Nix 0.8.0 fails to build on FreeBSD 10.3

[alexreg]

Here's the error log.

   Compiling nix v0.8.0
error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:173:21
    |
173 |                     B0 => BaudRate::B0,
    |                     ^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:174:21
    |
174 |                     B50 => BaudRate::B50,
    |                     ^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:175:21
    |
175 |                     B75 => BaudRate::B75,
    |                     ^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:176:21
    |
176 |                     B110 => BaudRate::B110,
    |                     ^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:177:21
    |
177 |                     B134 => BaudRate::B134,
    |                     ^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:178:21
    |
178 |                     B150 => BaudRate::B150,
    |                     ^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:179:21
    |
179 |                     B200 => BaudRate::B200,
    |                     ^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:180:21
    |
180 |                     B300 => BaudRate::B300,
    |                     ^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:181:21
    |
181 |                     B600 => BaudRate::B600,
    |                     ^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:182:21
    |
182 |                     B1200 => BaudRate::B1200,
    |                     ^^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:183:21
    |
183 |                     B1800 => BaudRate::B1800,
    |                     ^^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:184:21
    |
184 |                     B2400 => BaudRate::B2400,
    |                     ^^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:185:21
    |
185 |                     B4800 => BaudRate::B4800,
    |                     ^^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:186:21
    |
186 |                     B9600 => BaudRate::B9600,
    |                     ^^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:187:21
    |
187 |                     B19200 => BaudRate::B19200,
    |                     ^^^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:188:21
    |
188 |                     B38400 => BaudRate::B38400,
    |                     ^^^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:189:21
    |
189 |                     B7200 => BaudRate::B7200,
    |                     ^^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:190:21
    |
190 |                     B14400 => BaudRate::B14400,
    |                     ^^^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:191:21
    |
191 |                     B28800 => BaudRate::B28800,
    |                     ^^^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:192:21
    |
192 |                     B57600 => BaudRate::B57600,
    |                     ^^^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:193:21
    |
193 |                     B76800 => BaudRate::B76800,
    |                     ^^^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:194:21
    |
194 |                     B115200 => BaudRate::B115200,
    |                     ^^^^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:195:21
    |
195 |                     B230400 => BaudRate::B230400,
    |                     ^^^^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:197:21
    |
197 |                     B460800 => BaudRate::B460800,
    |                     ^^^^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error[E0308]: mismatched types
   --> /home/alexuk/.cargo/registry/src/github.com-1ecc6299db9ec823/nix-0.8.0/src/sys/termios.rs:199:21
    |
199 |                     B921600 => BaudRate::B921600,
    |                     ^^^^^^^ expected u64, found u32
    |
    = note: expected type `u64`
               found type `u32`

error: aborting due to 25 previous errors

error: Could not compile `nix`.

[berkowski]

Compile errors should be fixed by #553, though the PR appears stalled.

[alexreg]

Okay, great. Mind pinging me a new release is made, then I can test?

[kamalmarhubi]

This seems bad. I'm going to try and make a point release to include the build fix this weekend. Will ping when done.

[Susurrus]

Note that a lot of this termios stuff is fixed in my stalled PR #527. There is a lot of stuff now in libc that we should rely on instead of reimplementing things. @kamalmarhubi You may find it useful to pick out the upstreamed stuff from that instead of just changing the nix definitions of all these constants.

Also, with the work ongoing in #536 we should try to add FreeBSD in there if we don't want to repeat these issues.

[Susurrus]

Also, according to the changes in #536 all this work is already done in the new-ci branch. (see build results here: https://travis-ci.org/nix-rust/nix/builds/219888273). Maybe we should push on getting that merged instead of doing any extra work?

[mmokhi]

Sorry for ping on this,
Any release (at least because of this fix 😄) is planned in near future? (or even merging this in current 0.8.0 release)

[asomers]

It's fixed in the new-ci/master branch. Finishing that branch and merging it is our highest priority ATM. But in the meantime, you can use it. The last known bug only concerns musl.

[mmokhi]

I'm not using it directly.
I'm building another project (on FreeBSD) that uses Cargo, and it's downloading the 0.8.0 as far as I understood.
Anyway to modify that behavior of cargo?

[asomers]

I haven't found a good way to do it. What I do is clone the project locally and modify its Cargo.toml file to point to the branch I want. Then I modify my project's Cargo.toml file to point to my local clone of the intermediate project using a path directive, like mio = { path = "/home/somers/src/rust/mio" }

[mmokhi]

Good hint.
I'll try it, thanks 😉

[kamalmarhubi]

I'm sorry I failed to get to this last week. Is this fixed in nix/master?

[asomers]

@kamalmarhubi do you mean new-ci/master? Yes, it is.

[Susurrus]

My plan is to finalize new-ci/master today and leave all failing architectures (which are new architectures to testing) as allow_failures. Then we can release a new version. Though since there was an API break, we should do a 0.9.0 release.