SpringBoot After migrating to Spring Boot 2.3.4 receiving No Such Method Error Exception for snakeYaml Method

After migrating from Spring Boot 2.3.3 to 2.3.4 (only version change in POM) I am receiving the following upon Application Bootstrap:

**_java.lang.NoSuchMethodError: 'void org.yaml.snakeyaml.LoaderOptions.setMaxAliasesForCollections(int)'_**
    at org.springframework.boot.env.OriginTrackedYamlLoader.createYaml(OriginTrackedYamlLoader.java:67) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.beans.factory.config.YamlProcessor.process(YamlProcessor.java:162) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.boot.env.OriginTrackedYamlLoader.load(OriginTrackedYamlLoader.java:82) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.env.YamlPropertySourceLoader.load(YamlPropertySourceLoader.java:50) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.loadDocuments(ConfigFileApplicationListener.java:607) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:523) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.loadForFileExtension(ConfigFileApplicationListener.java:498) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:468) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.lambda$null$7(ConfigFileApplicationListener.java:447) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at java.lang.Iterable.forEach(Iterable.java:75) ~[?:?]
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.lambda$load$8(ConfigFileApplicationListener.java:447) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at java.lang.Iterable.forEach(Iterable.java:75) ~[?:?]
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:444) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.lambda$load$0(ConfigFileApplicationListener.java:347) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.context.config.FilteredPropertySource.apply(FilteredPropertySource.java:54) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:335) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.context.config.ConfigFileApplicationListener.addPropertySources(ConfigFileApplicationListener.java:226) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.context.config.ConfigFileApplicationListener.postProcessEnvironment(ConfigFileApplicationListener.java:210) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.context.config.ConfigFileApplicationListener.onApplicationEnvironmentPreparedEvent(ConfigFileApplicationListener.java:200) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.context.config.ConfigFileApplicationListener.onApplicationEvent(ConfigFileApplicationListener.java:188) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:80) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:53) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:345) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:140) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.cloud.bootstrap.BootstrapApplicationListener.bootstrapServiceContext(BootstrapApplicationListener.java:212) ~[spring-cloud-context-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:117) ~[spring-cloud-context-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:74) ~[spring-cloud-context-2.2.5.RELEASE.jar:2.2.5.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:80) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:53) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:345) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:120) ~[spring-boot-test-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99) ~[spring-test-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124) ~[spring-test-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:123) ~[spring-test-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:118) ~[spring-test-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83) ~[spring-test-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.boot.test.autoconfigure.SpringBootDependencyInjectionTestExecutionListener.prepareTestInstance(SpringBootDependencyInjectionTestExecutionListener.java:43) ~[spring-boot-test-autoconfigure-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:244) ~[spring-test-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:98) ~[spring-test-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$5(ClassBasedTestDescriptor.java:341) ~[junit-jupiter-engine-5.6.2.jar:5.6.2]
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.executeAndMaskThrowable(ClassBasedTestDescriptor.java:346) ~[junit-jupiter-engine-5.6.2.jar:5.6.2]
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$6(ClassBasedTestDescriptor.java:341) ~[junit-jupiter-engine-5.6.2.jar:5.6.2]
    at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) ~[?:?]
    at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) ~[?:?]
    at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625) ~[?:?]
    at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[?:?]
    at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[?:?]
    at java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:312) ~[?:?]
    at java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735) ~[?:?]
    at java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734) ~[?:?]
    at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) ~[?:?]
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestInstancePostProcessors(ClassBasedTestDescriptor.java:340) ~[junit-jupiter-engine-5.6.2.jar:5.6.2]
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:263) ~[junit-jupiter-engine-5.6.2.jar:5.6.2]
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$2(ClassBasedTestDescriptor.java:256) ~[junit-jupiter-engine-5.6.2.jar:5.6.2]
    at java.util.Optional.orElseGet(Optional.java:362) ~[?:?]
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$3(ClassBasedTestDescriptor.java:255) ~[junit-jupiter-engine-5.6.2.jar:5.6.2]
    at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:29) ~[junit-jupiter-engine-5.6.2.jar:5.6.2]
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:108) ~[junit-jupiter-engine-5.6.2.jar:5.6.2]
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:107) ~[junit-jupiter-engine-5.6.2.jar:5.6.2]
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:71) ~[junit-jupiter-engine-5.6.2.jar:5.6.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$1(NodeTestTask.java:107) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:107) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:75) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at java.util.ArrayList.forEach(ArrayList.java:1511) ~[?:?]
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at java.util.ArrayList.forEach(ArrayList.java:1511) ~[?:?]
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51) ~[junit-platform-engine-1.6.2.jar:1.6.2]
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:248) ~[junit-platform-launcher-1.6.2.jar:1.6.2]
    at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$5(DefaultLauncher.java:211) ~[junit-platform-launcher-1.6.2.jar:1.6.2]
    at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:226) [junit-platform-launcher-1.6.2.jar:1.6.2]
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:199) [junit-platform-launcher-1.6.2.jar:1.6.2]
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:132) [junit-platform-launcher-1.6.2.jar:1.6.2]
    at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:71) [junit5-rt.jar:?]
    at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33) [junit-rt.jar:?]
    at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:220) [junit-rt.jar:?]
    at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:53) [junit-rt.jar:?]

