Error(s) in re-building vignettes:
  ...
--- re-building ‘loosebirdtag.Rmd’ using rmarkdown
Warning in rabi::rs_IDs(total.length, redundancy, alphabet) :
  NOTE: Reed-Solomon codes require the 'alphabet size' (e.g. the number of paint colors you have) to be a prime number. Automatically adjusting to use an alphabet size 7 instead of the entered value of 8.
Warning in rabi::rs_IDs(total.length = 5, redundancy = 2, alphabet = 8) :
  NOTE: Reed-Solomon codes require the 'alphabet size' (e.g. the number of paint colors you have) to be a prime number. Automatically adjusting to use an alphabet size 7 instead of the entered value of 8.
 ----------- FAILURE REPORT -------------- 
 --- failure: the condition has length > 1 ---
 --- srcref --- 
: 
 --- package (from environment) --- 
rabi
 --- call from context --- 
rabi::tweaked_IDs(combos1, redundancy, num.tries = 1)
 --- call from argument --- 
if (class(combos) == "matrix") {
    combos <- split(combos, 1:nrow(combos))
    names(combos) <- NULL
} else if (class(combos) != "list") {
    stop("Error: the variable 'combos' must be either a list of numeric sequences or a matrix, where each row is a unique sequence. See the examples for a better idea.")
}
 --- R stacktrace ---
where 1: rabi::tweaked_IDs(combos1, redundancy, num.tries = 1)
where 2: eval(expr, envir, enclos)
where 3: eval(expr, envir, enclos)
where 4: withVisible(eval(expr, envir, enclos))
where 5: withCallingHandlers(withVisible(eval(expr, envir, enclos)), warning = wHandler, 
    error = eHandler, message = mHandler)
where 6: handle(ev <- withCallingHandlers(withVisible(eval(expr, envir, 
    enclos)), warning = wHandler, error = eHandler, message = mHandler))
where 7: timing_fn(handle(ev <- withCallingHandlers(withVisible(eval(expr, 
    envir, enclos)), warning = wHandler, error = eHandler, message = mHandler)))
where 8: evaluate_call(expr, parsed$src[[i]], envir = envir, enclos = enclos, 
    debug = debug, last = i == length(out), use_try = stop_on_error != 
        2L, keep_warning = keep_warning, keep_message = keep_message, 
    output_handler = output_handler, include_timing = include_timing)
where 9: evaluate::evaluate(...)
where 10: evaluate(code, envir = env, new_device = FALSE, keep_warning = !isFALSE(options$warning), 
    keep_message = !isFALSE(options$message), stop_on_error = if (options$error && 
        options$include) 0L else 2L, output_handler = knit_handlers(options$render, 
        options))
where 11: in_dir(input_dir(), evaluate(code, envir = env, new_device = FALSE, 
    keep_warning = !isFALSE(options$warning), keep_message = !isFALSE(options$message), 
    stop_on_error = if (options$error && options$include) 0L else 2L, 
    output_handler = knit_handlers(options$render, options)))
where 12: block_exec(params)
where 13: call_block(x)
where 14: process_group.block(group)
where 15: process_group(group)
where 16: withCallingHandlers(if (tangle) process_tangle(group) else process_group(group), 
    error = function(e) {
        setwd(wd)
        cat(res, sep = "\n", file = output %n% "")
        message("Quitting from lines ", paste(current_lines(i), 
            collapse = "-"), " (", knit_concord$get("infile"), 
            ") ")
    })
where 17: process_file(text, output)
where 18: knitr::knit(knit_input, knit_output, envir = envir, quiet = quiet, 
    encoding = encoding)
where 19: rmarkdown::render(file, encoding = encoding, quiet = quiet, envir = globalenv(), 
    ...)
where 20: vweave_rmarkdown(...)
where 21: engine$weave(file, quiet = quiet, encoding = enc)
where 22: doTryCatch(return(expr), name, parentenv, handler)
where 23: tryCatchOne(expr, names, parentenv, handlers[[1L]])
where 24: tryCatchList(expr, classes, parentenv, handlers)
where 25: tryCatch({
    engine$weave(file, quiet = quiet, encoding = enc)
    setwd(startdir)
    output <- find_vignette_product(name, by = "weave", engine = engine)
    if (!have.makefile && vignette_is_tex(output)) {
        texi2pdf(file = output, clean = FALSE, quiet = quiet)
        output <- find_vignette_product(name, by = "texi2pdf", 
            engine = engine)
    }
    outputs <- c(outputs, output)
}, error = function(e) {
    thisOK <<- FALSE
    fails <<- c(fails, file)
    message(gettextf("Error: processing vignette '%s' failed with diagnostics:\n%s", 
        file, conditionMessage(e)))
})
where 26: tools:::buildVignettes(dir = "/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/rabi.Rcheck/vign_test/rabi", 
    ser_elibs = "/home/hornik/tmp/scratch/RtmpGvIQf2/file32bd441d6788.rds")

 --- value of length: 2 type: logical ---
[1]  TRUE FALSE
 --- function from context --- 
function (combos, redundancy, num.tries = 10, available.colors = NULL) 
{
    {
        if (missing(redundancy)) {
            stop("Error: you need specify to how many erasure events the IDs should be robust. Note, an increase in robustness requires an increase in the total length of the ID. ")
        }
        if (class(num.tries) != "numeric") {
            stop(paste0("Error: the variable 'num.tries' must be of the class 'numeric,' not '", 
                class(num.tries), ".'"))
        }
        if (class(combos) == "matrix") {
            combos <- split(combos, 1:nrow(combos))
            names(combos) <- NULL
        }
        else if (class(combos) != "list") {
            stop("Error: the variable 'combos' must be either a list of numeric sequences or a matrix, where each row is a unique sequence. See the examples for a better idea.")
        }
    }
    tester <- function(combos, redundancy) {
        combo.list <- combos
        x <- sample(1:length(combo.list), 1)
        new.combs <- combo.list[x]
        names(new.combs) <- NULL
        combo.list <- combo.list[seq_distmatrix(combo.list, new.combs, 
            method = "hamming")[, length(new.combs)] > redundancy]
        names(combo.list) <- 1:length(combo.list)
        while (length(combo.list) > 0) {
            x <- sample(1:length(combo.list), 1)
            new.combs[length(new.combs) + 1] <- (combo.list[x])
            combo.list <- combo.list[seq_distmatrix(combo.list, 
                new.combs, method = "hamming")[, length(new.combs)] > 
                redundancy]
            if (length(combo.list) != 0) {
                names(combo.list) <- 1:length(combo.list)
            }
        }
        return(new.combs)
    }
    temp1 <- NULL
    temp2 <- 0
    for (i in 1:num.tries) {
        temp1 <- invisible(tester(combos, redundancy))
        if (length(temp1) > length(temp2)) 
            temp2 <- temp1
    }
    temp2 <- codes_to_colors(temp2, available.colors)
    return(temp2)
}
<bytecode: 0x55704ee8b038>
<environment: namespace:rabi>
 --- function search by body ---
Function tweaked_IDs in namespace rabi has this body.
 ----------- END OF FAILURE REPORT -------------- 
Fatal error: the condition has length > 1