Upgrade object and addr2line

Author: Kai Luo

Cargo.toml

@@ -37,13 +37,13 @@ rustc-serialize = { version = "0.3", optional = true }
 # Optionally demangle C++ frames' symbols in backtraces.
 cpp_demangle = { default-features = false, version = "0.4.0", optional = true, features = ["alloc"] }
 
-addr2line = { version = "0.19.0", default-features = false }
+addr2line = { version = "0.20.0", default-features = false }
 miniz_oxide = { version = "0.6.0", default-features = false }
 
 [dependencies.object]
-version = "0.30.0"
+version = "0.31.0"
 default-features = false
-features = ['read_core', 'elf', 'macho', 'pe', 'unaligned', 'archive']
+features = ['read_core', 'elf', 'macho', 'pe', 'xcoff', 'unaligned', 'archive']
 
 [target.'cfg(windows)'.dependencies]
 winapi = { version = "0.3.9", optional = true }