[DRE-maint] Bug#892189: ruby-mini-magick: FTBFS and Debci failure with imagemagick 8:6.9.9.34+dfsg-3

[Adrian Bunk]

Source: ruby-mini-magick
Version: 4.8.0-1
Severity: serious

https://ci.debian.net/packages/r/ruby-mini-magick/unstable/amd64/
https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/ruby-mini-magick.html

...

Failures:

  1) With ImageMagick MiniMagick::Image#data when the data return is an array (ex png) returns image JSON data
     Failure/Error: data = JSON.parse(json)

     JSON::ParserError:
       416: unexpected token at '{
         "image": {
           "name": "spec/fixtures/engine.png[0]",
           "format": "PNG",
           "formatDescription": "Portable Network Graphics",
           "mimeType": "image/png",
           "class": "DirectClass",
           "geometry": {
             "width": 300,
             "height": 225,
             "x": 0,
             "y": 0
           },
           "resolution": {
             "x": 72,
             "y": 72
           },
           "printSize": {
             "x": 4.16667,
             "y": 3.125
           },
           "units": "Undefined",
           "type": "TrueColorAlpha",
           "endianess": "Undefined",
           "colorspace": "sRGB",
           "depth": 8,
           "baseDepth": 8,
           "channelDepth": {
             "alpha": 1,
             "red": 8,
             "green": 8,
             "blue": 8
           },
           "pixels": 67500,
           "imageStatistics": {
             "all": {
               "min": 6,
               "max": 255,
               "mean": 143.743,
               "standardDeviation": 42.8404,
               "kurtosis": -1.54497,
               "skewness": 0.345865,
               "entropy": -nan
             }
           },
           "channelStatistics": {
             "alpha": {
               "min": 0,
               "max": 0,
               "mean": 0,
               "standardDeviation": 0,
               "kurtosis": 1.6384e+64,
               "skewness": 9.375e+44,
               "entropy": -nan
             },
             "red": {
               "min": 6,
               "max": 255,
               "mean": 106.28,
               "standardDeviation": 57.799,
               "kurtosis": 0.0805948,
               "skewness": 1.04772,
               "entropy": 0.933194
             },
             "green": {
               "min": 13,
               "max": 255,
               "mean": 104.804,
               "standardDeviation": 57.6727,
               "kurtosis": 0.217234,
               "skewness": 1.11467,
               "entropy": 0.932031
             },
             "blue": {
               "min": 13,
               "max": 255,
               "mean": 108.887,
               "standardDeviation": 55.8899,
               "kurtosis": 0.233094,
               "skewness": 1.0827,
               "entropy": 0.937992
             }
           },
           "renderingIntent": "Perceptual",
           "gamma": 0.45455,
           "chromaticity": {
             "redPrimary": {
               "x": 0.64,
               "y": 0.33
             },
             "greenPrimary": {
               "x": 0.3,
               "y": 0.6
             },
             "bluePrimary": {
               "x": 0.15,
               "y": 0.06
             },
             "whitePrimary": {
               "x": 0.3127,
               "y": 0.329
             }
           },
           "backgroundColor": "#FFFFFFFF",
           "borderColor": "#DFDFDFFF",
           "matteColor": "#BDBDBDFF",
           "transparentColor": "#00000000",
           "interlace": "None",
           "intensity": "Undefined",
           "compose": "Over",
           "pageGeometry": {
             "width": 300,
             "height": 225,
             "x": 0,
             "y": 0
           },
           "dispose": "Undefined",
           "iterations": 0,
           "compression": "Zip",
           "orientation": "Undefined",
           "properties": {
             "comment": "File source: http://commons.wikimedia.org/wiki/File:Valve_original_(1).PNG",
             "date:create": "2019-04-07T12:21:15-12:00",
             "date:modify": "2017-07-05T21:50:52-12:00",
             "png:bKGD": "chunk was found (see Background color, above)",
             "png:cHRM": "chunk was found (see Chromaticity, above)",
             "png:gAMA": "gamma=0.45455 (See Gamma, above)",
             "png:IHDR.bit-depth-orig": "8",
             "png:IHDR.bit_depth": "8",
             "png:IHDR.color-type-orig": "6",
             "png:IHDR.color_type": "6 (RGBA)",
             "png:IHDR.interlace_method": "0 (Not interlaced)",
             "png:IHDR.width,height": "300, 225",
             "png:pHYs": "x_res=72, y_res=72, units=0",
             "png:sRGB": "intent=0 (Perceptual Intent)",
             "png:text": "11 tEXt/zTXt/iTXt chunks were found",
             "signature": "daa0f28510f957e9fe3a6b1f996050b8531977e2b4e2e5f06886d1a467731408",
             "software": "ImageMagick 6.6.2-6 2011-03-09 Q8 http://www.imagemagick.org",
             "Thumb::Document::Pages": "1",
             "Thumb::Image::height": "480",
             "Thumb::Image::Width": "640",
             "Thumb::Mimetype": "image/png",
             "Thumb::MTime": "1350427061",
             "Thumb::Size": "661KB",
             "Thumb::URI": "file:///tmp/localcopy_66ee7dc674fa-1.png"
           },
           "artifacts": {
             "filename": "spec/fixtures/engine.png[0]"
           },
           "tainted": false,
           "filesize": "0B",
           "numberPixels": "67500",
           "pixelsPerSecond": "2250000B",
           "userTime": "0.010u",
           "elapsedTime": "0:01.030",
           "version": "ImageMagick 6.9.9-34 Q16 x86_64 20180122 http://www.imagemagick.org"
         }
       }
       ]'
     # ./lib/mini_magick/image/info.rb:163:in `data'
     # ./lib/mini_magick/image/info.rb:33:in `[]'
     # ./lib/mini_magick/image.rb:132:in `block in attribute'
     # ./spec/lib/mini_magick/image_spec.rb:475:in `block (6 levels) in <top (required)>'
     # ./spec/spec_helper.rb:20:in `block (3 levels) in <top (required)>'

Finished in 18.8 seconds (files took 5.88 seconds to load)
73 examples, 1 failure

Failed examples:

rspec ./spec/lib/mini_magick/image_spec.rb[1:1:20:2:1] # With ImageMagick MiniMagick::Image#data when the data return is an array (ex png) returns image JSON data

/usr/bin/ruby2.5 /usr/bin/rspec --pattern ./spec/\*\*/\*_spec.rb failed
ERROR: Test "ruby2.5" failed. Exiting.
dh_auto_install: dh_ruby --install /build/1st/ruby-mini-magick-4.8.0/debian/ruby-mini-magick returned exit code 1
make[1]: *** [debian/rules:9: override_dh_auto_install] Error 1