Gradle 6 --no-daemon still depends on daemon -- even if it wont start

Hi–

I’ve just upgraded to Gradle 6 and my builds on Jenkins are now failing – reverting back to 5.6.4 resolves the issue.

$ ./gradlew --no-daemon clean assemble > /tmp/t4

FAILURE: Build failed with an exception.

  • What went wrong:
    The first result from the daemon was empty. Most likely the process died immediately after connection.

  • Try:
    Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

  • Get more help at https://help.gradle.org

Version Information:

$ ./gradlew --version

------------------------------------------------------------
Gradle 6.0
------------------------------------------------------------

Build time: 2019-11-08 18:12:12 UTC
Revision: 0a5b531749138f2f983f7c888fa7790bfc52d88a

Kotlin: 1.3.50
Groovy: 2.5.8
Ant: Apache Ant™ version 1.10.7 compiled on September 1 2019
JVM: 11.0.4 (Ubuntu 11.0.4+11-post-Ubuntu-1ubuntu218.04.3)
OS: Linux 4.15.0-65-generic amd64

Not captured in the output above is the following:

$ ./gradlew --no-daemon clean assemble
To honour the JVM settings for this build a new JVM will be forked. Please consider using the daemon: https://docs.gradle.org/6.0/userguide/gradle_daemon.html.

Starting Daemon

How can I build without a daemon? Thanks.

Eric

This is not possible. The “Daemon” started is the process that runs the build. Without the process, you can’t build. The --daemon / --no-daemon option is about daemon behavior of that build process. It either starts and continues to run in the background (--daemon) so that it can be used for multiple builds, or it terminates immediately after each build (--no-daemon).

This is true for Gradle 6 and Gradle 5.x (and earlier).

You have Gradle 6 problem with your build here (perhaps memory related), not a daemon problem.

Hi–

As a long time Gradle user, I thought that the right way on a build server was to not use the daemon – I didn’t realize that it was changed to always run one.

So how do I troubleshoot what is going on with it?

The logs look like:

