Catch interrupted exceptions in blockUntilNextExec

It is possible for an InterruptedException to be thrown here because of
logic in NetworkClient. This seemed to be the root cause of the fix I
tried in ca251eb7c8 so I'm reverting that
commit.

Revert "Catch interrupted exception in shell"

This reverts commit ca251eb7c8.

main/src/main/scala/sbt/Main.scala

@@ -1041,19 +1041,17 @@ object BuiltinCommands {
         .extract(s1)
         .getOpt(Keys.minForcegcInterval)
         .getOrElse(GCUtil.defaultMinForcegcInterval)
-      try {
-        val exec: Exec = getExec(s1, minGCInterval)
-        val newState = s1
-          .copy(
-            onFailure = Some(Exec(Shell, None)),
-            remainingCommands = exec +: Exec(Shell, None) +: s1.remainingCommands
-          )
-          .setInteractive(true)
-        val res =
-          if (exec.commandLine.trim.isEmpty) newState
-          else newState.clearGlobalLog
-        res
-      } catch { case _: InterruptedException => s1.exit(true) }
+      val exec: Exec = getExec(s1, minGCInterval)
+      val newState = s1
+        .copy(
+          onFailure = Some(Exec(Shell, None)),
+          remainingCommands = exec +: Exec(Shell, None) +: s1.remainingCommands
+        )
+        .setInteractive(true)
+      val res =
+        if (exec.commandLine.trim.isEmpty) newState
+        else newState.clearGlobalLog
+      res
     }
   }
 

main/src/main/scala/sbt/internal/CommandExchange.scala

@@ -91,7 +91,7 @@ private[sbt] final class CommandExchange {
           case s @ Seq(_, _) => Some(s.min)
           case s             => s.headOption
         }
-        Option(deadline match {
+        try Option(deadline match {
           case Some(d: Deadline) =>
             commandQueue.poll(d.timeLeft.toMillis + 1, TimeUnit.MILLISECONDS) match {
               case null if idleDeadline.fold(false)(_.isOverdue) =>
@@ -106,6 +106,7 @@ private[sbt] final class CommandExchange {
             }
           case _ => commandQueue.take
         })
+        catch { case _: InterruptedException => None }
       }
       poll match {
         case Some(exec) if exec.source.fold(true)(s => channels.exists(_.name == s.channelName)) =>