swift: /home/buildnode/jenkins/workspace/oss-swift-4.1-package-linux-ubuntu-16_04/llvm/include/llvm/Support/Casting.h:255: typename cast_retty<X, Y *>::ret_type llvm::cast(Y *) [X = swift::MetatypeType, Y = swift::TypeBase]: Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed. /usr/bin/swift[0x3f24d54] /usr/bin/swift[0x3f25096] /lib/x86_64-linux-gnu/libpthread.so.0(+0x11390)[0x7f3c457f8390] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x38)[0x7f3c43f37428] /lib/x86_64-linux-gnu/libc.so.6(abort+0x16a)[0x7f3c43f3902a] /lib/x86_64-linux-gnu/libc.so.6(+0x2dbd7)[0x7f3c43f2fbd7] /lib/x86_64-linux-gnu/libc.so.6(+0x2dc82)[0x7f3c43f2fc82] /usr/bin/swift[0x5f332c] /usr/bin/swift[0xc6c474] /usr/bin/swift[0xc80ca8] /usr/bin/swift[0xc77e4c] /usr/bin/swift[0xc6eff8] /usr/bin/swift[0xcf6b1a] /usr/bin/swift[0xcf74c6] /usr/bin/swift[0xcf620a] /usr/bin/swift[0xcf55ab] /usr/bin/swift[0xcf4e80] /usr/bin/swift[0xce08fc] /usr/bin/swift[0xcdf3dc] /usr/bin/swift[0xc74274] /usr/bin/swift[0xc78307] /usr/bin/swift[0xc6f45b] /usr/bin/swift[0xcc12b1] /usr/bin/swift[0xcc106e] /usr/bin/swift[0xc8fec5] /usr/bin/swift[0xc33515] /usr/bin/swift[0xc32021] /usr/bin/swift[0xc3221d] /usr/bin/swift[0x4c27c4] /usr/bin/swift[0x4beecc] /usr/bin/swift[0x4778c4] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x7f3c43f22830] /usr/bin/swift[0x475179] Stack dump: 0. Program arguments: /usr/bin/swift -frontend -interpret /usercode/main.swift -disable-objc-interop -I /usr/lib/swift/clang/include/ -I /vendor/SwiftyMath/.build/release/ -I /vendor/swift-package-libbsd/ -module-name main -ldSwiftyMath 1. While silgen emitFunction SIL function "@_T04main8PropertyV6encodeys7Encoder_p2to_tKF". for 'encode(to:)' in module 'main' Aborted (core dumped)
