Uploading to UNO R3 fails: "exit status 1"

Using Arduino Avrdude, stk500, Bootloader issues
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After doing the above test here are some additional points

  1. Do you have anything connected to the pins 0 and 1? This will interfere with the upload. Disconnect it.
  2. Do you have anything else connected to the Uno? This might consume to much power. Disconnect it.
  3. If your Uno does not use the CH340 serial-to-usb converter for communication with the PC, you can run the loopback test: Loop-Back Test Instructions.