error: failed to run custom build command for ring v0.16.20

[SsebowaDisan]

Unable to compile shadowsocks-android project. It gives me an failed to run command ring
Compiling on Ubuntu: Ubuntu 18.04.5 LTS
error: failed to run custom build command for ring v0.16.20

Caused by:
process didn't exit successfully: /home/stemeye/Desktop/vpn/shadowsocks-android/core/src/main/rust/shadowsocks-rust/target/debug/build/ring-bbabc15ac3b86348/build-script-build (exit status: 101)
--- stdout
OPT_LEVEL = Some("0")
TARGET = Some("armv7-linux-androideabi")
HOST = Some("x86_64-unknown-linux-gnu")
CC_armv7-linux-androideabi = None
CC_armv7_linux_androideabi = None
TARGET_CC = None
CC = None
CFLAGS_armv7-linux-androideabi = None
CFLAGS_armv7_linux_androideabi = None
TARGET_CFLAGS = None
CFLAGS = None
CRATE_CC_NO_DEFAULTS = None
DEBUG = Some("true")

--- stderr
running "arm-linux-androideabi-clang" "-O0" "-DANDROID" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "-I" "include" "-Wall" "-Wextra" "-pedantic" "-pedantic-errors" "-Wall" "-Wextra" "-Wcast-align" "-Wcast-qual" "-Wconversion" "-Wenum-compare" "-Wfloat-equal" "-Wformat=2" "-Winline" "-Winvalid-pch" "-Wmissing-field-initializers" "-Wmissing-include-dirs" "-Wredundant-decls" "-Wshadow" "-Wsign-compare" "-Wsign-conversion" "-Wundef" "-Wuninitialized" "-Wwrite-strings" "-fno-strict-aliasing" "-fvisibility=hidden" "-fstack-protector" "-g3" "-DNDEBUG" "-c" "-o/home/stemeye/Desktop/vpn/shadowsocks-android/core/src/main/rust/shadowsocks-rust/target/armv7-linux-androideabi/debug/build/ring-c9db317f4f72d1f9/out/aesv8-armx-linux32.o" "/home/stemeye/.cargo/registry/src/github.com-1ecc6299db9ec823/ring-0.16.20/pregenerated/aesv8-armx-linux32.S"
thread 'main' panicked at 'failed to execute ["arm-linux-androideabi-clang" "-O0" "-DANDROID" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "-I" "include" "-Wall" "-Wextra" "-pedantic" "-pedantic-errors" "-Wall" "-Wextra" "-Wcast-align" "-Wcast-qual" "-Wconversion" "-Wenum-compare" "-Wfloat-equal" "-Wformat=2" "-Winline" "-Winvalid-pch" "-Wmissing-field-initializers" "-Wmissing-include-dirs" "-Wredundant-decls" "-Wshadow" "-Wsign-compare" "-Wsign-conversion" "-Wundef" "-Wuninitialized" "-Wwrite-strings" "-fno-strict-aliasing" "-fvisibility=hidden" "-fstack-protector" "-g3" "-DNDEBUG" "-c" "-o/home/stemeye/Desktop/vpn/shadowsocks-android/core/src/main/rust/shadowsocks-rust/target/armv7-linux-androideabi/debug/build/ring-c9db317f4f72d1f9/out/aesv8-armx-linux32.o" "/home/stemeye/.cargo/registry/src/github.com-1ecc6299db9ec823/ring-0.16.20/pregenerated/aesv8-armx-linux32.S"]: No such file or directory (os error 2)', /home/stemeye/.cargo/registry/src/github.com-1ecc6299db9ec823/ring-0.16.20/build.rs:653:9
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace
warning: build failed, waiting for other jobs to finish...
failed to run custom build command for ring v0.16.20

Caused by:

build failed, waiting for other jobs to finish...

error: build failed

Task :core:cargoBuildArm FAILED
build failed

[IkramulMurad]

