Use env_logger instead of fern

Author: Mark-Simulacrum

Cargo.lock

@@ -8,10 +8,10 @@ edition = "2018"
 chrono = "0.4.6"
 either = "1.5.0"
 anyhow = "1"
-fern = "0.5.6"
 handlebars = "1.0.3"
 itertools = "0.8.0"
-log = { version = "0.4.5", features = [ "serde" ] }
+env_logger = "0.7"
+log = { version = "0.4.5", features = ["serde"] }
 rustup-available-packages = { path = "../library/" }
 serde = { version = "1", features = [ "derive" ] }
 serde_yaml = "0.8"

web/Cargo.toml

@@ -50,22 +50,6 @@ struct PathRenderData<'a> {
     target: &'a str,
 }
 
-fn setup_logger(verbosity: log::LevelFilter) -> Result<(), fern::InitError> {
-    fern::Dispatch::new()
-        .format(|out, message, record| {
-            out.finish(format_args!(
-                "[{}][{}] {}",
-                record.target(),
-                record.level(),
-                message
-            ))
-        })
-        .level(verbosity)
-        .chain(io::stderr())
-        .apply()?;
-    Ok(())
-}
-
 #[derive(Serialize)]
 struct TiersData<'a> {
     tiers: TiersTable<'a>,
@@ -197,7 +181,9 @@ fn main() -> anyhow::Result<()> {
             return Ok(());
         }
     };
-    setup_logger(config.verbosity)?;
+    env_logger::Builder::from_default_env()
+        .filter_level(config.verbosity)
+        .init();
 
     let mut data: AvailabilityData = Default::default();
     let cache = if let Some(cache_path) = config.cache_path.as_ref() {