disable them by default for the time being.
Last-Update: 2018-04-09
---- a/src/cargo/core/manifest.rs
-+++ b/src/cargo/core/manifest.rs
-@@ -711,6 +711,9 @@
+--- a/src/cargo/core/profiles.rs
++++ b/src/cargo/core/profiles.rs
+@@ -386,6 +386,9 @@
debuginfo: Some(2),
debug_assertions: true,
overflow_checks: true,
-+ #[cfg(target_arch = "sparc64")]
++ #[cfg(target_arch = "sparc64")]
+ incremental: false,
-+ #[cfg(not(target_arch = "sparc64"))]
++ #[cfg(not(target_arch = "sparc64"))]
incremental: true,
..Profile::default()
}