Build fails on Linux due to mark parity

[ringtailsoftware]

zig version
0.13.0

uname -a
Linux howlin 4.15.0-33-generic #36~16.04.1-Ubuntu SMP Wed Aug 15 17:21:05 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux


zig build examples
examples
└─ install echo
   └─ zig build-exe echo Debug native 1 errors
src/serial.zig:855:32: error: no field named 'CMSPAR' in struct 'os.linux.tc_cflag_t__struct_2972'
                settings.cflag.CMSPAR = config.parity == .mark;
                               ^~~~~~
/home/trj/org/zig/zig-linux-x86_64-0.13.0/lib/std/os/linux.zig:5763:20: note: struct declared here
    else => packed struct(u32) {
            ~~~~~~~^~~~~~
referenced by:
    main: examples/echo.zig:16:19
    callMain: /home/trj/org/zig/zig-linux-x86_64-0.13.0/lib/std/start.zig:524:32
    remaining reference traces hidden; use '-freference-trace' to see all reference traces
error: the following command failed with 1 compilation errors:
/home/trj/org/zig/zig-linux-x86_64-0.13.0/zig build-exe -ODebug --dep serial -Mroot=/home/trj/org/zig/serial/examples/echo.zig -Mserial=/home/trj/org/zig/serial/src/serial.zig --cache-dir /home/trj/org/zig/serial/.zig-cache --global-cache-dir /home/trj/.cache/zig --name echo --listen=-
Build Summary: 4/7 steps succeeded; 1 failed (disable with --summary none)
examples transitive failure
├─ zig build-exe echo Debug native 1 errors
└─ install echo transitive failure
   └─ zig build-exe echo Debug native (reused)
error: the following build command failed with exit code 1:
/home/trj/org/zig/serial/.zig-cache/o/6200eed03a0d0657c578d910ebfb459f/build /home/trj/org/zig/zig-linux-x86_64-0.13.0/zig /home/trj/org/zig/serial /home/trj/org/zig/serial/.zig-cache /home/trj/.cache/zig --seed 0x8d50afca -Z76b708a5cf854f53 examples