Can't compile package to wasm

[AchalaSB]

Hi,
Getting error while compiling package to webassembly using wasm32-unknown-uknown

cargo build --target wasm32-unknown-unknown
   Compiling net2 v0.2.33
   Compiling byteorder v1.3.2
   Compiling arrayvec v0.4.11
   Compiling rand v0.5.6
   Compiling log v0.4.8
   Compiling openssl-sys v0.9.48
   Compiling tokio-executor v0.1.8
   Compiling crunchy v0.2.2
error[E0432]: unresolved import `sys`
  --> /home/achala/.cargo/registry/src/github.com-1ecc6299db9ec823/net2-0.2.33/src/tcp.rs:18:5
   |
18 | use sys::c;
   |     ^^^ maybe a missing `extern crate sys;`?

error[E0432]: unresolved import `sys`
  --> /home/achala/.cargo/registry/src/github.com-1ecc6299db9ec823/net2-0.2.33/src/udp.rs:18:5
   |
18 | use sys::c;
   |     ^^^ maybe a missing `extern crate sys;`?

   Compiling bitflags v1.1.0
error[E0432]: unresolved import `sys`
  --> /home/achala/.cargo/registry/src/github.com-1ecc6299db9ec823/net2-0.2.33/src/socket.rs:22:5
   |
22 | use sys;
   |     ^^^ no `sys` in the root

error[E0432]: unresolved import `sys`
  --> /home/achala/.cargo/registry/src/github.com-1ecc6299db9ec823/net2-0.2.33/src/socket.rs:23:5
   |
23 | use sys::c;
   |     ^^^ maybe a missing `extern crate sys;`?

error[E0432]: unresolved import `sys`
  --> /home/achala/.cargo/registry/src/github.com-1ecc6299db9ec823/net2-0.2.33/src/ext.rs:19:5
   |
19 | use sys;
   |     ^^^ no `sys` in the root

error[E0432]: unresolved import `sys`
  --> /home/achala/.cargo/registry/src/github.com-1ecc6299db9ec823/net2-0.2.33/src/ext.rs:20:5
   |
20 | use sys::c;
   |     ^^^ maybe a missing `extern crate sys;`?

error: failed to run custom build command for `openssl-sys v0.9.48`
 --------
error[E0599]: no method named `as_sock` found for type `&tcp::TcpBuilder` in the current scope
    --> /home/achala/.cargo/registry/src/github.com-1ecc6299db9ec823/net2-0.2.33/src/ext.rs:1428:22
     |
1428 |         set_opt(self.as_sock(), SOL_SOCKET, SO_REUSEADDR,
     |                      ^^^^^^^
     |
     = help: items from traits can only be used if the trait is implemented and in scope
     = note: the following trait defines an item `as_sock`, perhaps you need to implement it:
             candidate #1: `ext::AsSock`

error[E0599]: no method named `as_sock` found for type `&tcp::TcpBuilder` in the current scope
    --> /home/achala/.cargo/registry/src/github.com-1ecc6299db9ec823/net2-0.2.33/src/ext.rs:1434:22
     |
1434 |         get_opt(self.as_sock(), SOL_SOCKET, SO_REUSEADDR).map(int2bool)
     |                      ^^^^^^^
     |
     = help: items from traits can only be used if the trait is implemented and in scope
     = note: the following trait defines an item `as_sock`, perhaps you need to implement it:
             candidate #1: `ext::AsSock`

error[E0599]: no method named `as_sock` found for type `&tcp::TcpBuilder` in the current scope
    --> /home/achala/.cargo/registry/src/github.com-1ecc6299db9ec823/net2-0.2.33/src/ext.rs:1443:22
     |
1443 |         get_opt(self.as_sock(), SOL_SOCKET, SO_ERROR).map(int2err)
     |                      ^^^^^^^
     |
     = help: items from traits can only be used if the trait is implemented and in scope
     = note: the following trait defines an item `as_sock`, perhaps you need to implement it:
             candidate #1: `ext::AsSock`

