Unclear Retail Market errors

[jk1066]

If the retail market does not clear (i.e., we get to else in clear_market, a series of logs are written, all at the INFO level. One such error, as written, seems like it should be higher than info level:

line 302:

log.info("ERROR retail intersection not found (not supposed to happen)" +
                     "\n  quantities: " + str(buyer_quantities) +
                     "\n  buyer_prices: " + str(buyer_prices) +
                     "\n  seller_prices: " + str(seller_prices))

Unclear why this is okay and simulation can continue if this is "not supposed to happen". Suggest clearer logging messages and explanations.