===> Skipping vulnerability checks.
WARNING: No /usr/pkg/pkgdb/pkg-vulnerabilities file found.
WARNING: To fix run: `/usr/sbin/pkg_admin -K /usr/pkg/pkgdb fetch-pkg-vulnerabilities'.
===> Building for lefthk-0.3.2
   Compiling proc-macro2 v1.0.106
   Compiling unicode-ident v1.0.22
   Compiling quote v1.0.44
   Compiling syn v2.0.114
   Compiling libc v0.2.180
error: failed to run custom build command for `libc v0.2.180`

Caused by:
  process didn't exit successfully: `/pbulk/work/wm/lefthk/work/lefthk-0.3.2/target/release/build/libc-aaf8661bbc8c76fc/build-script-build` (exit status: 101)
  --- stdout
  cargo:rerun-if-changed=build.rs

  --- stderr

  thread 'main' (14947) panicked at /pbulk/work/wm/lefthk/work/vendor/libc-0.2.180/build.rs:209:31:
  Failed to get rustc version: Os { code: 2, kind: NotFound, message: "No such file or directory" }
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
*** Error code 101

Stop.
make[1]: stopped in /usr/pkgsrc/wm/lefthk
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/wm/lefthk