An error occurred during the fetch of repository 'rules_jvm_external++maven+protobuf_maven'

[lruellan]

Hi,

I'm working on a Bazel module that depends on protobuf.
It used to build successfully until today, when I'm getting the following error:

INFO: Repository rules_jvm_external++maven+protobuf_maven instantiated at: 144 | <builtin>: in <toplevel> 145 | Repository rule coursier_fetch defined at: 146 | /builder/home/.cache/bazel/_bazel_ubuntu/eab0d61a99b6696edb3d2aff87b585e8/external/rules_jvm_external+/private/rules/coursier.bzl:1447:33: in <toplevel> 147 | ERROR: /builder/home/.cache/bazel/_bazel_ubuntu/eab0d61a99b6696edb3d2aff87b585e8/external/rules_jvm_external+/private/rules/coursier.bzl:937:13: An error occurred during the fetch of repository 'rules_jvm_external++maven+protobuf_maven': 148 | Traceback (most recent call last): 149 | File "/builder/home/.cache/bazel/_bazel_ubuntu/eab0d61a99b6696edb3d2aff87b585e8/external/rules_jvm_external+/private/rules/coursier.bzl", line 1051, column 38, in _coursier_fetch_impl 150 | dep_tree = make_coursier_dep_tree( 151 | File "/builder/home/.cache/bazel/_bazel_ubuntu/eab0d61a99b6696edb3d2aff87b585e8/external/rules_jvm_external+/private/rules/coursier.bzl", line 937, column 13, in make_coursier_dep_tree 152 | fail("Error while fetching artifact with coursier: " + exec_result.stderr) 153 | Error in fail: Error while fetching artifact with coursier: Error: Could not find or load main class @.builder.home..cache.bazel._bazel_ubuntu.eab0d61a99b6696edb3d2aff87b585e8.external.rules_jvm_external++maven+protobuf_maven.java_argsfile 154 | ERROR: no such package '@@rules_jvm_external++maven+protobuf_maven//': Error while fetching artifact with coursier: Error: Could not find or load main class @.builder.home..cache.bazel._bazel_ubuntu.eab0d61a99b6696edb3d2aff87b585e8.external.rules_jvm_external++maven+protobuf_maven.java_argsfile 155 | ERROR: /builder/home/.cache/bazel/_bazel_ubuntu/eab0d61a99b6696edb3d2aff87b585e8/external/protobuf+/java/util/BUILD.bazel:8:13: @@protobuf+//java/util:util depends on @@rules_jvm_external++maven+protobuf_maven//:com_google_j2objc_j2objc_annotations in repository @@rules_jvm_external++maven+protobuf_maven which failed to fetch. no such package '@@rules_jvm_external++maven+protobuf_maven//': Error while fetching artifact with coursier: Error: Could not find or load main class @.builder.home..cache.bazel._bazel_ubuntu.eab0d61a99b6696edb3d2aff87b585e8.external.rules_jvm_external++maven+protobuf_maven.java_argsfile

I can see that com_google_j2objc_j2objc_annotations is included in the list of maven dependencies for protobuf_maven.

Does anyone have any idea about how to troubleshoot / fix this error?

I should note that this build error occurs when executing the build on Google Cloud Build. When I trigger the build locally, it works fine.

[mkruskal-google]

If you set the RJE_VERBOSE=1 environment variable, it'll provide a lot of useful information here. I suspect that this specific error is because you're using Java 8, and rules_jvm_external no longer supports it. #1116 removed a check that guarded the use of the argsfile, and now it's trying to pass an argsfile to the Java 8 binary that doesn't understand them.

Once you fixed this to use Java 11+, you'd likely still hit the dev_dependency issue you noted on protobuf_maven. protocolbuffers/protobuf#20549 should fix that by splitting up our dev dependencies from our real ones

[lruellan]

You're right. It looks like the Bazel image published by the Bazel team uses Java 8. Same for the image published by the GCP team. Let me see how to get an image built with Java 11.