R-devel has a new runtime check in sprintf() that all arguments are used
by the format and this is showing one or more warnings in the checks of
these packages, usually in the examples. E.g.
Warning in sprintf("%s$", extension, ignore.case = TRUE) :
argument not used by format
Warning in sprintf("%s", getFunctionLinks(tokens[w]),
tokens[w], :
argument not used by format
Please investigate (by running R CMD check with the latest R-devel and
grepping the .Rcheck directory). In some cases the warning seems to be
from another package, usually one with the same maintainer. If from one
not on this list, please let CRAN and its maintainer know. If you think
this is a false positive, please contact Tomas Kalibera (in Cc:).
This issue has been automatically locked. If you believe you have found a related problem, please file a new issue (with a reprex: https://reprex.tidyverse.org) and link to this issue.