rapidash | Go package for database record or other data | Caching library

I am trying to create a simulation of a large battle between a population of Pokemon. For the sake of providing an example, I will use two Pokemon, named pokemon1 and pokemon2. I want the program to work like the following:

• pokemon1 and pokemon2 will be compared based on their combatScore, which is a score based off of their basic attributes, such as speed, attack, defense, etc.
• pokemon1 and pokemon2 will be randomly paired up with each other and be compared.
• if pokemon1 has a higher combatScore than pokemon2, than pokemon1 advances to the next round (and is removed from the general population and placed into a "victorious" population), and pokemon2 is removed from the general population and added to a "vanquished" population.
• pokemon1 then gains some attributes based off of the traits of pokemon2.
• if pokemon2 (defeated) is legendary, however, they must lose a total of three times before they are finally added to the vanquished population.
• if pokemon1 (victorious) was not legendary but has won three times, it becomes legendary and must therefore lose three times before it is added to the vanquished population.

The rounds are repeated with fewer and fewer victorious populations until there is only one victor left standing.

I have created a do-while loop that will randomly retrieve two Pokemon from the population and compare them based off a number of different conditions using if-else branches:

1. legendary pokemon2 beats legendary pokemon1
2. pokemon2 beats legendary pokemon1
3. legendary pokemon2 beats pokemon1
4. pokemon2 beats pokemon1

And vice versa. The problem I am running into is this: Most of the time, the program runs clean, and round 1 is complete. All of the battles are written to a pokemon.txt file clearly stating who won. Sometimes, however, the program will begin to run and stay in a running state. When I go to check the .txt file, it will be stopped writing mid-sentence around the same location (around line 275).

For now, I just want to run the first round. Here is the code that runs this simulator: