UCB Gradle error with Facebook SDK

UCB build fails when using Facebook SDK and Gradle. The same project builds totally fine locally.

Unity version: Latest 2017.x

Here's the log output:

Code (CSharp):

1. 3366: [Unity] DisplayProgressbar: Building Gradle project
2. 3367: [Unity] Cancelling DisplayDialog: Build failure Job failed, see logs for details See the Console for details.
3. 3368: [Unity] This should not be called in batch mode.
4. 3369: [Unity] UnityEditor.EditorUtility:DisplayDialog(String, String, String, String)
5. 3370: [Unity] UnityEditor.Android.PostProcessor.CancelPostProcess:AbortBuild(String, String, Exception)
6. 3371: [Unity] UnityEditor.Android.PostProcessor.PostProcessRunner:RunAllTasks(PostProcessorContext)
7. 3372: [Unity] UnityEditor.Android.PostProcessAndroidPlayer:PostProcess(BuildTarget, String, String, String, String, String, String, BuildOptions, RuntimeClassRegistry, BuildReport)
8. 3373: [Unity] UnityEditor.Android.AndroidBuildPostprocessor:PostProcess(BuildPostProcessArgs)
9. 3374: [Unity] UnityEditor.BuildPipeline:BuildPlayerInternalNoCheck(String[], String, String, BuildTargetGroup, BuildTarget, BuildOptions, Boolean)
10. 3375: [Unity] UnityEditor.CloudBuild.Builder:Build()
11. 3376: [Unity] CommandInvokationFailure: Gradle build failed.
12. 3377: [Unity] /BUILD_PATH/jdk1.8.0_121.jdk/Contents/Home/bin/java -classpath "/UNITY_PATH/Unity/Unity-2017_3_1f1/PlaybackEngines/AndroidPlayer/Tools/gradle/lib/gradle-launcher-4.0.1.jar" org.gradle.launcher.GradleMain "-Dorg.gradle.jvmargs=-Xmx2048m" "assembleRelease"
13. 3378: [Unity] stderr[
14. 3379: [Unity] Note: there were 11 duplicate class definitions.
15. 3380: [Unity]       (http://proguard.sourceforge.net/manual/troubleshooting.html#duplicateclass)
16. 3381: [Unity] Warning: com.facebook.devicerequests.internal.DeviceRequestsHelper: can't find referenced class com.google.zxing.EncodeHintType
17. 3382: [Unity] Warning: com.facebook.devicerequests.internal.DeviceRequestsHelper: can't find referenced class com.google.zxing.EncodeHintType
18. 3383: [Unity] Warning: com.facebook.devicerequests.internal.DeviceRequestsHelper: can't find referenced class com.google.zxing.MultiFormatWriter
19. 3384: [Unity] Warning: com.facebook.devicerequests.internal.DeviceRequestsHelper: can't find referenced class com.google.zxing.MultiFormatWriter
20. 3385: [Unity] Warning: com.facebook.devicerequests.internal.DeviceRequestsHelper: can't find referenced class com.google.zxing.BarcodeFormat
21. 3386: [Unity] Warning: com.facebook.devicerequests.internal.DeviceRequestsHelper: can't find referenced class com.google.zxing.MultiFormatWriter
22. 3387: [Unity] Warning: com.facebook.devicerequests.internal.DeviceRequestsHelper: can't find referenced class com.google.zxing.common.BitMatrix
23. 3388: [Unity] Warning: com.facebook.devicerequests.internal.DeviceRequestsHelper: can't find referenced class com.google.zxing.common.BitMatrix
24. 3389: [Unity] Warning: com.facebook.devicerequests.internal.DeviceRequestsHelper: can't find referenced class com.google.zxing.common.BitMatrix
25. 3390: [Unity] Warning: com.facebook.devicerequests.internal.DeviceRequestsHelper: can't find referenced class com.google.zxing.WriterException
26. 3391: [Unity] Warning: com.facebook.devicerequests.internal.DeviceRequestsHelper: can't find referenced class com.google.zxing.common.BitMatrix
27. 3392: [Unity] Warning: com.facebook.devicerequests.internal.DeviceRequestsHelper: can't find referenced class com.google.zxing.WriterException
28. 3393: [Unity] Warning: com.facebook.devicerequests.internal.DeviceRequestsHelper: can't find referenced class com.google.zxing.BarcodeFormat
29. 3394: [Unity] Warning: com.facebook.devicerequests.internal.DeviceRequestsHelper: can't find referenced class com.google.zxing.common.BitMatrix
30. 3395: [Unity] Warning: com.facebook.devicerequests.internal.DeviceRequestsHelper: can't find referenced class com.google.zxing.common.BitMatrix
31. 3396: [Unity] Warning: com.facebook.devicerequests.internal.DeviceRequestsHelper: can't find referenced class com.google.zxing.EncodeHintType
32. 3397: [Unity] Warning: there were 16 unresolved references to classes or interfaces.
33. 3398: [Unity]          You may need to add missing library jars or update their versions.
34. 3399: [Unity]          If your code works fine without the missing classes, you can suppress
35. 3400: [Unity]          the warnings with '-dontwarn' options.
36. 3401: [Unity]          (http://proguard.sourceforge.net/manual/troubleshooting.html#unresolvedclass)
37. 3402: [Unity] FAILURE: Build failed with an exception.
38. 3403: [Unity] * What went wrong:
39. 3404: [Unity] Execution failed for task ':transformClassesAndResourcesWithProguardForRelease'.
40. 3405: [Unity] > Job failed, see logs for details
41. 3406: [Unity] * Try:
42. 3407: [Unity] Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
43. 3408: [Unity] BUILD FAILED in 1m 34s
44. 3409: [Unity] ]
45. 3410: [Unity] stdout[
46. 3411: [Unity] Starting a Gradle Daemon (subsequent builds will be faster)
47. 3412: [Unity] Download https://jcenter.bintray.com/com/android/tools/build/gradle/2.3.0/gradle-2.3.0.pom
48. 3413: [Unity] Download https://jcenter.bintray.com/com/android/tools/build/gradle-core/2.3.0/gradle-core-2.3.0.pom
49. 3414: [Unity] Download https://jcenter.bintray.com/com/android/tools/build/transform-api/2.0.0-deprecated-use-gradle-api/transform-api-2.0.0-deprecated-use-gradle-api.pom
50. 3415: [Unity] Download https://jcenter.bintray.com/com/android/tools/lint/lint/25.3.0/lint-25.3.0.pom
51. 3416: [Unity] Download https://jcenter.bintray.com/com/android/tools/build/builder/2.3.0/builder-2.3.0.pom
52. 3417: [Unity] Download https://jcenter.bintray.com/com/android/tools/build/gradle-api/2.3.0/gradle-api-2.3.0.pom
53. 3418: [Unity] Download https://jcenter.bintray.com/com/android/databinding/compilerCommon/2.3.0/compilerCommon-2.3.0.pom
54. 3419: [Unity] Download https://jcenter.bintray.com/org/ow2/asm/asm/5.0.4/asm-5.0.4.pom
55. 3420: [Unity] Download https://jcenter.bintray.com/org/ow2/asm/asm-commons/5.0.4/asm-commons-5.0.4.pom
56. 3421: [Unity] Download https://jcenter.bintray.com/org/ow2/asm/asm-parent/5.0.4/asm-parent-5.0.4.pom
57. 3422: [Unity] Download https://jcenter.bintray.com/net/sf/proguard/proguard-gradle/5.3.2/proguard-gradle-5.3.2.pom
58. 3423: [Unity] Download https://jcenter.bintray.com/org/ow2/ow2/1.3/ow2-1.3.pom
59. 3424: [Unity] Download https://jcenter.bintray.com/net/sf/proguard/proguard-parent/5.3.2/proguard-parent-5.3.2.pom
60. 3425: [Unity] Download https://jcenter.bintray.com/org/jacoco/org.jacoco.report/0.7.5.201505241946/org.jacoco.report-0.7.5.201505241946.pom
61. 3426: [Unity] Download https://jcenter.bintray.com/org/jacoco/org.jacoco.core/0.7.5.201505241946/org.jacoco.core-0.7.5.201505241946.pom
62. 3427: [Unity] Download https://jcenter.bintray.com/net/sf/jopt-simple/jopt-simple/4.9/jopt-simple-4.9.pom
63. 3428: [Unity] Download https://jcenter.bintray.com/org/jacoco/org.jacoco.build/0.7.5.201505241946/org.jacoco.build-0.7.5.201505241946.pom
64. 3429: [Unity] Download https://jcenter.bintray.com/org/sonatype/oss/oss-parent/7/oss-parent-7.pom
65. 3430: [Unity] Download https://jcenter.bintray.com/com/google/protobuf/protobuf-java/3.0.0/protobuf-java-3.0.0.pom
66. 3431: [Unity] Download https://jcenter.bintray.com/com/google/protobuf/protobuf-parent/3.0.0/protobuf-parent-3.0.0.pom
67. 3432: [Unity] Download https://jcenter.bintray.com/com/google/google/1/google-1.pom
68. 3433: [Unity] Download https://jcenter.bintray.com/org/antlr/antlr/3.5.2/antlr-3.5.2.pom
69. 3434: [Unity] Download https://jcenter.bintray.com/org/antlr/antlr-master/3.5.2/antlr-master-3.5.2.pom
70. 3435: [Unity] Download https://jcenter.bintray.com/org/sonatype/oss/oss-parent/9/oss-parent-9.pom
