log.txt

$ RUST_LOG=trace probe-rs-cli info --probe c251:f001
 TRACE probe_rs::probe::cmsisdap::tools > Attempting to open device matching c251:f001
 TRACE probe_rs::probe::cmsisdap::tools > Trying device Bus 002 Device 001: ID 1d6b:0003
 TRACE probe_rs::probe::cmsisdap::tools > Error opening: Access
 TRACE probe_rs::probe::cmsisdap::tools > Trying device Bus 001 Device 003: ID 0489:e0a2
 TRACE probe_rs::probe::cmsisdap::tools > Error getting languages: Pipe
 TRACE probe_rs::probe::cmsisdap::tools > Trying device Bus 001 Device 002: ID 0bda:58f4
 TRACE probe_rs::probe::cmsisdap::tools > Error opening: Access
 TRACE probe_rs::probe::cmsisdap::tools > Trying device Bus 001 Device 007: ID c251:f001
 TRACE probe_rs::probe::cmsisdap::tools > Error opening: Access
 TRACE probe_rs::probe::cmsisdap::tools > Trying device Bus 001 Device 001: ID 1d6b:0002
 TRACE probe_rs::probe::cmsisdap::tools > Error opening: Access
 DEBUG probe_rs::probe::cmsisdap::tools > Attempting to open c251:f001 in CMSIS-DAP v1 mode
Error: Failed to open the debug probe.

Caused by:
    0: Probe could not be created
    1: hidapi error: Permission denied
    2: hidapi error: Permission denied

lsusb.txt

$ sudo lsusb -vv -d c251:f001

Bus 003 Device 002: ID c251:f001 Keil Software, Inc. CMSIS_DAP
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass          239 Miscellaneous Device
  bDeviceSubClass         2 
  bDeviceProtocol         1 Interface Association
  bMaxPacketSize0        64
  idVendor           0xc251 Keil Software, Inc.
  idProduct          0xf001 
  bcdDevice            1.00
  iManufacturer           1 CMSIS-DAP by ARM
  iProduct                2 CMSIS_DAP
  iSerial                 3 202108120001
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x006b
    bNumInterfaces          3
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Association:
      bLength                 8
      bDescriptorType        11
      bFirstInterface         0
      bInterfaceCount         2
      bFunctionClass          2 Communications
      bFunctionSubClass       2 Abstract (modem)
      bFunctionProtocol       1 AT-commands (v.25ter)
      iFunction               4 CMSIS-DAP CDC
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         2 Communications
      bInterfaceSubClass      2 Abstract (modem)
      bInterfaceProtocol      0 
      iInterface              4 CMSIS-DAP CDC
      CDC Header:
        bcdCDC               1.10
      CDC Call Management:
        bmCapabilities       0x01
          call management
        bDataInterface          1
      CDC ACM:
        bmCapabilities       0x02
          line coding and serial state
      CDC Union:
        bMasterInterface        0
        bSlaveInterface         1 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               2
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass        10 CDC Data
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 
      iInterface              5 CMSIS-DAP DCI
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 
      iInterface              6 CMSIS-DAP-QYF
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.00
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      33
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x03  EP 3 OUT
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1
can't get device qualifier: Resource temporarily unavailable
can't get debug descriptor: Resource temporarily unavailable
Device Status:     0x0000
  (Bus Powered)

output2.txt

[root@notyourlaptop midi]# RUST_LOG=trace /home/pedro/.cargo/bin/probe-rs-cli info --probe c251:f001
 TRACE probe_rs::probe::cmsisdap::tools > Attempting to open device matching c251:f001
 TRACE probe_rs::probe::cmsisdap::tools > Trying device Bus 002 Device 001: ID 1d6b:0003
 TRACE probe_rs::probe::cmsisdap::tools > Trying device Bus 001 Device 003: ID 0489:e0a2
 TRACE probe_rs::probe::cmsisdap::tools > Error getting languages: Pipe
 TRACE probe_rs::probe::cmsisdap::tools > Trying device Bus 001 Device 002: ID 0bda:58f4
 TRACE probe_rs::probe::cmsisdap::tools > Trying device Bus 001 Device 008: ID c251:f001
 TRACE probe_rs::probe::cmsisdap::tools > Trying device Bus 001 Device 001: ID 1d6b:0002
 DEBUG probe_rs::probe::cmsisdap::tools > Attempting to open c251:f001 in CMSIS-DAP v1 mode
 DEBUG probe_rs::probe::stlink::usb_interface > Acquired libusb context.
 DEBUG jaylink                                > libusb 1.0.24.11584
 DEBUG jaylink                                > libusb has capability API: true
 DEBUG jaylink                                > libusb has HID access: true
 DEBUG jaylink                                > libusb has hotplug support: true
 DEBUG jaylink                                > libusb can detach kernel driver: true
 DEBUG probe_rs::probe::espusbjtag::protocol  > Acquired libusb context.
Error: Failed to open the debug probe.

Caused by:
    0: Probe could not be created
    1: Probe was not found.