Test fixes from rollup

Closes #14888 (Allow disabling jemalloc as the memory allocator)
Closes #14905 (rustc: Improve span for error about using a method as a field.)
Closes #14920 (Fix #14915)
Closes #14924 (Add a Syntastic plugin for Rust.)
Closes #14935 (debuginfo: Correctly handle indirectly recursive types)
Closes #14938 (Reexport `num_cpus` in `std::os`. Closes #14707)
Closes #14941 (std: Don't fail the task when a Future is dropped)
Closes #14942 (rustc: Don't mark type parameters as exported)
Closes #14943 (doc: Fix a link in the FAQ)
Closes #14944 (Update "use" to "uses" on ln186)
Closes #14949 (Update repo location)
Closes #14950 (fix typo in the libc crate)
Closes #14951 (Update Sublime Rust github link)
Closes #14953 (Fix --disable-rpath and tests)

Author: alexcrichton

mk/tests.mk

@@ -376,7 +376,8 @@ $(3)/stage$(1)/test/$(4)test-$(2)$$(X_$(2)):				\
 	@$$(call E, rustc: $$@)
 	$$(STAGE$(1)_T_$(2)_H_$(3)) -o $$@ $$< --test	\
 		-L "$$(RT_OUTPUT_DIR_$(2))"		\
-		-L "$$(LLVM_LIBDIR_$(2))"
+		-L "$$(LLVM_LIBDIR_$(2))"		\
+		$$(RUSTFLAGS_$(4))
 
 endef
 

src/librustc/middle/typeck/check/mod.rs

@@ -2365,7 +2365,8 @@ fn check_expr_with_unifier(fcx: &FnCtxt,
                     ty::ty_struct(base_id, ref substs) => {
                         debug!("struct named {}", ppaux::ty_to_str(tcx, base_t));
                         let fields = ty::lookup_struct_fields(tcx, base_id);
-                        lookup_field_ty(tcx, base_id, fields.as_slice(), field.node.name, &(*substs))
+                        lookup_field_ty(tcx, base_id, fields.as_slice(),
+                                        field.node.name, &(*substs))
                     }
                     _ => None
                 }