I have several configuration files, please advise if additional information is needed.

Comment From: philwebb

It looks like you might have an older version of SnakeYaml on your classpath. LoaderOptions.setMaxAliasesForCollections was added in SnakeYaml 1.26. Have you pinned the SnakeYaml version? What's the output of mvn dependency:tree?

Comment From: jaschenk

Phil, here is attached dependency:tree for the project, it looks like - org.yaml:snakeyaml:jar:1.26:compile is being pulled in same and same version for Spring Boot 2.3.3 I believe.

Comment From: philwebb

(pulled from email response so we can apply markdown formatting)

mvn dependency:tree
[INFO] Scanning for projects...
[INFO]
[INFO] -----------------< io.bh.bhe.nve.dsp:max-data-service >-----------------
[INFO] Building max-data-service DEV-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-dependency-plugin:3.1.2:tree (default-cli) @max-data-service ---
[INFO] io.bh.bhe.nve.dsp:max-data-service:jar:DEV-SNAPSHOT
[INFO] +-org.springframework.boot:spring-boot-starter-webflux:jar:2.3.4.RELEASE:compile
[INFO] |  +-org.springframework.boot:spring-boot-starter-json:jar:2.3.4.RELEASE:compile
[INFO] |  |  +-com.fasterxml.jackson.datatype:jackson-datatype-jdk8:jar:2.11.2:compile
[INFO] |  |  +-com.fasterxml.jackson.datatype:jackson-datatype-jsr310:jar:2.11.2:compile
[INFO] |  |  \-com.fasterxml.jackson.module:jackson-module-parameter-names:jar:2.11.2:compile
[INFO] |  +-org.springframework.boot:spring-boot-starter-reactor-netty:jar:2.3.4.RELEASE:compile
[INFO] |  |  \-io.projectreactor.netty:reactor-netty:jar:0.9.12.RELEASE:compile
[INFO] |  |     +- io.netty:netty-codec-http:jar:4.1.52.Final:compile
[INFO] |  |     |  +- io.netty:netty-common:jar:4.1.52.Final:compile
[INFO] |  |     |  +- io.netty:netty-buffer:jar:4.1.52.Final:compile
[INFO] |  |     |  +- io.netty:netty-transport:jar:4.1.52.Final:compile
[INFO] |  |     |  \- io.netty:netty-codec:jar:4.1.52.Final:compile
[INFO] |  |     +- io.netty:netty-codec-http2:jar:4.1.52.Final:compile
[INFO] |  |     +- io.netty:netty-handler:jar:4.1.52.Final:compile
[INFO] |  |     |  \- io.netty:netty-resolver:jar:4.1.52.Final:compile
[INFO] |  |     +- io.netty:netty-handler-proxy:jar:4.1.52.Final:compile
[INFO] |  |     |  \- io.netty:netty-codec-socks:jar:4.1.52.Final:compile
[INFO] |  |     \-io.netty:netty-transport-native-epoll:jar:linux-x86_64:4.1.52.Final:compile
[INFO] |  |        \-io.netty:netty-transport-native-unix-common:jar:4.1.52.Final:compile
[INFO] |  +- org.springframework:spring-web:jar:5.2.9.RELEASE:compile
[INFO] |  +- org.springframework:spring-webflux:jar:5.2.9.RELEASE:compile
[INFO] |  \- org.synchronoss.cloud:nio-multipart-parser:jar:1.1.0:compile
[INFO] |     +- org.slf4j:slf4j-api:jar:1.7.30:compile
[INFO] |     \- org.synchronoss.cloud:nio-stream-storage:jar:1.1.3:compile
[INFO] +- org.springframework.boot:spring-boot-starter-data-couchbase-reactive:jar:2.3.4.RELEASE:compile
[INFO] |  +- io.projectreactor:reactor-core:jar:3.3.10.RELEASE:compile
[INFO] |  |  \- org.reactivestreams:reactive-streams:jar:1.0.3:compile
