unittest fail after data.table update

[qgeissmann]

path <- damr_example("M064.txt")
dt <- read_dam_file(path, region_id = c(1:3), start_datetime = "2017-06-30 15:00:00")
print(dt)

We get:

Error in setnames(ans, col.names) : 
  Can't assign 37 names to a 42 column data.table