Regression in roboime-next-protocol-0.1.0, Rust 1.16, can't find protobuf_build

[brson]

101 brian@ip-10-145-43-250:~/dev/roboime-next⟫ git remote -v
origin  https://github.com/roboime/roboime-next/ (fetch)
origin  https://github.com/roboime/roboime-next/ (push)
brian@ip-10-145-43-250:~/dev/roboime-next⟫ git log -1
commit 54a8d0b69c5da3399af61d5742b65c385d638ca3
Merge: 12fbfed 1ca66a1
Author: Jan Segre <jansegre@gmail.com>
Date:   Wed Sep 14 00:44:34 2016 -0300

    Merge pull request #5 from roboime/dev

    First release.

127 brian@ip-10-145-43-250:/mnt2/dev⟫ rustc +nightly -Vv
rustc 1.17.0-nightly (be760566c 2017-02-28)
binary: rustc
commit-hash: be760566cf938d11d34c2f6bd90d8fd0f67c2344
commit-date: 2017-02-28
host: x86_64-unknown-linux-gnu
release: 1.17.0-nightly
LLVM version: 3.9

130 brian@ip-10-145-43-250:~/dev/roboime-next⟫ cargo +nightly test
   Compiling unicode-normalization v0.1.2
   Compiling num-traits v0.1.32
   Compiling byteorder v0.5.3
   Compiling libloading v0.2.2
   Compiling utf8-ranges v0.1.3
   Compiling regex-syntax v0.3.3
   Compiling libc v0.1.12
   Compiling num-integer v0.1.32
   Compiling itertools v0.4.15
warning[E0122]: trait bounds are not (yet) enforced in type definitions
   --> /home/brian/.cargo/registry/src/gh.neting.cc-1ecc6299db9ec823/itertools-0.4.15/src/lib.rs:117:1
    |
117 | pub type MapFn<I, B> where I: Iterator = iter::Map<I, fn(I::Item) -> B>;
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

   Compiling clock_ticks v0.1.0
   Compiling unicode-width v0.1.3
   Compiling debug-builders v0.1.0
   Compiling log v0.3.6
   Compiling khronos_api v1.0.0
   Compiling lazy_static v0.1.16
   Compiling protobuf v1.0.21
   Compiling bitflags v0.7.0
   Compiling cfg-if v0.1.0
   Compiling strsim v0.4.1
   Compiling x11-dl v2.5.1
   Compiling num-iter v0.1.32
   Compiling xml-rs v0.3.4
   Compiling ansi_term v0.7.2
   Compiling odds v0.2.14
   Compiling winapi-build v0.1.1
   Compiling ws2_32-sys v0.2.1
   Compiling kernel32-sys v0.2.2
   Compiling rustc-serialize v0.3.19
   Compiling roboime-next-protocol v0.1.0 (file:///mnt2/dev/roboime-next/protocol)
error[E0463]: can't find crate for `protobuf_build`
 --> protocol/build.rs:1:1
  |
1 | extern crate protobuf_build;
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate

error: aborting due to previous error

error: Could not compile `roboime-next-protocol`.
Build failed, waiting for other jobs to finish...
error: build failed

Note on beta/stable this crate gets a different error:

   Compiling utf8-ranges v0.1.3
   Compiling nodrop v0.1.6
   Compiling arrayvec v0.3.16
   Compiling num-iter v0.1.32
   Compiling smallvec v0.1.7
   Compiling cfg-if v0.1.0
   Compiling gcc v0.3.28
   Compiling unicode-normalization v0.1.2
   Compiling protobuf v1.0.21
   Compiling num-complex v0.1.32
   Compiling linked-hash-map v0.0.9
   Compiling num v0.1.32
   Compiling winapi v0.2.7
   Compiling semver v0.1.20
   Compiling debug-builders v0.1.0
   Compiling winapi-build v0.1.1
   Compiling dbghelp-sys v0.2.0
   Compiling rustc_version v0.1.7
   Compiling ws2_32-sys v0.2.1
   Compiling libc v0.1.12
   Compiling tempfile v2.1.3
   Compiling ndarray v0.3.1
   Compiling bitflags v0.7.0
   Compiling clock_ticks v0.1.0
   Compiling xml-rs v0.3.4
   Compiling unicode-width v0.1.3
   Compiling stb_truetype v0.2.0
error[E0277]: the trait bound `Self: std::marker::Sized` is not satisfied
   --> /home/brian/.cargo/registry/src/gh.neting.cc-1ecc6299db9ec823/ndarray-0.3.1/src/lib.rs:366:5
    |
366 |     unsafe fn clone_with_ptr(&self, ptr: *mut Self::Elem) -> (Self, *mut Self::Elem);
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `std::marker::Sized` is not implemented for `Self`
    |
    = help: consider adding a `where Self: std::marker::Sized` bound
    = note: tuple elements must have `Sized` type

error: aborting due to previous error

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

cc @roboime

[alexcrichton]

@brson this looks like the build.rs inference that cargo now does most likely.

[alexcrichton]

PR submitted roboime/roboime-next#6

[jansegre]

Merged. Your efforts are really appreciated.

[alexcrichton]

THanks @jansegre!