.dunif.exp: no visible global function definition for ‘dunif’
.dunif.exp: no visible global function definition for ‘dexp’
.logpost: no visible global function definition for ‘dnorm’
.pt2: no visible global function definition for ‘pbeta’
.qt2: no visible global function definition for ‘qbeta’
.rlogis2: no visible global function definition for ‘runif’
.rt2: no visible global function definition for ‘runif’
.tbs.survreg: no visible global function definition for ‘model.frame’
.tbs.survreg: no visible global function definition for ‘model.matrix’
.tbs.survreg: no visible global function definition for
  ‘model.response’
.tbs.survreg: no visible global function definition for ‘runif’
.tbs.survreg: no visible global function definition for ‘optim’
dist.error : <anonymous>: no visible global function definition for
  ‘dnorm’
dist.error : <anonymous>: no visible global function definition for
  ‘pnorm’
dist.error : <anonymous>: no visible global function definition for
  ‘qnorm’
dist.error : <anonymous>: no visible global function definition for
  ‘rnorm’
dist.error : <anonymous>: no visible global function definition for
  ‘dcauchy’
dist.error : <anonymous>: no visible global function definition for
  ‘pcauchy’
dist.error : <anonymous>: no visible global function definition for
  ‘qcauchy’
dist.error : <anonymous>: no visible global function definition for
  ‘rcauchy’
dist.error : <anonymous>: no visible global function definition for
  ‘dlogis’
dist.error : <anonymous>: no visible global function definition for
  ‘plogis’
dist.error : <anonymous>: no visible global function definition for
  ‘qlogis’
dist.error : <anonymous>: no visible global function definition for
  ‘rlogis’
lines.tbs.survreg.be: no visible global function definition for ‘lines’
lines.tbs.survreg.be: no visible binding for global variable ‘quantile’
lines.tbs.survreg.mle: no visible global function definition for
  ‘lines’
plot.tbs.survreg.be: no visible global function definition for ‘plot’
plot.tbs.survreg.be: no visible binding for global variable ‘quantile’
plot.tbs.survreg.be: no visible global function definition for ‘lines’
plot.tbs.survreg.be: no visible global function definition for ‘hist’
plot.tbs.survreg.be: no visible global function definition for ‘par’
plot.tbs.survreg.be: no visible global function definition for ‘acf’
plot.tbs.survreg.be: no visible global function definition for ‘ts’
plot.tbs.survreg.mle: no visible global function definition for ‘plot’
plot.tbs.survreg.mle: no visible global function definition for ‘lines’
plot.tbs.survreg.mle: no visible global function definition for ‘hist’
plot.tbs.survreg.mle: no visible global function definition for
  ‘qqplot’
plot.tbs.survreg.mle: no visible global function definition for
  ‘ppoints’
plot.tbs.survreg.mle: no visible global function definition for
  ‘qqline’
summary.tbs.survreg.mle: no visible global function definition for
  ‘pnorm’
tbs.survreg.be: no visible global function definition for ‘model.frame’
tbs.survreg.be: no visible global function definition for
  ‘model.matrix’
tbs.survreg.be: no visible global function definition for
  ‘model.response’
tbs.survreg.be: no visible global function definition for ‘sd’
tbs.survreg.be: no visible binding for global variable ‘sd’
Undefined global functions or variables:
  acf dcauchy dexp dlogis dnorm dunif hist lines model.frame
  model.matrix model.response optim par pbeta pcauchy plogis plot pnorm
  ppoints qbeta qcauchy qlogis qnorm qqline qqplot quantile rcauchy
  rlogis rnorm runif sd ts
Consider adding
  importFrom("graphics", "hist", "lines", "par", "plot")
  importFrom("stats", "acf", "dcauchy", "dexp", "dlogis", "dnorm",
             "dunif", "model.frame", "model.matrix", "model.response",
             "optim", "pbeta", "pcauchy", "plogis", "pnorm", "ppoints",
             "qbeta", "qcauchy", "qlogis", "qnorm", "qqline", "qqplot",
             "quantile", "rcauchy", "rlogis", "rnorm", "runif", "sd",
             "ts")
to your NAMESPACE file.