It takes a few minutes for my underpowered laptop to compile all études, so I've uploaded the compiled PDFs here.

I've tried to make these compile with as few warnings possible. However, there are some warnings for a few, mostly related to over-full pages:

make -B 13.pdf 15.pdf 16.pdf 17.pdf 20.pdf 2>&1

lilypond 13.ly
Processing `13.ly'
Parsing...
Interpreting music...[8][16][24][32][40][48][56][64][72]
13.ly:321:3: warning: No tremolo to end

  \repeat tremolo 6 { ds32_2 b_\thumb } |
[80]
Preprocessing graphical objects...
Interpreting music...
MIDI output to `13.midi'...
Finding the ideal number of pages...
Fitting music on 1 or 2 pages...
Drawing systems...
warning: compressing over-full page by 3.6 staff-spaces
warning: page 2 has been compressed
Layout output to `/tmp/lilypond-U1ighU'...
Converting to `13.pdf'...
Deleting `/tmp/lilypond-U1ighU'...
Success: compilation successfully completed
lilypond 15.ly
Processing `15.ly'
Parsing...
Interpreting music...[8][16][24][32][40][48][56][64][72][80][88][96][104][112][120][128]
Preprocessing graphical objects...
Interpreting music...
MIDI output to `15.midi'...
Finding the ideal number of pages...
Fitting music on 1 or 2 pages...
Drawing systems...
warning: compressing over-full page by 15.5 staff-spaces
warning: page 2 has been compressed
Layout output to `/tmp/lilypond-U7Ljfq'...
Converting to `15.pdf'...
Deleting `/tmp/lilypond-U7Ljfq'...
Success: compilation successfully completed
lilypond 16.ly
Processing `16.ly'
Parsing...
Interpreting music...[8][16][24][32][40][48][56][64]
Preprocessing graphical objects...
Interpreting music...
MIDI output to `16.midi'...
Finding the ideal number of pages...
Fitting music on 1 or 2 pages...
Drawing systems...
warning: compressing over-full page by 2.7 staff-spaces
warning: page 2 has been compressed
Layout output to `/tmp/lilypond-V5qFvy'...
Converting to `16.pdf'...
Deleting `/tmp/lilypond-V5qFvy'...
Success: compilation successfully completed
lilypond 17.ly
Processing `17.ly'
Parsing...
Interpreting music...[8][16][24]
Preprocessing graphical objects...
Interpreting music...
MIDI output to `17.midi'...
Finding the ideal number of pages...
Fitting music on 1 page...
Drawing systems...
warning: compressing over-full page by 16.3 staff-spaces
warning: page 1 has been compressed
Layout output to `/tmp/lilypond-UzH8fK'...
Converting to `17.pdf'...
Deleting `/tmp/lilypond-UzH8fK'...
Success: compilation successfully completed
lilypond 20.ly
Processing `20.ly'
Parsing...
Interpreting music...[8][16][24][32]
20.ly:160:19: warning: barcheck failed at: 1/2
    a16( d_2 fs,) 
		  |
[40]
Preprocessing graphical objects...
Interpreting music...
20.ly:160:19: warning: barcheck failed at: 1/2
    a16( d_2 fs,) 
		  |
MIDI output to `20.midi'...
Finding the ideal number of pages...
Fitting music on 1 or 2 pages...
Drawing systems...
Layout output to `/tmp/lilypond-BKviOk'...
Converting to `20.pdf'...
Deleting `/tmp/lilypond-BKviOk'...
Success: compilation successfully completed