[native_assets_builder] Don't pass in the whole environment #988

Job	Run time
build (ubuntu, stable, native_assets_builder, false)	5m 16s
build (ubuntu, stable, native_assets_cli, false)	1m 40s
build (ubuntu, stable, native_toolchain_c, false)	1m 55s
build (ubuntu, dev, native_assets_builder, false)	5m 0s
build (ubuntu, dev, native_assets_cli, false)	2m 12s
build (ubuntu, dev, native_toolchain_c, false)	1m 38s
build (macos, stable, native_assets_builder, false)	5m 12s
build (macos, stable, native_assets_cli, false)	1m 4s
build (macos, stable, native_toolchain_c, false)	1m 47s
build (macos, dev, native_assets_builder, false)	5m 41s
build (macos, dev, native_assets_cli, false)	1m 41s
build (macos, dev, native_toolchain_c, false)	1m 51s
build (windows, stable, native_assets_builder, false)	7m 12s
build (windows, stable, native_assets_cli, false)	2m 9s
build (windows, stable, native_toolchain_c, false)	4m 17s
build (windows, dev, native_assets_builder, false)	7m 6s
build (windows, dev, native_assets_cli, false)	2m 26s
build (windows, dev, native_toolchain_c, false)	4m 16s
coverage-finished	4s
	1h 2m 27s

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