spread_draws calls dpylr::combine, which is now depreciated

[hhau]

I cannot for the life of me find whereabouts in tidybayes this happens though.

library(tidybayes)
library(brms)
#> Loading required package: Rcpp
#> Loading 'brms' package (version 2.12.0). Useful instructions
#> can be found by typing help('brms'). A more detailed introduction
#> to the package is available through vignette('brms_overview').
#> 
#> Attaching package: 'brms'
#> The following objects are masked from 'package:tidybayes':
#> 
#>     dstudent_t, pstudent_t, qstudent_t, rstudent_t
#> The following object is masked from 'package:stats':
#> 
#>     ar
library(tibble)

set.seed(5)
n = 10
n_condition = 5
ABC =
  tibble(
    condition = rep(c("A","B","C","D","E"), n),
    response = rnorm(n * 5, c(0,1,2,1,-1), 0.5)
  )

m = brm(
  response ~ (1|condition),
  data = ABC,
  prior = c(
    prior(normal(0, 1), class = Intercept),
    prior(student_t(3, 0, 1), class = sd),
    prior(student_t(3, 0, 1), class = sigma)
  ),
  control = list(adapt_delta = .99),
  cores = 4
)
#> Compiling the C++ model
#> Start sampling

m %>%
  spread_draws(r_condition[condition,term]) %>%
  head(10)
#> Warning: `combine()` is deprecated as of dplyr 1.0.0.
#> Please use `vctrs::vec_c()` instead.
#> This warning is displayed once every 8 hours.
#> Call `lifecycle::last_warnings()` to see where this warning was generated.
#> # A tibble: 10 x 6
#> # Groups:   condition, term [1]
#>    condition term      r_condition .chain .iteration .draw
#>    <chr>     <chr>           <dbl>  <int>      <int> <int>
#>  1 A         Intercept     -1.00        1          1     1
#>  2 A         Intercept     -0.454       1          2     2
#>  3 A         Intercept     -0.530       1          3     3
#>  4 A         Intercept     -0.0670      1          4     4
#>  5 A         Intercept     -0.0380      1          5     5
#>  6 A         Intercept     -0.236       1          6     6
#>  7 A         Intercept      0.103       1          7     7
#>  8 A         Intercept     -0.122       1          8     8
#>  9 A         Intercept     -0.479       1          9     9
#> 10 A         Intercept     -0.263       1         10    10

^{Created on 2020-08-11 by the reprex package (v0.3.0)}

and the session info

R version 3.6.3 (2020-02-29)
Platform: x86_64-apple-darwin15.6.0 (64-bit)
Running under: macOS High Sierra 10.13.6

Matrix products: default
BLAS:   /Library/Frameworks/R.framework/Versions/3.6/Resources/lib/libRblas.0.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/3.6/Resources/lib/libRlapack.dylib

locale:
[1] en_GB.UTF-8/en_GB.UTF-8/en_GB.UTF-8/C/en_GB.UTF-8/en_GB.UTF-8

attached base packages:
[1] stats     graphics  grDevices datasets  utils     methods   base     

other attached packages:
[1] tibble_3.0.1    brms_2.12.0     Rcpp_1.0.4      tidybayes_2.1.1

loaded via a namespace (and not attached):
 [1] Brobdingnag_1.2-6    tidyr_1.0.2          gtools_3.8.2        
 [4] StanHeaders_2.19.0   threejs_0.3.3        assertthat_0.2.1    
 [7] shiny_1.4.0.2        distributional_0.1.0 stats4_3.6.3        
[10] ggdist_2.2.0         renv_0.9.3           backports_1.1.5     
[13] pillar_1.4.3         lattice_0.20-41      glue_1.3.2          
[16] arrayhelpers_1.1-0   digest_0.6.25        promises_1.1.0      
[19] colorspace_1.4-1     htmltools_0.4.0      httpuv_1.5.2        
[22] Matrix_1.2-18        plyr_1.8.6           dygraphs_1.1.1.6    
[25] pkgconfig_2.0.3      rstan_2.19.3         svUnit_0.7-12       
[28] purrr_0.3.3          xtable_1.8-4         mvtnorm_1.1-0       
[31] scales_1.1.0         processx_3.4.2       later_1.0.0         
[34] bayesplot_1.7.2      generics_0.0.2       farver_2.0.3        
[37] ggplot2_3.3.0        ellipsis_0.3.0       DT_0.13             
[40] shinyjs_1.1          cli_2.0.2            magrittr_1.5        
[43] crayon_1.3.4         mime_0.9             ps_1.3.2            
[46] fansi_0.4.1          nlme_3.1-145         forcats_0.5.0       
[49] xts_0.12-0           pkgbuild_1.0.6       colourpicker_1.0    
[52] prettyunits_1.1.1    rsconnect_0.8.16     tools_3.6.3         
[55] loo_2.2.0            lifecycle_0.2.0      matrixStats_0.56.0  
[58] stringr_1.4.0        munsell_0.5.0        callr_3.4.3         
[61] compiler_3.6.3       rlang_0.4.7          grid_3.6.3          
[64] ggridges_0.5.2       htmlwidgets_1.5.1    crosstalk_1.1.0.1   
[67] igraph_1.2.5         miniUI_0.1.1.1       base64enc_0.1-3     
[70] codetools_0.2-16     gtable_0.3.0         inline_0.3.15       
[73] abind_1.4-5          markdown_1.1         reshape2_1.4.3      
[76] R6_2.4.1             gridExtra_2.3        rstantools_2.0.0    
[79] zoo_1.8-8            bridgesampling_1.0-0 dplyr_1.0.1         
[82] utf8_1.1.4           fastmap_1.0.1        shinystan_2.5.0     
[85] shinythemes_1.1.2    stringi_1.4.6        parallel_3.6.3      
[88] vctrs_0.3.2          tidyselect_1.1.0     coda_0.19-3

[mjskay]

I believe that error was thrown inside either tibble or tidyr in an older version... try updating all your packages and see if the error goes away?

[hhau]

tidyr was the culprit, updating from 1.0.2 to 1.1.1 made the error disappear. Thanks! (I didn't want to update all my packages because I'm using renv to manage rstan / StanHeaders versions)