Error(s) in re-building vignettes:
  ...
--- re-building 'pstr-vignette.Rmd' using rmarkdown
 ----------- FAILURE REPORT -------------- 
 --- failure: the condition has length > 1 ---
 --- srcref --- 
: 
 --- package (from environment) --- 
PSTR
 --- call from context --- 
LMTEST(iT = iT, iN = iN, vU = vU, mX = mX, mW = mW, mM = mM, 
    s2 = s2, mX2 = mX2, invXX = invXX)
 --- call from argument --- 
if (class(invS1) == "try-error") {
    ttmp = svd(S1)
    invS1 = ttmp$u %*% diag(1/ttmp$d, length(ttmp$d)) %*% t(ttmp$u)
}
 --- R stacktrace ---
where 1: LMTEST(iT = iT, iN = iN, vU = vU, mX = mX, mW = mW, mM = mM, 
    s2 = s2, mX2 = mX2, invXX = invXX)
where 2: LinTest(use = pstr)
where 3: eval(expr, envir, enclos)
where 4: eval(expr, envir, enclos)
where 5: withVisible(eval(expr, envir, enclos))
where 6: withCallingHandlers(withVisible(eval(expr, envir, enclos)), warning = wHandler, 
    error = eHandler, message = mHandler)
where 7: handle(ev <- withCallingHandlers(withVisible(eval(expr, envir, 
    enclos)), warning = wHandler, error = eHandler, message = mHandler))
where 8: timing_fn(handle(ev <- withCallingHandlers(withVisible(eval(expr, 
    envir, enclos)), warning = wHandler, error = eHandler, message = mHandler)))
where 9: evaluate_call(expr, parsed$src[[i]], envir = envir, enclos = enclos, 
    debug = debug, last = i == length(out), use_try = stop_on_error != 
        2L, keep_warning = keep_warning, keep_message = keep_message, 
    output_handler = output_handler, include_timing = include_timing)
where 10: evaluate::evaluate(...)
where 11: evaluate(code, envir = env, new_device = FALSE, keep_warning = !isFALSE(options$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: 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$render, options)))
where 13: block_exec(params)
where 14: call_block(x)
where 15: process_group.block(group)
where 16: process_group(group)
where 17: withCallingHandlers(if (tangle) process_tangle(group) else process_group(group), 
    error = function(e) {
        setwd(wd)
        cat(res, sep = "\n", file = output %n% "")
        message("Quitting from lines ", paste(current_lines(i), 
            collapse = "-"), " (", knit_concord$get("infile"), 
            ") ")
    })
where 18: process_file(text, output)
where 19: knitr::knit(knit_input, knit_output, envir = envir, quiet = quiet, 
    encoding = encoding)
where 20: rmarkdown::render(file, encoding = encoding, quiet = quiet, envir = globalenv(), 
    ...)
where 21: vweave_rmarkdown(...)
where 22: engine$weave(file, quiet = quiet, encoding = enc)
where 23: doTryCatch(return(expr), name, parentenv, handler)
where 24: tryCatchOne(expr, names, parentenv, handlers[[1L]])
where 25: tryCatchList(expr, classes, parentenv, handlers)
where 26: tryCatch({
    engine$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 27: tools:::buildVignettes(dir = "/home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/PSTR.Rcheck/vign_test/PSTR", 
    ser_elibs = "/tmp/Rtmpi1y2AB/file787a2b7148dc.rds")

 --- value of length: 2 type: logical ---
[1] FALSE FALSE
 --- function from context --- 
function (iT, iN, vU, mX, mW, mM, s2, mX2, invXX) 
{
    df1 = ncol(mW)
    df2 = iT * iN - df1 - iN - ncol(mX)
    mW2 = mM %*% mW
    mXW2 = crossprod(mX2, mW2)
    S1 = (crossprod(mW2) - t(mXW2) %*% invXX %*% mXW2) * s2
    invS1 = try(chol2inv(chol(S1)), silent = T)
    if (class(invS1) == "try-error") {
        ttmp = svd(S1)
        invS1 = ttmp$u %*% diag(1/ttmp$d, length(ttmp$d)) %*% 
            t(ttmp$u)
    }
    vW2U = crossprod(mW2, vU)
    LM1_X = c(t(vW2U) %*% invS1 %*% vW2U)
    PV1_X = 1 - pchisq(LM1_X, df = df1)
    LM1_F = LM1_X * df2/(iT * iN * df1)
    PV1_F = 1 - pf(LM1_F, df1 = df1, df2 = df2)
    mZ = cbind(mX2, mW2)
    Delta = 0
    for (nter in 0:(iN - 1) * iT) {
        itmp = (nter + 1):(nter + iT)
        tmp = t(mZ[itmp, ]) %*% vU[itmp] %*% t(vU[itmp]) %*% 
            mZ[itmp, ]
        Delta = Delta + tmp
    }
    tmp = cbind(-crossprod(mXW2, invXX), diag(1, df1))
    S2 = tmp %*% Delta %*% t(tmp)
    invS2 = try(chol2inv(chol(S2)), silent = T)
    if (class(invS2) == "try-error") {
        ttmp = svd(S2)
        invS2 = ttmp$u %*% diag(1/ttmp$d, length(ttmp$d)) %*% 
            t(ttmp$u)
    }
    LM2_X = c(t(vW2U) %*% invS2 %*% vW2U)
    PV2_X = 1 - pchisq(LM2_X, df = df1)
    LM2_F = LM2_X * df2/(iT * iN * df1)
    PV2_F = 1 - pf(LM2_F, df1 = df1, df2 = df2)
    return(list(LM1_X = LM1_X, PV1_X = PV1_X, LM1_F = LM1_F, 
        PV1_F = PV1_F, LM2_X = LM2_X, PV2_X = PV2_X, LM2_F = LM2_F, 
        PV2_F = PV2_F))
}
<bytecode: 0x6b4a6e8>
<environment: namespace:PSTR>
 --- function search by body ---
Function LMTEST in namespace PSTR has this body.
 ----------- END OF FAILURE REPORT -------------- 
Fatal error: the condition has length > 1