error[E0599]: no method named `as_sock` found for type `&tcp::TcpBuilder` in the current scope
    --> /home/achala/.cargo/registry/src/github.com-1ecc6299db9ec823/net2-0.2.33/src/ext.rs:1448:22
     |
1448 |         set_opt(self.as_sock(), SOL_SOCKET, SO_LINGER, dur2linger(dur))
     |                      ^^^^^^^
     |
     = help: items from traits can only be used if the trait is implemented and in scope
     = note: the following trait defines an item `as_sock`, perhaps you need to implement it:
             candidate #1: `ext::AsSock`

error[E0599]: no method named `as_sock` found for type `&tcp::TcpBuilder` in the current scope
    --> /home/achala/.cargo/registry/src/github.com-1ecc6299db9ec823/net2-0.2.33/src/ext.rs:1453:22
     |
1453 |         get_opt(self.as_sock(), SOL_SOCKET, SO_LINGER).map(linger2dur)
     |                      ^^^^^^^
     |
     = help: items from traits can only be used if the trait is implemented and in scope
     = note: the following trait defines an item `as_sock`, perhaps you need to implement it:
             candidate #1: `ext::AsSock`

error[E0599]: no method named `as_sock` found for type `&udp::UdpBuilder` in the current scope
    --> /home/achala/.cargo/registry/src/github.com-1ecc6299db9ec823/net2-0.2.33/src/ext.rs:1464:22
     |
1464 |         set_opt(self.as_sock(), IPPROTO_IP, IP_TTL, ttl as c_int)
     |                      ^^^^^^^
     |
     = help: items from traits can only be used if the trait is implemented and in scope
     = note: the following trait defines an item `as_sock`, perhaps you need to implement it:
             candidate #1: `ext::AsSock`

error[E0599]: no method named `as_sock` found for type `&udp::UdpBuilder` in the current scope
    --> /home/achala/.cargo/registry/src/github.com-1ecc6299db9ec823/net2-0.2.33/src/ext.rs:1474:22
     |
1474 |         set_opt(self.as_sock(), v(IPPROTO_IPV6), IPV6_V6ONLY, only_v6 as c_int)
     |                      ^^^^^^^
     |
     = help: items from traits can only be used if the trait is implemented and in scope
     = note: the following trait defines an item `as_sock`, perhaps you need to implement it:
             candidate #1: `ext::AsSock`

error[E0599]: no method named `as_sock` found for type `&udp::UdpBuilder` in the current scope
    --> /home/achala/.cargo/registry/src/github.com-1ecc6299db9ec823/net2-0.2.33/src/ext.rs:1484:22
     |
1484 |         set_opt(self.as_sock(), SOL_SOCKET, SO_REUSEADDR,
     |                      ^^^^^^^
     |
     = help: items from traits can only be used if the trait is implemented and in scope
     = note: the following trait defines an item `as_sock`, perhaps you need to implement it:
             candidate #1: `ext::AsSock`

error[E0599]: no method named `as_sock` found for type `&udp::UdpBuilder` in the current scope
    --> /home/achala/.cargo/registry/src/github.com-1ecc6299db9ec823/net2-0.2.33/src/ext.rs:1490:22
     |
1490 |         get_opt(self.as_sock(), SOL_SOCKET, SO_REUSEADDR).map(int2bool)
     |                      ^^^^^^^
     |
     = help: items from traits can only be used if the trait is implemented and in scope
     = note: the following trait defines an item `as_sock`, perhaps you need to implement it:
             candidate #1: `ext::AsSock`

error[E0599]: no method named `as_sock` found for type `&udp::UdpBuilder` in the current scope
    --> /home/achala/.cargo/registry/src/github.com-1ecc6299db9ec823/net2-0.2.33/src/ext.rs:1499:22
     |
1499 |         get_opt(self.as_sock(), SOL_SOCKET, SO_ERROR).map(int2err)
     |                      ^^^^^^^
     |
     = help: items from traits can only be used if the trait is implemented and in scope
     = note: the following trait defines an item `as_sock`, perhaps you need to implement it:
             candidate #1: `ext::AsSock`

error: aborting due to 317 previous errors

Some errors have detailed explanations: E0046, E0412, E0422, E0425, E0432, E0599.
For more information about an error, try `rustc --explain E0046`.
error: Could not compile `net2`.
warning: build failed, waiting for other jobs to finish...
error: build failed

How can I solve this error? @alexcrichton can you help me on this
TIA