71. 3436: [Unity] Download https://jcenter.bintray.com/com/android/tools/build/builder-test-api/2.3.0/builder-test-api-2.3.0.pom
72. 3437: [Unity] Download https://jcenter.bintray.com/com/android/tools/build/builder-model/2.3.0/builder-model-2.3.0.pom
73. 3438: [Unity] Download https://jcenter.bintray.com/com/android/tools/sdklib/25.3.0/sdklib-25.3.0.pom
74. 3439: [Unity] Download https://jcenter.bintray.com/com/android/tools/common/25.3.0/common-25.3.0.pom
75. 3440: [Unity] Download https://jcenter.bintray.com/com/android/tools/build/manifest-merger/25.3.0/manifest-merger-25.3.0.pom
76. 3441: [Unity] Download https://jcenter.bintray.com/com/android/tools/sdk-common/25.3.0/sdk-common-25.3.0.pom
77. 3442: [Unity] Download https://jcenter.bintray.com/com/android/tools/ddms/ddmlib/25.3.0/ddmlib-25.3.0.pom
78. 3443: [Unity] Download https://jcenter.bintray.com/com/android/tools/jack/jack-api/0.13.0/jack-api-0.13.0.pom
79. 3444: [Unity] Download https://jcenter.bintray.com/com/android/tools/jill/jill-api/0.10.0/jill-api-0.10.0.pom
80. 3445: [Unity] Download https://jcenter.bintray.com/com/android/tools/analytics-library/protos/25.3.0/protos-25.3.0.pom
81. 3446: [Unity] Download https://jcenter.bintray.com/com/android/tools/analytics-library/shared/25.3.0/shared-25.3.0.pom
82. 3447: [Unity] Download https://jcenter.bintray.com/com/android/tools/analytics-library/tracker/25.3.0/tracker-25.3.0.pom
83. 3448: [Unity] Download https://jcenter.bintray.com/com/squareup/javawriter/2.5.0/javawriter-2.5.0.pom
84. 3449: [Unity] Download https://jcenter.bintray.com/org/bouncycastle/bcpkix-jdk15on/1.48/bcpkix-jdk15on-1.48.pom
85. 3450: [Unity] Download https://jcenter.bintray.com/org/bouncycastle/bcprov-jdk15on/1.48/bcprov-jdk15on-1.48.pom
86. 3451: [Unity] Download https://jcenter.bintray.com/org/ow2/asm/asm-tree/5.0.4/asm-tree-5.0.4.pom
87. 3452: [Unity] Download https://jcenter.bintray.com/org/eclipse/jdt/core/compiler/ecj/4.6.1/ecj-4.6.1.pom
88. 3453: [Unity] Download https://jcenter.bintray.com/com/android/tools/lint/lint-checks/25.3.0/lint-checks-25.3.0.pom
89. 3454: [Unity] Download https://jcenter.bintray.com/com/google/guava/guava/18.0/guava-18.0.pom
90. 3455: [Unity] Download https://jcenter.bintray.com/com/google/guava/guava-parent/18.0/guava-parent-18.0.pom
91. 3456: [Unity] Download https://jcenter.bintray.com/com/android/databinding/baseLibrary/2.3.0/baseLibrary-2.3.0.pom
92. 3457: [Unity] Download https://jcenter.bintray.com/commons-io/commons-io/2.4/commons-io-2.4.pom
93. 3458: [Unity] Download https://jcenter.bintray.com/org/antlr/antlr4/4.5.3/antlr4-4.5.3.pom
94. 3459: [Unity] Download https://jcenter.bintray.com/com/googlecode/juniversalchardet/juniversalchardet/1.0.3/juniversalchardet-1.0.3.pom
95. 3460: [Unity] Download https://jcenter.bintray.com/org/antlr/antlr4-master/4.5.3/antlr4-master-4.5.3.pom
96. 3461: [Unity] Download https://jcenter.bintray.com/org/apache/commons/commons-parent/25/commons-parent-25.pom
97. 3462: [Unity] Download https://jcenter.bintray.com/org/apache/apache/9/apache-9.pom
98. 3463: [Unity] Download https://jcenter.bintray.com/com/android/tools/annotations/24.5.0/annotations-24.5.0.pom
99. 3464: [Unity] Download https://jcenter.bintray.com/net/sf/proguard/proguard-base/5.3.2/proguard-base-5.3.2.pom
100. 3465: [Unity] Download https://jcenter.bintray.com/org/ow2/asm/asm-debug-all/5.0.1/asm-debug-all-5.0.1.pom
101. 3466: [Unity] Download https://jcenter.bintray.com/org/ow2/asm/asm-parent/5.0.1/asm-parent-5.0.1.pom
102. 3467: [Unity] Download https://jcenter.bintray.com/org/antlr/ST4/4.0.8/ST4-4.0.8.pom
