Hello,
After upgrading the *Apache httpClient* to 4.4, I found that other plugins
such as Git-Client/Maven-plugin that also uses the httpClient with different
versions collapses with ours. So After I added the *Mask-Classes* attribute
the problem was gone, but it looks like this isolated environment dose not
apply for Slaves.
When I`m running the HttpClient logic from the *slave* using the
*hudson.FilePath.act* I get the following error:

at hudson.model.Executor.run(Executor.java:240)
Caused by: java.io.IOException: Remote call on local-windows failed
        at hudson.remoting.Channel.call(Channel.java:748)
        at hudson.FilePath.act(FilePath.java:907)
        ... 9 more
Caused by: java.lang.NoSuchFieldError: INSTANCE
        at
org.apache.http.impl.io.DefaultHttpRequestWriterFactory.<init>(DefaultHttpRequestWriterFactory.java:52)
        at
org.apache.http.impl.io.DefaultHttpRequestWriterFactory.<init>(DefaultHttpRequestWriterFactory.java:56)
        at
org.apache.http.impl.io.DefaultHttpRequestWriterFactory.<clinit>(DefaultHttpRequestWriterFactory.java:46)
        at
org.apache.http.impl.conn.ManagedHttpClientConnectionFactory.<init>(ManagedHttpClientConnectionFactory.java:72)
        at
org.apache.http.impl.conn.ManagedHttpClientConnectionFactory.<init>(ManagedHttpClientConnectionFactory.java:84)
        at
org.apache.http.impl.conn.ManagedHttpClientConnectionFactory.<clinit>(ManagedHttpClientConnectionFactory.java:59)
        at
org.apache.http.impl.conn.PoolingHttpClientConnectionManager$InternalConnectionFactory.<init>(PoolingHttpClientConnectionManager.java:493)
        at
org.apache.http.impl.conn.PoolingHttpClientConnectionManager.<init>(PoolingHttpClientConnectionManager.java:149)
        at
org.apache.http.impl.conn.PoolingHttpClientConnectionManager.<init>(PoolingHttpClientConnectionManager.java:138)
        at
org.apache.http.impl.conn.PoolingHttpClientConnectionManager.<init>(PoolingHttpClientConnectionManager.java:114)
        at
org.apache.http.impl.client.HttpClientBuilder.build(HttpClientBuilder.java:726)
        at
org.jfrog.build.client.HttpClientConfigurator.getClient(HttpClientConfigurator.java:91)
        at
org.jfrog.build.client.ArtifactoryHttpClient.getHttpClient(ArtifactoryHttpClient.java:140)
        at
org.jfrog.build.client.ArtifactoryHttpClient.execute(ArtifactoryHttpClient.java:209)
        at
org.jfrog.build.client.ArtifactoryHttpClient.upload(ArtifactoryHttpClient.java:205)
        at
org.jfrog.build.extractor.clientConfiguration.client.ArtifactoryBuildInfoClient.uploadFile(ArtifactoryBuildInfoClient.java:603)
        at
org.jfrog.build.extractor.clientConfiguration.client.ArtifactoryBuildInfoClient.deployArtifact(ArtifactoryBuildInfoClient.java:315)
        at
org.jfrog.hudson.generic.GenericArtifactsDeployer$FilesDeployerCallable.deploy(GenericArtifactsDeployer.java:179)
        at
org.jfrog.hudson.generic.GenericArtifactsDeployer$FilesDeployerCallable.invoke(GenericArtifactsDeployer.java:151)
        at
org.jfrog.hudson.generic.GenericArtifactsDeployer$FilesDeployerCallable.invoke(GenericArtifactsDeployer.java:119)
        at hudson.FilePath$FileCallableWrapper.call(FilePath.java:2484)
        at hudson.remoting.UserRequest.perform(UserRequest.java:118)
        at hudson.remoting.UserRequest.perform(UserRequest.java:48)
        at hudson.remoting.Request$2.run(Request.java:328)
        at
hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at hudson.remoting.Engine$1$1.run(Engine.java:63)
        at java.lang.Thread.run(Thread.java:744)


Help will appreciated



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