Suppress reader parse problems in r

I am currently reading in a file using the package `readr`. The idea is to use `read_delim` to read in row for row to find the maximum columns in my unstructured data file. The code outputs that there are `parsing` problems. I know of these and will deal with column type after import. Is there a way to turn off the `problems()` as the usual `options(warn)` is not working ``` i=1 max_col <- 0 options(warn = -1) while(i != "stop") { n_col<- ncol(read_delim("file.txt", n_max = 1, skip = i, delim="\t")) if(n_col > max_col) { max_col <- n_col print(max_col) } i <- i+1 if(n_col==0) i<-"stop" } options(warn = 0) ``` The output to console that I am trying to suppress is the following: ``` .See problems(...) for more details. Warning: 11 parsing failures. row col expected actual 1 1####4 valid date 1###8 ```