Skins show up as a missing texture in the snapshot. The error log is as follows:

java.io.FileNotFoundException: minecraft:skins/fa96146afdb6ebe44f4eaf866d76d6efa2555769299091c0897bf38ab260a68

at cuv.a(SourceFile:52) ~[14w34c.jar:?]

at cvm.a(SourceFile:55) ~[14w34c.jar:?]

at ctp.a(SourceFile:28) ~[14w34c.jar:?]

at cua.a(SourceFile:56) [14w34c.jar:?]

at cua.a(SourceFile:38) [14w34c.jar:?]

at ckd.a(SourceFile:385) [14w34c.jar:?]

at ckd.a(SourceFile:516) [14w34c.jar:?]

at cjd.b(SourceFile:738) [14w34c.jar:?]

at cjd.a(SourceFile:1310) [14w34c.jar:?]

at cjd.a(SourceFile:1123) [14w34c.jar:?]

at cjd.b(SourceFile:976) [14w34c.jar:?]

at bsr.as(SourceFile:902) [14w34c.jar:?]

at bsr.a(SourceFile:313) [14w34c.jar:?]

at net.minecraft.client.main.Main.main(SourceFile:120) [14w34c.jar:?]

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_55]

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_55]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_55]

at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_55]

See the screenshot attached.