103. 3468: [Unity] Download https://jcenter.bintray.com/org/antlr/antlr-runtime/3.5.2/antlr-runtime-3.5.2.pom
104. 3469: [Unity] Download https://jcenter.bintray.com/com/android/tools/repository/25.3.0/repository-25.3.0.pom
105. 3470: [Unity] Download https://jcenter.bintray.com/com/google/code/gson/gson/2.2.4/gson-2.2.4.pom
106. 3471: [Unity] Download https://jcenter.bintray.com/com/android/tools/dvlib/25.3.0/dvlib-25.3.0.pom
107. 3472: [Unity] Download https://jcenter.bintray.com/com/android/tools/layoutlib/layoutlib-api/25.3.0/layoutlib-api-25.3.0.pom
108. 3473: [Unity] Download https://jcenter.bintray.com/org/apache/commons/commons-compress/1.8.1/commons-compress-1.8.1.pom
109. 3474: [Unity] Download https://jcenter.bintray.com/org/apache/httpcomponents/httpmime/4.1/httpmime-4.1.pom
110. 3475: [Unity] Download https://jcenter.bintray.com/org/apache/httpcomponents/httpclient/4.1.1/httpclient-4.1.1.pom
111. 3476: [Unity] Download https://jcenter.bintray.com/org/apache/commons/commons-parent/33/commons-parent-33.pom
112. 3477: [Unity] Download https://jcenter.bintray.com/org/apache/apache/13/apache-13.pom
113. 3478: [Unity] Download https://jcenter.bintray.com/org/apache/httpcomponents/httpcomponents-client/4.1.1/httpcomponents-client-4.1.1.pom
114. 3479: [Unity] Download https://jcenter.bintray.com/org/apache/httpcomponents/project/4.1.1/project-4.1.1.pom
115. 3480: [Unity] Download https://jcenter.bintray.com/org/apache/httpcomponents/httpcomponents-client/4.1/httpcomponents-client-4.1.pom
116. 3481: [Unity] Download https://jcenter.bintray.com/net/sf/kxml/kxml2/2.3.0/kxml2-2.3.0.pom
117. 3482: [Unity] Download https://jcenter.bintray.com/org/ow2/asm/asm-analysis/5.0.4/asm-analysis-5.0.4.pom
118. 3483: [Unity] Download https://jcenter.bintray.com/com/android/tools/lint/lint-api/25.3.0/lint-api-25.3.0.pom
119. 3484: [Unity] Download https://jcenter.bintray.com/com/intellij/annotations/12.0/annotations-12.0.pom
120. 3485: [Unity] Download https://jcenter.bintray.com/com/google/jimfs/jimfs/1.1/jimfs-1.1.pom
121. 3486: [Unity] Download https://jcenter.bintray.com/com/google/jimfs/jimfs-parent/1.1/jimfs-parent-1.1.pom
122. 3487: [Unity] Download https://jcenter.bintray.com/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1.pom
123. 3488: [Unity] Download https://jcenter.bintray.com/org/apache/httpcomponents/httpcore/4.1/httpcore-4.1.pom
124. 3489: [Unity] Download https://jcenter.bintray.com/commons-codec/commons-codec/1.4/commons-codec-1.4.pom
125. 3490: [Unity] Download https://jcenter.bintray.com/org/apache/commons/commons-parent/11/commons-parent-11.pom
126. 3491: [Unity] Download https://jcenter.bintray.com/org/apache/apache/4/apache-4.pom
127. 3492: [Unity] Download https://jcenter.bintray.com/org/apache/httpcomponents/httpcomponents-core/4.1/httpcomponents-core-4.1.pom
128. 3493: [Unity] Download https://jcenter.bintray.com/org/apache/commons/commons-parent/5/commons-parent-5.pom
129. 3494: [Unity] Download https://jcenter.bintray.com/com/android/tools/external/lombok/lombok-ast/0.2.3/lombok-ast-0.2.3.pom
130. 3495: [Unity] Download https://jcenter.bintray.com/com/android/tools/external/com-intellij/uast/162.2228.14/uast-162.2228.14.pom
131. 3496: [Unity] Download https://jcenter.bintray.com/com/android/tools/annotations/25.3.0/annotations-25.3.0.pom
132. 3497: [Unity] Download https://jcenter.bintray.com/com/android/tools/build/gradle/2.3.0/gradle-2.3.0.jar
133. 3498: [Unity] Download https://jcenter.bintray.com/com/android/tools/build/gradle-core/2.3.0/gradle-core-2.3.0.jar
134. 3499: [Unity] Download https://jcenter.bintray.com/com/android/tools/lint/lint/25.3.0/lint-25.3.0.jar
