Revert "Change SDK/DartEditor versioning scheme to semantic versions."

dart/sdk/lib/_internal/pub/lib/src/command/lish.dart

Index: dart/sdk/lib/_internal/pub/lib/src/command/lish.dart
diff --git a/dart/sdk/lib/_internal/pub/lib/src/command/lish.dart b/dart/sdk/lib/_internal/pub/lib/src/command/lish.dart
index 6d75814336c2f5d39ae5ca6dc019b7282a9d2cd5..1cc95ace29773c7b68628666a7b7a8dddbbf7371 100644
--- a/dart/sdk/lib/_internal/pub/lib/src/command/lish.dart
+++ b/dart/sdk/lib/_internal/pub/lib/src/command/lish.dart
@@ -94,6 +94,15 @@ class LishCommand extends PubCommand {
   }
 
   Future onRun() {
+    // Sanity check. Don't push to the production server when running tests or
+    // developing on pub.
+    if (sdk.isBleedingEdge &&
+        server.toString() == HostedSource.defaultUrl &&
+        !dryRun) {
+      log.error('Cannot publish to $server from bleeding edge pub!');
+      return null;
+    }
+
     if (force && dryRun) {
       log.error('Cannot use both --force and --dry-run.');
       this.printUsage();