Bus error on Raspberry Pi when using mongodb

[laeuter]

What steps will reproduce the problem?

1. run dart file on command line using mongodb

----------------------------mongotest.dart-----------------------------
import 'package:mongo_dart/mongo_dart.dart';
import 'package:logging/logging.dart';

void main() {
dbConnection();
}

void dbConnection() {
Logger.root.level=Level.ALL;
Logger.root.onRecord.listen((LogRecord rec) {
print('${rec.level.name}: ${rec.time}: ${rec.message}');
});
var db = new Db('mongodb://127.0.0.1/test');
print("Here");
db.open().then((success) {
print("Here B");
if (success) {
var _bios = db.collection("std");
Cursor cur = _bios.find();
cur.each((Map bio) {
print(bio);
});
}
});
}

----------------------------pubspec.yaml-----------------------------
name: MongoTest
description: A sample command-line application
dependencies:
mongo_dart: any

What is the expected output? What do you see instead?
Here
Here B
(and data in the db)

But I got

Here
[ 724.430982] Unhandled fault: alignment exception (0x001) at 0x75dc6bc5
Bus-Zugriffsfehler

What version of the product are you using?
Dart VM version: 1.12.0-edge.9f00e0591816edd4cca0cf349e87b7b4f82cd2e6 (Sun Jun 28 16:19:06 2015) on "linux_arm"

On what operating system?
Debian raspbian wheezy on Raspberry Pi 2, but I got the same error late last year when still using Raspberry Pi Model B;

What browser (if applicable)?
N/A command line app

Please provide any additional information below.
I had hoped that this were resolved by #22384, but apparently it wasn't

cat /proc/cpu/alignment before
User: 0
System: 0 ( (null))
Skipped: 0
Half: 0
Word: 0
DWord: 0
Multi: 0
User faults: 2 (fixup)

cat /proc/cpu/alignment after
User: 3
System: 0 ( (null))
Skipped: 1
Half: 0
Word: 0
DWord: 1
Multi: 1
User faults: 2 (fixup)

[rmacnak-google]

#22151