Error building docs on latest nightly

[toothbrush7777777]

$ rustc --version
rustc 1.35.0-nightly (474e7a648 2019-04-07)
$ cratesfyi --version
cratesfyi 0.6.0 (54fff31 2019-04-12)
$ cratesfyi ...
    Updating crates.io index
 Downloading crates ...
  Downloaded tide v0.1.0
       Fresh unicode-xid v0.1.0
       Fresh version_check v0.1.5
       Fresh semver-parser v0.7.0
       Fresh autocfg v0.1.2
       Fresh rand_core v0.4.0
       Fresh either v1.5.2
       Fresh cfg-if v0.1.7
       Fresh stable_deref_trait v1.1.1
       Fresh lazy_static v1.3.0
       Fresh nodrop v0.1.13
       Fresh cc v1.0.35
       Fresh smallvec v0.6.9
       Fresh memoffset v0.2.1
       Fresh scopeguard v0.3.3
       Fresh lazycell v1.2.1
       Fresh fnv v1.0.6
       Fresh futures v0.1.26
       Fresh pin-utils v0.1.0-alpha.4
       Fresh slab v0.4.2
       Fresh siphasher v0.2.3
       Fresh itoa v0.4.3
       Fresh string v0.1.3
       Fresh indexmap v1.0.2
       Fresh rustc-demangle v0.1.14
       Fresh try-lock v0.2.2
       Fresh remove_dir_all v0.5.1
       Fresh traitobject v0.1.0
       Fresh safemem v0.2.0
       Fresh percent-encoding v1.0.1
       Fresh quick-error v1.2.2
       Fresh safemem v0.3.0
       Fresh take_mut v0.2.2
       Fresh data-encoding v2.1.2
       Fresh route-recognizer v0.1.12
       Fresh semver v0.9.0
       Fresh rand_core v0.3.1
       Fresh rand_jitter v0.1.3
    Checking futures-core-preview v0.3.0-alpha.13
       Fresh log v0.4.6
       Fresh owning_ref v0.4.0
     Running `rustc --edition=2018 --crate-name futures_core /home/cratesfyi/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.13/src/lib.rs --color never --crate-type lib --emit=dep-info,metadata -C debuginfo=2 --cfg 'feature="either"' --cfg 'feature="std"' -C metadata=2e7e803a8105ff47 -C extra-filename=-2e7e803a8105ff47 --out-dir /home/cratesfyi/cratesfyi/debug/deps -L dependency=/home/cratesfyi/cratesfyi/debug/deps --extern either=/home/cratesfyi/cratesfyi/debug/deps/libeither-bdc8bce0295e6151.rmeta --cap-lints allow`
       Fresh crossbeam-utils v0.6.5
       Fresh tokio-trace-core v0.1.0
       Fresh thread_local v0.3.6
       Fresh tokio-sync v0.1.4
       Fresh unsafe-any v0.4.2
       Fresh proc-macro2 v0.4.27
       Fresh libc v0.2.51
       Fresh rustc_version v0.2.3
       Fresh rand_xorshift v0.1.1
       Fresh rand_hc v0.1.0
       Fresh rand_isaac v0.1.1
       Fresh byteorder v1.3.1
       Fresh arrayvec v0.4.10
       Fresh log v0.3.9
       Fresh want v0.0.6
       Fresh lock_api v0.1.5
       Fresh tokio-executor v0.1.7
       Fresh crossbeam-queue v0.1.2
       Fresh proc-macro-nested v0.1.3
       Fresh num-traits v0.2.6
       Fresh httparse v1.3.3
       Fresh memchr v2.2.0
       Fresh slog v2.4.1
       Fresh ryu v0.2.7
       Fresh serde v1.0.90
       Fresh typemap v0.3.3
       Fresh quote v0.6.12
       Fresh unicase v1.4.2
       Fresh rand_pcg v0.1.2
       Fresh rand_os v0.1.3
       Fresh iovec v0.1.2
       Fresh net2 v0.2.33
       Fresh num_cpus v1.10.0
       Fresh dirs v1.0.5
       Fresh rand v0.4.6
       Fresh time v0.1.42
       Fresh isatty v0.1.9
       Fresh rand_chacha v0.1.1
       Fresh crossbeam-epoch v0.7.1
       Fresh mime v0.2.6
       Fresh tokio-timer v0.2.10
       Fresh tokio-current-thread v0.1.6
       Fresh backtrace-sys v0.1.28
       Fresh num-integer v0.1.39
       Fresh buf_redux v0.8.1
       Fresh twoway v0.1.8
    Checking slog-async v2.3.0
       Fresh serde_json v1.0.39
       Fresh syn v0.15.31
       Fresh phf_shared v0.7.24
       Fresh bytes v0.4.12
