Building stage0 tool unstable-book-gen (sparcv9-sun-solaris)
warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
package:   /builds/psumbera/RUST/solaris-userland/components/rust/rustc/rustc-1.62.0-src/src/tools/rls/racer/Cargo.toml
workspace: /builds/psumbera/RUST/solaris-userland/components/rust/rustc/rustc-1.62.0-src/Cargo.toml
error: failed to run `rustc` to learn about target-specific information

Caused by:
  process didn't exit successfully: `/builds/psumbera/RUST/solaris-userland/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustc - --crate-name ___ --print=file-names --cfg=bootstrap -Csymbol-mangling-version=v0 -Zmacro-backtrace -Clink-args=-Wl,-z,origin '-Clink-args=-Wl,-rpath,$ORIGIN/../lib' -Csplit-debuginfo=off -Ztls-model=initial-exec --target sparcv9-sun-solaris --crate-type bin --crate-type rlib --crate-type dylib --crate-type cdylib --crate-type staticlib --crate-type proc-macro --print=sysroot --print=cfg` (exit status: 1)
  --- stderr
  error: `-Csplit-debuginfo` is unstable on this platform

Build completed unsuccessfully in 0:00:03