StackTrace不会显示每个点的行号

Question

我正在使用Chain.capture(() {...});在Dart中执行异步功能，但是StackTrace中的某些点未显示行号，而这些行是我需要调试的行：D
如何查看所有行号？

Dart 2.1，VM

dart:async                                                      _completeOnAsyncReturn
package:oni_server/src/executor/executor.dart                   Executor.find
dart:async                                                      _completeOnAsyncReturn
package:oni_server/src/executor/executor.dart                   Executor.findMap
===== asynchronous gap ===========================
dart:async                                                      _AsyncAwaitCompleter.completeError
package:guaraci_tracker/visitor.dart                            Visitor.answered
===== asynchronous gap ===========================
dart:async                                                      _asyncThenWrapperHelper
package:guaraci_tracker/visitor.dart                            Visitor.answered
package:guaraci_tracker/visitor.dart 479:9                      Visitor.command
===== asynchronous gap ===========================
dart:async                                                      _asyncThenWrapperHelper
package:oni_server/src/socket/base_user.dart                    BaseSocketUser.process
bin/main.dart 18:18                                             main.<fn>.<fn>.<fn>
package:stack_trace                                             Chain.capture
bin/main.dart 17:13                                             main.<fn>.<fn>