rust compile error

bash.sh

cp: x86_64-unknown-linux-gnu/stage1/lib/libstd.so
/home/prudhvi/code/rust/src/libnative/lib.rs:1:0: 1:0 error: can't find crate for `std`
/home/prudhvi/code/rust/src/libnative/lib.rs:1 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
                                               ^
task 'rustc' failed at 'explicit failure', /home/rustbuild/src/rust-buildbot/slave/snap3-linux/build/src/libsyntax/diagnostic.rs:76
task '<main>' failed at 'explicit failure', /home/rustbuild/src/rust-buildbot/slave/snap3-linux/build/src/librustc/lib.rs:441
make: *** [x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libnative.so] Error 101
make: *** Waiting for unfinished jobs....
/home/prudhvi/code/rust/src/libgreen/lib.rs:1:0: 1:0 error: can't find crate for `std`
/home/prudhvi/code/rust/src/libgreen/lib.rs:1 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
                                              ^
task 'rustc' failed at 'explicit failure', /home/rustbuild/src/rust-buildbot/slave/snap3-linux/build/src/libsyntax/diagnostic.rs:76
task '<main>' failed at 'explicit failure', /home/rustbuild/src/rust-buildbot/slave/snap3-linux/build/src/librustc/lib.rs:441
make: *** [x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgreen.so] Error 101
/home/prudhvi/code/rust/src/librustuv/lib.rs:1:0: 1:0 error: can't find crate for `std`
/home/prudhvi/code/rust/src/librustuv/lib.rs:1 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
                                               ^
task 'rustc' failed at 'explicit failure', /home/rustbuild/src/rust-buildbot/slave/snap3-linux/build/src/libsyntax/diagnostic.rs:76
task '<main>' failed at 'explicit failure', /home/rustbuild/src/rust-buildbot/slave/snap3-linux/build/src/librustc/lib.rs:441
make: *** [x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustuv.so] Error 101