135. 3500: [Unity] Download https://jcenter.bintray.com/com/android/tools/build/builder/2.3.0/builder-2.3.0.jar
136. 3501: [Unity] Download https://jcenter.bintray.com/com/android/tools/build/transform-api/2.0.0-deprecated-use-gradle-api/transform-api-2.0.0-deprecated-use-gradle-api.jar
137. 3502: [Unity] Download https://jcenter.bintray.com/com/android/tools/build/gradle-api/2.3.0/gradle-api-2.3.0.jar
138. 3503: [Unity] Download https://jcenter.bintray.com/com/android/databinding/compilerCommon/2.3.0/compilerCommon-2.3.0.jar
139. 3504: [Unity] Download https://jcenter.bintray.com/org/ow2/asm/asm-commons/5.0.4/asm-commons-5.0.4.jar
140. 3505: [Unity] Download https://jcenter.bintray.com/com/android/tools/lint/lint-checks/25.3.0/lint-checks-25.3.0.jar
141. 3506: [Unity] Download https://jcenter.bintray.com/com/android/tools/lint/lint-api/25.3.0/lint-api-25.3.0.jar
142. 3507: [Unity] Download https://jcenter.bintray.com/org/ow2/asm/asm-analysis/5.0.4/asm-analysis-5.0.4.jar
143. 3508: [Unity] Download https://jcenter.bintray.com/org/ow2/asm/asm-tree/5.0.4/asm-tree-5.0.4.jar
144. 3509: [Unity] Download https://jcenter.bintray.com/org/ow2/asm/asm/5.0.4/asm-5.0.4.jar
145. 3510: [Unity] Download https://jcenter.bintray.com/net/sf/proguard/proguard-gradle/5.3.2/proguard-gradle-5.3.2.jar
146. 3511: [Unity] Download https://jcenter.bintray.com/org/jacoco/org.jacoco.report/0.7.5.201505241946/org.jacoco.report-0.7.5.201505241946.jar
147. 3512: [Unity] Download https://jcenter.bintray.com/net/sf/jopt-simple/jopt-simple/4.9/jopt-simple-4.9.jar
148. 3513: [Unity] Download https://jcenter.bintray.com/org/jacoco/org.jacoco.core/0.7.5.201505241946/org.jacoco.core-0.7.5.201505241946.jar
149. 3514: [Unity] Download https://jcenter.bintray.com/com/android/tools/analytics-library/tracker/25.3.0/tracker-25.3.0.jar
150. 3515: [Unity] Download https://jcenter.bintray.com/com/android/tools/analytics-library/shared/25.3.0/shared-25.3.0.jar
151. 3516: [Unity] Download https://jcenter.bintray.com/com/google/protobuf/protobuf-java/3.0.0/protobuf-java-3.0.0.jar
152. 3517: [Unity] Download https://jcenter.bintray.com/com/android/tools/analytics-library/protos/25.3.0/protos-25.3.0.jar
153. 3518: [Unity] Download https://jcenter.bintray.com/org/antlr/antlr/3.5.2/antlr-3.5.2.jar
154. 3519: [Unity] Download https://jcenter.bintray.com/com/android/tools/build/manifest-merger/25.3.0/manifest-merger-25.3.0.jar
155. 3520: [Unity] Download https://jcenter.bintray.com/com/android/tools/sdk-common/25.3.0/sdk-common-25.3.0.jar
156. 3521: [Unity] Download https://jcenter.bintray.com/com/android/tools/build/builder-model/2.3.0/builder-model-2.3.0.jar
157. 3522: [Unity] Download https://jcenter.bintray.com/com/android/tools/sdklib/25.3.0/sdklib-25.3.0.jar
158. 3523: [Unity] Download https://jcenter.bintray.com/com/android/tools/build/builder-test-api/2.3.0/builder-test-api-2.3.0.jar
159. 3524: [Unity] Download https://jcenter.bintray.com/com/android/tools/layoutlib/layoutlib-api/25.3.0/layoutlib-api-25.3.0.jar
160. 3525: [Unity] Download https://jcenter.bintray.com/com/android/tools/ddms/ddmlib/25.3.0/ddmlib-25.3.0.jar
161. 3526: [Unity] Download https://jcenter.bintray.com/com/android/tools/dvlib/25.3.0/dvlib-25.3.0.jar
162. 3527: [Unity] Download https://jcenter.bintray.com/com/android/tools/repository/25.3.0/repository-25.3.0.jar
163. 3528: [Unity] Download https://jcenter.bintray.com/com/android/tools/common/25.3.0/common-25.3.0.jar
164. 3529: [Unity] Download https://jcenter.bintray.com/com/android/tools/jack/jack-api/0.13.0/jack-api-0.13.0.jar
