As given in other answers. I have properly set the value of http proxy host and port. but it is giving the following error
Getting org.scala-sbt sbt 0.13.6 ...
You probably access the destination server through a proxy server that is not well configured. You probably access the destination server through a proxy server that is not well configured. You probably access the destination server through a proxy server that is not well configured.
:: problems summary :: :::: WARNINGS Host repo.typesafe.com not found. url=https://repo.typesafe.com/typesafe/ivy-releases/org.scala-sbt/sbt/0.13.6/ivys/ivy.xml
Host repo1.maven.org not found. url=https://repo1.maven.org/maven2/org/scala-sbt/sbt/0.13.6/sbt-0.13.6.pom
Host repo1.maven.org not found. url=https://repo1.maven.org/maven2/org/scala-sbt/sbt/0.13.6/sbt-0.13.6.jar
module not found: org.scala-sbt#sbt;0.13.6
==== local: tried
/home/vibhanshu/.ivy2/local/org.scala-sbt/sbt/0.13.6/ivys/ivy.xml
-- artifact org.scala-sbt#sbt;0.13.6!sbt.jar:
/home/vibhanshu/.ivy2/local/org.scala-sbt/sbt/0.13.6/jars/sbt.jar
==== typesafe-ivy-releases: tried
https://repo.typesafe.com/typesafe/ivy-releases/org.scala-sbt/sbt/0.13.6/ivys/ivy.xml
==== Maven Central: tried
https://repo1.maven.org/maven2/org/scala-sbt/sbt/0.13.6/sbt-0.13.6.pom
-- artifact org.scala-sbt#sbt;0.13.6!sbt.jar:
https://repo1.maven.org/maven2/org/scala-sbt/sbt/0.13.6/sbt-0.13.6.jar
::::::::::::::::::::::::::::::::::::::::::::::
:: UNRESOLVED DEPENDENCIES ::
::::::::::::::::::::::::::::::::::::::::::::::
:: org.scala-sbt#sbt;0.13.6: not found
::::::::::::::::::::::::::::::::::::::::::::::
:: USE VERBOSE OR DEBUG MESSAGE LEVEL FOR MORE DETAILS unresolved dependency: org.scala-sbt#sbt;0.13.6: not found Error during sbt execution: Error retrieving required libraries (see /home/vibhanshu/.sbt/boot/update.log for complete log) Error: Could not retrieve sbt 0.13.6