[INFO] |  +- io.reactivex:rxjava-reactive-streams:jar:1.2.1:compile
[INFO] |  |  \- io.reactivex:rxjava:jar:1.3.8:compile
[INFO] |  \-org.springframework.data:spring-data-couchbase:jar:4.0.4.RELEASE:compile
[INFO] |     +- org.springframework:spring-tx:jar:5.2.9.RELEASE:compile
[INFO] |     +-org.springframework.data:spring-data-commons:jar:2.3.4.RELEASE:compile
[INFO] |     \- com.couchbase.client:java-client:jar:3.0.8:compile
[INFO] |        \- com.couchbase.client:core-io:jar:2.0.9:compile
[INFO] +- javax.xml.bind:jaxb-api:jar:2.3.0:compile
[INFO] +- com.fasterxml.jackson.dataformat:jackson-dataformat-csv:jar:2.5.3:compile
[INFO] |  +- com.fasterxml.jackson.core:jackson-core:jar:2.11.2:compile
[INFO] |  \- com.fasterxml.jackson.core:jackson-databind:jar:2.11.2:compile
[INFO] +- org.springframework.boot:spring-boot-starter-test:jar:2.3.4.RELEASE:test
[INFO] |  +-org.springframework.boot:spring-boot-test:jar:2.3.4.RELEASE:test
[INFO] |  +-org.springframework.boot:spring-boot-test-autoconfigure:jar:2.3.4.RELEASE:test
[INFO] |  +- com.jayway.jsonpath:json-path:jar:2.4.0:test
[INFO] |  |  \- net.minidev:json-smart:jar:2.3:test
[INFO] |  |     \- net.minidev:accessors-smart:jar:1.2:test
[INFO] |  |        \- org.ow2.asm:asm:jar:5.0.4:test
[INFO] |  +- jakarta.xml.bind:jakarta.xml.bind-api:jar:2.3.3:test
[INFO] |  |  \- jakarta.activation:jakarta.activation-api:jar:1.2.2:test
[INFO] |  +- org.assertj:assertj-core:jar:3.16.1:test
[INFO] |  +- org.hamcrest:hamcrest:jar:2.2:test
[INFO] |  +- org.junit.jupiter:junit-jupiter:jar:5.6.2:test
[INFO] |  |  +- org.junit.jupiter:junit-jupiter-params:jar:5.6.2:test
[INFO] |  |  \- org.junit.jupiter:junit-jupiter-engine:jar:5.6.2:test
[INFO] |  |     \- org.junit.platform:junit-platform-engine:jar:1.6.2:test
[INFO] |  +- org.skyscreamer:jsonassert:jar:1.5.0:test
[INFO] |  |  \-com.vaadin.external.google:android-json:jar:0.0.20131108.vaadin1:test
[INFO] |  +- org.springframework:spring-core:jar:5.2.9.RELEASE:compile
[INFO] |  |  \- org.springframework:spring-jcl:jar:5.2.9.RELEASE:compile
[INFO] |  +- org.springframework:spring-test:jar:5.2.9.RELEASE:test
[INFO] |  \- org.xmlunit:xmlunit-core:jar:2.7.0:test
[INFO] +- io.projectreactor:reactor-test:jar:3.3.10.RELEASE:test
[INFO] +- io.projectreactor.tools:blockhound:jar:1.0.4.RELEASE:test
[INFO] +- com.github.javafaker:javafaker:jar:1.0.2:test
[INFO] |  +- org.apache.commons:commons-lang3:jar:3.10:test
[INFO] |  +- org.yaml:snakeyaml:jar:android:1.23:test
[INFO] |  \- com.github.mifmif:generex:jar:1.0.2:test
[INFO] |     \- dk.brics.automaton:automaton:jar:1.11-8:test
[INFO] +- org.springframework.boot:spring-boot-starter:jar:2.3.4.RELEASE:compile
[INFO] |  +- org.springframework.boot:spring-boot:jar:2.3.4.RELEASE:compile
[INFO] |  +-org.springframework.boot:spring-boot-autoconfigure:jar:2.3.4.RELEASE:compile
[INFO] |  +-org.springframework.boot:spring-boot-starter-logging:jar:2.3.4.RELEASE:compile
[INFO] |  +- jakarta.annotation:jakarta.annotation-api:jar:1.3.5:compile
[INFO] |  \- org.yaml:snakeyaml:jar:1.26:compile