165. 3530: [Unity] Download https://jcenter.bintray.com/com/android/tools/jill/jill-api/0.10.0/jill-api-0.10.0.jar
166. 3531: [Unity] Download https://jcenter.bintray.com/com/squareup/javawriter/2.5.0/javawriter-2.5.0.jar
167. 3532: [Unity] Download https://jcenter.bintray.com/org/bouncycastle/bcpkix-jdk15on/1.48/bcpkix-jdk15on-1.48.jar
168. 3533: [Unity] Download https://jcenter.bintray.com/org/bouncycastle/bcprov-jdk15on/1.48/bcprov-jdk15on-1.48.jar
169. 3534: [Unity] Download https://jcenter.bintray.com/org/eclipse/jdt/core/compiler/ecj/4.6.1/ecj-4.6.1.jar
170. 3535: [Unity] Download https://jcenter.bintray.com/com/google/jimfs/jimfs/1.1/jimfs-1.1.jar
171. 3536: [Unity] Download https://jcenter.bintray.com/com/android/tools/external/lombok/lombok-ast/0.2.3/lombok-ast-0.2.3.jar
172. 3537: [Unity] Download https://jcenter.bintray.com/com/google/guava/guava/18.0/guava-18.0.jar
173. 3538: [Unity] Download https://jcenter.bintray.com/com/android/databinding/baseLibrary/2.3.0/baseLibrary-2.3.0.jar
174. 3539: [Unity] Download https://jcenter.bintray.com/org/antlr/antlr4/4.5.3/antlr4-4.5.3.jar
175. 3540: [Unity] Download https://jcenter.bintray.com/commons-io/commons-io/2.4/commons-io-2.4.jar
176. 3541: [Unity] Download https://jcenter.bintray.com/com/googlecode/juniversalchardet/juniversalchardet/1.0.3/juniversalchardet-1.0.3.jar
177. 3542: [Unity] Download https://jcenter.bintray.com/com/android/tools/annotations/25.3.0/annotations-25.3.0.jar
178. 3543: [Unity] Download https://jcenter.bintray.com/org/ow2/asm/asm-debug-all/5.0.1/asm-debug-all-5.0.1.jar
179. 3544: [Unity] Download https://jcenter.bintray.com/net/sf/proguard/proguard-base/5.3.2/proguard-base-5.3.2.jar
180. 3545: [Unity] Download https://jcenter.bintray.com/org/antlr/ST4/4.0.8/ST4-4.0.8.jar
181. 3546: [Unity] Download https://jcenter.bintray.com/org/antlr/antlr-runtime/3.5.2/antlr-runtime-3.5.2.jar
182. 3547: [Unity] Download https://jcenter.bintray.com/com/google/code/gson/gson/2.2.4/gson-2.2.4.jar
183. 3548: [Unity] Download https://jcenter.bintray.com/org/apache/commons/commons-compress/1.8.1/commons-compress-1.8.1.jar
184. 3549: [Unity] Download https://jcenter.bintray.com/org/apache/httpcomponents/httpclient/4.1.1/httpclient-4.1.1.jar
185. 3550: [Unity] Download https://jcenter.bintray.com/org/apache/httpcomponents/httpmime/4.1/httpmime-4.1.jar
186. 3551: [Unity] Download https://jcenter.bintray.com/net/sf/kxml/kxml2/2.3.0/kxml2-2.3.0.jar
187. 3552: [Unity] Download https://jcenter.bintray.com/com/intellij/annotations/12.0/annotations-12.0.jar
188. 3553: [Unity] Download https://jcenter.bintray.com/org/apache/httpcomponents/httpcore/4.1/httpcore-4.1.jar
189. 3554: [Unity] Download https://jcenter.bintray.com/commons-codec/commons-codec/1.4/commons-codec-1.4.jar
190. 3555: [Unity] Download https://jcenter.bintray.com/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1.jar
191. 3556: [Unity] Download https://jcenter.bintray.com/com/android/tools/external/com-intellij/uast/162.2228.14/uast-162.2228.14.jar
192. 'com.android.vending.billing.IInAppBillingService'
193. 3670: [Unity] Note: the configuration refers to the unknown class 'com.android.vending.billing.IInAppBillingService'
194. 3671: [Unity] Note: com.facebook.appevents.AppEventsLogger$3: can't find dynamically referenced class com.facebook.all.All
195. 3672: [Unity] Note: com.google.android.gms.internal.zzedy: can't find dynamically referenced class com.google.protobuf.ExtensionRegistry
196. 3673: [Unity] Note: com.google.android.gms.internal.zzedz: can't find dynamically referenced class com.google.protobuf.Extension
