Work around rental lint

tmandry · tmandry · commit f879c9c1c368 · 2021-05-08T21:39:14.000-07:00
From rust-lang/rust#84428 looks like it will be fixed soon.
diff --git a/.cargo/config.toml b/.cargo/config.toml
@@ -0,0 +1,3 @@
+[build]
+# TODO stop using rental
+rustflags = ["-Aproc_macro_back_compat"]

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+[build]`
	`2`	`+# TODO stop using rental`
	`3`	`+rustflags = ["-Aproc_macro_back_compat"]`