[INFO] +- org.springframework.boot:spring-boot-starter-log4j2:jar:2.3.4.RELEASE:compile
[INFO] |  +- org.apache.logging.log4j:log4j-slf4j-impl:jar:2.13.3:compile
[INFO] |  |  \- org.apache.logging.log4j:log4j-api:jar:2.13.3:compile
[INFO] |  +- org.apache.logging.log4j:log4j-core:jar:2.13.3:compile
[INFO] |  +- org.apache.logging.log4j:log4j-jul:jar:2.13.3:compile
[INFO] |  \- org.slf4j:jul-to-slf4j:jar:1.7.30:compile
[INFO] +-org.springframework:spring-context-support:jar:5.2.9.RELEASE:compile
[INFO] |  +- org.springframework:spring-beans:jar:5.2.9.RELEASE:compile
[INFO] |  \- org.springframework:spring-context:jar:5.2.9.RELEASE:compile
[INFO] |     \- org.springframework:spring-expression:jar:5.2.9.RELEASE:compile
[INFO] +- org.springframework.boot:spring-boot-starter-actuator:jar:2.3.4.RELEASE:compile
[INFO] |  \- org.springframework.boot:spring-boot-actuator-autoconfigure:jar:2.3.4.RELEASE:compile
[INFO] |     \- org.springframework.boot:spring-boot-actuator:jar:2.3.4.RELEASE:compile
[INFO] +- org.springframework.boot:spring-boot-starter-aop:jar:2.3.4.RELEASE:compile
[INFO] |  +- org.springframework:spring-aop:jar:5.2.9.RELEASE:compile
[INFO] |  \- org.aspectj:aspectjweaver:jar:1.9.6:compile
[INFO] +- org.springframework.retry:spring-retry:jar:1.3.0:compile
[INFO] |  \- javax.annotation:javax.annotation-api:jar:1.3.2:compile
[INFO] +- org.springframework:spring-aspects:jar:5.2.9.RELEASE:compile
[INFO] +- org.springframework.cloud:spring-cloud-config-client:jar:2.2.4.RELEASE:compile
[INFO] |  +- org.springframework.cloud:spring-cloud-commons:jar:2.2.5.RELEASE:compile
[INFO] |  |  \- org.springframework.security:spring-security-crypto:jar:5.3.4.RELEASE:compile
[INFO] |  +- org.springframework.cloud:spring-cloud-context:jar:2.2.5.RELEASE:compile
[INFO] |  \- com.fasterxml.jackson.core:jackson-annotations:jar:2.11.2:compile
[INFO] +- org.springframework.cloud:spring-cloud-starter-consul-discovery:jar:2.2.4.RELEASE:compile
[INFO] |  +- org.springframework.cloud:spring-cloud-starter-consul:jar:2.2.4.RELEASE:compile
[INFO] |  |  +- org.springframework.cloud:spring-cloud-consul-core:jar:2.2.4.RELEASE:compile
[INFO] |  |  |  \- org.springframework.boot:spring-boot-starter-validation:jar:2.3.4.RELEASE:compile
[INFO] |  |  |     +- org.glassfish:jakarta.el:jar:3.0.3:compile
[INFO] |  |  |     \- org.hibernate.validator:hibernate-validator:jar:6.1.5.Final:compile
[INFO] |  |  |        +- jakarta.validation:jakarta.validation-api:jar:2.0.2:compile
[INFO] |  |  |        +- org.jboss.logging:jboss-logging:jar:3.4.1.Final:compile
[INFO] |  |  |        \- com.fasterxml:classmate:jar:1.5.1:compile
[INFO] |  |  +- com.ecwid.consul:consul-api:jar:1.4.5:compile
[INFO] |  |  +- com.google.code.gson:gson:jar:2.8.6:compile
[INFO] |  |  +- org.apache.httpcomponents:httpclient:jar:4.5.12:compile
[INFO] |  |  |  \- commons-codec:commons-codec:jar:1.14:compile
[INFO] |  |  \- org.apache.httpcomponents:httpcore:jar:4.4.13:compile
[INFO] |  +- org.springframework.cloud:spring-cloud-consul-discovery:jar:2.2.4.RELEASE:compile
[INFO] |  |  \- commons-configuration:commons-configuration:jar:1.8:compile
