Failure building Emacs [macOS]

[Angelo Graziosi]

Today the build fails:

[...]
In toplevel form:
eshell/esh-var.el:346:1:Warning: Unused lexical variable ‘args’
  ELC      gnus/deuglify.elc
  ELC      gnus/gmm-utils.elc
  ELC      gnus/gnus-agent.elc
  ELC      gnus/gnus-art.elc

In toplevel form:
gnus/deuglify.el:221:1:Error: Searching for program: Is a directory, 
/private/tmp/emacs-master/lib-src/movemail
make[2]: *** [gnus/deuglify.elc] Error 1
make[2]: *** Waiting for unfinished jobs....
[...]

In the build log I find also (which is suspicious...):

[...]
Loading tooltip...
Loading leim/leim-list.el (source)...
Waiting for git...
Error running git rev-parse: (file-error "Searching for program" "Is a 
directory" "git")
Finding pointers to doc strings...
Finding pointers to doc strings...done
Pure-hashed: 15045 strings, 4144 vectors, 39050 conses, 3981 bytecodes, 180 
others
Dumping under the name emacs
[...]

Notice that, to build, I use as source (a few years...)

http://git.savannah.gnu.org/cgit/emacs.git/snapshot/emacs-master.tar.gz

In this case, commit a0c7157a16481b0523ad20cda9115f9435188f73.


Notice that a few day ago (2018-02-01 09:21:39, commit  
100e33979b139c007c45f0fd339a76e5a7ef494a) I was able to build Emacs without any 
issue...