Error(s) in re-building vignettes:
--- re-building 'cubature.Rmd' using rmarkdown
Warning in (function (..., times = 100L, order = c("random", "inorder",  :
  Could not measure a positive execution time for 
                            541 evaluations.
Warning in timer_error(warmup) :
  Could not measure timer error. Your clock might lack precision.
Warning in timer_error(warmup) :
  Could not measure timer error. Your clock might lack precision.
Warning in timer_error(warmup) :
  Could not measure timer error. Your clock might lack precision.
Warning in timer_error(warmup) :
  Could not measure timer error. Your clock might lack precision.
Warning in timer_error(warmup) :
  Could not measure timer error. Your clock might lack precision.
Quitting from lines 266-272 (cubature.Rmd) 
Error: processing vignette 'cubature.Rmd' failed with diagnostics:
All timed evaluations were either smaller than the estimated 
                 timer error or zero. The most likely cause is a low resolution clock.
--- failed re-building 'cubature.Rmd'

--- re-building 'version2.Rmd' using rmarkdown
Cuhre input parameters:
  ndim 3
  ncomp 1
  nvec 1
  epsrel 1e-05
  epsabs 1e-12
  flags 6
  mineval 0
  maxeval 1000000
  key 0


Iteration 1:  127 integrand evaluations so far
[1] 0.330292 +- 0.16199  	chisq 0 (0 df)

Iteration 2:  381 integrand evaluations so far
[1] 0.334551 +- 0.0726708  	chisq 0.000575398 (1 df)

Iteration 3:  635 integrand evaluations so far
[1] 0.334084 +- 0.0126583  	chisq 0.000588724 (2 df)

Iteration 4:  889 integrand evaluations so far
[1] 0.334093 +- 0.00467064  	chisq 0.000590497 (3 df)

Iteration 5:  1143 integrand evaluations so far
[1] 0.33411 +- 0.00213905  	chisq 0.00060536 (4 df)

Iteration 6:  1397 integrand evaluations so far
[1] 0.334113 +- 0.000658593  	chisq 0.000616501 (5 df)

Iteration 7:  1651 integrand evaluations so far
[1] 0.334113 +- 0.000290809  	chisq 0.000617561 (6 df)

Iteration 8:  1905 integrand evaluations so far
[1] 0.334113 +- 4.6551e-05  	chisq 0.000617624 (7 df)

Iteration 9:  2159 integrand evaluations so far
[1] 0.334113 +- 3.69574e-05  	chisq 0.000617628 (8 df)

Iteration 10:  2413 integrand evaluations so far
[1] 0.334113 +- 6.66791e-05  	chisq 0.000623039 (9 df)

Iteration 11:  2667 integrand evaluations so far
[1] 0.334113 +- 2.65953e-05  	chisq 0.000637045 (10 df)

Iteration 12:  2921 integrand evaluations so far
[1] 0.334113 +- 3.88133e-05  	chisq 0.000639548 (11 df)

Iteration 13:  3175 integrand evaluations so far
[1] 0.334113 +- 2.10511e-05  	chisq 0.000643652 (12 df)

Iteration 14:  3429 integrand evaluations so far
[1] 0.334113 +- 1.31307e-05  	chisq 0.000650985 (13 df)

Iteration 15:  3683 integrand evaluations so far
[1] 0.334113 +- 8.69938e-06  	chisq 0.000654887 (14 df)

Iteration 16:  3937 integrand evaluations so far
[1] 0.334113 +- 1.88417e-05  	chisq 0.000655651 (15 df)

Iteration 17:  4191 integrand evaluations so far
[1] 0.334113 +- 1.59906e-05  	chisq 0.000656605 (16 df)

Iteration 18:  4445 integrand evaluations so far
[1] 0.334113 +- 4.85581e-06  	chisq 0.000660554 (17 df)

Iteration 19:  4699 integrand evaluations so far
[1] 0.334113 +- 2.22627e-06  	chisq 0.000668287 (18 df)
--- finished re-building 'version2.Rmd'

SUMMARY: processing the following file failed:
  'cubature.Rmd'

Error: Vignette re-building failed.
Execution halted