decompile Mc is stuck at about 50% and then it says it failed

i've made gradlew.properties file:

org.gradle.jvmargs=-Xmx1700m

full error

This mapping 'stable_20' was designed for MC 1.8.8! Use at your own peril.
#################################################
         ForgeGradle 2.1-SNAPSHOT-8d6480f
  https://github.com/MinecraftForge/ForgeGradle
#################################################
               Powered by MCP unknown
             http://modcoderpack.com
         by: Searge, ProfMobius, Fesh0r,
         R4wk, ZeuX, IngisKahn, bspkrs
#################################################
:deobfCompileDummyTask
:deobfProvidedDummyTask
:getVersionJson
:extractUserdev UP-TO-DATE
:extractDependencyATs SKIPPED
:extractMcpData SKIPPED
:extractMcpMappings SKIPPED
:genSrgs SKIPPED
:downloadClient SKIPPED
:downloadServer SKIPPED
:splitServerJar SKIPPED
:mergeJars SKIPPED
:deobfMcSRG SKIPPED
:decompileMc FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':decompileMc'.
> Java heap space

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

 

ForgeGradle 2 and Minecraft 1.8 are not supported any more.

Update to a modern version to receive support.

4 minutes ago, Curle said:

ForgeGradle 2 and Minecraft 1.8 are not supported any more.

Update to a modern version to receive support.

so i cant make any 1.8.9 mods?

5 minutes ago, tomekcz said:

so i cant make any 1.8.9 mods?

You can, but you won't get help here.

You can, but we can't help you do so. Because we no longer know how. You're either going to have to figure things out for yourself or find help elsewhere.

 

For the same reason Mojang no longer accepts bug reports and issues patches for 1.8.9, Forge no longer maintains a knowledge base for 1.8.9

26 minutes ago, Draco18s said:

You can, but we can't help you do so. Because we no longer know how. You're either going to have to figure things out for yourself or find help elsewhere.

 

For the same reason Mojang no longer accepts bug reports and issues patches for 1.8.9, Forge no longer maintains a knowledge base for 1.8.9

many people still make mods for 1.8.9 like hypixel skyblock addons  for hypixel skyblock

Cool.

We here at Forge don't care.

i've switched to 1.15.2

Downloading https://services.gradle.org/distributions/gradle-4.10.3-bin.zip
..........................................................................
Unzipping C:\Users\Tomas\.gradle\wrapper\dists\gradle-4.10.3-bin\31t79e2qsceia4mkbojplrgx\gradle-4.10.3-bin.zip to C:\Users\Tomas\.gradle\wrapper\dists\gradle-4.10.3-bin\31t79e2qsceia4mkbojplrgx

Welcome to Gradle 4.10.3!

Here are the highlights of this release:
 - Incremental Java compilation by default
 - Periodic Gradle caches cleanup
 - Gradle Kotlin DSL 1.0-RC6
 - Nested included builds
 - SNAPSHOT plugin versions in the `plugins {}` block

For more details see https://docs.gradle.org/4.10.3/release-notes.html

To honour the JVM settings for this build a new JVM will be forked. Please consider using the daemon: https://docs.gradle.org/4.10.3/userguide/gradle_daemon.html.

FAILURE: Build failed with an exception.

* What went wrong:
Unable to start the daemon process.
This problem might be caused by incorrect configuration of the daemon.
For example, an unrecognized jvm option is used.
Please refer to the user guide chapter on the daemon at https://docs.gradle.org/4.10.3/userguide/gradle_daemon.html
Please read the following process output to find out more:
-----------------------
Error occurred during initialization of VM
Could not reserve enough space for 3145728KB object heap


* 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

 

Make a new topic.

 

ok ill make it