2019-11-10T21:46:58.636-0800 [DEBUG] [org.gradle.launcher.daemon.bootstrap.DaemonMain] Assuming the daemon was started with following jvm opts: [–add-opens, java.base/java.util=ALL-UNNAMED, --add-opens, java.base/java.lang=ALL-UNNAMED, --add-opens, java.base/java.lang.invoke=ALL-UNNAMED, --add-opens, java.prefs/java.util.prefs=ALL-UNNAMED, -Xms4G, -Xmx4G, -Dfile.encoding=UTF-8, -Duser.country=US, -Duser.language=en, -Duser.variant]
2019-11-10T21:46:58.819-0800 [INFO] [org.gradle.launcher.daemon.server.Daemon] start() called on daemon - DefaultDaemonContext[uid=b19cf6d4-1a4e-46c1-a6fe-56312b78e7fe,javaHome=/usr/lib/jvm/java-11-openjdk-amd64,daemonRegistryDir=/Local/jenkins/.gradle/daemon,pid=24081,idleTimeout=10800000,priority=NORMAL,daemonOpts=–add-opens,java.base/java.util=ALL-UNNAMED,–add-opens,java.base/java.lang=ALL-UNNAMED,–add-opens,java.base/java.lang.invoke=ALL-UNNAMED,–add-opens,java.prefs/java.util.prefs=ALL-UNNAMED,-Xms4G,-Xmx4G,-Dfile.encoding=UTF-8,-Duser.country=US,-Duser.language=en,-Duser.variant]
2019-11-10T21:46:58.844-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding IP addresses for network interface veth5437ffa
2019-11-10T21:46:58.845-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Is this a loopback interface? false
2019-11-10T21:46:58.845-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /fe80:0:0:0:1815:c3ff:fef9:8583%veth5437ffa
2019-11-10T21:46:58.846-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding IP addresses for network interface vethc64b768
2019-11-10T21:46:58.846-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Is this a loopback interface? false
2019-11-10T21:46:58.849-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /fe80:0:0:0:d88d:4ff:fe29:aa20%vethc64b768
2019-11-10T21:46:58.849-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding IP addresses for network interface veth05b51fa
2019-11-10T21:46:58.850-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Is this a loopback interface? false
2019-11-10T21:46:58.850-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /fe80:0:0:0:3cce:a3ff:fe8e:7d8e%veth05b51fa
2019-11-10T21:46:58.850-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding IP addresses for network interface veth1089372
2019-11-10T21:46:58.851-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Is this a loopback interface? false
2019-11-10T21:46:58.851-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /fe80:0:0:0:50bb:34ff:fe1a:f0fe%veth1089372
2019-11-10T21:46:58.851-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding IP addresses for network interface vethef4509a
2019-11-10T21:46:58.852-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Is this a loopback interface? false
2019-11-10T21:46:58.852-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /fe80:0:0:0:c00d:abff:fe1b:b8a6%vethef4509a
2019-11-10T21:46:58.852-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding IP addresses for network interface tun0
2019-11-10T21:46:58.853-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Is this a loopback interface? false
2019-11-10T21:46:58.853-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /fe80:0:0:0:d09a:7193:76ba:2e61%tun0
2019-11-10T21:46:58.853-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /192.168.3.5
2019-11-10T21:46:58.853-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding IP addresses for network interface docker0
2019-11-10T21:46:58.854-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Is this a loopback interface? false
2019-11-10T21:46:58.854-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /fe80:0:0:0:42:f5ff:fed7:f988%docker0
2019-11-10T21:46:58.854-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /172.17.0.1
2019-11-10T21:46:58.855-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding IP addresses for network interface eno2
2019-11-10T21:46:58.855-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Is this a loopback interface? false
2019-11-10T21:46:58.855-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /4545:0:0:0:1a66:daff:fe91:6cab%eno2
2019-11-10T21:46:58.855-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /fe80:0:0:0:1a66:daff:fe91:6cab%eno2
2019-11-10T21:46:58.856-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /192.168.0.100
2019-11-10T21:46:58.856-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding IP addresses for network interface eno1
2019-11-10T21:46:58.856-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Is this a loopback interface? false
2019-11-10T21:46:58.856-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /fe80:0:0:0:1a66:daff:fe91:6caa%eno1
2019-11-10T21:46:58.857-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /192.168.1.99
2019-11-10T21:46:58.857-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /192.168.1.164
