R version 4.5.0 alpha (2025-03-23 r88038 ucrt)
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Platform: x86_64-w64-mingw32/x64

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> library(testthat)
> library(pkgbuild)
> 
> test_check("pkgbuild")
WARNING: Rtools is required to build R packages, but is not currently installed.

Please download and install the appropriate version of Rtools for 4.5.0 from
https://cran.r-project.org/bin/windows/Rtools/.
WARNING: Rtools is required to build R packages, but is not currently installed.

Please download and install the appropriate version of Rtools for 4.5.0 from
https://cran.r-project.org/bin/windows/Rtools/.
WARNING: Rtools is required to build R packages, but is not currently installed.

Please download and install the appropriate version of Rtools for 4.5.0 from
https://cran.r-project.org/bin/windows/Rtools/.
[ FAIL 0 | WARN 0 | SKIP 14 | PASS 142 ]

══ Skipped tests (14) ══════════════════════════════════════════════════════════
• On CRAN (13): 'test-build-process.R:23:3', 'test-build-process.R:43:3',
  'test-build.R:192:5', 'test-compiler.R:38:7', 'test-exclude.R:11:3',
  'test-exclude.R:66:3', 'test-exclude.R:110:3', 'test-exclude.R:125:3',
  'test-exclude.R:134:3', 'test-exclude.R:141:3', 'test-style.R:3:3',
  'test-utils.R:87:3', 'test-withr.R:3:3'
• On Windows (1): 'test-exclude.R:150:3'

[ FAIL 0 | WARN 0 | SKIP 14 | PASS 142 ]
> 
> proc.time()
   user  system elapsed 
   4.37    1.45   53.18