diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b5e87dd..b41f2bc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ jobs:
         include:
         - build: pinned
           os: ubuntu-18.04
-          rust: 1.34.0
+          rust: 1.46.0
         - build: stable
           os: ubuntu-18.04
           rust: stable
diff --git a/README.md b/README.md
index de2cec9..b360c04 100644
--- a/README.md
+++ b/README.md
@@ -135,7 +135,7 @@ default and thus no longer available.
 
 ### Minimum Rust version policy
 
-This crate's minimum supported `rustc` version is `1.34.0`.
+This crate's minimum supported `rustc` version is `1.46.0`.
 
 The current policy is that the minimum Rust version required to use this crate
 can be increased in minor version updates. For example, if `crate 1.0` requires
diff --git a/examples/btree_set_range.rs b/examples/btree_set_range.rs
index a89ffa5..0e7418b 100644
--- a/examples/btree_set_range.rs
+++ b/examples/btree_set_range.rs
@@ -1,9 +1,8 @@
-extern crate quickcheck;
-
-use quickcheck::{quickcheck, TestResult};
 use std::collections::BTreeSet;
 use std::ops::Bound::{self, *};
 
+use quickcheck::{quickcheck, TestResult};
+
 /// Covers every `std::ops::Range*` plus variants with exclusive start.
 type RangeAny<T> = (Bound<T>, Bound<T>);
 
@@ -11,6 +10,7 @@ type RangeAny<T> = (Bound<T>, Bound<T>);
 trait RangeBounds<T> {
     fn contains(&self, _: &T) -> bool;
 }
+
 impl<T: PartialOrd> RangeBounds<T> for RangeAny<T> {
     fn contains(&self, item: &T) -> bool {
         (match &self.0 {
diff --git a/examples/out_of_bounds.rs b/examples/out_of_bounds.rs
index f17519c..10da938 100644
--- a/examples/out_of_bounds.rs
+++ b/examples/out_of_bounds.rs
@@ -1,5 +1,3 @@
-extern crate quickcheck;
-
 use quickcheck::{quickcheck, TestResult};
 
 fn main() {
diff --git a/examples/reverse.rs b/examples/reverse.rs
index ffbd2b7..fff6e71 100644
--- a/examples/reverse.rs
+++ b/examples/reverse.rs
@@ -1,5 +1,3 @@
-extern crate quickcheck;
-
 use quickcheck::quickcheck;
 
 fn reverse<T: Clone>(xs: &[T]) -> Vec<T> {
diff --git a/examples/reverse_single.rs b/examples/reverse_single.rs
index 2384f9c..6112509 100644
--- a/examples/reverse_single.rs
+++ b/examples/reverse_single.rs
@@ -1,5 +1,3 @@
-extern crate quickcheck;
-
 use quickcheck::{quickcheck, TestResult};
 
 fn reverse<T: Clone>(xs: &[T]) -> Vec<T> {
diff --git a/examples/sieve.rs b/examples/sieve.rs
index 2079d56..f05b8e3 100644
--- a/examples/sieve.rs
+++ b/examples/sieve.rs
@@ -1,5 +1,3 @@
-extern crate quickcheck;
-
 use quickcheck::quickcheck;
 
 fn sieve(n: usize) -> Vec<usize> {
diff --git a/examples/sort.rs b/examples/sort.rs
index d85d4ba..0f495a0 100644
--- a/examples/sort.rs
+++ b/examples/sort.rs
@@ -1,16 +1,14 @@
 // This is a buggy quick sort implementation, QuickCheck will find the bug for
 // you.
 
-extern crate quickcheck;
-
 use quickcheck::quickcheck;
 
 fn smaller_than<T: Clone + Ord>(xs: &[T], pivot: &T) -> Vec<T> {
-    return xs.iter().filter(|&x| *x < *pivot).map(|x| x.clone()).collect();
+    xs.iter().filter(|&x| *x < *pivot).map(|x| x.clone()).collect()
 }
 
 fn larger_than<T: Clone + Ord>(xs: &[T], pivot: &T) -> Vec<T> {
-    return xs.iter().filter(|&x| *x > *pivot).map(|x| x.clone()).collect();
+    xs.iter().filter(|&x| *x > *pivot).map(|x| x.clone()).collect()
 }
 
 fn sortk<T: Clone + Ord>(x: &T, xs: &[T]) -> Vec<T> {
diff --git a/src/lib.rs b/src/lib.rs
index 34900ac..4202afb 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -6,12 +6,6 @@
 
 #![cfg_attr(feature = "i128", feature(i128_type, i128))]
 
-#[cfg(feature = "use_logging")]
-extern crate env_logger;
-#[cfg(feature = "use_logging")]
-#[macro_use]
-extern crate log;
-
 pub use crate::arbitrary::{empty_shrinker, single_shrinker, Arbitrary, Gen};
 pub use crate::tester::{quickcheck, QuickCheck, TestResult, Testable};
 
@@ -68,6 +62,12 @@ macro_rules! quickcheck {
 fn env_logger_init() -> Result<(), log::SetLoggerError> {
     env_logger::try_init()
 }
+#[cfg(feature = "use_logging")]
+macro_rules! info {
+    ($($tt:tt)*) => {
+        log::info!($($tt)*)
+    };
+}
 
 #[cfg(not(feature = "use_logging"))]
 fn env_logger_init() {}