diff --git a/core/src/compile/state.rs b/core/src/compile/state.rs
index 3bb53c75..e061cda6 100644
--- a/core/src/compile/state.rs
+++ b/core/src/compile/state.rs
@@ -1,7 +1,6 @@
 use anyhow::Result;
 
 use std::collections::{BTreeMap, BTreeSet};
-use std::iter::FromIterator;
 
 use synth_gen::prelude::*;
 
diff --git a/gen/src/generator/mod.rs b/gen/src/generator/mod.rs
index aad18dd5..2731d5cc 100644
--- a/gen/src/generator/mod.rs
+++ b/gen/src/generator/mod.rs
@@ -1141,8 +1141,6 @@ where
 pub mod tests {
     use super::*;
 
-    use crate::Never;
-
     use rand::rngs::ThreadRng;
 
     #[inline]
diff --git a/synth/src/cli/csv/headers.rs b/synth/src/cli/csv/headers.rs
index 422215e7..14694298 100644
--- a/synth/src/cli/csv/headers.rs
+++ b/synth/src/cli/csv/headers.rs
@@ -278,7 +278,7 @@ mod tests {
     use super::*;
     use synth_core::schema::{
         number_content, BoolContent, FieldRef, NullContent, NumberContent, OneOfContent, RangeStep,
-        SameAsContent, VariantContent,
+        VariantContent,
     };
 
     use std::collections::BTreeMap;
diff --git a/synth/src/cli/export.rs b/synth/src/cli/export.rs
index 70dc6cc2..b013c643 100644
--- a/synth/src/cli/export.rs
+++ b/synth/src/cli/export.rs
@@ -8,7 +8,6 @@ use crate::cli::postgres::PostgresExportStrategy;
 use anyhow::{Context, Result};
 
 use std::cell::RefCell;
-use std::convert::TryFrom;
 use std::io::Write;
 use std::path::PathBuf;
 
diff --git a/synth/src/cli/import.rs b/synth/src/cli/import.rs
index 4684e0f3..05c1a616 100644
--- a/synth/src/cli/import.rs
+++ b/synth/src/cli/import.rs
@@ -1,4 +1,3 @@
-use std::convert::TryFrom;
 use std::path::PathBuf;
 
 use anyhow::Result;
diff --git a/synth/src/cli/import_utils.rs b/synth/src/cli/import_utils.rs
index 5c501bb4..c8a9098b 100644
--- a/synth/src/cli/import_utils.rs
+++ b/synth/src/cli/import_utils.rs
@@ -7,7 +7,6 @@ use async_std::task;
 use log::debug;
 use serde_json::Value;
 use sqlx::{Executor, Row};
-use std::convert::TryFrom;
 use synth_core::graph::json::synth_val_to_json;
 use synth_core::schema::content::number_content::U64;
 use synth_core::schema::{
diff --git a/synth/src/cli/mod.rs b/synth/src/cli/mod.rs
index 3bb9fe57..f12ad7fd 100644
--- a/synth/src/cli/mod.rs
+++ b/synth/src/cli/mod.rs
@@ -19,9 +19,7 @@ use anyhow::{Context, Result};
 use rand::RngCore;
 use serde::Serialize;
 use std::collections::HashMap;
-use std::convert::{TryFrom, TryInto};
 use std::io::Write;
-use std::iter::FromIterator;
 use std::path::PathBuf;
 use structopt::clap::AppSettings;
 use structopt::StructOpt;
diff --git a/synth/src/cli/telemetry.rs b/synth/src/cli/telemetry.rs
index e05e9cdd..48dd03ff 100644
--- a/synth/src/cli/telemetry.rs
+++ b/synth/src/cli/telemetry.rs
@@ -5,7 +5,6 @@ use owo_colors::OwoColorize;
 
 use std::cell::RefCell;
 use std::collections::hash_map::DefaultHasher;
-use std::convert::TryFrom;
 use std::future::Future;
 use std::hash::{Hash, Hasher};
 use std::io::{self, BufRead, Read, Write};
diff --git a/synth/src/datasource/mysql_datasource.rs b/synth/src/datasource/mysql_datasource.rs
index e19b4964..c01d7f24 100644
--- a/synth/src/datasource/mysql_datasource.rs
+++ b/synth/src/datasource/mysql_datasource.rs
@@ -10,8 +10,6 @@ use rust_decimal::Decimal;
 use sqlx::mysql::{MySqlColumn, MySqlPoolOptions, MySqlRow};
 use sqlx::{Column, MySql, Pool, Row, TypeInfo};
 use std::collections::BTreeMap;
-use std::convert::TryFrom;
-use std::prelude::rust_2015::Result::Ok;
 use synth_core::schema::number_content::{F64, I64, U64};
 use synth_core::schema::{
     ChronoValueType, DateTimeContent, NumberContent, RangeStep, RegexContent, StringContent,
diff --git a/synth/src/datasource/postgres_datasource.rs b/synth/src/datasource/postgres_datasource.rs
index d73794b0..12578289 100644
--- a/synth/src/datasource/postgres_datasource.rs
+++ b/synth/src/datasource/postgres_datasource.rs
@@ -11,7 +11,6 @@ use rust_decimal::Decimal;
 use sqlx::postgres::{PgColumn, PgPoolOptions, PgRow, PgTypeInfo, PgTypeKind};
 use sqlx::{Column, Executor, Pool, Postgres, Row, TypeInfo};
 use std::collections::BTreeMap;
-use std::convert::TryFrom;
 use synth_core::schema::number_content::{F32, F64, I16, I32, I64};
 use synth_core::schema::{
     ArrayContent, BoolContent, Categorical, ChronoValue, ChronoValueAndFormat, ChronoValueType,
diff --git a/synth/src/datasource/relational_datasource.rs b/synth/src/datasource/relational_datasource.rs
index c19bf397..99670b69 100644
--- a/synth/src/datasource/relational_datasource.rs
+++ b/synth/src/datasource/relational_datasource.rs
@@ -6,7 +6,6 @@ use futures::future::join_all;
 use sqlx::{
     query::Query, Arguments, Connection, Database, Encode, Executor, IntoArguments, Pool, Type,
 };
-use std::convert::TryFrom;
 use synth_core::{Content, Value};
 use synth_gen::value::Number;
 
diff --git a/synth/src/sampler.rs b/synth/src/sampler.rs
index 2f347dd3..f6af8b8d 100644
--- a/synth/src/sampler.rs
+++ b/synth/src/sampler.rs
@@ -2,7 +2,6 @@ use anyhow::Result;
 use indicatif::{ProgressBar, ProgressStyle};
 use rand::SeedableRng;
 use std::collections::BTreeMap;
-use std::convert::TryFrom;
 use synth_core::graph::json::synth_val_to_json;
 use synth_core::{Graph, Namespace, Value};
 use synth_gen::prelude::*;