Not compiling with new STABLE channel (mailer dependency failing)

[MichalMisiaszek]

Catcher requires mailer 2.x.x which does not work with flutter 1.8.1 (latest stable).

file:///Users/michal/Development/flutter/.pub-cache/hosted/pub.dartlang.org/mailer-2.5.1/lib/src/smtp/connection.dart:137:33: Error: The argument type 'Utf8Decoder' can't be assigned to the parameter type 'StreamTransformer<Uint8List, dynamic>'.
 - 'Utf8Decoder' is from 'dart:convert'.
 - 'StreamTransformer' is from 'dart:async'.
 - 'Uint8List' is from 'dart:typed_data'.
Try changing the type of the parameter, or casting the argument to 'StreamTransformer<Uint8List, dynamic>'.
        .transform(convert.utf8.decoder)```

If forced to use 3.0.1 fails with many other errors:
```Compiler message:
file:///Users/michal/Development/flutter/.pub-cache/hosted/pub.dartlang.org/catcher-0.1.9/lib/handlers/email_auto_handler.dart:56:37: Error: The type 'SendReport' used in the 'for' loop must implement 'Iterable<dynamic>'.
 - 'SendReport' is from 'package:mailer/src/entities/send_report.dart' ('file:///Users/michal/Development/flutter/.pub-cache/hosted/pub.dartlang.org/mailer-3.0.1/lib/src/entities/send_report.dart').
 - 'Iterable' is from 'dart:core'.
      for (SendReport sendReport in results) {
                                    ^
file:///Users/michal/Development/flutter/.pub-cache/hosted/pub.dartlang.org/catcher-0.1.9/lib/handlers/email_auto_handler.dart:57:51: Error: The getter 'sent' isn't defined for the class 'SendReport'.
 - 'SendReport' is from 'package:mailer/src/entities/send_report.dart' ('file:///Users/michal/Development/flutter/.pub-cache/hosted/pub.dartlang.org/mailer-3.0.1/lib/src/entities/send_report.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'sent'.
        _printLog("Sending status: " + sendReport.sent.toString());
                                                  ^^^^
file:///Users/michal/Development/flutter/.pub-cache/hosted/pub.dartlang.org/catcher-0.1.9/lib/handlers/email_auto_handler.dart:58:24: Error: The getter 'validationProblems' isn't defined for the class 'SendReport'.
 - 'SendReport' is from 'package:mailer/src/entities/send_report.dart' ('file:///Users/michal/Development/flutter/.pub-cache/hosted/pub.dartlang.org/mailer-3.0.1/lib/src/entities/send_report.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'validationProblems'.
        if (sendReport.validationProblems != null &&
                       ^^^^^^^^^^^^^^^^^^
file:///Users/michal/Development/flutter/.pub-cache/hosted/pub.dartlang.org/catcher-0.1.9/lib/handlers/email_auto_handler.dart:59:24: Error: The getter 'validationProblems' isn't defined for the class 'SendReport'.
 - 'SendReport' is from 'package:mailer/src/entities/send_report.dart' ('file:///Users/michal/Development/flutter/.pub-cache/hosted/pub.dartlang.org/mailer-3.0.1/lib/src/entities/send_report.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'validationProblems'.
            sendReport.validationProblems.length > 0) {
                       ^^^^^^^^^^^^^^^^^^
file:///Users/michal/Development/flutter/.pub-cache/hosted/pub.dartlang.org/catcher-0.1.9/lib/handlers/email_auto_handler.dart:60:42: Error: The getter 'validationProblems' isn't defined for the class 'SendReport'.
 - 'SendReport' is from 'package:mailer/src/entities/send_report.dart' ('file:///Users/michal/Development/flutter/.pub-cache/hosted/pub.dartlang.org/mailer-3.0.1/lib/src/entities/send_report.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'validationProblems'.
          for (var problem in sendReport.validationProblems) {
                                         ^^^^^^^^^^^^^^^^^^
file:///Users/michal/Development/flutter/.pub-cache/hosted/pub.dartlang.org/catcher-0.1.9/lib/handlers/email_auto_handler.dart:64:27: Error: The getter 'sent' isn't defined for the class 'SendReport'.
 - 'SendReport' is from 'package:mailer/src/entities/send_report.dart' ('file:///Users/michal/Development/flutter/.pub-cache/hosted/pub.dartlang.org/mailer-3.0.1/lib/src/entities/send_report.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'sent'.
        return sendReport.sent;
                          ^^^^
file:///Users/michal/Development/flutter/.pub-cache/hosted/pub.dartlang.org/mailer-3.0.1/lib/src/smtp/connection.dart:151:32: Error: The argument type 'Utf8Decoder' can't be assigned to the parameter type 'StreamTransformer<Uint8List, dynamic>'.
 - 'Utf8Decoder' is from 'dart:convert'.
 - 'StreamTransformer' is from 'dart:async'.
 - 'Uint8List' is from 'dart:typed_data'.
Try changing the type of the parameter, or casting the argument to 'StreamTransformer<Uint8List, dynamic>'.
        _socket.transform(utf8.decoder).transform(const LineSplitter()));```

[jhomlala]

Currently (as today) stable version is 1.7.8: https://flutter.dev/docs/development/tools/sdk/releases
1.8.1 is current version of dev channel, which may break Catcher.

I think that mailer package will be updated soon to fix issue with UInt8List. Please use 1.7.8 to fix your issue.

[jhomlala]

I've just tested Catcher with 1.7.8 and it works fine.