Fix a couple bugs in r42055.

sdk/lib/_internal/pub_generated/lib/src/source/hosted.dart

Index: sdk/lib/_internal/pub_generated/lib/src/source/hosted.dart
diff --git a/sdk/lib/_internal/pub_generated/lib/src/source/hosted.dart b/sdk/lib/_internal/pub_generated/lib/src/source/hosted.dart
index 3f02137024d4c84459ff8a28c62d743270b83a96..bc4bcd5e8c2294cae6dbea82b5c3545dad03f829 100644
--- a/sdk/lib/_internal/pub_generated/lib/src/source/hosted.dart
+++ b/sdk/lib/_internal/pub_generated/lib/src/source/hosted.dart
@@ -148,66 +148,68 @@ class HostedSource extends CachedSource {
               var packages =
                   _getCachedPackagesInDirectory(path.basename(serverDir));
               packages.sort(Package.orderByNameAndVersion);
-              var it1 = packages.iterator;
-              break1() {
-                trampoline0 = continue0;
-              }
-              var trampoline1;
-              continue1() {
-                trampoline1 = null;
-                if (it1.moveNext()) {
-                  var package = it1.current;
-                  join1() {
-                    trampoline1 = continue1;
-                  }
-                  catch0(error, stackTrace) {
-                    try {
-                      failures++;
-                      var message =
-                          "Failed to repair ${log.bold(package.name)} " "${package.version}";
-                      join2() {
-                        log.error("${message}. Error:\n${error}");
-                        log.fine(stackTrace);
-                        tryDeleteEntry(package.dir);
-                        join1();
-                      }
-                      if (url != defaultUrl) {
-                        message += " from ${url}";
-                        join2();
-                      } else {
-                        join2();
+              Future.forEach(packages, ((package) {
+                final completer0 = new Completer();
+                scheduleMicrotask(() {
+                  try {
+                    join0() {
+                      completer0.complete();
+                    }
+                    catch0(error, stackTrace) {
+                      try {
+                        failures++;
+                        var message =
+                            "Failed to repair ${log.bold(package.name)} " "${package.version}";
+                        join1() {
+                          log.error("${message}. Error:\n${error}");
+                          log.fine(stackTrace);
+                          tryDeleteEntry(package.dir);
+                          join0();
+                        }
+                        if (url != defaultUrl) {
+                          message += " from ${url}";
+                          join1();
+                        } else {
+                          join1();
+                        }
+                      } catch (error, stackTrace) {
+                        completer0.completeError(error, stackTrace);
                       }
-                    } catch (error, stackTrace) {
-                      completer0.completeError(error, stackTrace);
                     }
-                  }
-                  try {
-                    _download(
-                        url,
-                        package.name,
-                        package.version,
-                        package.dir).then((x0) {
-                      trampoline1 = () {
-                        trampoline1 = null;
+                    try {
+                      _download(
+                          url,
+                          package.name,
+                          package.version,
+                          package.dir).then((x0) {
                         try {
                           x0;
                           successes++;
-                          join1();
+                          join0();
                         } catch (e0, s0) {
                           catch0(e0, s0);
                         }
-                      };
-                      do trampoline1(); while (trampoline1 != null);
-                    }, onError: catch0);
-                  } catch (e1, s1) {
-                    catch0(e1, s1);
+                      }, onError: catch0);
+                    } catch (e1, s1) {
+                      catch0(e1, s1);
+                    }
+                  } catch (e, s) {
+                    completer0.completeError(e, s);
+                  }
+                });
+                return completer0.future;
+              })).then((x0) {
+                trampoline0 = () {
+                  trampoline0 = null;
+                  try {
+                    x0;
+                    trampoline0 = continue0;
+                  } catch (e0, s0) {
+                    completer0.completeError(e0, s0);
                   }
-                } else {
-                  break1();
-                }
-              }
-              trampoline1 = continue1;
-              do trampoline1(); while (trampoline1 != null);
+                };
+                do trampoline0(); while (trampoline0 != null);
+              }, onError: completer0.completeError);
             } else {
               break0();
             }