Trying to Compile from a Buggy Codebase

In tribute to Robert Frost's Stopping by Woods on a Snowy Evening

Trying to Compile from a Buggy Codebase

Whose errored code this is, I know:
We fired him three years ago.
But still his bug-filled code is here,
And makes the server run so slow.

My chest starts to constrict with fear,
And my eyes begin to tear—
And my knees will even shake!—
With each bug report I hear.

Why do I permit this ache,
This long-gone other man's mistake,
To cause me now to moan and weep?
'Cause ev'ry night the thing will break!

Each change I make breaks something deep.
But I have unit tests to keep
Me sane these days before I sleep,
Yes, sane these days before I sleep.