diff --git a/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/ContextUtil.scala b/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/ContextUtil.scala
index ee3b56361..b9b968a23 100644
--- a/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/ContextUtil.scala
+++ b/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/ContextUtil.scala
@@ -3,7 +3,6 @@ package appmacro
 
 import scala.reflect._
 import macros._
-import scala.tools.nsc.Global
 import ContextUtil.{ DynamicDependencyError, DynamicReferenceError }
 
 object ContextUtil {
diff --git a/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/Instance.scala b/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/Instance.scala
index 3177d59c4..a10fdfb18 100644
--- a/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/Instance.scala
+++ b/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/Instance.scala
@@ -23,7 +23,6 @@ trait MonadInstance extends Instance {
 
 import scala.reflect._
 import macros._
-import reflect.internal.annotations.compileTimeOnly
 
 object Instance {
   final val ApplyName = "app"
diff --git a/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/KListBuilder.scala b/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/KListBuilder.scala
index cab5058cb..65b061e66 100644
--- a/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/KListBuilder.scala
+++ b/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/KListBuilder.scala
@@ -1,8 +1,6 @@
 package sbt.internal.util
 package appmacro
 
-import Types.Id
-import scala.tools.nsc.Global
 import scala.reflect._
 import macros._
 
@@ -59,7 +57,6 @@ object KListBuilder extends TupleBuilder {
     val klistType: Type = (inputs :\ knilType)((in, klist) => kconsType(in.tpe, klist))
 
     val representationC = internal.polyType(tcVariable :: Nil, klistType)
-    val resultType = appliedType(representationC, idTC :: Nil)
     val input = klist
     val alistInstance: ctx.universe.Tree = TypeApply(select(Ident(alist), "klist"), TypeTree(representationC) :: Nil)
     def extract(param: ValDef) = bindKList(param, Nil, inputs.map(_.local))
diff --git a/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/TupleBuilder.scala b/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/TupleBuilder.scala
index c36baa78a..1186f3549 100644
--- a/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/TupleBuilder.scala
+++ b/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/TupleBuilder.scala
@@ -1,8 +1,6 @@
 package sbt.internal.util
 package appmacro
 
-import Types.Id
-import scala.tools.nsc.Global
 import scala.reflect._
 import macros._
 
diff --git a/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/TupleNBuilder.scala b/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/TupleNBuilder.scala
index f902db25e..1c5430e4c 100644
--- a/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/TupleNBuilder.scala
+++ b/internal/util-appmacro/src/main/scala/sbt/internal/util/appmacro/TupleNBuilder.scala
@@ -1,7 +1,6 @@
 package sbt.internal.util
 package appmacro
 
-import Types.Id
 import scala.tools.nsc.Global
 import scala.reflect._
 import macros._
@@ -17,11 +16,10 @@ object TupleNBuilder extends TupleBuilder {
 
   def make(c: blackbox.Context)(mt: c.Type, inputs: Inputs[c.universe.type]): BuilderResult[c.type] = new BuilderResult[c.type] {
     val util = ContextUtil[c.type](c)
-    import c.universe.{ Apply => ApplyTree, _ }
+    import c.universe._
     import util._
 
     val global: Global = c.universe.asInstanceOf[Global]
-    val mTC: Type = mt.asInstanceOf[c.universe.Type]
 
     val ctx: c.type = c
     val representationC: PolyType = {
@@ -30,7 +28,6 @@ object TupleNBuilder extends TupleBuilder {
       val tuple = global.definitions.tupleType(tupleTypeArgs)
       internal.polyType(tcVariable :: Nil, tuple.asInstanceOf[Type])
     }
-    val resultType = appliedType(representationC, idTC :: Nil)
 
     val input: Tree = mkTuple(inputs.map(_.expr))
     val alistInstance: Tree = {