python3 setup.py bdist_wheel error while building using rustup nightly

[danindiana]

rustup run nightly rustc --version rustc 1.34.0-nightly (c1c3c4e95 2019-01-29)

Example of the output:

error: attribute must be of the form #[target_feature(enable = "name")] --> /home/johnh/.cargo/registry/src/github.com-1ecc6299db9ec823/stdsimd-0.0.3/src/x86/tbm.rs:209:1 | 209 | #[target_feature = "+tbm"] | ^^^^^^^^^^^^^^^^^^^^^^^^^^

error: attribute must be of the form #[target_feature(enable = "name")] --> /home/johnh/.cargo/registry/src/github.com-1ecc6299db9ec823/stdsimd-0.0.3/src/x86/tbm.rs:221:1 | 221 | #[target_feature = "+tbm"] | ^^^^^^^^^^^^^^^^^^^^^^^^^^

error: attribute must be of the form #[target_feature(enable = "name")] --> /home/johnh/.cargo/registry/src/github.com-1ecc6299db9ec823/stdsimd-0.0.3/src/x86/tbm.rs:232:1 | 232 | #[target_feature = "+tbm"] | ^^^^^^^^^^^^^^^^^^^^^^^^^^

error: attribute must be of the form #[target_feature(enable = "name")] --> /home/johnh/.cargo/registry/src/github.com-1ecc6299db9ec823/stdsimd-0.0.3/src/x86/tbm.rs:244:1 | 244 | #[target_feature = "+tbm"] | ^^^^^^^^^^^^^^^^^^^^^^^^^^

error: attribute must be of the form #[target_feature(enable = "name")] --> /home/johnh/.cargo/registry/src/github.com-1ecc6299db9ec823/stdsimd-0.0.3/src/x86/tbm.rs:255:1 | 255 | #[target_feature = "+tbm"] | ^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 750 previous errors

error: Could not compile stdsimd. warning: build failed, waiting for other jobs to finish... error: build failed

python3 version 3.6.8

pip list DEPRECATION: The default format will switch to columns in the future. You can use --format=(legacy|columns) (or define a format=(legacy|columns) in your pip.conf under the [list] section) to disable this warning.
cffi (1.11.5) milksnake (0.1.5) Pillow (5.4.1) pip (9.0.1) pkg-resources (0.0.0) pycparser (2.19) rustface (0.1.0) setuptools (39.0.1) wheel (0.32.3)