CATS crashes when having low duration (5min)

[abhidg]

At datetime Thu 3 Oct 2024 17:51:23 UTC, when running from 34c951e:

> python -m cats -d 4 --loc RG1
WARNING:root:config file not found
WARNING:root:Unspecified carbon intensity forecast service, using carbonintensity.org.uk
Traceback (most recent call last):
  File "/Users/abhidg/.pyenv/versions/3.10.12/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/runpy.py", line 196, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/Users/abhidg/.pyenv/versions/3.10.12/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "/Users/abhidg/ghq/github.com/GreenScheduler/cats/cats/__main__.py", line 4, in <module>
    main()
  File "/Users/abhidg/ghq/github.com/GreenScheduler/cats/cats/__init__.py", line 288, in main
    now_avg, best_avg = get_avg_estimates(CI_forecast, duration=duration)
  File "/Users/abhidg/ghq/github.com/GreenScheduler/cats/cats/optimise_starttime.py", line 26, in get_avg_estimates
    return wf[0], min(wf)
  File "/Users/abhidg/ghq/github.com/GreenScheduler/cats/cats/forecast.py", line 147, in __iter__
    yield self.__getitem__(index)
  File "/Users/abhidg/ghq/github.com/GreenScheduler/cats/cats/forecast.py", line 97, in __getitem__
    self.data[index + 1],
IndexError: list index out of range

24 minutes works fine:

> python -m cats -d 24 --loc RG1
Best job start time 2024-10-05 17:22:48.424186+05:30
Carbon intensity if job started now       = 286.16 gCO2eq/kWh
Carbon intensity at optimal time          = 95.41 gCO2eq/kWh

As does higher values, with 2850 minutes being the maximum:

> python -m cats -d 2850 --loc RG1
Best job start time 2024-10-03 23:23:33.355866+05:30
Carbon intensity if job started now       = 167.13 gCO2eq/kWh
Carbon intensity at optimal time          = 167.13 gCO2eq/kWh

Attached cats_cache.sqlite.zip