Build error in Ubuntu

[JeremyLi]

make[1]: Entering directory '/home/jeremyli/codes/l4/rustboot/arch/x86'
/home/jeremyli/codes/rust/x86_64-unknown-linux-gnu/stage1/bin/rustc --target i686-unknown-linux-gnu -Z no-landing-pads --opt-level=2 -C lto -L ./boot --out-dir ./boot --dep-info --emit=bc ../../common/lib.rs
/home/jeremyli/codes/rust/x86_64-unknown-linux-gnu/stage1/bin/rustc: symbol lookup error: /home/jeremyli/codes/rust/x86_64-unknown-linux-gnu/stage1/bin/rustc: undefined symbol: _ZN2rt10lang_start20h02b779da7d64ff901SwE
../../common/Makefile:39: recipe for target 'boot/main.bc' failed
make[1]: *** [boot/main.bc] Error 127
make[1]: Leaving directory '/home/jeremyli/codes/l4/rustboot/arch/x86'
Makefile:20: recipe for target 'all' failed
make: *** [all] Error 2
how can i resolve this error?