sbt run error with unresolved dependency

[Qinghe12]

There are some problems When I excuted cmd according guide as following：

./build/sbt help

Using jdk8u275-b01 as default JAVA_HOME.
Note, this will be overridden by -java-home if it is set.
OpenJDK 64-Bit Server VM warning: ignoring option MaxPermSize=512m; support was removed in 8.0
Getting org.scala-sbt sbt 0.13.18 (this may take some time)...

:: problems summary ::
:::: WARNINGS
Your proxy requires authentication.

    Your proxy requires authentication.

    Your proxy requires authentication.

    Your proxy requires authentication.

            module not found: org.scala-sbt#sbt;0.13.18

    ==== local: tried

      /root/.ivy2/local/org.scala-sbt/sbt/0.13.18/ivys/ivy.xml

      -- artifact org.scala-sbt#sbt;0.13.18!sbt.jar:

      /root/.ivy2/local/org.scala-sbt/sbt/0.13.18/jars/sbt.jar

    ==== sbt-releases-repo: tried

      http://repo.typesafe.com/typesafe/ivy-releases/org.scala-sbt/sbt/0.13.18/ivys/ivy.xml

    ==== sbt-plugins-repo: tried

      http://repo.scala-sbt.org/scalasbt/sbt-plugin-releases/org.scala-sbt/sbt/0.13.18/ivys/ivy.xml

    ==== maven-central: tried

      http://repo1.maven.org/maven2/org/scala-sbt/sbt/0.13.18/sbt-0.13.18.pom

      -- artifact org.scala-sbt#sbt;0.13.18!sbt.jar:

      http://repo1.maven.org/maven2/org/scala-sbt/sbt/0.13.18/sbt-0.13.18.jar

            ::::::::::::::::::::::::::::::::::::::::::::::

            ::          UNRESOLVED DEPENDENCIES         ::

            ::::::::::::::::::::::::::::::::::::::::::::::

            :: org.scala-sbt#sbt;0.13.18: not found

            ::::::::::::::::::::::::::::::::::::::::::::::

:: USE VERBOSE OR DEBUG MESSAGE LEVEL FOR MORE DETAILS
unresolved dependency: org.scala-sbt#sbt;0.13.18: not found
Error during sbt execution: Error retrieving required libraries
(see /root/.sbt/boot/update.log for complete log)
Error: Could not retrieve sbt 0.13.18

Is there any config that I need to debug?