build: disable doctests

In some cases, C comments end up looking like indented code blocks. rustdoc thinks those are doctests and tries to run them. Bindgen is working on a workaround, but in the meantime, the easiest solution is just disabling doctests crate-wide. See rust-lang/rust-bindgen#1313
meh · Dec 1, 2019 · 2d9cebf · 2d9cebf
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diff --git a/.Cargo.toml.swp b/.Cargo.toml.swp
diff --git a/Cargo.toml b/Cargo.toml
@@ -11,6 +11,10 @@ description = "FFI bindings to FFmpeg"
 repository  = "https://github.com/meh/rust-ffmpeg-sys"
 keywords    = ["audio", "video"]
 
+[lib]
+# Disable doctests as a workaround for https://github.com/rust-lang/rust-bindgen/issues/1313
+doctest = false
+
 [dependencies]
 libc = "0.2"