Task 9782373

Name	07970480_19_0
Workunit	7703256
Created	5 Oct 2020, 3:44:13 UTC
Sent	5 Oct 2020, 4:53:17 UTC
Report deadline	10 Oct 2020, 4:53:17 UTC
Received	5 Oct 2020, 5:59:38 UTC
Server state	Over
Outcome	Computation error
Client state	Compute error
Exit status	-2135228415 (0x80BB0001) Unknown error code
Computer ID	9023
Run time	26 sec
CPU time
Validate state	Invalid
Credit	0.00
Device peak FLOPS	1.00 GFLOPS
Application version	boinc2docker v1.14 (vbox64_mt) windows_x86_64
Peak working set size	11.10 MB
Peak swap size	6.24 MB
Peak disk usage	499.01 MB
Stderr output

<core_client_version>7.16.11</core_client_version>
<![CDATA[
<message>
(unknown error) - exit code 2159738881 (0x80bb0001)</message>
<stderr_txt>
2020-10-05 15:56:12 (18132): Detected: vboxwrapper 26202
2020-10-05 15:56:12 (18132): Detected: BOINC client v7.16.11
2020-10-05 15:56:12 (18132): Detected: VirtualBox VboxManage Interface (Version: 6.1.12)
2020-10-05 15:56:13 (18132): Create VM. (boinc_4cdd86a61c8a6567, slot#18)
2020-10-05 15:56:13 (18132): Updating drive controller type and model for desired configuration.
2020-10-05 15:56:14 (18132): Setting Memory Size for VM. (3072MB)
2020-10-05 15:56:14 (18132): Setting CPU Count for VM. (1)
2020-10-05 15:56:14 (18132): Setting Chipset Options for VM.
2020-10-05 15:56:15 (18132): Setting Boot Options for VM.
2020-10-05 15:56:16 (18132): Setting Network Configuration for NAT.
2020-10-05 15:56:16 (18132): Enabling VM Network Access.
2020-10-05 15:56:16 (18132): Disabling USB Support for VM.
2020-10-05 15:56:17 (18132): Disabling COM Port Support for VM.
2020-10-05 15:56:17 (18132): Disabling LPT Port Support for VM.
2020-10-05 15:56:17 (18132): Disabling Audio Support for VM.
2020-10-05 15:56:17 (18132): Disabling Clipboard Support for VM.
2020-10-05 15:56:18 (18132): Disabling Drag and Drop Support for VM.
2020-10-05 15:56:18 (18132): Adding storage controller(s) to VM.
2020-10-05 15:56:18 (18132): Adding virtual ISO 9660 disk drive to VM. (vm_isocontext.iso)
2020-10-05 15:56:18 (18132): Adding VirtualBox Guest Additions to VM.
2020-10-05 15:56:19 (18132): Adding network bandwidth throttle group to VM. (Defaulting to 1024GB)
2020-10-05 15:56:25 (18132): Error in network throttle group (add) for VM: -2135228415
Command:
VBoxManage -q bandwidthctl "boinc_4cdd86a61c8a6567" add "boinc_4cdd86a61c8a6567_net" --type network --limit 1024G 
Output:
VBoxManage.exe: error: Could not find a registered machine named 'boinc_4cdd86a61c8a6567'
VBoxManage.exe: error: Details: code VBOX_E_OBJECT_NOT_FOUND (0x80bb0001), component VirtualBoxWrap, interface IVirtualBox, callee IUnknown
VBoxManage.exe: error: Context: "FindMachine(Bstr(a->argv[0]).raw(), machine.asOutParam())" at line 320 of file VBoxManageBandwidthControl.cpp

2020-10-05 15:56:25 (18132): Could not create VM
2020-10-05 15:56:25 (18132): ERROR: VM failed to start
2020-10-05 15:56:25 (18132): Powering off VM.
2020-10-05 15:56:25 (18132): Deregistering VM. (boinc_4cdd86a61c8a6567, slot#18)
2020-10-05 15:56:25 (18132): Removing network bandwidth throttle group from VM.
2020-10-05 15:56:26 (18132): Removing VM from VirtualBox.
2020-10-05 15:56:26 (18132): Removing virtual ISO 9660 disk from VirtualBox.

