Windows: failing unit tests in libstd\rt\io\net\tcp.rs

[vadimcn]

connect_error
task <unnamed> failed at 'assertion failed: (left == right) && (right == left)(left:OtherIoError, right: ConnectionRefused)', C:\Rust\src\libstd\rt\i o\net\tcp.rs:170
read_eof_twice_ip4 (hangs)
read_eof_twice_ip6 (hangs)
write_close_ip4
failed in non-task context at 'assertion failed: (left == right) && (right == left)(left:0i32, right: -4080i32)', C:\Rust\src\libstd\rt\uv\net.rs:161
write_close_ip6
failed in non-task context at 'assertion failed: (left == right) && (right == left)(left:0i32, right: -4080i32)', C:\Rust\src\libstd\rt\uv\net.rs:161