[ADD] Add some checkers to be more explicit with the errors

[FIX] Use standard chars to avoid UnicodeEncodeError

[FIX] Properly check the env vars

[IMP] Add more descriptive error messages

[IMP] Add python version as required in the environment

[FIX] Use group names instead of numbers
1 job for master-add_checkers-truiz in 25 seconds (queued for 28 seconds)
Status Job ID Name Coverage
  Test
passed #267141
lint
test_install

00:00:25