Tests break with Flutter 1.23

[IoanaAlexandru]

After upgrading to Flutter 1.23.0-18.1.pre, tests break badly:

`flutter test` output

>flutter test
Warning: You are using these overridden dependencies:
! dartx 0.5.0
Running "flutter pub get" in acs-upb-mobile...                      1.9s
00:12 +0: loading C:\Users\sako_\StudioProjects\acs-upb-mobile\test\authentication_test.dart                                                                                 .
./../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendar_system.dart:8:2: Error: 'internal' is imported from both 'package:meta/meta.dart' and
'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendar_system.dart:8:2: Error: This can't be used as metadata; metadata should be a
reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/zoneddatetime.dart:18:2: Error: 'internal' is imported from both 'package:meta/meta.dart' and
'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/zoneddatetime.dart:18:2: Error: This can't be used as metadata; metadata should be a reference
to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/localtime.dart:11:2: Error: 'internal' is imported from both 'package:meta/meta.dart' and
'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/localtime.dart:11:2: Error: This can't be used as metadata; metadata should be a reference to
a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/localdate.dart:8:2: Error: 'internal' is imported from both 'package:meta/meta.dart' and
'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/localdate.dart:8:2: Error: This can't be used as metadata; metadata should be a reference to a
compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/localdatetime.dart:11:2: Error: 'internal' is imported from both 'package:meta/meta.dart' and
'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/localdatetime.dart:11:2: Error: This can't be used as metadata; metadata should be a reference
to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/duration.dart:11:2: Error: 'internal' is imported from both 'package:meta/meta.dart' and
'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/duration.dart:11:2: Error: This can't be used as metadata; metadata should be a reference to a
compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/instant.dart:8:2: Error: 'internal' is imported from both 'package:meta/meta.dart' and
'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/instant.dart:8:2: Error: This can't be used as metadata; metadata should be a reference to a
compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/interval.dart:9:2: Error: 'internal' is imported from both 'package:meta/meta.dart' and
'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/interval.dart:9:2: Error: This can't be used as metadata; metadata should be a reference to a
compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/ambiguous_time_error.dart:11:4: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
  @internal LocalDateTime get localDateTime => earlierMapping.localDateTime;
   ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/ambiguous_time_error.dart:11:4: Error: This can't be used as metadata; metadata should be a
reference to a compile-time constant variable, or a call to a constant constructor.
  @internal LocalDateTime get localDateTime => earlierMapping.localDateTime;
   ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/offset_datetime.dart:9:2: Error: 'internal' is imported from both 'package:meta/meta.dart' and
'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/offset_datetime.dart:9:2: Error: This can't be used as metadata; metadata should be a
reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/period.dart:37:2: Error: 'internal' is imported from both 'package:meta/meta.dart' and
'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/period.dart:37:2: Error: This can't be used as metadata; metadata should be a reference to a
compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/period.dart:744:4: Error: 'internal' is imported from both 'package:meta/meta.dart' and
'package:time_machine/src/time_machine_internal.dart'.
  @internal static final NormalizingPeriodEqualityComparer instance = new NormalizingPeriodEqualityComparer._();
   ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/period.dart:744:4: Error: This can't be used as metadata; metadata should be a reference to a
compile-time constant variable, or a call to a constant constructor.
