The most outrageous moments of my career

[volcano63]

There's this guy in the office - in one of his commits he has added a dot to this line

# This Python file uses the following encoding: utf-8

This is the only thing he changed in the module - obviously, someone can actually mistake this line for a user-written comment   , but since utf-8. is illegal encoding, the build was broken. So I was forced to add below this line the following warning

##################################################################
#                          IMPORTANT
# The line above is not a comment - it should not be changed!!!!!
##################################################################

and I also sent a mail to colleagues with the following warning

Dear all,
Lines like one below are not comments – they are encoding instructions. Load <No> was broken by adding dot to it – see <ticket>
# This Python file uses the following encoding: utf-8
This is the way encoding is defined when interpreter is not specified with a shebang line – which is not needed, when a module is not executable on its own.
See PEP-0263 for details

In just 2 days the same person broke the load again - by creating circular import for the sake of .... annotation  

Obviously, he did not test his code after either of those "cosmetic" changes