[INFO] |  |     \- commons-lang:commons-lang:jar:2.6:compile
[INFO] |  +- org.springframework.cloud:spring-cloud-netflix-hystrix:jar:2.2.5.RELEASE:compile
[INFO] |  +- org.springframework.cloud:spring-cloud-starter-netflix-ribbon:jar:2.2.5.RELEASE:compile
[INFO] |  |  +- org.springframework.cloud:spring-cloud-netflix-ribbon:jar:2.2.5.RELEASE:compile
[INFO] |  |  |  \- org.springframework.cloud:spring-cloud-netflix-archaius:jar:2.2.5.RELEASE:compile
[INFO] |  |  +- org.springframework.cloud:spring-cloud-starter-netflix-archaius:jar:2.2.5.RELEASE:compile
[INFO] |  |  |  \- com.netflix.archaius:archaius-core:jar:0.7.6:compile
[INFO] |  |  |     \- com.google.code.findbugs:jsr305:jar:3.0.1:runtime
[INFO] |  |  +- com.netflix.ribbon:ribbon:jar:2.3.0:compile
[INFO] |  |  |  +- com.netflix.ribbon:ribbon-transport:jar:2.3.0:runtime
[INFO] |  |  |  |  +- io.reactivex:rxnetty-contexts:jar:0.4.9:runtime
[INFO] |  |  |  |  \- io.reactivex:rxnetty-servo:jar:0.4.9:runtime
[INFO] |  |  |  +- com.netflix.hystrix:hystrix-core:jar:1.5.18:runtime
[INFO] |  |  |  +- javax.inject:javax.inject:jar:1:runtime
[INFO] |  |  |  +- io.reactivex:rxnetty:jar:0.4.9:runtime
[INFO] |  |  |  \- com.google.guava:guava:jar:29.0-jre:runtime
[INFO] |  |  |     +- com.google.guava:failureaccess:jar:1.0.1:runtime
[INFO] |  |  |     +- com.google.guava:listenablefuture:jar:9999.0-empty-to-avoid-conflict-with-guava:runtime
[INFO] |  |  |     +- org.checkerframework:checker-qual:jar:2.11.1:runtime
[INFO] |  |  |     +- com.google.errorprone:error_prone_annotations:jar:2.3.4:runtime
[INFO] |  |  |     \- com.google.j2objc:j2objc-annotations:jar:1.3:runtime
[INFO] |  |  +- com.netflix.ribbon:ribbon-core:jar:2.3.0:compile
[INFO] |  |  +- com.netflix.ribbon:ribbon-httpclient:jar:2.3.0:compile
[INFO] |  |  |  +- commons-collections:commons-collections:jar:3.2.2:runtime
[INFO] |  |  |  +- com.sun.jersey:jersey-client:jar:1.19.1:runtime
[INFO] |  |  |  |  \- com.sun.jersey:jersey-core:jar:1.19.1:runtime
[INFO] |  |  |  |     \- javax.ws.rs:jsr311-api:jar:1.1.1:runtime
[INFO] |  |  |  +- com.sun.jersey.contribs:jersey-apache-client4:jar:1.19.1:runtime
[INFO] |  |  |  +- com.netflix.servo:servo-core:jar:0.12.21:runtime
[INFO] |  |  |  \- com.netflix.netflix-commons:netflix-commons-util:jar:0.3.0:runtime
[INFO] |  |  \- com.netflix.ribbon:ribbon-loadbalancer:jar:2.3.0:compile
[INFO] |  |     \- com.netflix.netflix-commons:netflix-statistics:jar:0.1.1:runtime
[INFO] |  +- org.springframework.cloud:spring-cloud-starter-loadbalancer:jar:2.2.5.RELEASE:compile
[INFO] |  |  +- org.springframework.cloud:spring-cloud-loadbalancer:jar:2.2.5.RELEASE:compile
[INFO] |  |  |  \- io.projectreactor.addons:reactor-extra:jar:3.3.4.RELEASE:compile
[INFO] |  |  +- org.springframework.boot:spring-boot-starter-cache:jar:2.3.4.RELEASE:compile
[INFO] |  |  \- com.stoyanr:evictor:jar:1.0.0:compile
[INFO] |  \- joda-time:joda-time:jar:2.10.5:compile
[INFO] +- io.micrometer:micrometer-core:jar:1.5.3:compile
[INFO] |  +- org.hdrhistogram:HdrHistogram:jar:2.1.12:compile
