pants bsp interaction hanging on compile

bsp-interaction-debug-log.txt

[bloop-compile]
                     21:35:30 [DEBUG] pants.java.executor:pid=26932: Executing: /Users/dmcclanahan/Downloads/openjdk1.8.0_202-jvmci-0.59/Contents/Home/bin/java -cp /Users/dmcclanahan/workspace/s3/.pants.d/ng/BloopCompile_bloop_bloop_compile/tmpkGwduV.jar pants.contrib.bloop.compile.PantsCompileMain debug -- macaw.macaw-test.macaw-test macaw.macaw-test.tests macaw.macaw-test.src.test.scala.scala macaw.macaw-test.src.test.thrift.thrift-scala macaw.macaw-test.src.main.scala.scala .pants.d.gen.scrooge.55f6998c5e42.macaw.m.837d4a355d20a4bb.w.macaw-test.src.test.thrift.thrift-scala args={} at cwd=/Users/dmcclanahan/workspace/s3
Starting the bsp launcher for bloop...
                     A bloop installation has been detected either in the PATH or $HOME/.bloop
                     Opening a bsp server connection with 'bloop bsp --protocol local --socket /var/folders/_r/gknsp2dd6bs3k1y9s6btxbyc0000gn/T/bsp-launcher8059555547206668069/bsp.socket'...
                     Waiting 200ms until the bsp connection is up...
                     Starting thread that pumps stdin and redirects it to the bsp server...
                     Starting thread that pumps server stdout and redirects it to the client stdout...
                     [debug]  --> {
                       "method" : "build/initialize",
                       "params" : {
                         "displayName" : "pants-bloop-client",
                         "version" : "1.3.2",
                         "bspVersion" : "2.0.0-M4",
                         "rootUri" : "file:///Users/dmcclanahan/workspace/s3/",
                         "capabilities" : {
                           "languageIds" : [
                             "scala",
                             "java"
                           ]
                         },
                         "data" : null
                       },
                       "id" : "2",
                       "jsonrpc" : "2.0"
                     }
                     [info] initializeResult: InitializeBuildResult(bloop,1.3.2,2.0.0-M4,BuildServerCapabilities(Some(CompileProvider(List(scala, java))),Some(TestProvider(List(scala, java))),Some(RunProvider(List(scala, java))),Some(true),Some(true),Some(false),Some(false)),None)
                     [debug]  --> {
                       "method" : "build/initialized",
                       "params" : {

                       },
                       "jsonrpc" : "2.0"
                     }
                     [debug]  --> {
                       "method" : "workspace/buildTargets",
                       "params" : {

                       },
                       "id" : "3",
                       "jsonrpc" : "2.0"
                     }
                     [info] matchingTargets: List(.pants.d.gen.scrooge.55f6998c5e42.macaw.m.837d4a355d20a4bb.w.macaw-test.src.test.thrift.thrift-scala, macaw.macaw-test.src.main.scala.scala)
                     [debug]  --> {
                       "method" : "buildTarget/compile",
                       "params" : {
                         "targets" : [
                           {
                             "uri" : "file:/Users/dmcclanahan/workspace/s3/?id=.pants.d.gen.scrooge.55f6998c5e42.macaw.m.837d4a355d20a4bb.w.macaw-test.src.test.thrift.thrift-scala"
                           },
                           {
                             "uri" : "file:/Users/dmcclanahan/workspace/s3/?id=macaw.macaw-test.src.main.scala.scala"
                           }
                         ],
                         "originId" : null,
                         "arguments" : null
                       },
                       "id" : "4",
                       "jsonrpc" : "2.0"
                     }

jvmtop-output-bloop.txt

JvmTop 0.8.0 alpha - 14:48:06, x86_64, 12 cpus, Mac OS X 10.14., load avg 6.21
 http://code.google.com/p/jvmtop

 Profiling PID 23816: /usr/local/Cellar/bloop/1.3.2/bin/blp-co

  80.14% (    23.64s) scala.runtime.BoxesRunTime.equals2()
   4.05% (     1.19s) bloop.engine.Dag$$$Lambda$1590/172953824.apply()
   3.24% (     0.96s) scala.collection.LinearSeqOptimized.foldLeft()
   1.71% (     0.51s) scala.collection.mutable.HashTable$HashUtils.improve()
   1.68% (     0.50s) scala.collection.SetLike.$anonfun$$plus$plus$1()
   1.64% (     0.48s) scala.collection.immutable.HashSet.$plus()
   1.23% (     0.36s) scala.collection.mutable.HashSet.elemToEntry()
   1.07% (     0.32s) ...la.collection.generic.Subtractable$$Lambda$1593/13871()
   0.85% (     0.25s) scala.collection.TraversableLike.to()
   0.67% (     0.20s) scala.collection.LinearSeqOptimized.foldLeft$()
   0.66% (     0.19s) scala.collection.TraversableOnce.nonEmpty()
   0.65% (     0.19s) scala.collection.mutable.Builder.sizeHint()
   0.59% (     0.17s) scala.collection.mutable.SetBuilder.$plus$eq()
   0.47% (     0.14s) scala.collection.SetLike.$plus$plus()
   0.29% (     0.08s) scala.collection.mutable.HashSet.addEntry()
   0.28% (     0.08s) scala.collection.TraversableOnce.foldLeft()
   0.10% (     0.03s) scala.collection.immutable.$colon$colon.tail()
   0.10% (     0.03s) scala.collection.TraversableOnce.$anonfun$foldLeft$1()
   0.10% (     0.03s) scala.runtime.Statics.anyHash()
   0.09% (     0.03s) scala.collection.generic.Growable.loop$1()