fight with tic

.travis.yml

@@ -3,7 +3,11 @@
 # Usually you shouldn't need to change the first part of the file
 
 # DO NOT CHANGE THE CODE BELOW
-before_install: R -q -e 'install.packages(c("remotes", "curl")); remotes::install_github("ropenscilabs/tic"); tic::prepare_all_stages(); tic::before_install()'
+before_install:
+ - R -q -e 'install.packages(c("remotes", "curl"))'
+ - R -q -e 'remotes::install_github("ropenscilabs/tic")'
+ - R -q -e 'tic::prepare_all_stages()'
+ - R -q -e 'tic::before_install()'
 install: R -q -e 'tic::install()'
 after_install: R -q -e 'tic::after_install()'
 before_script: R -q -e 'tic::before_script()'
@@ -25,7 +29,7 @@ after_script: R -q -e 'tic::after_script()'
 # Header
 language: r
 sudo: false
-dist: trusty
+dist: xenial
 cache: packages
 latex: false
 
@@ -43,7 +47,6 @@ addons:
 #env
 env:
   global:
-  - _R_CHECK_FORCE_SUGGESTS_=false
   - MAKEFLAGS="-j 2"
 
 #services