  @internal static final NormalizingPeriodEqualityComparer instance = new NormalizingPeriodEqualityComparer._();
   ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/globalization/culture.dart:9:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/globalization/culture.dart:9:2: Error: This can't be used as metadata; metadata should be
a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/zone_equality_comparer.dart:133:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/zone_equality_comparer.dart:133:2: Error: This can't be used as metadata; metadata
should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/zone_equality_comparer.dart:263:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/zone_equality_comparer.dart:263:2: Error: This can't be used as metadata; metadata
should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/zoneinterval.dart:10:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/zoneinterval.dart:10:2: Error: This can't be used as metadata; metadata should be a
reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/zone_local_mapping.dart:11:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/zone_local_mapping.dart:11:2: Error: This can't be used as metadata; metadata should
be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/yearmonthday_and_calendar.dart:12:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/yearmonthday_and_calendar.dart:12:2: Error: This can't be used as metadata; metadata should be
a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/localinstant.dart:15:2: Error: 'internal' is imported from both 'package:meta/meta.dart' and
'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/localinstant.dart:15:2: Error: This can't be used as metadata; metadata should be a reference
to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/globalization/time_machine_format_info.dart:23:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/globalization/time_machine_format_info.dart:23:2: Error: This can't be used as metadata;
metadata should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/parse_result.dart:133:2: Error: 'internal' is imported from both 'package:meta/meta.dart'
and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/parse_result.dart:133:2: Error: This can't be used as metadata; metadata should be a
reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/text_cursor.dart:15:2: Error: 'internal' is imported from both 'package:meta/meta.dart'
and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/text_cursor.dart:15:2: Error: This can't be used as metadata; metadata should be a
reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/localdate_pattern.dart:8:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/localdate_pattern.dart:8:2: Error: This can't be used as metadata; metadata should be a
reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/localtime_pattern.dart:8:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/localtime_pattern.dart:8:2: Error: This can't be used as metadata; metadata should be a
reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/localdatetime_pattern.dart:10:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/localdatetime_pattern.dart:10:2: Error: This can't be used as metadata; metadata should
be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/annual_date_pattern.dart:11:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/annual_date_pattern.dart:11:2: Error: This can't be used as metadata; metadata should be
a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/duration_pattern.dart:9:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/duration_pattern.dart:9:2: Error: This can't be used as metadata; metadata should be a
reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/instant_pattern.dart:8:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/instant_pattern.dart:8:2: Error: This can't be used as metadata; metadata should be a
reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/offset_date_pattern.dart:10:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/offset_date_pattern.dart:10:2: Error: This can't be used as metadata; metadata should be
a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/offset_datetime_pattern.dart:10:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/offset_datetime_pattern.dart:10:2: Error: This can't be used as metadata; metadata should
be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/offset_pattern.dart:8:2: Error: 'internal' is imported from both 'package:meta/meta.dart'
and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/offset_pattern.dart:8:2: Error: This can't be used as metadata; metadata should be a
reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/offset_time_pattern.dart:10:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/offset_time_pattern.dart:10:2: Error: This can't be used as metadata; metadata should be
a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/zoneddatetime_pattern.dart:10:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/zoneddatetime_pattern.dart:10:2: Error: This can't be used as metadata; metadata should
be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/gj_yearmonthday_calculator.dart:9:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/gj_yearmonthday_calculator.dart:9:2: Error: This can't be used as metadata; metadata
should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/gregorian_yearmonthday_calculator.dart:54:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/gregorian_yearmonthday_calculator.dart:54:2: Error: This can't be used as metadata;
metadata should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/julian_yearmonthday_calculator.dart:10:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal 
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/julian_yearmonthday_calculator.dart:10:2: Error: This can't be used as metadata;
metadata should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal 
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/yearmonthday_calculator.dart:15:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/yearmonthday_calculator.dart:15:2: Error: This can't be used as metadata; metadata
should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/gj_era_calculator.dart:13:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/gj_era_calculator.dart:13:2: Error: This can't be used as metadata; metadata should
be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/era_calculator.dart:14:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/era_calculator.dart:14:2: Error: This can't be used as metadata; metadata should be
a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/simple_week_year_rule.dart:17:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/simple_week_year_rule.dart:17:2: Error: This can't be used as metadata; metadata
