redox failed build log (#825)

mkdir -p build/kernel
RUSTC="./krustc.sh" RUSTDOC="./krustdoc.sh" cargo rustc --manifest-path rust/src/libcollections/Cargo.toml --target x86_64-unknown-none --release -- -C soft-float -o build/kernel/libcollections.rlib
   Compiling core v0.0.0 (file:///host/data/dermetfan/development/workspaces/dermetfan/redox/rust/src/libcore)
error[E0412]: unresolved type `i128`
  --> rust/src/libcore/num/i128.rs:17:19
   |
17 | int_module! { i128, #[unstable(feature = "i128", issue="35118")] }
   | ------------------^-----------------------------------------------
   | |                 |
   | |                 no resolution found
   | in this macro invocation

error[E0433]: failed to resolve. Use of undeclared type or module `i128`
  --> rust/src/libcore/num/i128.rs:17:19
   |
17 |   int_module! { i128, #[unstable(feature = "i128", issue="35118")] }
   |   ------------------^-----------------------------------------------
   |  _|_________________|
   | | |                 starting here...
   | | in this macro invocation
18 | |
   | |_________________________________________^ ...ending here: Use of undeclared type or module `i128`

error[E0412]: unresolved type `i128`
  --> rust/src/libcore/num/i128.rs:17:19
   |
17 | int_module! { i128, #[unstable(feature = "i128", issue="35118")] }
   | ------------------^-----------------------------------------------
   | |                 |
   | |                 no resolution found
   | in this macro invocation

error[E0433]: failed to resolve. Use of undeclared type or module `i128`
  --> rust/src/libcore/num/i128.rs:17:19
   |
17 |   int_module! { i128, #[unstable(feature = "i128", issue="35118")] }
   |   ------------------^-----------------------------------------------
   |  _|_________________|
   | | |                 starting here...
   | | in this macro invocation
18 | |
19 | |
20 | |
21 | |
   | |_________________________________________^ ...ending here: Use of undeclared type or module `i128`

error[E0412]: unresolved type `u128`
  --> rust/src/libcore/num/u128.rs:16:20
   |
16 | uint_module! { u128, #[unstable(feature = "i128", issue="35118")] }
   | -------------------^-----------------------------------------------
   | |                  |
   | |                  no resolution found
   | in this macro invocation

error[E0433]: failed to resolve. Use of undeclared type or module `u128`
  --> rust/src/libcore/num/u128.rs:16:20
   |
16 |   uint_module! { u128, #[unstable(feature = "i128", issue="35118")] }
   |   -------------------^-----------------------------------------------
   |  _|__________________|
   | | |                  starting here...
   | | in this macro invocation
17 | |
18 | |
   | |_________________________________________^ ...ending here: Use of undeclared type or module `u128`

error[E0412]: unresolved type `u128`
  --> rust/src/libcore/num/u128.rs:16:20
   |
16 | uint_module! { u128, #[unstable(feature = "i128", issue="35118")] }
   | -------------------^-----------------------------------------------
   | |                  |
   | |                  no resolution found
   | in this macro invocation

error[E0433]: failed to resolve. Use of undeclared type or module `u128`
  --> rust/src/libcore/num/u128.rs:16:20
   |
16 |   uint_module! { u128, #[unstable(feature = "i128", issue="35118")] }
   |   -------------------^-----------------------------------------------
   |  _|__________________|
   | | |                  starting here...
   | | in this macro invocation
17 | |
18 | |
19 | |
20 | |
21 | |
   | |_________________________________________^ ...ending here: Use of undeclared type or module `u128`

error[E0412]: unresolved type `u128`
   --> rust/src/libcore/num/wrapping.rs:302:18
    |
302 | wrapping_impl! { u128 i128 }
    | -----------------^^^^-------
    | |                |
    | |                no resolution found
    | in this macro invocation

error[E0412]: unresolved type `u128`
   --> rust/src/libcore/num/wrapping.rs:302:18
    |
302 | wrapping_impl! { u128 i128 }
    | -----------------^^^^-------
    | |                |
    | |                no resolution found
    | in this macro invocation

error[E0412]: unresolved type `u128`
   --> rust/src/libcore/num/wrapping.rs:302:18
    |
302 | wrapping_impl! { u128 i128 }
    | -----------------^^^^-------
    | |                |
    | |                no resolution found
    | in this macro invocation

error[E0412]: unresolved type `u128`
   --> rust/src/libcore/num/wrapping.rs:302:18
    |
302 | wrapping_impl! { u128 i128 }
    | -----------------^^^^-------
    | |                |
    | |                no resolution found
    | in this macro invocation

error[E0412]: unresolved type `u128`
   --> rust/src/libcore/num/wrapping.rs:302:18
    |
302 | wrapping_impl! { u128 i128 }
    | -----------------^^^^-------
    | |                |
    | |                no resolution found
    | in this macro invocation

error[E0412]: unresolved type `u128`
   --> rust/src/libcore/num/wra