R Under development (unstable) (2023-07-03 r84633 ucrt) -- "Unsuffered Consequences"
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> ### suppressPackageStartupMessages(...)  as we have an *.Rout.save to Rdiff against
> stopifnot(suppressPackageStartupMessages(require(lme4)))
> options(show.signif.stars = FALSE, useFancyQuotes=FALSE)
> 
> source(system.file("test-tools-1.R", package = "Matrix"))# identical3() etc
Loading required package: tools
> all.EQ <- function(u,v, ...) all.equal.X(u, v, except = c("call", "frame"), ...)
> S4_2list <- function(obj) {   # no longer used
+    sn <- slotNames(obj)
+    structure(lapply(sn, slot, object = obj), .Names = sn)
+ }
> 
> if (lme4:::testLevel() <= 1)
+     quit("no")
> proc.time()
   user  system elapsed 
   1.12    0.09    1.21