should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/badi_yearmonthday_calculator.dart:12:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/badi_yearmonthday_calculator.dart:12:2: Error: This can't be used as metadata;
metadata should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/coptic_yearmonthday_calculator.dart:8:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/coptic_yearmonthday_calculator.dart:8:2: Error: This can't be used as metadata;
metadata should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/fixed_month_yearmonthday_calculator.dart:13:2: Error: 'internal' is imported from
both 'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/fixed_month_yearmonthday_calculator.dart:13:2: Error: This can't be used as
metadata; metadata should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/hebrew_yearmonthday_calculator.dart:11:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/hebrew_yearmonthday_calculator.dart:11:2: Error: This can't be used as metadata;
metadata should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/islamic_yearmonthday_calculator.dart:8:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/islamic_yearmonthday_calculator.dart:8:2: Error: This can't be used as metadata;
metadata should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/persian_yearmonthday_calculator.dart:14:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/persian_yearmonthday_calculator.dart:14:2: Error: This can't be used as metadata;
metadata should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/persian_yearmonthday_calculator.dart:114:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/persian_yearmonthday_calculator.dart:114:2: Error: This can't be used as metadata;
metadata should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/persian_yearmonthday_calculator.dart:148:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/persian_yearmonthday_calculator.dart:148:2: Error: This can't be used as metadata;
metadata should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/persian_yearmonthday_calculator.dart:163:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/persian_yearmonthday_calculator.dart:163:2: Error: This can't be used as metadata;
metadata should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/um_al_qura_yearmonthday_calculator.dart:13:2: Error: 'internal' is imported from
both 'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/calendars/um_al_qura_yearmonthday_calculator.dart:13:2: Error: This can't be used as metadata;
metadata should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/fixed_datetimezone.dart:19:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/fixed_datetimezone.dart:19:2: Error: This can't be used as metadata; metadata should
be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/precalculated_datetimezone.dart:20:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/precalculated_datetimezone.dart:20:2: Error: This can't be used as metadata;
metadata should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/single_zoneinterval_map.dart:13:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/single_zoneinterval_map.dart:13:2: Error: This can't be used as metadata; metadata
should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/standard_daylight_alternating_map.dart:38:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/standard_daylight_alternating_map.dart:38:2: Error: This can't be used as metadata;
metadata should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/transition.dart:13:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/transition.dart:13:2: Error: This can't be used as metadata; metadata should be a
reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/tzdb_zone_1970_location.dart:78:4: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
  @internal void write(IDateTimeZoneWriter writer) {
   ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/tzdb_zone_1970_location.dart:78:4: Error: This can't be used as metadata; metadata
should be a reference to a compile-time constant variable, or a call to a constant constructor.
  @internal void write(IDateTimeZoneWriter writer) {
   ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/tzdb_zone_1970_location.dart:96:4: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
  @internal static TzdbZone1970Location read(DateTimeZoneReader reader)
   ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/tzdb_zone_1970_location.dart:96:4: Error: This can't be used as metadata; metadata
should be a reference to a compile-time constant variable, or a call to a constant constructor.
  @internal static TzdbZone1970Location read(DateTimeZoneReader reader)
   ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/tzdb_zone_location.dart:74:4: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
  @internal void write(IDateTimeZoneWriter writer)
   ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/tzdb_zone_location.dart:74:4: Error: This can't be used as metadata; metadata should
be a reference to a compile-time constant variable, or a call to a constant constructor.
  @internal void write(IDateTimeZoneWriter writer)
   ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/tzdb_zone_location.dart:84:4: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
  @internal static TzdbZoneLocation read(DateTimeZoneReader reader) {
   ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/tzdb_zone_location.dart:84:4: Error: This can't be used as metadata; metadata should
be a reference to a compile-time constant variable, or a call to a constant constructor.
  @internal static TzdbZoneLocation read(DateTimeZoneReader reader) {
   ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/zone_recurrence.dart:17:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/zone_recurrence.dart:17:2: Error: This can't be used as metadata; metadata should be
a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/zone_year_offset.dart:26:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/timezones/zone_year_offset.dart:26:2: Error: This can't be used as metadata; metadata should
be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/fields/fixed_length_date_period_field.dart:13:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/fields/fixed_length_date_period_field.dart:13:2: Error: This can't be used as metadata;
metadata should be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/fields/time_period_field.dart:65:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/fields/time_period_field.dart:65:2: Error: This can't be used as metadata; metadata should be
a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/patterns/pattern_fields.dart:14:2: Error: 'internal' is imported from both
'package:meta/meta.dart' and 'package:time_machine/src/time_machine_internal.dart'.
