diff --git a/distribution/lib/Standard/Base/0.0.0-dev/src/IO.enso b/distribution/lib/Standard/Base/0.0.0-dev/src/IO.enso
index 42c3e2d05fa0..2eb01a09aef7 100644
--- a/distribution/lib/Standard/Base/0.0.0-dev/src/IO.enso
+++ b/distribution/lib/Standard/Base/0.0.0-dev/src/IO.enso
@@ -2,6 +2,8 @@ import project.Any.Any
 import project.Data.Text.Text
 import project.Nothing.Nothing
 
+from project.Data.Boolean import Boolean, False
+
 ## PRIVATE
    ADVANCED
    Prints the provided message to standard error.
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/io/PrintlnNode.java b/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/io/PrintlnNode.java
index 22abe24ac061..8b8411af767f 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/io/PrintlnNode.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/io/PrintlnNode.java
@@ -9,6 +9,7 @@
 import com.oracle.truffle.api.library.CachedLibrary;
 import com.oracle.truffle.api.nodes.Node;
 import org.enso.interpreter.dsl.AcceptsError;
+import org.enso.interpreter.dsl.AcceptsWarning;
 import org.enso.interpreter.dsl.BuiltinMethod;
 import org.enso.interpreter.node.callable.InvokeCallableNode;
 import org.enso.interpreter.runtime.EnsoContext;
@@ -31,7 +32,7 @@ public abstract class PrintlnNode extends Node {
           InvokeCallableNode.DefaultsExecutionMode.EXECUTE,
           InvokeCallableNode.ArgumentsExecutionMode.PRE_EXECUTED);
 
-  abstract Object execute(VirtualFrame frame, State state, @AcceptsError Object message);
+  abstract Object execute(VirtualFrame frame, State state, @AcceptsWarning @AcceptsError Object message, boolean warnings);
 
   @Specialization(guards = {"strings.isString(message)", "!hasWarningsToPrint(warningsLibrary, warnings, message)"})
   Object doPrintText(
@@ -105,7 +106,7 @@ Object doPrintWithWarnings(
     return ctx.getNothing();
   }
 
-  private static boolean hasWarningsToPrint(WarningsLibrary warningsLibrary, boolean shouldPrintWarnings, Object obj) {
+  static boolean hasWarningsToPrint(WarningsLibrary warningsLibrary, boolean shouldPrintWarnings, Object obj) {
     return shouldPrintWarnings && warningsLibrary.hasWarnings(obj);
   }
 
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/meta/EqualsNode.java b/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/meta/EqualsNode.java
index bb6ed4c1c563..85c2a85be46e 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/meta/EqualsNode.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/meta/EqualsNode.java
@@ -322,17 +322,13 @@ boolean equalsWithWarnings(Object selfWithWarnings, Object otherWithWarnings,
                              @CachedLibrary("otherWithWarnings") WarningsLibrary otherWarnLib,
                              @Cached EqualsNode equalsNode
   ) {
-    try {
-      Object self =
+    Object self =
           selfWarnLib.hasWarnings(selfWithWarnings) ? selfWarnLib.removeWarnings(selfWithWarnings)
               : selfWithWarnings;
-      Object other =
+    Object other =
           otherWarnLib.hasWarnings(otherWithWarnings) ? otherWarnLib.removeWarnings(otherWithWarnings)
               : otherWithWarnings;
-      return equalsNode.execute(self, other);
-    } catch (UnsupportedMessageException e) {
-      throw new IllegalStateException(e);
-    }
+    return equalsNode.execute(self, other);
   }
 
   /** Interop libraries **/
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/meta/HashCodeNode.java b/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/meta/HashCodeNode.java
index 7fc7b75fe8f8..de273bac6463 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/meta/HashCodeNode.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/meta/HashCodeNode.java
@@ -266,11 +266,7 @@ long hashCodeForWarning(
       Object selfWithWarning,
       @CachedLibrary("selfWithWarning") WarningsLibrary warnLib,
       @Cached HashCodeNode hashCodeNode) {
-    try {
-      return hashCodeNode.execute(warnLib.removeWarnings(selfWithWarning));
-    } catch (UnsupportedMessageException e) {
-      throw new IllegalStateException(e);
-    }
+    return hashCodeNode.execute(warnLib.removeWarnings(selfWithWarning));
   }
 
   /** Specializations for interop values * */
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/ordering/LessThanNode.java b/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/ordering/LessThanNode.java
index f9406681732f..8369579ecf5b 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/ordering/LessThanNode.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/ordering/LessThanNode.java
@@ -145,17 +145,13 @@ Object lessWithWarnings(Object selfWithWarnings, Object otherWithWarnings,
       @CachedLibrary("otherWithWarnings") WarningsLibrary otherWarnLib,
       @Cached LessThanNode lessThanNode
   ) {
-    try {
-      Object self =
+    Object self =
           selfWarnLib.hasWarnings(selfWithWarnings) ? selfWarnLib.removeWarnings(selfWithWarnings)
               : selfWithWarnings;
-      Object other =
+    Object other =
           otherWarnLib.hasWarnings(otherWithWarnings) ? otherWarnLib.removeWarnings(otherWithWarnings)
               : otherWithWarnings;
-      return lessThanNode.execute(self, other);
-    } catch (UnsupportedMessageException e) {
-      throw new IllegalStateException(e);
-    }
+    return lessThanNode.execute(self, other);
   }
 