    Hypervisor System Log:

01:03:53.677395          Saving settings file "C:\ProgramData\BOINC\slots\8\boinc_4f795b6576272cf8\boinc_4f795b6576272cf8.vbox" with version "1.16-windows"
01:03:53.885237          Launched VM: 144023296 pid: 12672 (0x3180) frontend: headless name: boinc_4d3d76ad0b936ea9
01:03:53.897838          Saving settings file "C:\ProgramData\BOINC\slots\5\boinc_43c561f7cbc116b4\boinc_43c561f7cbc116b4.vbox" with version "1.16-windows"
01:03:53.920187          Launched VM: 144948400 pid: 3352 (0xd18) frontend: headless name: boinc_46a064a8265b69ea
01:03:53.939604          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={SessionMachine} aText={No storage device attached to device slot 0 on port 1 of controller 'Hard Disk Controller'}, preserve=false aResultDetail=0
01:03:53.939736          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={SessionMachine} aText={No storage device attached to device slot 0 on port 1 of controller 'Hard Disk Controller'}, preserve=false aResultDetail=0
01:03:53.944987          ERROR [COM]: aRC=E_FAIL (0x80004005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={SessionMachine} aText={This machine does not have any snapshots}, preserve=false aResultDetail=0
01:03:54.155142          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={d0a0163f-e254-4e5b-a1f2-011cf991c38d} aComponent={VirtualBoxWrap} aText={Could not find a registered machine named 'boinc_4cdd86a61c8a6567'}, preserve=false aResultDetail=0
01:03:54.188940          Launched VM: 144991248 pid: 9248 (0x2420) frontend: headless name: boinc_4f795b6576272cf8
01:03:55.414744          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={d0a0163f-e254-4e5b-a1f2-011cf991c38d} aComponent={VirtualBoxWrap} aText={Could not find a registered machine named 'boinc_4cdd86a61c8a6567'}, preserve=false aResultDetail=0
01:03:56.326331          Saving settings file "C:\ProgramData\BOINC\slots\10\boinc_45bae4779d017c62\boinc_45bae4779d017c62.vbox" with version "1.16-windows"
01:03:56.676062          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={d0a0163f-e254-4e5b-a1f2-011cf991c38d} aComponent={VirtualBoxWrap} aText={Could not find a registered machine named 'boinc_4cdd86a61c8a6567'}, preserve=false aResultDetail=0
01:03:57.445663          Saving settings file "C:\ProgramData\BOINC\slots\16\boinc_4d3d76ad0b936ea9\boinc_4d3d76ad0b936ea9.vbox" with version "1.16-windows"
01:03:57.459986          Saving settings file "C:\ProgramData\BOINC\slots\13\boinc_46a064a8265b69ea\boinc_46a064a8265b69ea.vbox" with version "1.16-windows"
01:03:57.688462          Saving settings file "C:\ProgramData\BOINC\slots\8\boinc_4f795b6576272cf8\boinc_4f795b6576272cf8.vbox" with version "1.16-windows"
01:03:57.934558          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={d0a0163f-e254-4e5b-a1f2-011cf991c38d} aComponent={VirtualBoxWrap} aText={Could not find a registered machine named 'boinc_4cdd86a61c8a6567'}, preserve=false aResultDetail=0
01:03:59.195191          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={d0a0163f-e254-4e5b-a1f2-011cf991c38d} aComponent={VirtualBoxWrap} aText={Could not find a registered machine named 'boinc_4cdd86a61c8a6567'}, preserve=false aResultDetail=0
01:03:59.459977          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={d0a0163f-e254-4e5b-a1f2-011cf991c38d} aComponent={VirtualBoxWrap} aText={Could not find a registered machine named 'boinc_4cdd86a61c8a6567'}, preserve=false aResultDetail=0
01:03:59.512509          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={d0a0163f-e254-4e5b-a1f2-011cf991c38d} aComponent={VirtualBoxWrap} aText={Could not find a registered machine named 'boinc_4cdd86a61c8a6567'}, preserve=false aResultDetail=0
01:03:59.771372          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={d0a0163f-e254-4e5b-a1f2-011cf991c38d} aComponent={VirtualBoxWrap} aText={Could not find a registered machine named 'boinc_4cdd86a61c8a6567'}, preserve=false aResultDetail=0
