Upgrade to libc 0.2

[frewsxcv]

No description provided.

[connorimes]

I'm getting this warning after upgrading the libc dependency. The same occurs in each of the -sys binding crates that implement a particular function prototype that accepts a size_t. Is this a bug in the libc crate?

$ cargo build
   Compiling libc v0.2.2
   Compiling pkg-config v0.3.6
   Compiling energymon-sys v0.1.0 (file:///local/energymon-sys/energymon-dummy-sys)
   Compiling energymon-dummy-sys v0.1.0 (file:///local/energymon-sys/energymon-dummy-sys)
lib.rs:16:63: 16:69 warning: found type without foreign-function-safe representation annotation in foreign module, consider adding a #[repr(...)] attribute to the type, #[warn(improper_ctypes)] on by default
lib.rs:16     pub fn energymon_get_source_dummy(buffer: *mut c_char, n: size_t) -> *mut c_char;
                                                                        ^~~~~~

[connorimes]

After some research, this warning should be fixed in 1.5 beta - see rust-lang/rust/pull/28779

[connorimes]

Fixed in c2e0b01.