# Elasticsearch build failure
**URL:** https://discuss.elastic.co/t/elasticsearch-build-failure/276965
**Category:** Elasticsearch
**Created:** [June 24, 2021, 5:08pm UTC](https://discuss.elastic.co/t/elasticsearch-build-failure/276965 "2021-06-24T17:08:58Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@TheHunter1](https://discuss.elastic.co/u/TheHunter1)
#### Post date: [June 24, 2021, 5:08pm UTC](https://discuss.elastic.co/t/elasticsearch-build-failure/276965/1 "2021-06-24T17:08:58Z")
Hello,
I was running ELK from source, and today I run "git pull" and tried to build again, but when I run "./gradlew assemble" I am getting these errors :
```auto
FAILURE: Build failed with an exception.
* What went wrong:
A problem occurred configuring root project 'elasticsearch'.
> Could not resolve all artifacts for configuration ':classpath'.
> Could not resolve project :build-tools-internal.
Required by:
project :
> No matching variant of project :build-tools-internal was found. The consumer was configured to find a runtime of a library compatible with Java 15, packaged as a jar, and its dependencies declared externally, as well as attribute 'org.gradle.plugin.api-version' with value '7.1' but:
- Variant 'apiElements' capability org.elasticsearch.gradle:build-tools-internal:8.0.0-SNAPSHOT declares a library, packaged as a jar, and its dependencies declared externally:
- Incompatible because this component declares an API of a component compatible with Java 16 and the consumer needed a runtime of a component compatible with Java 15
- Other compatible attribute:
- Doesn't say anything about org.gradle.plugin.api-version (required '7.1')
- Variant 'runtimeElements' capability org.elasticsearch.gradle:build-tools-internal:8.0.0-SNAPSHOT declares a runtime of a library, packaged as a jar, and its dependencies declared externally:
- Incompatible because this component declares a component compatible with Java 16 and the consumer needed a component compatible with Java 15
- Other compatible attribute:
- Doesn't say anything about org.gradle.plugin.api-version (required '7.1')
* 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
BUILD FAILED in 54s
4 actionable tasks: 4 executed
```
I tried with both Java 15 and Java 16 and still getting the same error
Any help please !
Best regards
---
### Author:  [@mayya](https://discuss.elastic.co/u/mayya)
#### Post date: [June 24, 2021, 10:14pm UTC](https://discuss.elastic.co/t/elasticsearch-build-failure/276965/2 "2021-06-24T22:14:31Z")
You should use Java 16 GA version. Are you by chance using Java 16 EA version?
---
### Author:  [@TheHunter1](https://discuss.elastic.co/u/TheHunter1)
#### Post date: [June 25, 2021, 9:43am UTC](https://discuss.elastic.co/t/elasticsearch-build-failure/276965/3 "2021-06-25T09:43:28Z")
Thanks for your answer @mayya ,
Tthe error is cleared now, but I had a new errors when I try to build it :
```auto
2: Task failed with an exception.
-----------
* What went wrong:
Deprecated Gradle features were used in this build, making it incompatible with Gradle 8.0
* 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
BUILD FAILED in 5s
19 actionable tasks: 19 up-to-date
```
and when I try `./gradlew clean`
```auto
FAILURE: Build completed with 2 failures.
1: Task failed with an exception.
-----------
* What went wrong:
Execution failed for task ':distribution:archives:linux-tar:clean'.
> java.io.IOException: Unable to delete directory '/home/ELK-8/elasticsearch/distribution/archives/linux-tar/build'
Failed to delete some children. This might happen because a process has files open or has its working directory set in the target directory.
- /home/ELK-8/elasticsearch/distribution/archives/linux-tar/build/install/elasticsearch-8.0.0-SNAPSHOT/plugins/mapper-size/LICENSE.txt
- /home/ELK-8/elasticsearch/distribution/archives/linux-tar/build/install/elasticsearch-8.0.0-SNAPSHOT/plugins/mapper-size/NOTICE.txt
- /home/ELK-8/elasticsearch/distribution/archives/linux-tar/build/install/elasticsearch-8.0.0-SNAPSHOT/plugins/mapper-size/plugin-descriptor.properties
- /home/ELK-8/elasticsearch/distribution/archives/linux-tar/build/install/elasticsearch-8.0.0-SNAPSHOT/plugins/mapper-size/mapper-size-8.0.0-SNAPSHOT.jar
- /home/ELK-8/elasticsearch/distribution/archives/linux-tar/build/install/elasticsearch-8.0.0-SNAPSHOT/plugins/mapper-size
- /home/ELK-8/elasticsearch/distribution/archives/linux-tar/build/install/elasticsearch-8.0.0-SNAPSHOT/plugins
- /home/ELK-8/elasticsearch/distribution/archives/linux-tar/build/install/elasticsearch-8.0.0-SNAPSHOT
- /home/ELK-8/elasticsearch/distribution/archives/linux-tar/build/install
* 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.
==============================================================================
2: Task failed with an exception.
-----------
* What went wrong:
Deprecated Gradle features were used in this build, making it incompatible with Gradle 8.0
* 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
```
---
### Author:  [@mayya](https://discuss.elastic.co/u/mayya)
#### Post date: [June 25, 2021, 6:55pm UTC](https://discuss.elastic.co/t/elasticsearch-build-failure/276965/4 "2021-06-25T18:55:57Z")
Just wanted to let you know that the Gradle version I am using is Gradle 7.1, and the build process works for me.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 23, 2021, 6:56pm UTC](https://discuss.elastic.co/t/elasticsearch-build-failure/276965/5 "2021-07-23T18:56:00Z")
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