diff --git a/core-traits/lib.rs b/core-traits/lib.rs
index dacf95e6..48b5cb45 100644
--- a/core-traits/lib.rs
+++ b/core-traits/lib.rs
@@ -81,6 +81,13 @@ pub use value_type_set::{
     ValueTypeSet,
 };
 
+#[macro_export]
+macro_rules! bail {
+    ($e:expr) => (
+        return Err($e.into());
+    )
+}
+
 /// Represents one entid in the entid space.
 ///
 /// Per https://www.sqlite.org/datatype3.html (see also http://stackoverflow.com/a/8499544), SQLite
diff --git a/db-traits/errors.rs b/db-traits/errors.rs
index 2f6a8bb2..b03f3d2c 100644
--- a/db-traits/errors.rs
+++ b/db-traits/errors.rs
@@ -34,13 +34,6 @@ use core_traits::{
     ValueType,
 };
 
-#[macro_export]
-macro_rules! bail {
-    ($e:expr) => (
-        return Err($e.into());
-    )
-}
-
 pub type Result<T> = ::std::result::Result<T, DbError>;
 
 // TODO Error/ErrorKind pair
diff --git a/db/src/lib.rs b/db/src/lib.rs
index b316ad15..ef47275d 100644
--- a/db/src/lib.rs
+++ b/db/src/lib.rs
@@ -24,8 +24,8 @@ extern crate time;
 
 #[macro_use] extern crate edn;
 #[macro_use] extern crate mentat_core;
-#[macro_use] extern crate db_traits;
-extern crate core_traits;
+extern crate db_traits;
+#[macro_use] extern crate core_traits;
 extern crate mentat_sql;
 
 use std::iter::repeat;
diff --git a/public-traits/errors.rs b/public-traits/errors.rs
index a74b1851..2013ed71 100644
--- a/public-traits/errors.rs
+++ b/public-traits/errors.rs
@@ -44,13 +44,6 @@ use tolstoy_traits::errors::{
 
 pub type Result<T> = std::result::Result<T, MentatError>;
 
-#[macro_export]
-macro_rules! bail {
-    ($e:expr) => (
-        return Err($e.into());
-    )
-}
-
 #[derive(Debug, Fail)]
 pub enum MentatError {
     #[fail(display = "bad uuid {}", _0)]
diff --git a/query-algebrizer-traits/errors.rs b/query-algebrizer-traits/errors.rs
index 4e1db709..c1b360ef 100644
--- a/query-algebrizer-traits/errors.rs
+++ b/query-algebrizer-traits/errors.rs
@@ -25,13 +25,6 @@ use edn::query::{
 
 pub type Result<T> = std::result::Result<T, AlgebrizerError>;
 
-#[macro_export]
-macro_rules! bail {
-    ($e:expr) => (
-        return Err($e.into());
-    )
-}
-
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub enum BindingError {
     NoBoundVariable,
diff --git a/query-algebrizer/src/lib.rs b/query-algebrizer/src/lib.rs
index c9a4a1a7..de2e9b97 100644
--- a/query-algebrizer/src/lib.rs
+++ b/query-algebrizer/src/lib.rs
@@ -12,8 +12,8 @@ extern crate failure;
 
 extern crate edn;
 extern crate mentat_core;
-extern crate core_traits;
 #[macro_use]
+extern crate core_traits;
 extern crate query_algebrizer_traits;
 
 use std::collections::BTreeSet;
diff --git a/query-projector-traits/errors.rs b/query-projector-traits/errors.rs
index 8dd38516..e53f80e3 100644
--- a/query-projector-traits/errors.rs
+++ b/query-projector-traits/errors.rs
@@ -27,13 +27,6 @@ use aggregates::{
     SimpleAggregationOp,
 };
 
-#[macro_export]
-macro_rules! bail {
-    ($e:expr) => (
-        return Err($e.into());
-    )
-}
-
 pub type Result<T> = std::result::Result<T, ProjectorError>;
 
 #[derive(Debug, Fail)]
diff --git a/query-projector-traits/lib.rs b/query-projector-traits/lib.rs
index 01f315a6..30b14162 100644
--- a/query-projector-traits/lib.rs
+++ b/query-projector-traits/lib.rs
@@ -13,6 +13,7 @@ extern crate failure;
 extern crate failure_derive;
 extern crate rusqlite;
 