     Running `rustc --crate-name slog_async /home/cratesfyi/.cargo/registry/src/github.com-1ecc6299db9ec823/slog-async-2.3.0/lib.rs --color never --crate-type lib --emit=dep-info,metadata -C debuginfo=2 --cfg 'feature="default"' -C metadata=89607886e7f2b66f -C extra-filename=-89607886e7f2b66f --out-dir /home/cratesfyi/cratesfyi/debug/deps -L dependency=/home/cratesfyi/cratesfyi/debug/deps --extern slog=/home/cratesfyi/cratesfyi/debug/deps/libslog-00bc00346a787279.rmeta --extern take_mut=/home/cratesfyi/cratesfyi/debug/deps/libtake_mut-f8facb6295102b7a.rmeta --extern thread_local=/home/cratesfyi/cratesfyi/debug/deps/libthread_local-0f2d4a7e970b5dcb.rmeta --cap-lints allow`
       Fresh mio v0.6.16
       Fresh futures-cpupool v0.1.8
       Fresh term v0.5.2
       Fresh tempdir v0.3.7
       Fresh cookie v0.11.0
   Compiling rand v0.6.5
     Running `rustc --crate-name rand /home/cratesfyi/.cargo/registry/src/github.com-1ecc6299db9ec823/rand-0.6.5/src/lib.rs --color never --crate-type lib --emit=dep-info,link -C debuginfo=2 --cfg 'feature="alloc"' --cfg 'feature="default"' --cfg 'feature="rand_core"' --cfg 'feature="rand_jitter"' --cfg 'feature="rand_os"' --cfg 'feature="std"' -C metadata=e659f24eaeae1c5d -C extra-filename=-e659f24eaeae1c5d --out-dir /home/cratesfyi/cratesfyi/debug/deps -L dependency=/home/cratesfyi/cratesfyi/debug/deps --extern libc=/home/cratesfyi/cratesfyi/debug/deps/liblibc-5f4e4d3a4417e1e5.rlib --extern rand_chacha=/home/cratesfyi/cratesfyi/debug/deps/librand_chacha-2bb0e3321678d42f.rlib --extern rand_core=/home/cratesfyi/cratesfyi/debug/deps/librand_core-778c2bd8f98d8595.rlib --extern rand_hc=/home/cratesfyi/cratesfyi/debug/deps/librand_hc-c2e32f93a5572ff1.rlib --extern rand_isaac=/home/cratesfyi/cratesfyi/debug/deps/librand_isaac-91c9549efcba8c53.rlib --extern rand_jitter=/home/cratesfyi/cratesfyi/debug/deps/librand_jitter-4877ba5d3b7e6042.rlib --extern rand_os=/home/cratesfyi/cratesfyi/debug/deps/librand_os-f3b0eee0fb4c0e76.rlib --extern rand_pcg=/home/cratesfyi/cratesfyi/debug/deps/librand_pcg-55bded92c617086b.rlib --extern rand_xorshift=/home/cratesfyi/cratesfyi/debug/deps/librand_xorshift-474f3f45ef6c6a3a.rlib --cap-lints allow --cfg rustc_1_25 --cfg rustc_1_26 --cfg rustc_1_27`
       Fresh crossbeam-deque v0.7.1
       Fresh backtrace v0.3.15
       Fresh chrono v0.4.6
   Compiling proc-macro-hack v0.5.4
     Running `rustc --crate-name proc_macro_hack /home/cratesfyi/.cargo/registry/src/github.com-1ecc6299db9ec823/proc-macro-hack-0.5.4/src/lib.rs --color never --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C debuginfo=2 -C metadata=abd93be71659dd13 -C extra-filename=-abd93be71659dd13 --out-dir /home/cratesfyi/cratesfyi/debug/deps -L dependency=/home/cratesfyi/cratesfyi/debug/deps --extern proc_macro2=/home/cratesfyi/cratesfyi/debug/deps/libproc_macro2-aefa8993a8430d7a.rlib --extern quote=/home/cratesfyi/cratesfyi/debug/deps/libquote-d322ea06fa8652c6.rlib --extern syn=/home/cratesfyi/cratesfyi/debug/deps/libsyn-5940bf3b9209cd9d.rlib --cap-lints allow`
error[E0053]: method `poll` has an incompatible type for trait
  --> /home/cratesfyi/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.13/src/future/future_obj.rs:64:5
   |
64 |     fn poll(self: Pin<&mut Self>, waker: &Waker) -> Poll<T> {
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability
   |
   = note: expected type `fn(std::pin::Pin<&mut future::future_obj::LocalFutureObj<'a, T>>, &mut std::task::Context<'_>) -> std::task::Poll<T>`
              found type `fn(std::pin::Pin<&mut future::future_obj::LocalFutureObj<'a, T>>, &std::task::Waker) -> std::task::Poll<T>`