[INFO] |  \- org.latencyutils:LatencyUtils:jar:2.0.3:runtime
[INFO] +- io.micrometer:micrometer-registry-jmx:jar:1.5.3:compile
[INFO] |  \- io.dropwizard.metrics:metrics-jmx:jar:4.1.12.1:compile
[INFO] |     \- io.dropwizard.metrics:metrics-core:jar:4.1.12.1:compile
[INFO] +- io.micrometer:micrometer-registry-prometheus:jar:1.5.3:compile
[INFO] |  \- io.prometheus:simpleclient_common:jar:0.8.1:compile
[INFO] +- io.prometheus:simpleclient_pushgateway:jar:0.9.0:compile
[INFO] |  \- io.prometheus:simpleclient:jar:0.9.0:compile
[INFO] +- org.projectlombok:lombok:jar:1.18.12:provided
[INFO] +- org.mockito:mockito-core:jar:3.4.6:test
[INFO] |  +- net.bytebuddy:byte-buddy:jar:1.10.14:test
[INFO] |  +- net.bytebuddy:byte-buddy-agent:jar:1.10.14:test
[INFO] |  \- org.objenesis:objenesis:jar:2.6:test
[INFO] +- org.mockito:mockito-junit-jupiter:jar:3.4.6:test
[INFO] |  \- org.junit.jupiter:junit-jupiter-api:jar:5.6.2:test
[INFO] |     +- org.apiguardian:apiguardian-api:jar:1.1.0:test
[INFO] |     +- org.opentest4j:opentest4j:jar:1.2.0:test
[INFO] |     \- org.junit.platform:junit-platform-commons:jar:1.6.2:test
[INFO] \- org.springframework.cloud:spring-cloud-starter-sleuth:pom:2.2.4.RELEASE:compile
[INFO]    +- org.springframework.cloud:spring-cloud-starter:jar:2.2.5.RELEASE:compile
[INFO]    |  \- org.springframework.security:spring-security-rsa:jar:1.0.9.RELEASE:compile
[INFO]    |     \- org.bouncycastle:bcpkix-jdk15on:jar:1.64:compile
[INFO]    |        \- org.bouncycastle:bcprov-jdk15on:jar:1.64:compile
[INFO]    \- org.springframework.cloud:spring-cloud-sleuth-core:jar:2.2.5.RELEASE:compile
[INFO]       +- org.aspectj:aspectjrt:jar:1.9.6:compile
[INFO]       +- io.zipkin.brave:brave:jar:5.12.3:compile
[INFO]       |  \- io.zipkin.reporter2:zipkin-reporter-brave:jar:2.15.0:compile
[INFO]       +- io.zipkin.brave:brave-context-slf4j:jar:5.12.3:compile
[INFO]       +- io.zipkin.brave:brave-instrumentation-messaging:jar:5.12.3:compile
[INFO]       +- io.zipkin.brave:brave-instrumentation-rpc:jar:5.12.3:compile
[INFO]       +- io.zipkin.brave:brave-instrumentation-spring-web:jar:5.12.3:compile
[INFO]       |  \- io.zipkin.brave:brave-instrumentation-http:jar:5.12.3:compile
[INFO]       +- io.zipkin.brave:brave-instrumentation-spring-rabbit:jar:5.12.3:compile
[INFO]       +- io.zipkin.brave:brave-instrumentation-kafka-clients:jar:5.12.3:compile
[INFO]       +- io.zipkin.brave:brave-instrumentation-kafka-streams:jar:5.12.3:compile
[INFO]       +- io.zipkin.brave:brave-instrumentation-httpclient:jar:5.12.3:compile
[INFO]       +- io.zipkin.brave:brave-instrumentation-httpasyncclient:jar:5.12.3:compile
[INFO]       +- io.zipkin.brave:brave-instrumentation-spring-webmvc:jar:5.12.3:compile
[INFO]       |  \- io.zipkin.brave:brave-instrumentation-servlet:jar:5.12.3:compile
[INFO]       +- io.zipkin.brave:brave-instrumentation-jms:jar:5.12.3:compile
[INFO]       \- io.zipkin.reporter2:zipkin-reporter-metrics-micrometer:jar:2.15.0:compile
[INFO]          +- io.zipkin.reporter2:zipkin-reporter:jar:2.15.0:compile
[INFO]          \- io.zipkin.zipkin2:zipkin:jar:2.21.1:compile

