Dir.Stat error: Invalid arguments
2026/03/30 04:46:21 DEBUG : file1: >OpenFile: fd=<nil>, err=Invalid arguments
    write_test.go:25: 
        	Error Trace:	/home/rclone/go/src/github.com/rclone/rclone/vfs/write_test.go:25
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/write_test.go:239
        	Error:      	Received unexpected error:
        	            	Invalid arguments
        	Test:       	TestWriteFileHandleFlush
2026/03/30 04:46:21 DEBUG : WaitForWriters: timeout=30s
2026/03/30 04:46:21 DEBUG : Looking for writers
2026/03/30 04:46:21 DEBUG : >WaitForWriters: 
2026/03/30 04:46:21 ERROR : error listing: Invalid arguments
    run.go:169: 
        	Error Trace:	/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:169
        	            				/home/rclone/go/src/github.com/rclone/rclone/fstest/run.go:393
        	            				/usr/local/go/src/testing/testing.go:1317
        	            				/usr/local/go/src/testing/testing.go:1667
        	            				/usr/local/go/src/testing/testing.go:2030
        	            				/usr/local/go/src/runtime/panic.go:694
        	            				/usr/local/go/src/testing/testing.go:1022
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/write_test.go:25
        	            				/home/rclone/go/src/github.com/rclone/rclone/vfs/write_test.go:239
        	Error:      	Received unexpected error:
        	            	Invalid arguments
        	Test:       	TestWriteFileHandleFlush
--- FAIL: TestWriteFileHandleFlush (0.00s)
FAIL
2026/03/30 04:46:21 DEBUG : mega root 'rclone-test-rogonex9cayo': Purge remote
2026/03/30 04:46:21 NOTICE: purge failed: Invalid arguments
"./vfs.test -test.v -test.timeout 1h0m0s -remote TestMega: -verbose -test.run '^(TestVFSStatParent|TestWriteFileHandleFlush)$|^TestFileRename$/^(full,forceCache=false|minimal,forceCache=false|minimal,forceCache=true|off,forceCache=false|writes,forceCache=false|writes,forceCache=true)$'" - Finished ERROR in 10.602434756s (try 4/5): exit status 1: Failed [TestFileRename/off,forceCache=false TestFileRename/minimal,forceCache=false TestFileRename/minimal,forceCache=true TestFileRename/writes,forceCache=false TestFileRename/writes,forceCache=true TestFileRename/full,forceCache=false TestVFSStatParent TestWriteFileHandleFlush]