@internal
 ^^^^^^^^
../../../flutter/.pub-cache/hosted/pub.dartlang.org/time_machine-0.9.13/lib/src/text/patterns/pattern_fields.dart:14:2: Error: This can't be used as metadata; metadata should
be a reference to a compile-time constant variable, or a call to a constant constructor.
@internal
 ^
00:21 +0 -1: loading C:\Users\sako_\StudioProjects\acs-upb-mobile\test\authentication_test.dart [E]
  Failed to load "C:\Users\sako_\StudioProjects\acs-upb-mobile\test\authentication_test.dart":
  Compilation failed
  Test: C:\Users\sako_\StudioProjects\acs-upb-mobile\test\authentication_test.dart
  Shell: C:\Users\sako_\flutter\bin\cache\artifacts\engine\windows-x64\flutter_tester.exe


  Exception: the Dart compiler exited unexpectedly.
  package:flutter_tools/src/base/common.dart 14:3                throwToolExit
  package:flutter_tools/src/compile.dart 716:9                   DefaultResidentCompiler._compile.<fn>
  package:stack_trace/src/stack_zone_specification.dart 126:26   StackZoneSpecification._registerUnaryCallback.<fn>.<fn>
  package:stack_trace/src/stack_zone_specification.dart 208:15   StackZoneSpecification._run
  package:stack_trace/src/stack_zone_specification.dart 126:14   StackZoneSpecification._registerUnaryCallback.<fn>
  dart:async/zone.dart 1198:47                                   _rootRunUnary
  dart:async/zone.dart 1100:19                                   _CustomZone.runUnary
  dart:async/future_impl.dart 143:18                             _FutureListener.handleValue
  dart:async/future_impl.dart 696:45                             Future._propagateToListeners.handleValueCallback
  dart:async/future_impl.dart 725:32                             Future._propagateToListeners
  dart:async/future_impl.dart 621:9                              Future._propagateToListeners
  dart:async/future_impl.dart 529:5                              Future._completeWithValue
  dart:async/future_impl.dart 567:7                              Future._asyncCompleteWithValue.<fn>
  package:stack_trace/src/stack_zone_specification.dart 208:15   StackZoneSpecification._run
  package:stack_trace/src/stack_zone_specification.dart 116:48   StackZoneSpecification._registerCallback.<fn>
  dart:async/zone.dart 1190:13                                   _rootRun
  dart:async/zone.dart 1093:19                                   _CustomZone.run
  dart:async/zone.dart 997:7                                     _CustomZone.runGuarded
  dart:async/zone.dart 1037:23                                   _CustomZone.bindCallbackGuarded.<fn>
  dart:async/schedule_microtask.dart 41:21                       _microtaskLoop
  dart:async/schedule_microtask.dart 50:5                        _startMicrotaskLoop
  dart:isolate-patch/isolate_patch.dart 118:13                   _runPendingImmediateCallback
  dart:isolate-patch/isolate_patch.dart 169:5                    _RawReceivePortImpl._handleMessage
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1121:19                                   _CustomZone.registerUnaryCallback
  dart:async/future_impl.dart 280:23                             Future.then
  package:flutter_tools/src/compile.dart 714:32                  DefaultResidentCompiler._compile
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1121:19                                   _CustomZone.registerUnaryCallback
  dart:async-patch/async_patch.dart 83:23                        _asyncThenWrapperHelper
  package:flutter_tools/src/compile.dart 588:14                  DefaultResidentCompiler._recompile
  package:flutter_tools/src/compile.dart 333:16                  _RecompileRequest._run
  package:flutter_tools/src/compile.dart 311:30                  _CompilationRequest.run
  package:flutter_tools/src/compile.dart 627:23                  DefaultResidentCompiler._handleCompilationRequest
  package:stack_trace/src/stack_zone_specification.dart 126:26   StackZoneSpecification._registerUnaryCallback.<fn>.<fn>
  package:stack_trace/src/stack_zone_specification.dart 208:15   StackZoneSpecification._run
