Running 'testthat.R' [7s/7s]
Running the tests in 'tests/testthat.R' failed.
Complete output:
  > library(testthat)
  > library(lutz)
  > 
  > test_check("lutz")
  -- 1. Error: make_ctx creates a working context (@test-tz_lookup.R#4)  ---------
  unable to load shared object '/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/V8/libs/V8.so':
    libv8.so.3.14.5: cannot open shared object file: No such file or directory
  1: make_ctx() at testthat/test-tz_lookup.R:4
  2: V8::v8
  3: getExportedValue(pkg, name)
  4: asNamespace(ns)
  5: getNamespace(ns)
  6: loadNamespace(name)
  7: library.dynam(lib, package, package.lib)
  8: dyn.load(file, DLLpath = DLLpath, ...)
  
  -- 2. Error: warn works with tz_lookup (@test-tz_lookup.R#11)  -----------------
  unable to load shared object '/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/V8/libs/V8.so':
    libv8.so.3.14.5: cannot open shared object file: No such file or directory
  1: expect_warning(tz_lookup_coords(70, 30), "Using 'fast' method") at testthat/test-tz_lookup.R:11
  2: quasi_capture(enquo(object), capture_warnings, label = label)
  3: capture(act$val <- eval_bare(get_expr(quo), get_env(quo)))
  4: withCallingHandlers(code, warning = function(condition) {
         out$push(condition)
         invokeRestart("muffleWarning")
     })
  5: eval_bare(get_expr(quo), get_env(quo))
  6: tz_lookup_coords(70, 30)
  7: tz_lookup_coords_fast(lat, lon, warn)
  8: make_ctx()
  9: V8::v8
  10: getExportedValue(pkg, name)
  11: asNamespace(ns)
  12: getNamespace(ns)
  13: loadNamespace(name)
  14: library.dynam(lib, package, package.lib)
  15: dyn.load(file, DLLpath = DLLpath, ...)
  
  -- 3. Error: tz_lookup_coords works (@test-tz_lookup.R#25)  --------------------
  unable to load shared object '/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/V8/libs/V8.so':
    libv8.so.3.14.5: cannot open shared object file: No such file or directory
  1: expect_equal(tz_lookup_coords(70, 30, warn = FALSE), "Europe/Oslo") at testthat/test-tz_lookup.R:25
  2: quasi_label(enquo(object), label)
  3: eval_bare(get_expr(quo), get_env(quo))
  4: tz_lookup_coords(70, 30, warn = FALSE)
  5: tz_lookup_coords_fast(lat, lon, warn)
  6: make_ctx()
  7: V8::v8
  8: getExportedValue(pkg, name)
  9: asNamespace(ns)
  10: getNamespace(ns)
  11: loadNamespace(name)
  12: library.dynam(lib, package, package.lib)
  13: dyn.load(file, DLLpath = DLLpath, ...)
  
  -- 4. Error: tz_lookup_coords deals with NAs (@test-tz_lookup.R#37)  -----------
  unable to load shared object '/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/V8/libs/V8.so':
    libv8.so.3.14.5: cannot open shared object file: No such file or directory
  1: expect_equal(tz_lookup_coords(NA_real_, NA_real_, warn = FALSE), NA_character_) at testthat/test-tz_lookup.R:37
  2: quasi_label(enquo(object), label)
  3: eval_bare(get_expr(quo), get_env(quo))
  4: tz_lookup_coords(NA_real_, NA_real_, warn = FALSE)
  5: tz_lookup_coords_fast(lat, lon, warn)
  6: make_ctx()
  7: V8::v8
  8: getExportedValue(pkg, name)
  9: asNamespace(ns)
  10: getNamespace(ns)
  11: loadNamespace(name)
  12: library.dynam(lib, package, package.lib)
  13: dyn.load(file, DLLpath = DLLpath, ...)
  
  -- 5. Error: tz_lookup.sf works (@test-tz_lookup.R#51)  ------------------------
  unable to load shared object '/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/V8/libs/V8.so':
    libv8.so.3.14.5: cannot open shared object file: No such file or directory
  1: expect_equal(tz_lookup(pt, warn = FALSE), "Etc/GMT") at testthat/test-tz_lookup.R:51
  2: quasi_label(enquo(object), label)
  3: eval_bare(get_expr(quo), get_env(quo))
  4: tz_lookup(pt, warn = FALSE)
  5: tz_lookup_fast(x, crs, warn)
  6: tz_lookup_fast.sfc(x, crs, warn)
  7: tz_lookup_coords_fast(lat = coords[, 2], lon = coords[, 1], warn = warn)
  8: make_ctx()
  9: V8::v8
  10: getExportedValue(pkg, name)
  11: asNamespace(ns)
  12: getNamespace(ns)
  13: loadNamespace(name)
  14: library.dynam(lib, package, package.lib)
  15: dyn.load(file, DLLpath = DLLpath, ...)
  
  -- 6. Error: tz_lookup.SpatialPoints works (@test-tz_lookup.R#68)  -------------
  unable to load shared object '/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/V8/libs/V8.so':
    libv8.so.3.14.5: cannot open shared object file: No such file or directory
  1: expect_equal(tz_lookup(pt, warn = FALSE), "Etc/GMT") at testthat/test-tz_lookup.R:68
  2: quasi_label(enquo(object), label)
  3: eval_bare(get_expr(quo), get_env(quo))
  4: tz_lookup(pt, warn = FALSE)
  5: tz_lookup_fast(x, crs, warn)
  6: tz_lookup_fast.SpatialPoints(x, crs, warn)
  7: tz_lookup_coords_fast(lat = coords[, 2], lon = coords[, 1], warn = warn)
  8: make_ctx()
  9: V8::v8
  10: getExportedValue(pkg, name)
  11: asNamespace(ns)
  12: getNamespace(ns)
  13: loadNamespace(name)
  14: library.dynam(lib, package, package.lib)
  15: dyn.load(file, DLLpath = DLLpath, ...)
  
  == testthat results  ===========================================================
  OK: 24 SKIPPED: 0 FAILED: 6
  1. Error: make_ctx creates a working context (@test-tz_lookup.R#4) 
  2. Error: warn works with tz_lookup (@test-tz_lookup.R#11) 
  3. Error: tz_lookup_coords works (@test-tz_lookup.R#25) 
  4. Error: tz_lookup_coords deals with NAs (@test-tz_lookup.R#37) 
  5. Error: tz_lookup.sf works (@test-tz_lookup.R#51) 
  6. Error: tz_lookup.SpatialPoints works (@test-tz_lookup.R#68) 
  
  Error: testthat unit tests failed
  Execution halted