[BUG] fails to build on android termux about emplace HOT 6 CLOSED

cargo install --git https://github.com/tversteeg/emplace
    Updating git repository `https://github.com/tversteeg/emplace`
  Installing emplace v1.5.2 (https://github.com/tversteeg/emplace#34c0be6b)
    Updating crates.io index
  Downloaded time v0.3.34
  Downloaded anstyle v1.0.6
  Downloaded backtrace v0.3.69
  Downloaded dialoguer v0.11.0
  Downloaded rustix v0.38.31
  Downloaded strum v0.26.1
  Downloaded libc v0.2.153
  Downloaded toml_edit v0.22.4
  Downloaded serde v1.0.196
  Downloaded proc-macro2 v1.0.78
  Downloaded addr2line v0.21.0
  Downloaded enum_dispatch v0.3.12
  Downloaded gimli v0.28.1
  Downloaded rustc-demangle v0.1.23
  Downloaded miniz_oxide v0.7.2
  Downloaded console v0.15.8
  Downloaded serde_derive v1.0.196
  Downloaded ron v0.8.1
  Downloaded git-version v0.3.9
  Downloaded indexmap v2.2.2
  Downloaded itertools v0.12.1
  Downloaded object v0.32.2
  Downloaded shell-escape v0.1.5
  Downloaded num-conv v0.1.0
  Downloaded zeroize v1.7.0
  Downloaded time-macros v0.2.17
  Downloaded toml v0.8.10
  Downloaded tempfile v3.10.0
  Downloaded strum_macros v0.26.1
  Downloaded bugreport v0.5.0
  Downloaded sys-info v0.9.1
  Downloaded winnow v0.5.39
  Downloaded git-version-macro v0.3.9
  Downloaded clap_complete v4.4.10
  Downloaded fsio v0.4.0
  Downloaded run_script v0.10.1
  Downloaded 36 crates (5.4 MB) in 1.15s (largest was `fsio` at 1.1 MB)
   Compiling libc v0.2.153
   Compiling proc-macro2 v1.0.78
   Compiling unicode-ident v1.0.12
   Compiling serde v1.0.196
   Compiling cfg-if v1.0.0
   Compiling utf8parse v0.2.1
   Compiling anstyle v1.0.6
   Compiling anstyle-query v1.0.2
   Compiling anstyle-parse v0.2.3
   Compiling rustix v0.38.31
   Compiling ppv-lite86 v0.2.17
   Compiling colorchoice v1.0.0
   Compiling memchr v2.7.1
   Compiling strsim v0.10.0
   Compiling gimli v0.28.1
   Compiling anstream v0.6.11
   Compiling powerfmt v0.2.0
   Compiling num-conv v0.1.0
   Compiling rustversion v1.0.14
   Compiling thiserror v1.0.56
   Compiling quote v1.0.35
   Compiling linux-raw-sys v0.4.13
   Compiling hashbrown v0.14.3
   Compiling syn v2.0.48
   Compiling getrandom v0.2.12
   Compiling errno v0.3.8
   Compiling cc v1.0.83
   Compiling rand_core v0.6.4
   Compiling lazy_static v1.4.0
   Compiling adler v1.0.2
   Compiling time-core v0.1.2
   Compiling clap_lex v0.6.0
   Compiling equivalent v1.0.1
   Compiling rand_chacha v0.3.1
   Compiling time-macros v0.2.17
   Compiling clap_builder v4.4.18
   Compiling indexmap v2.2.2
   Compiling rand v0.8.5
   Compiling miniz_oxide v0.7.2
   Compiling sys-info v0.9.1
The following warnings were emitted during compilation:

warning: sys-info@0.9.1: c/linux.c:96:11: error: call to undeclared library function 'index' with type 'char *(const char *, int)'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
warning: sys-info@0.9.1:    96 |                 mount = index(procline, ' ');
warning: sys-info@0.9.1:       |                         ^
warning: sys-info@0.9.1: c/linux.c:96:11: note: include the header <strings.h> or explicitly provide a declaration for 'index'
warning: sys-info@0.9.1: 1 error generated.

error: failed to run custom build command for `sys-info v0.9.1`

Caused by:
  process didn't exit successfully: `/data/data/com.termux/files/usr/tmp/cargo-installobFdp8/release/build/sys-info-b56fdbfd91dce562/build-script-build` (exit status: 1)
  --- stdout
  TARGET = Some("aarch64-linux-android")
  OPT_LEVEL = Some("3")
  HOST = Some("aarch64-linux-android")
  cargo:rerun-if-env-changed=CC_aarch64-linux-android
  CC_aarch64-linux-android = None
  cargo:rerun-if-env-changed=CC_aarch64_linux_android
  CC_aarch64_linux_android = None
  cargo:rerun-if-env-changed=HOST_CC
  HOST_CC = None
  cargo:rerun-if-env-changed=CC
  CC = None
  cargo:rerun-if-env-changed=CRATE_CC_NO_DEFAULTS
  CRATE_CC_NO_DEFAULTS = None
  DEBUG = Some("false")
  CARGO_CFG_TARGET_FEATURE = Some("neon")
  cargo:rerun-if-env-changed=CFLAGS_aarch64-linux-android
  CFLAGS_aarch64-linux-android = None
  cargo:rerun-if-env-changed=CFLAGS_aarch64_linux_android
  CFLAGS_aarch64_linux_android = None
  cargo:rerun-if-env-changed=HOST_CFLAGS
  HOST_CFLAGS = None
  cargo:rerun-if-env-changed=CFLAGS
  CFLAGS = None
  running: "aarch64-linux-android-gcc" "-O3" "-ffunction-sections" "-fdata-sections" "-fPIC" "-Wall" "-Wextra" "-o" "/data/data/com.termux/files/usr/tmp/cargo-installobFdp8/release/build/sys-info-0e8ad214f95feeb6/out/c/linux.o" "-c" "c/linux.c"
  cargo:warning=c/linux.c:96:11: error: call to undeclared library function 'index' with type 'char *(const char *, int)'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]

  cargo:warning=   96 |                 mount = index(procline, ' ');

  cargo:warning=      |                         ^

  cargo:warning=c/linux.c:96:11: note: include the header <strings.h> or explicitly provide a declaration for 'index'

  cargo:warning=1 error generated.

  exit status: 1

  --- stderr


  error occurred: Command "aarch64-linux-android-gcc" "-O3" "-ffunction-sections" "-fdata-sections" "-fPIC" "-Wall" "-Wextra" "-o" "/data/data/com.termux/files/usr/tmp/cargo-installobFdp8/release/build/sys-info-0e8ad214f95feeb6/out/c/linux.o" "-c" "c/linux.c" with args "aarch64-linux-android-gcc" did not execute successfully (status code exit status: 1).


warning: build failed, waiting for other jobs to finish...
error: failed to compile `emplace v1.5.2 (https://github.com/tversteeg/emplace#34c0be6b)`, intermediate artifacts can be found at `/data/data/com.termux/files/usr/tmp/cargo-installobFdp8`.
To reuse those artifacts with a future compilation, set the environment variable `CARGO_TARGET_DIR` to that path.