197. 3674: [Unity] Note: com.google.android.gms.internal.zzefr: can't find dynamically referenced class libcore.io.Memory
198. 3675: [Unity] Note: com.google.android.gms.internal.zzefr: can't find dynamically referenced class org.robolectric.Robolectric
199. 3676: [Unity] Note: com.facebook.unity.UnityReflection accesses a field 'currentActivity' dynamically
200. 3677: [Unity]       Maybe this is program field 'com.unity3d.player.UnityPlayer { android.app.Activity currentActivity; }'
201. 3678: [Unity] Note: com.google.android.gms.dynamite.DynamiteModule accesses a declared field 'MODULE_ID' dynamically
202. 3679: [Unity]       Maybe this is program field 'com.google.android.gms.dynamite.descriptors.com.google.android.gms.flags.ModuleDescriptor { java.lang.String MODULE_ID; }'
203. 3680: [Unity] Note: com.google.android.gms.dynamite.DynamiteModule accesses a declared field 'MODULE_VERSION' dynamically
204. 3681: [Unity]       Maybe this is program field 'com.google.android.gms.dynamite.descriptors.com.google.android.gms.flags.ModuleDescriptor { int MODULE_VERSION; }'
205. 3682: [Unity] Note: com.google.android.gms.dynamite.DynamiteModule accesses a declared field 'sClassLoader' dynamically
206. 3683: [Unity]       Maybe this is program field 'com.google.android.gms.dynamite.DynamiteModule$DynamiteLoaderClassLoader { java.lang.ClassLoader sClassLoader; }'
207. 3684: [Unity] Note: the configuration keeps the entry point 'com.facebook.login.widget.LoginButton { void setProperties(com.facebook.login.widget.LoginButton$LoginButtonProperties); }', but not the descriptor class 'com.facebook.login.widget.LoginButton$LoginButtonProperties'
208. 3685: [Unity] Note: the configuration keeps the entry point 'com.facebook.login.widget.LoginButton { void setLoginManager(com.facebook.login.LoginManager); }', but not the descriptor class 'com.facebook.login.LoginManager'
209. 3686: [Unity] Note: the configuration keeps the entry point 'com.facebook.login.widget.ProfilePictureView { void setOnErrorListener(com.facebook.login.widget.ProfilePictureView$OnErrorListener); }', but not the descriptor class 'com.facebook.login.widget.ProfilePictureView$OnErrorListener'
210. 3687: [Unity] Note: the configuration keeps the entry point 'com.facebook.share.widget.DeviceShareButton { void setShareContent(com.facebook.share.model.ShareContent); }', but not the descriptor class 'com.facebook.share.model.ShareContent'
211. 3688: [Unity] Note: the configuration keeps the entry point 'com.facebook.share.widget.LikeView { void setOnErrorListener(com.facebook.share.widget.LikeView$OnErrorListener); }', but not the descriptor class 'com.facebook.share.widget.LikeView$OnErrorListener'
212. 3689: [Unity] Note: the configuration keeps the entry point 'com.facebook.share.widget.ShareButtonBase { void setShareContent(com.facebook.share.model.ShareContent); }', but not the descriptor class 'com.facebook.share.model.ShareContent'
213. 3690: [Unity] Note: the configuration keeps the entry point 'com.google.android.gms.common.api.internal.LifecycleCallback { com.google.android.gms.common.api.internal.zzcg getChimeraLifecycleFragmentImpl(com.google.android.gms.common.api.internal.zzcf); }', but not the descriptor class 'com.google.android.gms.common.api.internal.zzcf'
214. 3691: [Unity] Note: the configuration keeps the entry point 'com.google.android.gms.flags.impl.FlagProviderImpl { void init(com.google.android.gms.dynamic.IObjectWrapper); }', but not the descriptor class 'com.google.android.gms.dynamic.IObjectWrapper'
215. 3692: [Unity] Note: there were 2 references to unknown classes.
