Custom Library No such file or directory

./opt/arduino-builder/arduino-builder -compile -core-api-version 10611 -hardware opt/arduino-builder/hardware -hardware ./opt/cores -tools opt/arduino-builder/tools -tools ./opt/tools -built-in-libraries opt/libraries/latest -logger humantags -fqbn arduino:avr:uno -build-cache /tmp -build-path /tmp/777816859/build -verbose -libraries /tmp/777816859/custom -libraries /tmp/777816859/pinned /tmp/777816859/MotorTest

Using board 'uno' from platform in folder: /home/ubuntu/opt/cores/arduino/avr

Using core 'arduino' from platform in folder: /home/ubuntu/opt/cores/arduino/avr

Detecting libraries used...

/home/ubuntu/opt/tools/avr-gcc/4.9.2-atmel3.5.4-arduino2/bin/avr-g++ -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10611 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -I/home/ubuntu/opt/cores/arduino/avr/cores/arduino -I/home/ubuntu/opt/cores/arduino/avr/variants/standard /tmp/777816859/build/sketch/MotorTest.ino.cpp -o /dev/null

/tmp/777816859/MotorTest/MotorTest.ino:2:21: fatal error: UCMotor.h: No such file or directory

#include <UCMotor.h>

^

compilation terminated.

exit status 1