Compiling libloading v0.5.2
   Compiling cocoa v0.19.1
   Compiling backtrace-sys v0.1.32
   Compiling serde v1.0.101
   Compiling tiff v0.2.2
   Compiling shaderc-sys v0.6.1
   Compiling curl v0.4.25
   Compiling curl-sys v0.4.23
   Compiling metal v0.13.1
error[E0282]: type annotations needed
   --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/lib.rs:128:13
    |
128 |             msg_send![self.0, release];
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider giving `result` a type
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
   --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/lib.rs:303:13
    |
303 |             msg_send![self, setPresentsWithTransaction:transaction];
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider giving `result` a type
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
   --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/lib.rs:321:13
    |
321 |             msg_send![self, removeAllAnimations];
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider giving `result` a type
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
   --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/lib.rs:333:13
    |
333 |             msg_send![self, setContentsScale:scale];
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider giving `result` a type
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
   --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/lib.rs:380:5
    |
380 |     msg_send![(p as *mut Object), release];
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider giving `result` a type
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
    --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/device.rs:1483:21
     |
1483 |                     msg_send![err, release];
     |                     ^^^^^^^^^^^^^^^^^^^^^^^^ consider giving `result` a type
     |
     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
    --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/device.rs:1503:44
     |
1503 |               let library: *mut MTLLibrary = try_objc!{ err =>
     |  ____________________________________________^
1504 | |                 msg_send![self, newLibraryWithFile:filename
1505 | |                                              error:&mut err]
1506 | |             };
     | |             ^
     | |             |
     | |_____________consider giving `result` a type
     |               in this macro invocation
     |
     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
    --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/device.rs:1522:44
     |
1522 |               let library: *mut MTLLibrary = try_objc! { err =>
     |  ____________________________________________^
1523 | |                  msg_send![self, newLibraryWithData:data
1524 | |                                               error:&mut err]
1525 | |             };
     | |             ^
     | |             |
     | |_____________consider giving `result` a type
     |               in this macro invocation
     |
     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
    --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/device.rs:1535:63
     |
1535 |               let pipeline_state: *mut MTLRenderPipelineState = try_objc!{ err =>
     |  _______________________________________________________________^
1536 | |                 msg_send![self, newRenderPipelineStateWithDescriptor:descriptor
1537 | |                                                              options:reflection_options
1538 | |                                                           reflection:reflection
1539 | |                                                                error:&mut err]
1540 | |             };
     | |             ^
     | |             |
     | |_____________consider giving `result` a type
     |               in this macro invocation
     |
     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
    --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/device.rs:1548:63
     |
1548 |               let pipeline_state: *mut MTLRenderPipelineState = try_objc!{ err =>
     |  _______________________________________________________________^
1549 | |                 msg_send![self, newRenderPipelineStateWithDescriptor:descriptor
1550 | |                                                                error:&mut err]
1551 | |             };
     | |             ^
     | |             |
     | |_____________consider giving `result` a type
     |               in this macro invocation
     |
     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
    --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/device.rs:1559:64
     |
1559 |               let pipeline_state: *mut MTLComputePipelineState = try_objc!{ err =>
     |  ________________________________________________________________^
1560 | |                 msg_send![self, newComputePipelineStateWithFunction:function
1561 | |                                                               error:&mut err]
1562 | |             };
     | |             ^
     | |             |
     | |_____________consider giving `result` a type
     |               in this macro invocation
     |
     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
  --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/renderpass.rs:69:13
   |
69 |             msg_send![self, setTexture:texture];
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider giving `result` a type
   |
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
  --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/commandbuffer.rs:60:13
   |
60 |             msg_send![self, setLabel:nslabel];
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider giving `result` a type
   |
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
   --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/encoder.rs:138:13
    |
138 |             msg_send![self, setLabel:nslabel];
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider giving `result` a type
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
   --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/encoder.rs:144:13
    |
144 |             msg_send![self, endEncoding];
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider giving `result` a type
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
   --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/library.rs:235:28
    |
235 |                 Some(c) => try_objc!{ err => msg_send![self, newFunctionWithName:nsname constantValues:c error:&mut err] },
    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |                            |
    |                            consider giving `result` a type
    |                            in this macro invocation
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
   --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/heap.rs:131:13
    |
131 |             msg_send![self, setSize: size];
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider giving `result` a type
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
  --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/capturemanager.rs:23:13
   |
23 |             msg_send![self, beginScope];
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider giving `result` a type
   |
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
  --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/capturemanager.rs:29:13
   |
29 |             msg_send![self, endScope];
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^ consider giving `result` a type
   |
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
  --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/capturemanager.rs:80:13
   |
80 |             msg_send![self, startCaptureWithDevice: device];
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider giving `result` a type
   |
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
  --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/capturemanager.rs:86:13
   |
86 |             msg_send![self, startCaptureWithCommandQueue: command_queue];
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider giving `result` a type
   |
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
  --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/capturemanager.rs:92:13
   |
92 |             msg_send![self, startCaptureWithScope: scope];
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider giving `result` a type
   |
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0282]: type annotations needed
  --> /Users/bencongdon/.cargo/registry/src/github.com-1ecc6299db9ec823/metal-0.13.1/src/capturemanager.rs:98:13
   |
98 |             msg_send![self, stopCapture];
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider giving `result` a type
   |
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: aborting due to 23 previous errors

For more information about this error, try `rustc --explain E0282`.
error: could not compile `metal`.