debug:  Error: Command failed: adb -P 5038 shell echo 1
error: no devices/emulators found

    at ChildProcess.exithandler (child_process.js:282:12)
    at emitTwo (events.js:125:13)
    at ChildProcess.emit (events.js:213:7)
    at maybeClose (internal/child_process.js:921:16)
    at Socket.stream.socket.on (internal/child_process.js:348:11)
    at emitOne (events.js:115:13)
    at Socket.emit (events.js:210:7)
    at Pipe._handle.close [as _onclose] (net.js:549:12)
debug: checking password
debug: checking password
debug: correct password
debug: fastboot: wait for device
debug: correct password
debug: fastboot: wait for device
info: Download startCheck
info: Download startCheck
info: checked: recovery-krillin.img
info: Exists /home/tom/.cache/ubports/images/krillin/recovery-krillin.img
info: Download complete
info: done downloading(once listener)
debug: fastboot: flash; [object Object]
info: checked: recovery-krillin.img
info: Exists /home/tom/.cache/ubports/images/krillin/recovery-krillin.img
info: Download complete
info: done downloading(once listener)
debug: fastboot: flash; [object Object]
error: Devices: Error: Fastboot: Unknown error:  target reported max download size of 134217728 bytes
sending 'recovery' (9578 KB)...
OKAY [  0.347s]
writing 'recovery'...
FAILED (remote: download for partition 'recovery' is not allowed
)
finished. total time: 0.350s

error: Devices: Error: Fastboot: Unknown error:  < waiting for any device >
target reported max download size of 134217728 bytes
sending 'recovery' (9578 KB)...
OKAY [  0.356s]
writing 'recovery'...
FAILED (remote: download for partition 'recovery' is not allowed
)
finished. total time: 0.359s