  package:stack_trace/src/stack_zone_specification.dart 126:14   StackZoneSpecification._registerUnaryCallback.<fn>
  dart:async/zone.dart 1198:47                                   _rootRunUnary
  dart:async/zone.dart 1100:19                                   _CustomZone.runUnary
  dart:async/zone.dart 1005:7                                    _CustomZone.runUnaryGuarded
  dart:async/stream_impl.dart 357:11                             _BufferingStreamSubscription._sendData
  dart:async/stream_impl.dart 611:14                             _DelayedData.perform
  dart:async/stream_impl.dart 730:11                             _StreamImplEvents.handleNext
  dart:async/stream_impl.dart 687:7                              _PendingEvents.schedule.<fn>
  package:stack_trace/src/stack_zone_specification.dart 208:15   StackZoneSpecification._run
  package:stack_trace/src/stack_zone_specification.dart 116:48   StackZoneSpecification._registerCallback.<fn>
  dart:async/zone.dart 1182:47                                   _rootRun
  dart:async/zone.dart 1093:19                                   _CustomZone.run
  dart:async/zone.dart 997:7                                     _CustomZone.runGuarded
  dart:async/zone.dart 1037:23                                   _CustomZone.bindCallbackGuarded.<fn>
  package:stack_trace/src/stack_zone_specification.dart 208:15   StackZoneSpecification._run
  package:stack_trace/src/stack_zone_specification.dart 116:48   StackZoneSpecification._registerCallback.<fn>
  dart:async/zone.dart 1190:13                                   _rootRun
  dart:async/zone.dart 1093:19                                   _CustomZone.run
  dart:async/zone.dart 997:7                                     _CustomZone.runGuarded
  dart:async/zone.dart 1037:23                                   _CustomZone.bindCallbackGuarded.<fn>
  dart:async/schedule_microtask.dart 41:21                       _microtaskLoop
  dart:async/schedule_microtask.dart 50:5                        _startMicrotaskLoop
  dart:isolate-patch/isolate_patch.dart 118:13                   _runPendingImmediateCallback
  dart:isolate-patch/timer_impl.dart 404:11                      _Timer._runTimers
  dart:isolate-patch/timer_impl.dart 428:5                       _Timer._handleMessage
  dart:isolate-patch/isolate_patch.dart 168:12                   _RawReceivePortImpl._handleMessage
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1121:19                                   _CustomZone.registerUnaryCallback
  dart:async/stream_impl.dart 146:17                             _BufferingStreamSubscription._registerDataHandler
  dart:async/stream_impl.dart 118:19                             new _BufferingStreamSubscription.zoned
  dart:async/stream_impl.dart 113:14                             new _BufferingStreamSubscription
  dart:async/stream_controller.dart 880:9                        new _ControllerSubscription
  dart:async/stream_controller.dart 712:47                       _StreamController._subscribe
  dart:async/stream_controller.dart 860:19                       _ControllerStream._createSubscription
  dart:async/stream_impl.dart 493:9                              _StreamImpl.listen
  package:flutter_tools/src/compile.dart 572:26                  DefaultResidentCompiler.recompile
  package:flutter_tools/src/test/test_compiler.dart 159:60       TestCompiler._onCompilationRequest
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1121:19                                   _CustomZone.registerUnaryCallback
  dart:async-patch/async_patch.dart 83:23                        _asyncThenWrapperHelper
  package:stack_trace/src/stack_zone_specification.dart 126:26   StackZoneSpecification._registerUnaryCallback.<fn>.<fn>
  package:stack_trace/src/stack_zone_specification.dart 208:15   StackZoneSpecification._run
  package:stack_trace/src/stack_zone_specification.dart 126:14   StackZoneSpecification._registerUnaryCallback.<fn>
  dart:async/zone.dart 1198:47                                   _rootRunUnary
  dart:async/zone.dart 1100:19                                   _CustomZone.runUnary
