编译出现outspace问题

编译代码出现：
Traceback (most recent call last):
File "./build/tools/releasetools/build_image.py", line 761, in
main(sys.argv[1:])
File "./build/tools/releasetools/build_image.py", line 754, in main
if not BuildImage(in_dir, image_properties, out_file, target_out):
File "./build/tools/releasetools/build_image.py", line 568, in BuildImage
if not MakeVerityEnabledImage(out_file, verity_fec_supported, prop_dict):
File "./build/tools/releasetools/build_image.py", line 344, in MakeVerityEnabledImage
assert padding_size >= 0
AssertionError
Out of space? the tree size of out/target/product/gordon_peak/system is (MB):
995 out/target/product/gordon_peak/system
The max is 3072 MB.
ninja: build stopped: subcommand failed.
make: *** [ninja_wrapper] Error 1

请问怎么解决？