R Under development (unstable) (2023-07-03 r84633 ucrt) -- "Unsuffered Consequences"
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Platform: x86_64-w64-mingw32/x64

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> if (.Platform$OS.type != "windows") {
+ 
+     library(lme4)
+ 
+     mySumm <- function(.) {
+         s <- sigma(.)
+         c(beta =getME(., "beta"),
+           sigma = s,
+           sig01 = unname(s * getME(., "theta")))
+     }
+ 
+     fm1 <- lmer(Yield ~ 1|Batch, Dyestuff)
+     boo01 <- bootMer(fm1, mySumm, nsim = 10)
+     boo02 <- bootMer(fm1, mySumm, nsim = 10, use.u = TRUE)
+ 
+     ## boo02 <- bootMer(fm1, mySumm, nsim = 500, use.u = TRUE)
+     if (require(boot)) {
+         boot.ci(boo02,index=2,type="perc")
+     }
+ 
+     fm2 <- lmer(angle ~ recipe * temperature + (1|recipe:replicate), cake)
+     boo03 <- bootMer(fm2, mySumm, nsim = 10)
+     boo04 <- bootMer(fm2, mySumm, nsim = 10, use.u = TRUE)
+ 
+     if (lme4:::testLevel() > 1) {
+         gm1 <- glmer(cbind(incidence, size - incidence) ~ period + (1 | herd),
+                      data = cbpp, family = binomial)
+         boo05 <- bootMer(gm1, mySumm, nsim = 10)
+         boo06 <- bootMer(gm1, mySumm, nsim = 10, use.u = TRUE)
+ 
+         cbpp$obs <- factor(seq(nrow(cbpp)))
+         gm2 <- glmer(cbind(incidence, size - incidence) ~ period +
+                          (1 | herd) +  (1|obs),
+                      family = binomial, data = cbpp)
+         boo03 <- bootMer(gm2, mySumm, nsim = 10)
+         boo04 <- bootMer(gm2, mySumm, nsim = 10, use.u = TRUE)
+     }
+     load(system.file("testdata","culcita_dat.RData",package="lme4"))
+     cmod <- glmer(predation~ttt+(1|block),family=binomial,data=culcita_dat)
+     set.seed(101)
+     ## FIXME: sensitive to step-halving PIRLS tests
+     ## expect_warning(cc <- confint(cmod,method="boot",nsim=10,quiet=TRUE,
+     ##              .progress="txt",PBargs=list(style=3)),"some bootstrap runs failed")
+ 
+ 
+     library(parallel)
+     if (detectCores()>1) {
+         ## http://stackoverflow.com/questions/12983137/how-do-detect-if-travis-ci-or-not
+         travis <- nchar(Sys.getenv("TRAVIS"))>0
+         if(.Platform$OS.type != "windows" && !travis) {
+             boo01P <- bootMer(fm1, mySumm, nsim = 10, parallel="multicore", ncpus=2)
+         }
+ 
+         ## works in Solaris from an interactive console but not ???
+         ##   via R CMD BATCH
+         if (Sys.info()["sysname"] != "SunOS")
+             boo01P.snow <- bootMer(fm1, mySumm, nsim = 10, parallel="snow", ncpus=2)
+     }
+ 
+     set.seed(101)
+     dd <- data.frame(x=runif(200),
+                      f=rep(1:20,each=10),
+                      o=rnorm(200,mean=2))
+     dd$y <- suppressMessages(simulate(~x+(1|f)+offset(o),
+                                       family="poisson",
+                                       newdata=dd,
+                                       newparams=list(theta=1,beta=c(0,2)))[[1]])
+ 
+     ## fails under flexLambda
+     dd$y2 <- suppressMessages(simulate(~x+(1|f)+offset(o),
+                                        family="gaussian",
+                                        newdata=dd,
+                                        newparams=list(theta=1,beta=c(0,2),sigma=1))[[1]])
+ 
+     fm3 <- glmer(y~x+(1|f)+offset(o),
+                  data=dd,family="poisson")
+ 
+     fm4 <- lmer(y2~x+(1|f)+offset(o),
+                 data=dd)
+ 
+     mySumm2 <- function(fit) return(c(fixef(fit),getME(fit,'theta')))
+     ## still some issues to fix here
+     bb <- bootMer(fm3,mySumm2,nsim=10)
+     attr(bb,"boot.fail.msgs")
+     bb2 <- bootMer(fm4,mySumm2,nsim=10)
+ 
+ } ## skip on windows (for speed)
> 
> proc.time()
   user  system elapsed 
   0.12    0.03    0.14