error: Could not compile libflate.

[iwconfig]

Seems like a bug, but I'm not in any way familiar with Rust. I have no idea how to solve this.

   Compiling libflate v0.1.11
error: `pub(restricted)` syntax is experimental (see issue #32409)
   --> /home/d/.cargo/registry/src/github.51.al-1ecc6299db9ec823/libflate-0.1.11/src/zlib.rs:202:9
    |
202 |     pub(crate) fn read_from<R>(mut reader: R) -> io::Result<Self>
    |         ^^^^^

error: `pub(restricted)` syntax is experimental (see issue #32409)
  --> /home/d/.cargo/registry/src/github.51.al-1ecc6299db9ec823/libflate-0.1.11/src/gzip.rs:98:5
   |
98 | pub(crate) struct Trailer {
   |     ^^^^^

error: `pub(restricted)` syntax is experimental (see issue #32409)
   --> /home/d/.cargo/registry/src/github.51.al-1ecc6299db9ec823/libflate-0.1.11/src/gzip.rs:370:9
    |
370 |     pub(crate) fn read_from<R>(mut reader: R) -> io::Result<Self>
    |         ^^^^^

error: `pub(restricted)` syntax is experimental (see issue #32409)
  --> /home/d/.cargo/registry/src/github.51.al-1ecc6299db9ec823/libflate-0.1.11/src/deflate/mod.rs:29:5
   |
29 | pub(crate) mod symbol;
   |     ^^^^^

error: `pub(restricted)` syntax is experimental (see issue #32409)
  --> /home/d/.cargo/registry/src/github.51.al-1ecc6299db9ec823/libflate-0.1.11/src/non_blocking/deflate/decode.rs:72:9
   |
72 |     pub(crate) fn bit_reader_mut(&mut self) -> &mut TransactionalBitReader<R> {
   |         ^^^^^

error: `pub(restricted)` syntax is experimental (see issue #32409)
   --> /home/d/.cargo/registry/src/github.51.al-1ecc6299db9ec823/libflate-0.1.11/src/bit.rs:143:9
    |
143 |     pub(crate) fn state(&self) -> BitReaderState {
    |         ^^^^^

error: `pub(restricted)` syntax is experimental (see issue #32409)
   --> /home/d/.cargo/registry/src/github.51.al-1ecc6299db9ec823/libflate-0.1.11/src/bit.rs:150:9
    |
150 |     pub(crate) fn restore_state(&mut self, state: BitReaderState) {
    |         ^^^^^

error: `pub(restricted)` syntax is experimental (see issue #32409)
   --> /home/d/.cargo/registry/src/github.51.al-1ecc6299db9ec823/libflate-0.1.11/src/bit.rs:171:5
    |
171 | pub(crate) struct BitReaderState {
    |     ^^^^^

error: aborting due to 8 previous errors

error: Could not compile `libflate`.
Build failed, waiting for other jobs to finish...
error: build failed

[dmfutcher]

Which version of Rust are you using? I can't reproduce this with the latest rustc stable (1.21). The error points to rust-lang/rust#32409, which I believe stabilized in 1.18.

I should add a note to the README that Rust 1.18 is the minimum required version.

[iwconfig]

Oh, yes that struck my mind when i woke up this morning. I installed the latest from the Ubuntu repository.

· rustc --version
rustc 1.17.0

Of course I should have checked the version since its almost always out of date. It works now. Oh well!

By the way, I also had to install a dev package regarding openssl-sys. Maybe you should add a note about that also.

Many thanks! :)