Deprecated ranges: relax errors to warnings.

generators/src/org/jetbrains/kotlin/generators/builtins/progressionIterators.kt

@@ -61,7 +61,7 @@ fun floatingPointProgressionIterator(kind: ProgressionKind): String {
  * An iterator over a progression of values of type `$t`.
  * @property increment the number by which the value is incremented on each step.
  */
-@Deprecated("This range implementation has unclear semantics and will be removed soon.", level = DeprecationLevel.ERROR)
+@Deprecated("This range implementation has unclear semantics and will be removed soon.", level = DeprecationLevel.WARNING)
 class ${t}ProgressionIterator(start: $t, val end: $t, val increment: $t) : ${t}Iterator() {
     private var next = start
 

generators/src/org/jetbrains/kotlin/generators/builtins/progressions.kt

@@ -65,7 +65,7 @@ class GenerateProgressions(out: PrintWriter) : BuiltInsSourceGenerator(out) {
             }
 
             if (kind == FLOAT || kind == DOUBLE) {
-                out.println("""@Deprecated("This range implementation has unclear semantics and will be removed soon.", level = DeprecationLevel.ERROR)""")
+                out.println("""@Deprecated("This range implementation has unclear semantics and will be removed soon.", level = DeprecationLevel.WARNING)""")
                 out.println("""@Suppress("DEPRECATION_ERROR")""")
             }
 

generators/src/org/jetbrains/kotlin/generators/builtins/ranges.kt

@@ -65,7 +65,7 @@ class GenerateRanges(out: PrintWriter) : BuiltInsSourceGenerator(out) {
             val toString = "\"\$start..\$end\""
 
             if (kind == FLOAT || kind == DOUBLE) {
-                out.println("""@Deprecated("This range implementation has unclear semantics and will be removed soon.", level = DeprecationLevel.ERROR)""")
+                out.println("""@Deprecated("This range implementation has unclear semantics and will be removed soon.", level = DeprecationLevel.WARNING)""")
                 out.println("""@Suppress("DEPRECATION_ERROR")""")
             }