devinbost opened a new issue #6231: Intermittent Maven build errors - Could not resolve dependencies URL: https://github.com/apache/pulsar/issues/6231 We're occasionally getting build errors that look like this: ```[ERROR] Failed to execute goal on project buildtools: Could not resolve dependencies for project org.apache.pulsar:buildtools:jar:2.6.0-SNAPSHOT: Could not transfer artifact org.apache-extras.beanshell:bsh:jar:2.0b6 from/to central (https://repo.maven.apache.org/maven2): Transfer failed for https://repo.maven.apache.org/maven2/org/apache-extras/beanshell/bsh/2.0b6/bsh-2.0b6.jar 503 between bytes timeout -> [Help 1]``` ```[ERROR] Failed to execute goal on project pulsar-presto-distribution: Could not resolve dependencies for project org.apache.pulsar:pulsar-presto-distribution:jar:2.6.0-SNAPSHOT: Could not transfer artifact org.eclipse.jetty:jetty-io:jar:9.4.11.v20180605 from/to central (https://repo.maven.apache.org/maven2): Failed to transfer file https://repo.maven.apache.org/maven2/org/eclipse/jetty/jetty-io/9.4.11.v20180605/jetty-io-9.4.11.v20180605.jar with status code 500 -> [Help 1] ``` Here's a third case (with an image of where it appeared): 
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