2019-11-10T21:46:58.857-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /192.168.1.6
2019-11-10T21:46:58.858-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /192.168.1.5
2019-11-10T21:46:58.858-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /192.168.3.5
2019-11-10T21:46:58.858-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding remote address /192.168.1.1
2019-11-10T21:46:58.858-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding IP addresses for network interface lo
2019-11-10T21:46:58.859-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Is this a loopback interface? true
2019-11-10T21:46:58.859-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding loopback address /0:0:0:0:0:0:0:1%lo
2019-11-10T21:46:58.859-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.InetAddresses] Adding loopback address /127.0.0.1
2019-11-10T21:46:58.862-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.TcpIncomingConnector] Listening on [6d595694-d7f4-47f7-a87f-073af162da26 port:45991, addresses:[/0:0:0:0:0:0:0:1%lo, /127.0.0.1]].
2019-11-10T21:46:58.872-0800 [DEBUG] [org.gradle.launcher.daemon.server.Daemon] Daemon starting at: Sun Nov 10 21:46:58 PST 2019, with address: [6d595694-d7f4-47f7-a87f-073af162da26 port:45991, addresses:[/0:0:0:0:0:0:0:1%lo, /127.0.0.1]]
2019-11-10T21:46:58.873-0800 [INFO] [org.gradle.launcher.daemon.server.DaemonRegistryUpdater] Advertising the daemon address to the clients: [6d595694-d7f4-47f7-a87f-073af162da26 port:45991, addresses:[/0:0:0:0:0:0:0:1%lo, /127.0.0.1]]
2019-11-10T21:46:58.873-0800 [DEBUG] [org.gradle.launcher.daemon.server.DaemonRegistryUpdater] Advertised daemon context: DefaultDaemonContext[uid=b19cf6d4-1a4e-46c1-a6fe-56312b78e7fe,javaHome=/usr/lib/jvm/java-11-openjdk-amd64,daemonRegistryDir=/Local/jenkins/.gradle/daemon,pid=24081,idleTimeout=10800000,priority=NORMAL,daemonOpts=–add-opens,java.base/java.util=ALL-UNNAMED,–add-opens,java.base/java.lang=ALL-UNNAMED,–add-opens,java.base/java.lang.invoke=ALL-UNNAMED,–add-opens,java.prefs/java.util.prefs=ALL-UNNAMED,-Xms4G,-Xmx4G,-Dfile.encoding=UTF-8,-Duser.country=US,-Duser.language=en,-Duser.variant]
2019-11-10T21:46:58.875-0800 [DEBUG] [org.gradle.launcher.daemon.registry.PersistentDaemonRegistry] Storing daemon address: [6d595694-d7f4-47f7-a87f-073af162da26 port:45991, addresses:[/0:0:0:0:0:0:0:1%lo, /127.0.0.1]], context: DefaultDaemonContext[uid=b19cf6d4-1a4e-46c1-a6fe-56312b78e7fe,javaHome=/usr/lib/jvm/java-11-openjdk-amd64,daemonRegistryDir=/Local/jenkins/.gradle/daemon,pid=24081,idleTimeout=10800000,priority=NORMAL,daemonOpts=–add-opens,java.base/java.util=ALL-UNNAMED,–add-opens,java.base/java.lang=ALL-UNNAMED,–add-opens,java.base/java.lang.invoke=ALL-UNNAMED,–add-opens,java.prefs/java.util.prefs=ALL-UNNAMED,-Xms4G,-Xmx4G,-Dfile.encoding=UTF-8,-Duser.country=US,-Duser.language=en,-Duser.variant]
2019-11-10T21:46:58.884-0800 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Waiting to acquire exclusive lock on daemon addresses registry.
2019-11-10T21:46:58.887-0800 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Lock acquired on daemon addresses registry.
2019-11-10T21:46:58.892-0800 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Releasing lock on daemon addresses registry.
2019-11-10T21:46:58.893-0800 [LIFECYCLE] [org.gradle.launcher.daemon.server.Daemon] Daemon server started.
2019-11-10T21:46:58.894-0800 [DEBUG] [org.gradle.launcher.daemon.bootstrap.DaemonStartupCommunication] Completed writing the daemon greeting. Closing streams…
2019-11-10T21:46:58.899-0800 [DEBUG] [org.gradle.launcher.daemon.server.Daemon] stopOnExpiration() called on daemon
2019-11-10T21:46:58.900-0800 [DEBUG] [org.gradle.launcher.daemon.server.Daemon] awaitExpiration() called on daemon
2019-11-10T21:46:58.901-0800 [DEBUG] [org.gradle.launcher.daemon.server.DaemonStateCoordinator] daemon is running. Sleeping until state changes.
2019-11-10T21:46:58.902-0800 [ERROR] [org.gradle.internal.remote.internal.inet.TcpIncomingConnector] Cannot accept connection from remote address /192.168.1.1.
2019-11-10T21:47:08.910-0800 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Waiting to acquire shared lock on daemon addresses registry.
2019-11-10T21:47:08.910-0800 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Lock acquired on daemon addresses registry.
2019-11-10T21:47:08.911-0800 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Releasing lock on daemon addresses registry.
2019-11-10T21:47:08.912-0800 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Waiting to acquire shared lock on daemon addresses registry.
2019-11-10T21:47:08.912-0800 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Lock acquired on daemon addresses registry.
2019-11-10T21:47:08.913-0800 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Releasing lock on daemon addresses registry.