01:04:00.030762          ERROR [COM]: aRC=VBOX_E_OBJECT_IN_USE (0x80bb000c) aIID={ad47ad09-787b-44ab-b343-a082a3f2dfb1} aComponent={MediumWrap} aText={Cannot delete storage: medium 'C:\ProgramData\BOINC\slots\18\vm_isocontext.iso' is still attached to the following 8 virtual machine(s): 1eeb70c1-74d0-482d-a3e2-be1edfa71cba, 08e3647f-ffff-4d64-8568-80d023eda1aa, f7fc1a7e-3f49-41ad-bee2-26fc652bbfc8, fc2fa4b9-51cb-4e43-9c8a-e8c1b2046c07, c235fad0-07b3-462d-8741-7badabba2d51, 9f9e9a1d-8982-4d6b-a435-e11a74f2f3f5, 9e42b407-b06e-4f0e-bede-a3c152383dc5, 882d4fea-87f3-4606-8961-a90df2109b48}, preserve=false aResultDetail=0
01:04:00.031090          ERROR [COM]: aRC=VBOX_E_INVALID_OBJECT_STATE (0x80bb0007) aIID={ad47ad09-787b-44ab-b343-a082a3f2dfb1} aComponent={MediumWrap} aText={Storage for the medium 'C:\ProgramData\BOINC\slots\18\vm_isocontext.iso' is already created}, preserve=false aResultDetail=0
01:04:00.032964          ERROR [COM]: aRC=VBOX_E_OBJECT_IN_USE (0x80bb000c) aIID={ad47ad09-787b-44ab-b343-a082a3f2dfb1} aComponent={MediumWrap} aText={Medium 'C:\ProgramData\BOINC\slots\18\vm_isocontext.iso' cannot be closed because it is still attached to 8 virtual machines}, preserve=false aResultDetail=0
01:04:03.984547          Saving settings file "C:\Users\61451\.VirtualBox\VirtualBox.xml" with version "1.12-windows"
01:04:03.990682          Saving settings file "C:\Users\61451\.VirtualBox\VirtualBox.xml" with version "1.12-windows"
01:04:04.002050          Saving settings file "C:\Users\61451\.VirtualBox\VirtualBox.xml" with version "1.12-windows"
01:04:04.010639          Saving settings file "C:\Users\61451\.VirtualBox\VirtualBox.xml" with version "1.12-windows"
01:04:04.016815          Saving settings file "C:\Users\61451\.VirtualBox\VirtualBox.xml" with version "1.12-windows"
01:04:04.177231          Saving settings file "C:\Users\61451\.VirtualBox\VirtualBox.xml" with version "1.12-windows"
01:04:06.619803          Saving settings file "C:\ProgramData\BOINC\slots\9\boinc_35a2e890b74826fe\boinc_35a2e890b74826fe.vbox" with version "1.16-windows"
01:04:07.095587          ERROR [COM]: aRC=E_FAIL (0x80004005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={SessionMachine} aText={This machine does not have any snapshots}, preserve=false aResultDetail=0
01:04:07.150078          Saving settings file "C:\ProgramData\BOINC\slots\9\boinc_35a2e890b74826fe\boinc_35a2e890b74826fe.vbox" with version "1.16-windows"
01:04:07.415276          Saving settings file "C:\Users\61451\.VirtualBox\VirtualBox.xml" with version "1.12-windows"
01:04:07.665515          ERROR [COM]: aRC=VBOX_E_OBJECT_IN_USE (0x80bb000c) aIID={ad47ad09-787b-44ab-b343-a082a3f2dfb1} aComponent={MediumWrap} aText={Cannot delete storage: medium 'C:\ProgramData\BOINC\slots\9\vm_isocontext.iso' is still attached to the following 9 virtual machine(s): 5e69e36c-ec1a-4b8d-badd-e09218ddda40, b6d11b04-6b11-4020-8fa0-03ec2e4627ee, 713b0aed-abf9-4900-ad04-a6e8860597ee, 63069277-dd3e-434f-a39d-8a7a38c5614d, 780339ce-9879-4f15-be7c-8f9ca9a85334, 62842796-e976-4423-9204-27117aa716fa, 398ceb93-7164-481b-96fa-4906fedf7723, 61535468-4f59-469a-9176-3e06e5e72f78, 39343d3f-5834-402f-ab36-169f78ab6f9c}, preserve=false aResultDetail=0
01:04:07.665762          ERROR [COM]: aRC=VBOX_E_INVALID_OBJECT_STATE (0x80bb0007) aIID={ad47ad09-787b-44ab-b343-a082a3f2dfb1} aComponent={MediumWrap} aText={Storage for the medium 'C:\ProgramData\BOINC\slots\9\vm_isocontext.iso' is already created}, preserve=false aResultDetail=0
01:04:07.667680          ERROR [COM]: aRC=VBOX_E_OBJECT_IN_USE (0x80bb000c) aIID={ad47ad09-787b-44ab-b343-a082a3f2dfb1} aComponent={MediumWrap} aText={Medium 'C:\ProgramData\BOINC\slots\9\vm_isocontext.iso' cannot be closed because it is still attached to 9 virtual machines}, preserve=false aResultDetail=0

