{"record":{"id":"3b794a254d661ddc","repo":"apache/maven","slug":"for-this-reason-future-maven-versions-might-no-lo","errorCode":null,"errorMessage":"For this reason, future Maven versions might no longer support building such malformed projects.","messagePattern":"For this reason, future Maven versions might no longer support building such malformed projects\\.","errorType":"console","errorClass":null,"httpStatus":null,"severity":"warning","filePath":"impl/maven-core/src/main/java/org/apache/maven/project/collector/DefaultProjectsSelector.java","lineNumber":96,"sourceCode":"                        result.getProjectId());\n\n                if (request.isShowErrors()) { // this means -e or -X (as -X enables -e as well)\n                    for (ModelProblem problem : result.getProblems()) {\n                        String loc = ModelProblemUtils.formatLocation(problem, result.getProjectId());\n                        LOGGER.warn(\"{}{}\", problem.getMessage(), ((loc != null && !loc.isEmpty()) ? \" @ \" + loc : \"\"));\n                    }\n                }\n            }\n        }\n\n        if (totalProblemsCount > 0) {\n            LOGGER.warn(\"\");\n            LOGGER.warn(\"Total model problems reported: {}\", totalProblemsCount);\n            LOGGER.warn(\"\");\n            LOGGER.warn(\"It is highly recommended to fix these problems\"\n                    + \" because they threaten the stability of your build.\");\n            LOGGER.warn(\"\");\n            LOGGER.warn(\"For this reason, future Maven versions might no\"\n                    + \" longer support building such malformed projects.\");\n            LOGGER.warn(\"\");\n        }\n\n        return projects;\n    }\n}\n","sourceCodeStart":78,"sourceCodeEnd":104,"githubUrl":"https://github.com/apache/maven/blob/e4093d4e120eac99d6bdce5ba67cace2f3085c97/impl/maven-core/src/main/java/org/apache/maven/project/collector/DefaultProjectsSelector.java#L78-L104","documentation":"Final advisory line of the model-problem report: Maven warns that the lenient handling currently applied to the reported problems may be removed, so future Maven versions could refuse to build these projects at all. Fixed text, printed only when the aggregate problem count is greater than zero. It is the actionable escalation of the preceding 'highly recommended' line.","triggerScenarios":"Same condition as the total line: totalProblemsCount > 0 after iterating the ProjectBuildingResults of the selected projects. Any model problem, even a minor warning, produces this line.","commonSituations":"Projects repeatedly upgraded across Maven major versions suddenly breaking because a previously tolerated model problem (bad packaging id, missing dependency version, invalid plugin configuration) became a hard error.","solutions":["Fix all problems reported with -e now, rather than waiting for the next Maven upgrade","Before upgrading Maven, build with the new version in CI and treat any such warning as a blocker","For problems originating in a consumed parent, contribute fixes upstream or override the section locally"],"exampleFix":"# before: warning ignored, build passes on Maven 3\nmvn clean install\n\n# after: rehearse the next major version and fix what it flags\nmvn clean install -Dmaven.version.check=false  # (toolchain pin)\n# then: install the new Maven version in CI, run the same build, fix every reported model problem","handlingStrategy":"validation","validationCode":"# Forward-compatibility gate: fail if Maven hints a future hard failure\nmvn -e clean verify 2>&1 | tee build.log\ngrep -q 'future Maven versions might no longer support' build.log && { echo 'fix model problems now'; exit 1; } || true","typeGuard":null,"tryCatchPattern":null,"preventionTips":["Run a scheduled CI job with the latest Maven release candidate and treat this warning as release-blocking","Prefer the strictest available model validation during development so upgrades never surprise you","Fix problems in parents/BOMs upstream so all consumers stop seeing the advisory"],"tags":["maven","model-building","forward-compatibility","advisory"],"backgroundTag":"maven-model-problems","analyzedSha":"e4093d4e120eac99d6bdce5ba67cace2f3085c97","analyzedAt":"2026-08-21T22:58:24.034Z","schemaVersion":2},"datasetVersion":"2026-08-21T23:17:16.201Z"}