The last couple of lines repeat until its done.

$ ./gradlew --daemon clean assemble
Starting a Gradle Daemon, 4 busy Daemons could not be reused, use --status for details
Starting a Gradle Daemon, 5 busy Daemons could not be reused, use --status for details
Starting a Gradle Daemon, 6 busy Daemons could not be reused, use --status for details
Starting a Gradle Daemon, 7 busy Daemons could not be reused, use --status for details

$ ./gradlew --daemon clean assemble --status
PID STATUS INFO
23551 UNKNOWN UNKNOWN
23580 UNKNOWN UNKNOWN
26789 UNKNOWN UNKNOWN
24052 UNKNOWN UNKNOWN
26821 UNKNOWN UNKNOWN
26853 UNKNOWN UNKNOWN
24081 UNKNOWN UNKNOWN

Only Daemons for the current Gradle version are displayed. See https://docs.gradle.org/6.0/userguide/gradle_daemon.html#sec:status

ps just shows those processes:

jenkins 23551 1 1 21:45 ? 00:00:06 /usr/lib/jvm/java-11-openjdk-amd64/bin/java --add-opens java.base/java.util=ALL-UNNAMED --add-opens java.base/java.lang=ALL-UNNAMED --add-opens java.base/java.lang.invoke=ALL-UNNAMED --add-opens java.prefs/java.util.prefs=ALL-UNNAMED -Xms4G -Xmx4G -Dfile.encoding=UTF-8 -Duser.country=US -Duser.language=en -Duser.variant -cp /var/lib/jenkins/.gradle/wrapper/dists/gradle-6.0-all/cra2s42cvogxluqqpvbc5e9xd/gradle-6.0/lib/gradle-launcher-6.0.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 6.0
jenkins 23580 1 1 21:45 ? 00:00:07 /usr/lib/jvm/java-11-openjdk-amd64/bin/java --add-opens java.base/java.util=ALL-UNNAMED --add-opens java.base/java.lang=ALL-UNNAMED --add-opens java.base/java.lang.invoke=ALL-UNNAMED --add-opens java.prefs/java.util.prefs=ALL-UNNAMED -Xms4G -Xmx4G -Dfile.encoding=UTF-8 -Duser.country=US -Duser.language=en -Duser.variant -cp /var/lib/jenkins/.gradle/wrapper/dists/gradle-6.0-all/cra2s42cvogxluqqpvbc5e9xd/gradle-6.0/lib/gradle-launcher-6.0.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 6.0
jenkins 24052 1 1 21:46 ? 00:00:07 /usr/lib/jvm/java-11-openjdk-amd64/bin/java --add-opens java.base/java.util=ALL-UNNAMED --add-opens java.base/java.lang=ALL-UNNAMED --add-opens java.base/java.lang.invoke=ALL-UNNAMED --add-opens java.prefs/java.util.prefs=ALL-UNNAMED -Xms4G -Xmx4G -Dfile.encoding=UTF-8 -Duser.country=US -Duser.language=en -Duser.variant -cp /var/lib/jenkins/.gradle/wrapper/dists/gradle-6.0-all/cra2s42cvogxluqqpvbc5e9xd/gradle-6.0/lib/gradle-launcher-6.0.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 6.0
jenkins 24081 1 1 21:46 ? 00:00:06 /usr/lib/jvm/java-11-openjdk-amd64/bin/java --add-opens java.base/java.util=ALL-UNNAMED --add-opens java.base/java.lang=ALL-UNNAMED --add-opens java.base/java.lang.invoke=ALL-UNNAMED --add-opens java.prefs/java.util.prefs=ALL-UNNAMED -Xms4G -Xmx4G -Dfile.encoding=UTF-8 -Duser.country=US -Duser.language=en -Duser.variant -cp /var/lib/jenkins/.gradle/wrapper/dists/gradle-6.0-all/cra2s42cvogxluqqpvbc5e9xd/gradle-6.0/lib/gradle-launcher-6.0.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 6.0
jenkins 26789 1 9 21:54 ? 00:00:05 /usr/lib/jvm/java-11-openjdk-amd64/bin/java --add-opens java.base/java.util=ALL-UNNAMED --add-opens java.base/java.lang=ALL-UNNAMED --add-opens java.base/java.lang.invoke=ALL-UNNAMED --add-opens java.prefs/java.util.prefs=ALL-UNNAMED -Xms4G -Xmx4G -Dfile.encoding=UTF-8 -Duser.country=US -Duser.language=en -Duser.variant -cp /var/lib/jenkins/.gradle/wrapper/dists/gradle-6.0-all/cra2s42cvogxluqqpvbc5e9xd/gradle-6.0/lib/gradle-launcher-6.0.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 6.0
jenkins 26821 1 9 21:54 ? 00:00:04 /usr/lib/jvm/java-11-openjdk-amd64/bin/java --add-opens java.base/java.util=ALL-UNNAMED --add-opens java.base/java.lang=ALL-UNNAMED --add-opens java.base/java.lang.invoke=ALL-UNNAMED --add-opens java.prefs/java.util.prefs=ALL-UNNAMED -Xms4G -Xmx4G -Dfile.encoding=UTF-8 -Duser.country=US -Duser.language=en -Duser.variant -cp /var/lib/jenkins/.gradle/wrapper/dists/gradle-6.0-all/cra2s42cvogxluqqpvbc5e9xd/gradle-6.0/lib/gradle-launcher-6.0.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 6.0
jenkins 26853 1 11 21:54 ? 00:00:05 /usr/lib/jvm/java-11-openjdk-amd64/bin/java --add-opens java.base/java.util=ALL-UNNAMED --add-opens java.base/java.lang=ALL-UNNAMED --add-opens java.base/java.lang.invoke=ALL-UNNAMED --add-opens java.prefs/java.util.prefs=ALL-UNNAMED -Xms4G -Xmx4G -Dfile.encoding=UTF-8 -Duser.country=US -Duser.language=en -Duser.variant -cp /var/lib/jenkins/.gradle/wrapper/dists/gradle-6.0-all/cra2s42cvogxluqqpvbc5e9xd/gradle-6.0/lib/gradle-launcher-6.0.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 6.0