    VM Execution Log:


    VM Startup Log:


    VM Trace Log:

61c8a6567" --boot1 disk --boot2 dvd --boot3 none --boot4 none 
Exit Code: 0
Output:

2020-10-05 15:56:16 (18132): 
Command: VBoxManage -q modifyvm "boinc_4cdd86a61c8a6567" --nic1 nat --natdnsproxy1 on --cableconnected1 off 
Exit Code: 0
Output:

2020-10-05 15:56:16 (18132): 
Command: VBoxManage -q modifyvm "boinc_4cdd86a61c8a6567" --cableconnected1 on 
Exit Code: 0
Output:

2020-10-05 15:56:17 (18132): 
Command: VBoxManage -q modifyvm "boinc_4cdd86a61c8a6567" --usb off 
Exit Code: 0
Output:

2020-10-05 15:56:17 (18132): 
Command: VBoxManage -q modifyvm "boinc_4cdd86a61c8a6567" --uart1 off --uart2 off 
Exit Code: 0
Output:

2020-10-05 15:56:17 (18132): 
Command: VBoxManage -q modifyvm "boinc_4cdd86a61c8a6567" --lpt1 off --lpt2 off 
Exit Code: 0
Output:

2020-10-05 15:56:17 (18132): 
Command: VBoxManage -q modifyvm "boinc_4cdd86a61c8a6567" --audio none 
Exit Code: 0
Output:

2020-10-05 15:56:18 (18132): 
Command: VBoxManage -q modifyvm "boinc_4cdd86a61c8a6567" --clipboard disabled 
Exit Code: 0
Output:

2020-10-05 15:56:18 (18132): 
Command: VBoxManage -q modifyvm "boinc_4cdd86a61c8a6567" --draganddrop disabled 
Exit Code: 0
Output:

2020-10-05 15:56:18 (18132): 
Command: VBoxManage -q storagectl "boinc_4cdd86a61c8a6567" --name "Hard Disk Controller" --add "sata" --controller "IntelAHCI" --hostiocache off --portcount 3
Exit Code: 0
Output:

2020-10-05 15:56:18 (18132): 
Command: VBoxManage -q storageattach "boinc_4cdd86a61c8a6567" --storagectl "Hard Disk Controller" --port 0 --device 0 --type dvddrive --medium "C:\ProgramData\BOINC\slots\18/vm_isocontext.iso" 
Exit Code: 0
Output:

2020-10-05 15:56:19 (18132): 
Command: VBoxManage -q storageattach "boinc_4cdd86a61c8a6567" --storagectl "Hard Disk Controller" --port 2 --device 0 --type dvddrive --medium "C:\Program Files\Oracle\VirtualBox/VBoxGuestAdditions.iso" 
Exit Code: 0
Output:

2020-10-05 15:56:19 (18132): 
Command: VBoxManage -q bandwidthctl "boinc_4cdd86a61c8a6567" add "boinc_4cdd86a61c8a6567_net" --type network --limit 1024G 
Exit Code: -2135228415
Output:
VBoxManage.exe: error: Could not find a registered machine named 'boinc_4cdd86a61c8a6567'
VBoxManage.exe: error: Details: code VBOX_E_OBJECT_NOT_FOUND (0x80bb0001), component VirtualBoxWrap, interface IVirtualBox, callee IUnknown
VBoxManage.exe: error: Context: "FindMachine(Bstr(a->argv[0]).raw(), machine.asOutParam())" at line 320 of file VBoxManageBandwidthControl.cpp

2020-10-05 15:56:20 (18132): 
Command: VBoxManage -q bandwidthctl "boinc_4cdd86a61c8a6567" add "boinc_4cdd86a61c8a6567_net" --type network --limit 1024G 
Exit Code: -2135228415
Output:
VBoxManage.exe: error: Could not find a registered machine named 'boinc_4cdd86a61c8a6567'
VBoxManage.exe: error: Details: code VBOX_E_OBJECT_NOT_FOUND (0x80bb0001), component VirtualBoxWrap, interface IVirtualBox, callee IUnknown
VBoxManage.exe: error: Context: "FindMachine(Bstr(a->argv[0]).raw(), machine.asOutParam())" at line 320 of file VBoxManageBandwidthControl.cpp

2020-10-05 15:56:21 (18132): 
Command: VBoxManage -q bandwidthctl "boinc_4cdd86a61c8a6567" add "boinc_4cdd86a61c8a6567_net" --type network --limit 1024G 
Exit Code: -2135228415
Output:
VBoxManage.exe: error: Could not find a registered machine named 'boinc_4cdd86a61c8a6567'
VBoxManage.exe: error: Details: code VBOX_E_OBJECT_NOT_FOUND (0x80bb0001), component VirtualBoxWrap, interface IVirtualBox, callee IUnknown
VBoxManage.exe: error: Context: "FindMachine(Bstr(a->argv[0]).raw(), machine.asOutParam())" at line 320 of file VBoxManageBandwidthControl.cpp

2020-10-05 15:56:23 (18132): 
Command: VBoxManage -q bandwidthctl "boinc_4cdd86a61c8a6567" add "boinc_4cdd86a61c8a6567_net" --type network --limit 1024G 
Exit Code: -2135228415
Output:
VBoxManage.exe: error: Could not find a registered machine named 'boinc_4cdd86a61c8a6567'
VBoxManage.exe: error: Details: code VBOX_E_OBJECT_NOT_FOUND (0x80bb0001), component VirtualBoxWrap, interface IVirtualBox, callee IUnknown
VBoxManage.exe: error: Context: "FindMachine(Bstr(a->argv[0]).raw(), machine.asOutParam())" at line 320 of file VBoxManageBandwidthControl.cpp

2020-10-05 15:56:24 (18132): 
Command: VBoxManage -q bandwidthctl "boinc_4cdd86a61c8a6567" add "boinc_4cdd86a61c8a6567_net" --type network --limit 1024G 
Exit Code: -2135228415
Output:
VBoxManage.exe: error: Could not find a registered machine named 'boinc_4cdd86a61c8a6567'
VBoxManage.exe: error: Details: code VBOX_E_OBJECT_NOT_FOUND (0x80bb0001), component VirtualBoxWrap, interface IVirtualBox, callee IUnknown
VBoxManage.exe: error: Context: "FindMachine(Bstr(a->argv[0]).raw(), machine.asOutParam())" at line 320 of file VBoxManageBandwidthControl.cpp

2020-10-05 15:56:25 (18132): 
Command: VBoxManage -q bandwidthctl "boinc_4cdd86a61c8a6567" add "boinc_4cdd86a61c8a6567_net" --type network --limit 1024G 
Exit Code: -2135228415
Output:
VBoxManage.exe: error: Could not find a registered machine named 'boinc_4cdd86a61c8a6567'
VBoxManage.exe: error: Details: code VBOX_E_OBJECT_NOT_FOUND (0x80bb0001), component VirtualBoxWrap, interface IVirtualBox, callee IUnknown
VBoxManage.exe: error: Context: "FindMachine(Bstr(a->argv[0]).raw(), machine.asOutParam())" at line 320 of file VBoxManageBandwidthControl.cpp

