Crash report: Error: No device found in bootloader mode

[tessel-crashbot]

Error: No device found in bootloader mode
    at t2-cli\lib\usb-connection.js:367:19
    at USB.Connection._findBootedDeviceBySerialNumber (t2-cli\lib\usb-connection.js:351:10)
    at Timeout.retry [as _onTimeout] (t2-cli\lib\usb-connection.js:328:12)
    at ontimeout (timers.js:386:11)
    at tryOnTimeout (timers.js:250:5)
    at Timer.listOnTimeout (timers.js:214:5)

Full report is at 0x7cdfdb820ee06d95