Running ‘spelling.R’
  Running ‘testthat.R’
Running the tests in ‘tests/testthat.R’ failed.
Complete output:
  > library(testthat)
  > library(detrendr)
  > 
  > test_check("detrendr")
  ── 1. Error: best_degree works (@test-best_params.R#82)  ───────────────────────
  STRING_ELT() can only be applied to a 'character vector', not a 'symbol'
  1: ijtiff::read_tif(system.file("extdata", "bleached.tif", package = "detrendr"), msg = FALSE) at testthat/test-best_params.R:82
  2: checkmate::assert_file_exists(path)
  3: checkFileExists(x, access, extension)
  4: qtest(x, "S+")
  
  
   *** caught segfault ***
  address 56, cause 'memory not mapped'
  
  Traceback:
   1: qtest(x, "S+")
   2: checkFileExists(x, access, extension)
   3: checkmate::assert_file_exists(path)
   4: ijtiff::read_tif(system.file("extdata", "bleached.tif", package = "detrendr"))
   5: eval(code, test_env)
   6: eval(code, test_env)
   7: withCallingHandlers({    eval(code, test_env)    if (!handled && !is.null(test)) {        skip_empty()    }}, expectation = handle_expectation, skip = handle_skip, warning = handle_warning,     message = handle_message, error = handle_error)
   8: doTryCatch(return(expr), name, parentenv, handler)
   9: tryCatchOne(expr, names, parentenv, handlers[[1L]])
  10: tryCatchList(expr, names[-nh], parentenv, handlers[-nh])
  11: doTryCatch(return(expr), name, parentenv, handler)
  12: tryCatchOne(tryCatchList(expr, names[-nh], parentenv, handlers[-nh]),     names[nh], parentenv, handlers[[nh]])
  13: tryCatchList(expr, classes, parentenv, handlers)
  14: tryCatch(withCallingHandlers({    eval(code, test_env)    if (!handled && !is.null(test)) {        skip_empty()    }}, expectation = handle_expectation, skip = handle_skip, warning = handle_warning,     message = handle_message, error = handle_error), error = handle_fatal,     skip = function(e) {    })
  15: test_code(desc, code, env = parent.frame())
  16: test_that("best_swaps() works", {    img <- ijtiff::read_tif(system.file("extdata", "bleached.tif",         package = "detrendr"))    set.seed(1)    expect_equal(best_swaps(img, quick = TRUE), 1588366, tolerance = 4000)    expect_error(best_swaps(array(7, dim = rep(1, 4))), paste("Your image is constant: all pixel values are equal to 7.+",         "This type of image is not detrendable."))    for (i in seq_len(77)) {        set.seed(i)        sim_img <- array(rpois(6^4, 8), dim = rep(6, 4))        expect_lt(sum(best_swaps(sim_img, quick = TRUE)), sum(sim_img) *             dim(sim_img)[3])    }})
  17: eval(code, test_env)
  18: eval(code, test_env)
  19: withCallingHandlers({    eval(code, test_env)    if (!handled && !is.null(test)) {        skip_empty()    }}, expectation = handle_expectation, skip = handle_skip, warning = handle_warning,     message = handle_message, error = handle_error)
  20: doTryCatch(return(expr), name, parentenv, handler)
  21: tryCatchOne(expr, names, parentenv, handlers[[1L]])
  22: tryCatchList(expr, names[-nh], parentenv, handlers[-nh])
  23: doTryCatch(return(expr), name, parentenv, handler)
  24: tryCatchOne(tryCatchList(expr, names[-nh], parentenv, handlers[-nh]),     names[nh], parentenv, handlers[[nh]])
  25: tryCatchList(expr, classes, parentenv, handlers)
  26: tryCatch(withCallingHandlers({    eval(code, test_env)    if (!handled && !is.null(test)) {        skip_empty()    }}, expectation = handle_expectation, skip = handle_skip, warning = handle_warning,     message = handle_message, error = handle_error), error = handle_fatal,     skip = function(e) {    })
  27: test_code(NULL, exprs, env)
  28: source_file(path, new.env(parent = env), chdir = TRUE, wrap = wrap)
  29: force(code)
  30: with_reporter(reporter = reporter, start_end_reporter = start_end_reporter,     {        lister$start_file(basename(path))        source_file(path, new.env(parent = env), chdir = TRUE,             wrap = wrap)        end_context()    })
  31: FUN(X[[i]], ...)
  32: lapply(paths, test_file, env = env, reporter = current_reporter,     start_end_reporter = FALSE, load_helpers = FALSE, wrap = wrap)
  33: force(code)
  34: with_reporter(reporter = current_reporter, results <- lapply(paths,     test_file, env = env, reporter = current_reporter, start_end_reporter = FALSE,     load_helpers = FALSE, wrap = wrap))
  35: test_files(paths, reporter = reporter, env = env, stop_on_failure = stop_on_failure,     stop_on_warning = stop_on_warning, wrap = wrap)
  36: test_dir(path = test_path, reporter = reporter, env = env, filter = filter,     ..., stop_on_failure = stop_on_failure, stop_on_warning = stop_on_warning,     wrap = wrap)
  37: test_package_dir(package = package, test_path = test_path, filter = filter,     reporter = reporter, ..., stop_on_failure = stop_on_failure,     stop_on_warning = stop_on_warning, wrap = wrap)
  38: test_check("detrendr")
  An irrecoverable exception occurred. R is aborting now ...