2020-10-05 15:56:25 (18132): 
Command: VBoxManage -q snapshot "boinc_4cdd86a61c8a6567" list 
Exit Code: -2135228415
Output:
VBoxManage.exe: error: Could not find a registered machine named 'boinc_4cdd86a61c8a6567'
VBoxManage.exe: error: Details: code VBOX_E_OBJECT_NOT_FOUND (0x80bb0001), component VirtualBoxWrap, interface IVirtualBox, callee IUnknown
VBoxManage.exe: error: Context: "FindMachine(bstrMachine.raw(), pMachine.asOutParam())" at line 333 of file VBoxManageSnapshot.cpp

2020-10-05 15:56:26 (18132): 
Command: VBoxManage -q bandwidthctl "boinc_4cdd86a61c8a6567" remove "boinc_4cdd86a61c8a6567_net" 
Exit Code: -2135228415
Output:
VBoxManage.exe: error: Could not find a registered machine named 'boinc_4cdd86a61c8a6567'
VBoxManage.exe: error: Details: code VBOX_E_OBJECT_NOT_FOUND (0x80bb0001), component VirtualBoxWrap, interface IVirtualBox, callee IUnknown
VBoxManage.exe: error: Context: "FindMachine(Bstr(a->argv[0]).raw(), machine.asOutParam())" at line 320 of file VBoxManageBandwidthControl.cpp

2020-10-05 15:56:26 (18132): 
Command: VBoxManage -q unregistervm "boinc_4cdd86a61c8a6567" --delete 
Exit Code: -2135228415
Output:
VBoxManage.exe: error: Could not find a registered machine named 'boinc_4cdd86a61c8a6567'
VBoxManage.exe: error: Details: code VBOX_E_OBJECT_NOT_FOUND (0x80bb0001), component VirtualBoxWrap, interface IVirtualBox, callee IUnknown
VBoxManage.exe: error: Context: "FindMachine(Bstr(VMName).raw(), machine.asOutParam())" at line 150 of file VBoxManageMisc.cpp

2020-10-05 15:56:26 (18132): 
Command: VBoxManage -q closemedium dvd "C:\ProgramData\BOINC\slots\18/vm_isocontext.iso" --delete 
Exit Code: -2135228404
Output:
VBoxManage.exe: error: Cannot delete storage: medium 'C:\ProgramData\BOINC\slots\18\vm_isocontext.iso' is still attached to the following 8 virtual machine(s): 1eeb70c1-74d0-482d-a3e2-be1edfa71cba, 08e3647f-ffff-4d64-8568-80d023eda1aa, f7fc1a7e-3f49-41ad-bee2-26fc652bbfc8, fc2fa4b9-51cb-4e43-9c8a-e8c1b2046c07, c235fad0-07b3-462d-8741-7badabba2d51, 9f9e9a1d-8982-4d6b-a435-e11a74f2f3f5, 9e42b407-b06e-4f0e-bede-a3c152383dc5, 882d4fea-87f3-4606-8961-a90df2109b48
VBoxManage.exe: error: Details: code VBOX_E_OBJECT_IN_USE (0x80bb000c), component MediumWrap, interface IMedium, callee IUnknown
VBoxManage.exe: error: Context: "DeleteStorage(pProgress.asOutParam())" at line 1727 of file VBoxManageDisk.cpp
VBoxManage.exe: error: Failed to delete medium. Error code Unknown Status -2135228404 (0x80bb000c)
VBoxManage.exe: error: Medium 'C:\ProgramData\BOINC\slots\18\vm_isocontext.iso' cannot be closed because it is still attached to 8 virtual machines
VBoxManage.exe: error: Details: code VBOX_E_OBJECT_IN_USE (0x80bb000c), component MediumWrap, interface IMedium, callee IUnknown
VBoxManage.exe: error: Context: "Close()" at line 1736 of file VBoxManageDisk.cpp

15:56:36 (18132): called boinc_finish(-2135228415)

</stderr_txt>
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