  dart:async/zone.dart 1005:7                                    _CustomZone.runUnaryGuarded
  dart:async/stream_impl.dart 357:11                             _BufferingStreamSubscription._sendData
  dart:async/stream_impl.dart 611:14                             _DelayedData.perform
  dart:async/stream_impl.dart 730:11                             _StreamImplEvents.handleNext
  dart:async/stream_impl.dart 687:7                              _PendingEvents.schedule.<fn>
  package:stack_trace/src/stack_zone_specification.dart 208:15   StackZoneSpecification._run
  package:stack_trace/src/stack_zone_specification.dart 116:48   StackZoneSpecification._registerCallback.<fn>
  dart:async/zone.dart 1182:47                                   _rootRun
  dart:async/zone.dart 1093:19                                   _CustomZone.run
  dart:async/zone.dart 997:7                                     _CustomZone.runGuarded
  dart:async/zone.dart 1037:23                                   _CustomZone.bindCallbackGuarded.<fn>
  package:stack_trace/src/stack_zone_specification.dart 208:15   StackZoneSpecification._run
  package:stack_trace/src/stack_zone_specification.dart 116:48   StackZoneSpecification._registerCallback.<fn>
  dart:async/zone.dart 1190:13                                   _rootRun
  dart:async/zone.dart 1093:19                                   _CustomZone.run
  dart:async/zone.dart 997:7                                     _CustomZone.runGuarded
  dart:async/zone.dart 1037:23                                   _CustomZone.bindCallbackGuarded.<fn>
  dart:async/schedule_microtask.dart 41:21                       _microtaskLoop
  dart:async/schedule_microtask.dart 50:5                        _startMicrotaskLoop
  dart:isolate-patch/isolate_patch.dart 118:13                   _runPendingImmediateCallback
  dart:isolate-patch/timer_impl.dart 404:11                      _Timer._runTimers
  dart:isolate-patch/timer_impl.dart 428:5                       _Timer._handleMessage
  dart:isolate-patch/isolate_patch.dart 168:12                   _RawReceivePortImpl._handleMessage
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1121:19                                   _CustomZone.registerUnaryCallback
  dart:async/stream_impl.dart 146:17                             _BufferingStreamSubscription._registerDataHandler
  dart:async/stream_impl.dart 118:19                             new _BufferingStreamSubscription.zoned
  dart:async/stream_impl.dart 113:14                             new _BufferingStreamSubscription
  dart:async/stream_controller.dart 880:9                        new _ControllerSubscription
  dart:async/stream_controller.dart 712:47                       _StreamController._subscribe
  dart:async/stream_controller.dart 860:19                       _ControllerStream._createSubscription
  dart:async/stream_impl.dart 493:9                              _StreamImpl.listen
  package:flutter_tools/src/test/test_compiler.dart 55:31        new TestCompiler
  package:flutter_tools/src/test/flutter_platform.dart 447:22    FlutterPlatform._startTest
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1121:19                                   _CustomZone.registerUnaryCallback
  dart:async-patch/async_patch.dart 83:23                        _asyncThenWrapperHelper
  package:flutter_tools/src/test/flutter_platform.dart 350:36    FlutterPlatform.loadChannel
  package:flutter_tools/src/test/flutter_platform.dart 303:46    FlutterPlatform.load
  package:test_core/src/runner/loader.dart 224:38                Loader.loadFile.<fn>
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1121:19                                   _CustomZone.registerUnaryCallback
  dart:async-patch/async_patch.dart 83:23                        _asyncThenWrapperHelper
  package:test_core/src/runner/loader.dart                       Loader.loadFile.<fn>
  package:test_core/src/runner/load_suite.dart 97:31             new LoadSuite.<fn>.<fn>
  package:test_core/src/runner/load_suite.dart 107:8             new LoadSuite.<fn>
