running build
running build_py
creating build
creating build/lib.linux-riscv64-3.10
creating build/lib.linux-riscv64-3.10/cmsis_pack_manager
copying cmsis_pack_manager/pack_manager.py -> build/lib.linux-riscv64-3.10/cmsis_pack_manager
copying cmsis_pack_manager/_version.py -> build/lib.linux-riscv64-3.10/cmsis_pack_manager
copying cmsis_pack_manager/_native__ffi.py -> build/lib.linux-riscv64-3.10/cmsis_pack_manager
copying cmsis_pack_manager/_native.py -> build/lib.linux-riscv64-3.10/cmsis_pack_manager
copying cmsis_pack_manager/__init__.py -> build/lib.linux-riscv64-3.10/cmsis_pack_manager
    Updating crates.io index
 Downloading crates ...
  Downloaded addr2line v0.17.0
  Downloaded url v2.2.2
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  Downloaded unicode-xid v0.2.2
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  Downloaded rustc-demangle v0.1.21
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  Downloaded serde_json v1.0.79
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  Downloaded backtrace v0.3.64
  Downloaded serde_urlencoded v0.5.5
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  Downloaded ring v0.16.20
   Compiling autocfg v1.1.0
   Compiling libc v0.2.117
   Compiling cfg-if v1.0.0
   Compiling cfg-if v0.1.10
   Compiling futures v0.1.31
   Compiling log v0.4.14
   Compiling lazy_static v1.4.0
   Compiling byteorder v1.4.3
   Compiling either v1.6.1
   Compiling maybe-uninit v2.0.0
   Compiling semver-parser v0.7.0
   Compiling cc v1.0.72
   Compiling scopeguard v1.1.0
   Compiling slab v0.4.5
   Compiling proc-macro2 v1.0.36
   Compiling fnv v1.0.7
   Compiling unicode-xid v0.2.2
   Compiling syn v1.0.86
   Compiling tinyvec_macros v0.1.0
   Compiling rand_core v0.4.2
   Compiling matches v0.1.9
   Compiling memchr v2.4.1
   Compiling version_check v0.9.4
   Compiling untrusted v0.7.1
   Compiling once_cell v1.9.0
   Compiling unicode-bidi v0.3.7
   Compiling serde_derive v1.0.136
   Compiling itoa v0.4.8
   Compiling serde v1.0.136
   Compiling adler v1.0.2
   Compiling failure_derive v0.1.8
   Compiling percent-encoding v2.1.0
   Compiling percent-encoding v1.0.1
   Compiling gimli v0.26.1
   Compiling httparse v1.6.0
   Compiling hashbrown v0.11.2
   Compiling serde_json v1.0.79
   Compiling rustc-demangle v0.1.21
   Compiling try-lock v0.2.3
   Compiling crc32fast v1.3.2
   Compiling ryu v1.0.9
   Compiling encoding_rs v0.8.30
   Compiling itoa v1.0.1
   Compiling mime v0.3.16
   Compiling crossbeam-utils v0.8.7
   Compiling dtoa v0.4.8
   Compiling scoped-tls v0.1.2
   Compiling termcolor v1.1.2
   Compiling unicode-width v0.1.9
   Compiling ansi_term v0.12.1
   Compiling vec_map v0.8.2
   Compiling bitflags v1.3.2
   Compiling strsim v0.8.0
   Compiling lock_api v0.3.4
   Compiling tinyvec v1.5.1
   Compiling try_from v0.3.2
   Compiling semver v0.9.0
   Compiling autocfg v0.1.8
   Compiling rand_core v0.3.1
   Compiling rand_jitter v0.1.4
   Compiling form_urlencoded v1.0.1
   Compiling textwrap v0.11.0
   Compiling base64 v0.10.1
   Compiling rand_xorshift v0.1.1
   Compiling rand_isaac v0.1.1
   Compiling rand_hc v0.1.0
   Compiling unicase v2.6.0
   Compiling rustc_version v0.2.3
   Compiling smallvec v0.6.14
   Compiling crossbeam-utils v0.7.2
   Compiling memoffset v0.5.6
   Compiling crossbeam-epoch v0.8.2
   Compiling miniz_oxide v0.4.4
   Compiling indexmap v1.8.0
   Compiling rand_pcg v0.1.2
   Compiling rand_chacha v0.1.1
   Compiling rand v0.6.5
   Compiling num-traits v0.2.14
   Compiling num-integer v0.1.44
   Compiling ring v0.16.20
   Compiling backtrace v0.3.64
   Compiling object v0.27.1
   Compiling quick-xml v0.17.2
   Compiling parking_lot_core v0.6.2
   Compiling parking_lot v0.9.0
   Compiling hyper v0.12.36
   Compiling quote v1.0.15
   Compiling crossbeam-channel v0.5.2
   Compiling iovec v0.1.4
   Compiling num_cpus v1.13.1
   Compiling net2 v0.2.37
   Compiling time v0.1.44
   Compiling rand_os v0.1.3
   Compiling dirs-sys v0.3.6
   Compiling atty v0.2.14
   Compiling mime_guess v2.0.3
   Compiling unicode-normalization v0.1.19
   Compiling clap v2.34.0
   Compiling bytes v0.4.12
   Compiling minidom v0.12.0
error: failed to run custom build command for `ring v0.16.20`

Caused by:
  process didn't exit successfully: `/build/python-cmsis-pack-manager/src/cmsis-pack-manager-0.4.0/rust/target/release/build/ring-8b4a66cb22bd7782/build-script-build` (exit status: 101)
  --- stderr
  thread 'main' panicked at 'called `Option::unwrap()` on a `None` value', /build/.cargo/registry/src/github.com-1ecc6299db9ec823/ring-0.16.20/build.rs:358:10
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
warning: build failed, waiting for other jobs to finish...
error: build failed
==> ERROR: A failure occurred in build().
    Aborting...