Comment From: philwebb

It looks like your compile dependency is SnakeYaml 1.2.6, but your test dependency might be 1.2.3:

[INFO] +- org.springframework.boot:spring-boot-starter:jar:2.3.4.RELEASE:compile
[INFO] |  +- org.springframework.boot:spring-boot:jar:2.3.4.RELEASE:compile
[INFO] |  +-org.springframework.boot:spring-boot-autoconfigure:jar:2.3.4.RELEASE:compile
[INFO] |  +-org.springframework.boot:spring-boot-starter-logging:jar:2.3.4.RELEASE:compile
[INFO] |  +- jakarta.annotation:jakarta.annotation-api:jar:1.3.5:compile
[INFO] |  \- org.yaml:snakeyaml:jar:1.26:compile

[INFO] +- com.github.javafaker:javafaker:jar:1.0.2:test
[INFO] |  +- org.apache.commons:commons-lang3:jar:3.10:test
[INFO] |  +- org.yaml:snakeyaml:jar:android:1.23:test
[INFO] |  \- com.github.mifmif:generex:jar:1.0.2:test
[INFO] |     \- dk.brics.automaton:automaton:jar:1.11-8:test

I'd recommend using Spring Boot's managed dependencies if possible, either by using spring-boot-starter-parent as your parent POM or by import our dependencies BOM (see "Using Spring Boot without the Parent POM" in the Maven Plugin docs.

If you're already doing that, please provide a sample project so that we can dig into why the SnakeYaml dependency isn't being managed for tests.

Comment From: JWThewes

Does it work when doing a mvn clean package and running the packaged jar via java -jar? Just to make sure this isn't an IDE <-> Maven sync problem.

Comment From: jaschenk

Adding exclusion of org.yaml:snakeyaml:jar:android:1.23:test from javafaker removed the issue.

Comment From: jaschenk

All good sorry for false alarm.

Comment From: jaschenk

Does it work when doing a mvn clean package and running the packaged jar via java -jar? Just to make sure this isn't an IDE <-> Maven sync problem.

All good, had to add an exclusion for javafaker ...

Thanks, jeff