Update faerie, remove usage of failure (#591)

This commit removes the usage of the `failure` crate and finishes up the
final pieces of the migration to `std::error::Error` and `anyhow`. The
`faerie` crate was updated to pull in its migration from `failure` to
`anyhow` as well.

crates/jit/src/instantiate.rs

@@ -44,8 +44,8 @@ pub enum SetupError {
     Instantiate(#[from] InstantiationError),
 
     /// Debug information generation error occured.
-    #[error("Debug information error: {0}")]
-    DebugInfo(failure::Error),
+    #[error("Debug information error")]
+    DebugInfo(#[from] anyhow::Error),
 }
 
 /// This is similar to `CompiledModule`, but references the data initializers