error[E0053]: method `poll` has an incompatible type for trait
   --> /home/cratesfyi/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.13/src/future/future_obj.rs:114:5
    |
114 |     fn poll(self: Pin<&mut Self>, waker: &Waker) -> Poll<T> {
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability
    |
    = note: expected type `fn(std::pin::Pin<&mut future::future_obj::FutureObj<'a, T>>, &mut std::task::Context<'_>) -> std::task::Poll<T>`
               found type `fn(std::pin::Pin<&mut future::future_obj::FutureObj<'a, T>>, &std::task::Waker) -> std::task::Poll<T>`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0053`.
error: Could not compile `futures-core-preview`.

Caused by:
  process didn't exit successfully: `rustc --edition=2018 --crate-name futures_core /home/cratesfyi/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.13/src/lib.rs --color never --crate-type lib --emit=dep-info,metadata -C debuginfo=2 --cfg 'feature="either"' --cfg 'feature="std"' -C metadata=2e7e803a8105ff47 -C extra-filename=-2e7e803a8105ff47 --out-dir /home/cratesfyi/cratesfyi/debug/deps -L dependency=/home/cratesfyi/cratesfyi/debug/deps --extern either=/home/cratesfyi/cratesfyi/debug/deps/libeither-bdc8bce0295e6151.rmeta --cap-lints allow` (exit code: 1)
warning: build failed, waiting for other jobs to finish...
thread 'main' panicked at 'ErrorMessage {
    msg: "build failed"
}', src/bin/cratesfyi.rs:143:13
note: Run with `RUST_BACKTRACE=1` for a backtrace.

— https://docs.rs/crate/tide/0.1.0/builds/154400

[toothbrush7777777]

See also #173 (comment).

[fairingrey]

Once both http-rs/http-service#14 and #176 are merged, it should build on the latest nightly. Not only that, but the latter PR also updates Travis so the build succeeds too.

In the meantime, as I mentioned in that comment, one can get tide to work on the latest nightly by updating a few things in Cargo.toml

[...]
futures-preview = "0.3.0-alpha.14"
[...]
[patch.crates-io]
http-service = { git = 'https://github.com/prasannavl/http-service' }

Hopefully after this should be the last of the futures API being altered for a good while 😅

[prasannavl]

This should be fixed now with #176 merged.