Adding --debug to the --no-daemon command looks like:

019-11-10T21:57:10.779-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.TcpOutgoingConnector] Trying to connect to address /0:0:0:0:0:0:0:1.
2019-11-10T21:57:10.784-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.TcpOutgoingConnector] Cannot connect to address /0:0:0:0:0:0:0:1, skipping.
2019-11-10T21:57:10.784-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.TcpOutgoingConnector] Trying to connect to address /127.0.0.1.
2019-11-10T21:57:10.785-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.TcpOutgoingConnector] Connected to address /127.0.0.1:38003.
2019-11-10T21:57:10.820-0800 [DEBUG] [org.gradle.launcher.daemon.client.DaemonClient] Connected to daemon DaemonInfo{pid=28076, address=[1fadbe66-bb79-478f-afff-b43881850ffc port:38003, addresses:[/0:0:0:0:0:0:0:1, /127.0.0.1]], state=Busy, lastBusy=1573451830729, context=DefaultDaemonContext[uid=5c15a660-9b10-4cca-870a-4b7122057d2e,javaHome=/usr/lib/jvm/java-11-openjdk-amd64,daemonRegistryDir=/Local/jenkins/.gradle/daemon,pid=28076,idleTimeout=120000,priority=NORMAL,daemonOpts=–add-opens,java.base/java.util=ALL-UNNAMED,–add-opens,java.base/java.lang=ALL-UNNAMED,–add-opens,java.base/java.lang.invoke=ALL-UNNAMED,–add-opens,java.prefs/java.util.prefs=ALL-UNNAMED,-Xms4G,-Xmx4G,-Dfile.encoding=UTF-8,-Duser.country=US,-Duser.language=en,-Duser.variant]}. Dispatching request Build{id=28f3b28b-68e7-4cc5-bbc7-a7d4caad40b0, currentDir=/Local/jenkins/workspace/Synthesis}.
2019-11-10T21:57:10.821-0800 [DEBUG] [org.gradle.launcher.daemon.client.DaemonClientConnection] thread 1: dispatching class org.gradle.launcher.daemon.protocol.Build
2019-11-10T21:57:10.823-0800 [DEBUG] [org.gradle.internal.remote.internal.inet.SocketConnection] Discarding EOFException: java.io.EOFException
2019-11-10T21:57:10.834-0800 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]
2019-11-10T21:57:10.834-0800 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] FAILURE: Build failed with an exception.

With the daemon, there’s no obvious exception or error that I can see.

Anyhow, rolling back to the previous version works – how can this be debugged further? Thanks.

Eric

Nothing has changed recently in regards to starting that same daemon process for all builds. That has been the case for many years. Yes, the recommendation was to not enable the daemon on build servers so that each CI build was completely isolated, but disabling the daemon didn’t mean that the Gradle daemon process was never started. It just meant that it was started and stopped for every build, and not reused for multiple builds.

The communication between the client and daemon process is over network sockets. If I had to guess, it seems like something might have changed in Gradle 6.0 that is not compatible with the networking setup on your build server. However, this is just a guess and I haven’t looked at any of the Gradle 6.0 changes enough to even suggest what you might want to look at. It could also be an edge case with this that would need fixing in Gradle.