Scala sbt Hello World引发未知信息转换异常：转换='；0'；

我试图按照中给出的说明创建一个hello world

现在我进入刚刚创建的“hello”目录并运行“sbt”

首先，当生成的build.sbt文件在“inThisBuild”设置下指定了“scalaVersion”2.12.1时，我不知道构建工具为什么使用scala-2.10

其次，主要问题是，如何调试和修复

UnknownFormatConversionException: Conversion = '0'

不知道如何通过“你好，世界！”的例子

$ sbt
[info] Loading project definition from /Users/pankaj/Work/Code/learn/hello/project
[info] Updating {file:/Users/pankaj/Work/Code/learn/hello/project/}hello-build...
[info] Resolving org.scala-sbt.ivy#ivy;2.3.0-sbt-2cf13e211b2cb31f0d3b317289dca70[info] Resolving org.fusesource.jansi#jansi;1.4 ...
[info] Done updating.
[info] Compiling 1 Scala source to /Users/pankaj/Work/Code/learn/hello/project/target/scala-2.10/sbt-0.13/classes...
java.util.UnknownFormatConversionException: Conversion = '0'
at java.util.Formatter.checkText(Formatter.java:2579)
at java.util.Formatter.parse(Formatter.java:2565)
at java.util.Formatter.format(Formatter.java:2501)
…
…
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)
[error] (compile:compile) java.util.UnknownFormatConversionException: Conversion = '0'
Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore? q
$ 

UnknownFormatConversionException: Conversion = '0'