R package installation errors inside parallel make

gistfile1.txt

root@7c782f3c2892:~# cat Makefile
all:
	Rscript -e 'install.packages("getPass", type = "source")'

root@7c782f3c2892:~# make
Rscript -e 'install.packages("getPass", type = "source")'
Installing package into '/usr/local/lib/R/site-library'
(as 'lib' is unspecified)
trying URL 'https://cloud.r-project.org/src/contrib/getPass_0.2-2.tar.gz'
Content type 'application/x-gzip' length 252439 bytes (246 KB)
==================================================
downloaded 246 KB

* installing *source* package 'getPass' ...
** package 'getPass' successfully unpacked and MD5 sums checked
** libs
make[1]: Entering directory '/tmp/RtmpdaoLvU/R.INSTALL2e1a472ebede/getPass/src'
gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG      -fpic  -g -O2 -fdebug-prefix-map=/build/r-base-AitvI6/r-base-3.4.4=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -g  -c getPass_native.c -o getPass_native.o
gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG      -fpic  -g -O2 -fdebug-prefix-map=/build/r-base-AitvI6/r-base-3.4.4=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -g  -c readline_masked.c -o readline_masked.o
g++ -shared -L/usr/lib/R/lib -Wl,-Bsymbolic-functions -Wl,-z,relro -o getPass.so getPass_native.o readline_masked.o -L/usr/lib/R/lib -lR
make[1]: Leaving directory '/tmp/RtmpdaoLvU/R.INSTALL2e1a472ebede/getPass/src'
installing to /usr/local/lib/R/site-library/getPass/libs
** R
** inst
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
** building package indices
** installing vignettes
   'getPass.Rnw' 
** testing if installed package can be loaded
* DONE (getPass)

The downloaded source packages are in
	'/tmp/RtmpG8hgcL/downloaded_packages'
root@7c782f3c2892:~# make -j2
Rscript -e 'install.packages("getPass", type = "source")'
Installing package into '/usr/local/lib/R/site-library'
(as 'lib' is unspecified)
trying URL 'https://cloud.r-project.org/src/contrib/getPass_0.2-2.tar.gz'
Content type 'application/x-gzip' length 252439 bytes (246 KB)
==================================================
downloaded 246 KB

* installing *source* package 'getPass' ...
** package 'getPass' successfully unpacked and MD5 sums checked
** libs
make[1]: Entering directory '/tmp/RtmpiyhZvZ/R.INSTALL2e436a8b454d/getPass/src'
gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG      -fpic  -g -O2 -fdebug-prefix-map=/build/r-base-AitvI6/r-base-3.4.4=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -g  -c getPass_native.c -o getPass_native.o
make[1]: *** read jobs pipe: No such file or directory.  Stop.
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory '/tmp/RtmpiyhZvZ/R.INSTALL2e436a8b454d/getPass/src'
ERROR: compilation failed for package 'getPass'
* removing '/usr/local/lib/R/site-library/getPass'
* restoring previous '/usr/local/lib/R/site-library/getPass'

The downloaded source packages are in
	'/tmp/RtmpVBb9Q3/downloaded_packages'
Warning message:
In install.packages("getPass", type = "source") :
  installation of package 'getPass' had non-zero exit status
root@7c782f3c2892:~# 
root@7c782f3c2892:~# uname -a
Linux 7c782f3c2892 4.9.93-linuxkit-aufs #1 SMP Wed Jun 6 16:55:56 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
root@7c782f3c2892:~# make --version
GNU Make 4.1
Built for x86_64-pc-linux-gnu
Copyright (C) 1988-2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
root@7c782f3c2892:~# Rscript -e 'devtools::session_info()'
Session info ------------------------------------------------------------------
 setting  value                       
 version  R version 3.4.4 (2018-03-15)
 system   x86_64, linux-gnu           
 ui       X11                         
 language (EN)                        
 collate  C                           
 tz       Europe/Amsterdam            
 date     2018-08-20                  

Packages ----------------------------------------------------------------------
 package   * version date       source        
 base      * 3.4.4   2018-04-21 local         
 compiler    3.4.4   2018-04-21 local         
 datasets  * 3.4.4   2018-04-21 local         
 devtools    1.13.6  2018-06-27 CRAN (R 3.4.4)
 digest      0.6.15  2018-01-28 CRAN (R 3.4.4)
 graphics  * 3.4.4   2018-04-21 local         
 grDevices * 3.4.4   2018-04-21 local         
 memoise     1.1.0   2017-04-21 CRAN (R 3.4.4)
 methods     3.4.4   2018-04-21 local         
 stats     * 3.4.4   2018-04-21 local         
 utils     * 3.4.4   2018-04-21 local         
 withr       2.1.2   2018-03-15 CRAN (R 3.4.4)
root@7c782f3c2892:~# 

Long story short: For reasons I don't fully understand, prepending a + character before each Make recipe line that produces an install.packages call seems to usually be sufficient to fix this.

all:
	+ Rscript -e 'install.packages("getPass", type = "source")'