timereader: mio: Add another feature which we need

Cargo feature unification seemed to have been getting this one for us
previously, anyway.  But lacking it is a bit of a hazard.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/Cargo.toml b/Cargo.toml
index 5ce82df12ec66d4c47ccdc1fad755eb24936b3a5..d0a3f75330cbb32063a64a7f66b5802ffbbfac8a 100644 (file)
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -85,7 +85,7 @@ zip="0.5"
 enum-map     = { version="1"    , features=["serde"       ] }
 flexi_logger = { version="0.17" , features=["specfile"    ] }
 index_vec    = { version="0.1.1", features=["serde"       ] }
-mio          = { version="0.7",   features=["os-ext"      ] }
+mio          = { version="0.7",   features=["os-ext", "os-poll" ] }
 serde        = { version="1"    , features=["derive", "rc"] }
 strum        = { version="0.20" , features=["derive"      ] }