Unable to compile shadowsocks-android project. It gives me an failed to run command ring Compiling on Ubuntu: Ubuntu 18.04.5 LTS error: failed to run custom build command for ring v0.16.20

Caused by: process didn't exit successfully: /home/stemeye/Desktop/vpn/shadowsocks-android/core/src/main/rust/shadowsocks-rust/target/debug/build/ring-bbabc15ac3b86348/build-script-build (exit status: 101) --- stdout OPT_LEVEL = Some("0") TARGET = Some("armv7-linux-androideabi") HOST = Some("x86_64-unknown-linux-gnu") CC_armv7-linux-androideabi = None CC_armv7_linux_androideabi = None TARGET_CC = None CC = None CFLAGS_armv7-linux-androideabi = None CFLAGS_armv7_linux_androideabi = None TARGET_CFLAGS = None CFLAGS = None CRATE_CC_NO_DEFAULTS = None DEBUG = Some("true")

--- stderr running "arm-linux-androideabi-clang" "-O0" "-DANDROID" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "-I" "include" "-Wall" "-Wextra" "-pedantic" "-pedantic-errors" "-Wall" "-Wextra" "-Wcast-align" "-Wcast-qual" "-Wconversion" "-Wenum-compare" "-Wfloat-equal" "-Wformat=2" "-Winline" "-Winvalid-pch" "-Wmissing-field-initializers" "-Wmissing-include-dirs" "-Wredundant-decls" "-Wshadow" "-Wsign-compare" "-Wsign-conversion" "-Wundef" "-Wuninitialized" "-Wwrite-strings" "-fno-strict-aliasing" "-fvisibility=hidden" "-fstack-protector" "-g3" "-DNDEBUG" "-c" "-o/home/stemeye/Desktop/vpn/shadowsocks-android/core/src/main/rust/shadowsocks-rust/target/armv7-linux-androideabi/debug/build/ring-c9db317f4f72d1f9/out/aesv8-armx-linux32.o" "/home/stemeye/.cargo/registry/src/github.com-1ecc6299db9ec823/ring-0.16.20/pregenerated/aesv8-armx-linux32.S" thread 'main' panicked at 'failed to execute ["arm-linux-androideabi-clang" "-O0" "-DANDROID" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "-I" "include" "-Wall" "-Wextra" "-pedantic" "-pedantic-errors" "-Wall" "-Wextra" "-Wcast-align" "-Wcast-qual" "-Wconversion" "-Wenum-compare" "-Wfloat-equal" "-Wformat=2" "-Winline" "-Winvalid-pch" "-Wmissing-field-initializers" "-Wmissing-include-dirs" "-Wredundant-decls" "-Wshadow" "-Wsign-compare" "-Wsign-conversion" "-Wundef" "-Wuninitialized" "-Wwrite-strings" "-fno-strict-aliasing" "-fvisibility=hidden" "-fstack-protector" "-g3" "-DNDEBUG" "-c" "-o/home/stemeye/Desktop/vpn/shadowsocks-android/core/src/main/rust/shadowsocks-rust/target/armv7-linux-androideabi/debug/build/ring-c9db317f4f72d1f9/out/aesv8-armx-linux32.o" "/home/stemeye/.cargo/registry/src/github.com-1ecc6299db9ec823/ring-0.16.20/pregenerated/aesv8-armx-linux32.S"]: No such file or directory (os error 2)', /home/stemeye/.cargo/registry/src/github.com-1ecc6299db9ec823/ring-0.16.20/build.rs:653:9 note: run with RUST_BACKTRACE=1 environment variable to display a backtrace warning: build failed, waiting for other jobs to finish... failed to run custom build command for ring v0.16.20

Caused by:

build failed, waiting for other jobs to finish...

error: build failed

Task :core:cargoBuildArm FAILED
build failed

I'm also getting this error.
Have you solved this error?
If so, could you please say?