216. 3693: [Unity]       You should check your configuration for typos.
217. 3694: [Unity]       (http://proguard.sourceforge.net/manual/troubleshooting.html#unknownclass)
218. 3695: [Unity] Note: there were 8 unkept descriptor classes in kept class members.
219. 3696: [Unity]       You should consider explicitly keeping the mentioned classes
220. 3697: [Unity]       (using '-keep').
221. 3698: [Unity]       (http://proguard.sourceforge.net/manual/troubleshooting.html#descriptorclass)
222. 3699: [Unity] Note: there were 5 unresolved dynamic references to classes or interfaces.
223. 3700: [Unity]       You should check if you need to specify additional program jars.
224. 3701: [Unity]       (http://proguard.sourceforge.net/manual/troubleshooting.html#dynamicalclass)
225. 3702: [Unity] Note: there were 4 accesses to class members by means of introspection.
226. 3703: [Unity]       You should consider explicitly keeping the mentioned class members
227. 3704: [Unity]       (using '-keep' or '-keepclassmembers').
228. 3705: [Unity]       (http://proguard.sourceforge.net/manual/troubleshooting.html#dynamicalclassmember)
229. 3706: [Unity] Warning: Exception while processing task java.io.IOException: Please correct the above warnings first.
230. 3707: [Unity] :transformClassesAndResourcesWithProguardForRelease FAILED
231. 3708: [Unity] 48 actionable tasks: 48 executed
232. 3709: [Unity] ]
233. 3710: [Unity] exit code: 1
234. 3711: [Unity]   at UnityEditor.Android.Command.WaitForProgramToRun (UnityEditor.Utils.Program p, UnityEditor.Android.Command+WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg) [0x0002f] in <388bfc6933e8438da93bcd874bbbeee6>:0
235. 3712: [Unity]   at UnityEditor.Android.Command.Run (System.Diagnostics.ProcessStartInfo psi, UnityEditor.Android.Command+WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg) [0x00015] in <388bfc6933e8438da93bcd874bbbeee6>:0
236. 3713: [Unity]   at UnityEditor.Android.AndroidJavaTools.RunJava (System.String args, System.String workingdir, System.Action`1[T] progress, System.String error) [0x00050] in <388bfc6933e8438da93bcd874bbbeee6>:0
237. 3714: [Unity]   at UnityEditor.Android.GradleWrapper.Run (System.String workingdir, System.String task, System.Action`1[T] progress) [0x00065] in <388bfc6933e8438da93bcd874bbbeee6>:0
238. 3715: [Unity] Rethrow as GradleInvokationException: Gradle build failed
239. 3716: [Unity]   at UnityEditor.Android.PostProcessor.CancelPostProcess.AbortBuild (System.String title, System.String message, System.Exception ex) [0x0000e] in <388bfc6933e8438da93bcd874bbbeee6>:0
240. 3717: [Unity]   at UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context) [0x000ed] in <388bfc6933e8438da93bcd874bbbeee6>:0
241. 3718: [Unity]   at UnityEditor.Android.PostProcessAndroidPlayer.PostProcess (UnityEditor.BuildTarget target, System.String stagingAreaData, System.String stagingArea, System.String playerPackage, System.String installPath, System.String companyName, System.String productName, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.BuildReporting.BuildReport report) [0x00244] in <388bfc6933e8438da93bcd874bbbeee6>:0
242. 3719: [Unity]   at UnityEditor.Android.AndroidBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args) [0x00001] in <388bfc6933e8438da93bcd874bbbeee6>:0
243. 3720: [Unity] UnityEditor.BuildPipeline:BuildPlayerInternalNoCheck(String[], String, String, BuildTargetGroup, BuildTarget, BuildOptions, Boolean)
244. 3721: [Unity] UnityEditor.CloudBuild.Builder:Build()
245. 3722: [Unity] (Filename: <388bfc6933e8438da93bcd874bbbeee6> Line: 0)

 

Adding a custom gradle config file with minify and proguard turned off solved the problem.
I feel like they should be turned off by default for UCB to be consistent with local builds, or there should be a setting in advanced options.

 

There's a setting under Player Settings that allows you to control minification options for Android, but i am not sure what Unity version introduced that, or whether it is actually serialized so that UCB will pick up that option.

 

I had it set to "None" for both Minify and Proguard, so it's either not serialized, or it doesn't work correctly with UCB.