   @Specialization(limit = "3")
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/text/util/ExpectStringNode.java b/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/text/util/ExpectStringNode.java
index 9c5670fd9990..c139d882095a 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/text/util/ExpectStringNode.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/node/expression/builtin/text/util/ExpectStringNode.java
@@ -36,11 +36,7 @@ String doString(String str) {
 
   @Specialization(guards = "warnings.hasWarnings(warning)")
   String doWarning(Object warning, @CachedLibrary(limit = "3") WarningsLibrary warnings) {
-    try {
-      return execute(warnings.removeWarnings(warning));
-    } catch (UnsupportedMessageException e) {
-      throw new IllegalStateException(e);
-    }
+    return execute(warnings.removeWarnings(warning));
   }
 
   @Fallback
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Array.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Array.java
index cc4271e0be0f..4af4aac829c2 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Array.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Array.java
@@ -197,6 +197,15 @@ boolean hasWarnings(@CachedLibrary(limit = "3") WarningsLibrary warnings) {
     return withWarnings;
   }
 
+  @ExportMessage
+  long countWarnings(@CachedLibrary(limit = "3") WarningsLibrary warnings) {
+    long count = 0;
+    for (Object item : items) {
+      count += warnings.countWarnings(item);
+    }
+    return count;
+  }
+
   @ExportMessage
   Warning[] getWarnings(Node location, @CachedLibrary(limit = "3") WarningsLibrary warnings)
       throws UnsupportedMessageException {
@@ -210,8 +219,7 @@ Warning[] getWarnings(Node location, @CachedLibrary(limit = "3") WarningsLibrary
   }
 
   @ExportMessage
-  Array removeWarnings(@CachedLibrary(limit = "3") WarningsLibrary warnings)
-      throws UnsupportedMessageException {
+  Array removeWarnings(@CachedLibrary(limit = "3") WarningsLibrary warnings) {
     Object[] items = new Object[this.items.length];
     for (int i = 0; i < this.items.length; i++) {
       if (warnings.hasWarnings(this.items[i])) {
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/ArraySlice.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/ArraySlice.java
index b06b25ee231d..73ea6f664688 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/ArraySlice.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/ArraySlice.java
@@ -132,13 +132,18 @@ boolean hasWarnings(@CachedLibrary(limit = "3") WarningsLibrary warnings) {
     return warnings.hasWarnings(this.storage);
   }
 
+  @ExportMessage
+  long countWarnings(@CachedLibrary(limit = "3") WarningsLibrary warnings) {
+    return warnings.countWarnings(this.storage);
+  }
+
   @ExportMessage
   Warning[] getWarnings(Node location, @CachedLibrary(limit = "3") WarningsLibrary warnings) throws UnsupportedMessageException {
     return warnings.getWarnings(this.storage, location);
   }
 
   @ExportMessage
-  Object removeWarnings(@CachedLibrary(limit = "3") WarningsLibrary warnings) throws UnsupportedMessageException {
+  Object removeWarnings(@CachedLibrary(limit = "3") WarningsLibrary warnings) {
     Object newStorage = warnings.removeWarnings(this.storage);
     return new ArraySlice(newStorage, start, end);
   }
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Vector.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Vector.java
index 8a626a9d7216..5fd341040603 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Vector.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/data/Vector.java
@@ -218,6 +218,11 @@ boolean hasWarnings(@CachedLibrary(limit = "3") WarningsLibrary warnings) {
     return warnings.hasWarnings(this.storage);
   }
 
+  @ExportMessage
+  long countWarnings(@CachedLibrary(limit = "3") WarningsLibrary warnings) {
+    return warnings.countWarnings(this.storage);
+  }
+
   @ExportMessage
   Warning[] getWarnings(Node location, @CachedLibrary(limit = "3") WarningsLibrary warnings)
       throws UnsupportedMessageException {
@@ -225,8 +230,7 @@ Warning[] getWarnings(Node location, @CachedLibrary(limit = "3") WarningsLibrary
   }
 
   @ExportMessage
-  Vector removeWarnings(@CachedLibrary(limit = "3") WarningsLibrary warnings)
-      throws UnsupportedMessageException {
+  Vector removeWarnings(@CachedLibrary(limit = "3") WarningsLibrary warnings) {
     return new Vector(warnings.removeWarnings(this.storage));
   }
 
diff --git a/engine/runtime/src/main/java/org/enso/interpreter/runtime/error/WithWarnings.java b/engine/runtime/src/main/java/org/enso/interpreter/runtime/error/WithWarnings.java
index 563113823113..9ead7707ddad 100644
--- a/engine/runtime/src/main/java/org/enso/interpreter/runtime/error/WithWarnings.java
+++ b/engine/runtime/src/main/java/org/enso/interpreter/runtime/error/WithWarnings.java
@@ -113,7 +113,7 @@ boolean hasWarnings() {
 
   @ExportMessage
   long countWarnings() {
-    return warnings.size();
+    return (long) warnings.size();
   }
 
   @ExportMessage
@@ -127,8 +127,7 @@ Warning[] getWarnings(
   }
 
   @ExportMessage
-  Object removeWarnings(@CachedLibrary(limit = "3") WarningsLibrary warnings)
-      throws UnsupportedMessageException {
+  Object removeWarnings(@CachedLibrary(limit = "3") WarningsLibrary warnings) {
     if (warnings.hasWarnings(value)) {
       return warnings.removeWarnings(value);
     } else {