Scheduler running is not correct run in UTC/Local mode

[rts-gordon]

Hi @BinChengZhao
There are some errors in UTC mode, would you like to have a look at this, thank you.

Describe the bug
Scheduler running is not correct in UTC mode

To Reproduce
define a task scheduler like this, run in UTC mode:

        let task_builder = TaskBuilder::default()
            .set_frequency_repeated_by_cron_str(&dotenv::var("0 15 06 * * * *“)
            .set_schedule_iterator_time_zone(ScheduleIteratorTimeZone::Utc)
            .set_task_id(1)
            .spawn(body)?;

The task will be run one hour in advance(UTC: 05:15), also run in Local mode.

Environment:
Ubuntu Linux 20,
delay_timer: main branch and feature/for_le_rust_156 branch.

[BinChengZhao]

Hi @BinChengZhao There are some errors in UTC mode, would you like to have a look at this, thank you.

Describe the bug Scheduler running is not correct in UTC mode

To Reproduce define a task scheduler like this, run in UTC mode:

        let task_builder = TaskBuilder::default()
            .set_frequency_repeated_by_cron_str(&dotenv::var("0 15 06 * * * *“)
            .set_schedule_iterator_time_zone(ScheduleIteratorTimeZone::Utc)
            .set_task_id(1)
            .spawn(body)?;

The task will be run one hour in advance(UTC: 05:15), also run in Local mode.

Environment: Ubuntu Linux 20, delay_timer: main branch and feature/for_le_rust_156 branch.

Temporarily, you can use the feature/for_le_rust_156 branch to lock the commit-id to avoid being plagued by bugs.

The latest delay-timer v0.11.0 will be released as well, with new features and fixes on the way.

[rts-gordon]

Thank you @BinChengZhao