sbt compile

In the last 10 seconds, 9.047 (98.3%) were spent in GC. [Heap: 0.12GB free of 0.89GB, max 0.89GB] 
Consider increasing the JVM heap using `-Xmx` or try a different collector, e.g. `-XX:+UseG1GC`, for better performance.

export SBT_OPTS="-Xmx4096M  -XX:+UseG1GC"

sbt compile -J-Xmx4G -J-XX:+UseG1GC

sbt compile  -J-Xmx4G  -J-XX:+UseG1GC -Dsbt.coursier=false

coursier 能加速sbt依赖下载，但之前play升级后 ，如果不禁用，无法导入bi项目
原因未知