+#[macro_use]
 extern crate core_traits;
 extern crate db_traits;
 extern crate edn;
@@ -22,7 +23,6 @@ extern crate query_pull_traits;
 extern crate mentat_query_algebrizer;
 extern crate mentat_query_sql;
 
-#[macro_use]
 pub mod errors;
 pub mod aggregates;
 
diff --git a/query-projector/src/lib.rs b/query-projector/src/lib.rs
index 0bb1ac46..335d1e38 100644
--- a/query-projector/src/lib.rs
+++ b/query-projector/src/lib.rs
@@ -16,12 +16,12 @@ extern crate rusqlite;
 extern crate edn;
 extern crate mentat_core;
 extern crate db_traits;
+#[macro_use]
 extern crate core_traits;
 extern crate mentat_db;                 // For value conversion.
 extern crate mentat_query_algebrizer;
 extern crate mentat_query_pull;
 extern crate query_pull_traits;
-#[macro_use]
 extern crate query_projector_traits;
 extern crate mentat_query_sql;
 extern crate mentat_sql;
diff --git a/src/lib.rs b/src/lib.rs
index 1d812f75..41be6d1b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -21,6 +21,7 @@ extern crate uuid;
 
 pub extern crate edn;
 extern crate mentat_core;
+#[macro_use]
 extern crate core_traits;
 extern crate mentat_db;
 extern crate db_traits;
@@ -32,7 +33,6 @@ extern crate mentat_query_pull;
 extern crate query_pull_traits;
 extern crate sql_traits;
 extern crate mentat_sql;
-#[macro_use]
 extern crate public_traits;
 
 #[cfg(feature = "syncable")]
diff --git a/tolstoy-traits/errors.rs b/tolstoy-traits/errors.rs
index 82c2a0b2..6f9bcff9 100644
--- a/tolstoy-traits/errors.rs
+++ b/tolstoy-traits/errors.rs
@@ -16,13 +16,6 @@ use serde_json;
 
 use db_traits::errors::DbError;
 
-#[macro_export]
-macro_rules! bail {
-    ($e:expr) => (
-        return Err($e.into());
-    )
-}
-
 pub type Result<T> = ::std::result::Result<T, TolstoyError>;
 
 #[derive(Debug, Fail)]
diff --git a/tolstoy/src/lib.rs b/tolstoy/src/lib.rs
index 95ada1f4..bed77332 100644
--- a/tolstoy/src/lib.rs
+++ b/tolstoy/src/lib.rs
@@ -33,11 +33,11 @@ extern crate serde_json;
 
 extern crate mentat_core;
 extern crate db_traits;
+#[macro_use]
 extern crate core_traits;
 extern crate rusqlite;
 extern crate uuid;
 
-#[macro_use]
 extern crate tolstoy_traits;
 
 pub mod schema;
diff --git a/tools/cli/src/mentat_cli/command_parser.rs b/tools/cli/src/mentat_cli/command_parser.rs
index 69de29e3..852e451a 100644
--- a/tools/cli/src/mentat_cli/command_parser.rs
+++ b/tools/cli/src/mentat_cli/command_parser.rs
@@ -43,13 +43,6 @@ use mentat::{
     CacheDirection,
 };
 
-#[macro_export]
-macro_rules! bail {
-    ($e:expr) => (
-        return Err($e.into());
-    )
-}
-
 pub static COMMAND_CACHE: &'static str = &"cache";
 pub static COMMAND_CLOSE: &'static str = &"close";
 pub static COMMAND_EXIT_LONG: &'static str = &"exit";
diff --git a/tools/cli/src/mentat_cli/lib.rs b/tools/cli/src/mentat_cli/lib.rs
index ac1129a5..40f74012 100644
--- a/tools/cli/src/mentat_cli/lib.rs
+++ b/tools/cli/src/mentat_cli/lib.rs
@@ -30,6 +30,7 @@ extern crate time;
 
 extern crate mentat;
 extern crate edn;
+#[macro_use]
 extern crate core_traits;
 extern crate mentat_db;