  package:test_api/src/backend/invoker.dart 231:15               Invoker.waitForOutstandingCallbacks.<fn>
  dart:async/zone.dart 1190:13                                   _rootRun
  dart:async/zone.dart 1093:19                                   _CustomZone.run
  dart:async/zone.dart 1630:10                                   _runZoned
  dart:async/zone.dart 1550:10                                   runZoned
  package:test_api/src/backend/invoker.dart 228:5                Invoker.waitForOutstandingCallbacks
  package:test_api/src/backend/invoker.dart 383:17               Invoker._onRun.<fn>.<fn>.<fn>
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1121:19                                   _CustomZone.registerUnaryCallback
  dart:async-patch/async_patch.dart 83:23                        _asyncThenWrapperHelper
  package:test_api/src/backend/invoker.dart                      Invoker._onRun.<fn>.<fn>.<fn>
  dart:async/zone.dart 1190:13                                   _rootRun
  dart:async/zone.dart 1093:19                                   _CustomZone.run
  dart:async/zone.dart 1630:10                                   _runZoned
  dart:async/zone.dart 1550:10                                   runZoned
  package:test_api/src/backend/invoker.dart 370:9                Invoker._onRun.<fn>.<fn>
  dart:async/zone.dart 1190:13                                   _rootRun
  dart:async/zone.dart 1093:19                                   _CustomZone.run
  dart:async/zone.dart 1630:10                                   _runZoned
  dart:async/zone.dart 1550:10                                   runZoned
  package:test_api/src/backend/invoker.dart 150:7                Invoker.guard
  package:test_api/src/backend/invoker.dart 413:15               Invoker._guardIfGuarded
  package:test_api/src/backend/invoker.dart 369:7                Invoker._onRun.<fn>
  package:stack_trace/src/chain.dart 104:24                      Chain.capture.<fn>
  dart:async/zone.dart 1190:13                                   _rootRun
  dart:async/zone.dart 1093:19                                   _CustomZone.run
  dart:async/zone.dart 1630:10                                   _runZoned
  dart:async/zone.dart 1550:10                                   runZoned
  package:stack_trace/src/chain.dart 102:12                      Chain.capture
  package:test_api/src/backend/invoker.dart 368:11               Invoker._onRun
  package:test_api/src/backend/live_test_controller.dart 153:11  LiveTestController.run
  dart:async/future.dart 201:37                                  new Future.microtask.<fn>
  dart:async/zone.dart 1182:47                                   _rootRun
  dart:async/zone.dart 1093:19                                   _CustomZone.run
  dart:async/zone.dart 997:7                                     _CustomZone.runGuarded
  dart:async/zone.dart 1037:23                                   _CustomZone.bindCallbackGuarded.<fn>
  dart:async/zone.dart 1190:13                                   _rootRun
  dart:async/zone.dart 1093:19                                   _CustomZone.run
  dart:async/zone.dart 997:7                                     _CustomZone.runGuarded
  dart:async/zone.dart 1037:23                                   _CustomZone.bindCallbackGuarded.<fn>
  dart:async/schedule_microtask.dart 41:21                       _microtaskLoop
  dart:async/schedule_microtask.dart 50:5                        _startMicrotaskLoop
  dart:isolate-patch/isolate_patch.dart 118:13                   _runPendingImmediateCallback
  dart:isolate-patch/isolate_patch.dart 169:5                    _RawReceivePortImpl._handleMessage

The main problem is caused by the time_machine package, I commented a temporary fix in the corresponding issue: Dana-Ferguson/time_machine#44.

However, even when overriding the meta package dependency, most of the tests still break, mainly because of the null-safety framework changes. I need to look into this more, for now we can just use Flutter 1.22.

[IoanaAlexandru]

I made the actions use Flutter 1.22 for now, in commit a23b75c