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Code should be placed in three backticks as shown below

* installing *source* package 'BSgenome.Osativa.MSU.MSU7' ...
** using staged installation
** R
** inst
** byte-compile and prepare package for lazy loading
Note: possible error in 'BSgenome(organism = "Oryza sativa", ': 参数没有用(nmask_per_seq = .nmask_per_seq, masks_pkgname = pkgname, masks_dirpath = extdata_dirpath) 
** help
*** installing help indices
  converting help for package 'BSgenome.Osativa.MSU.MSU7'
    finding HTML links ... 好了
    package                                 html  
** building package indices
** testing if installed package can be loaded from temporary location
*** arch - i386
Error: package or namespace load failed for 'BSgenome.Osativa.MSU.MSU7':
 .onLoad failed in loadNamespace() for 'BSgenome.Osativa.MSU.MSU7', details:
  call: BSgenome(organism = "Oryza sativa", species = "Rice", provider = "MSU", 
  error: 参数没有用(nmask_per_seq = .nmask_per_seq, masks_pkgname = pkgname, masks_dirpath = extdata_dirpath)
错误: 载入失败
停止执行
*** arch - x64
Error: package or namespace load failed for 'BSgenome.Osativa.MSU.MSU7':
 .onLoad failed in loadNamespace() for 'BSgenome.Osativa.MSU.MSU7', details:
  call: BSgenome(organism = "Oryza sativa", species = "Rice", provider = "MSU", 
  error: 参数没有用(nmask_per_seq = .nmask_per_seq, masks_pkgname = pkgname, masks_dirpath = extdata_dirpath)
错误: 载入失败
停止执行
ERROR: loading failed for 'i386', 'x64'
* removing 'D:/Program Files/R/R-4.0.4/library/BSgenome.Osativa.MSU.MSU7'

This is fixed in BSgenome.Osativa.MSU.MSU7 0.99.2 which will become available in the next 3 hours. Sorry for the inconvenience.