puts warnings mod behind a feature gate

Cargo.toml

@@ -1,19 +1,25 @@
 [package]
 name = "logging"
-version = "0.4.0"
+version = "0.4.1"
 authors = ["Jonathan Strong <jstrong@legis.io>"]
 
+[[example]]
+name = "zmq-logger"
+path = "examples/zmq-logger.rs"
+required-features = ["warnings"]
+
+[[example]]
+name = "hist-interval"
+path = "examples/hist-interval.rs"
+
 [dependencies]
 zmq = "0.8"
 influent = "0.4"
 chrono = { version = "0.4", features = ["serde"] }
 hyper = "0.10"
 termion = "1.4.0"
-# pub-sub = "2.0"
 slog = "2.0.6"
-# sloggers = "0.2"
 slog-term = "2"
-# chashmap = "2"
 ordermap = "0.3"
 fnv = "1"
 uuid = { version = "0.5", features = ["serde", "v4"] }
@@ -39,3 +45,4 @@ washington = []
 scholes = []
 no-influx-buffer = []
 disable-short-uuid = []
+warnings = []

src/influx.rs

@@ -24,6 +24,7 @@ use decimal::d128;
 use uuid::Uuid;
 
 use super::{nanos, file_logger, LOG_LEVEL};
+#[cfg(feature = "warnings")]
 use warnings::Warning;
 
 const WRITER_ADDR: &'static str = "ipc:///tmp/mm/influx";
@@ -511,6 +512,7 @@ pub fn serialize_owned(measurement: &OwnedMeasurement, line: &mut String) {
     }
 }
 
+#[cfg(feature = "warnings")]
 #[deprecated(since="0.4", note="Replace with InfluxWriter")]
 pub fn writer(warnings: Sender<Warning>) -> thread::JoinHandle<()> {
     thread::Builder::new().name("mm:inflx-wtr".into()).spawn(move || {
@@ -861,7 +863,7 @@ mod tests {
         });
     }
 
-
+    #[cfg(feature = "warnings")]
     #[test]
     #[ignore]
     fn it_spawns_a_writer_thread_and_sends_dummy_measurement_to_influxdb() {

src/lib.rs

@@ -37,6 +37,7 @@ use sloggers::file::FileLoggerBuilder;
 use slog::Drain;
 
 pub mod influx;
+#[cfg(feature = "warnings")]
 pub mod warnings;
 pub mod latency;
 pub mod hist;
@@ -74,12 +75,6 @@ pub fn truncating_file_logger(path: &str, level: Severity) -> slog::Logger {
     builder.build().unwrap()
 }
 
-// #[cfg(any(test, feature = "test"))]
-// pub fn file_logger(_: &str, _: Severity) -> slog::Logger {
-//     use slog::*;
-//     Logger::root(Discard, o!())
-// }
-
 #[deprecated(since="0.4.0", note="Turns out the file logger in sloggers uses async, \
                                   making the async here duplicative")]
 pub fn async_file_logger(path: &str, level: Severity) -> slog::Logger {