Use criterion for benchmarks.

Not only is it a better benchmark tool, it also avoids depending on nightly
rustc.

Author: orium

.travis.yml

@@ -6,8 +6,6 @@ matrix:
     - rust: stable
     - rust: beta
     - rust: nightly
-      env:
-       - BENCH=1
 branches:
   only:
     - master
@@ -19,4 +17,4 @@ script:
       cargo build --verbose --no-default-features &&
       cargo build --verbose --features "$FEATURES" &&
       cargo test --verbose --features "$FEATURES" &&
-      ([ "$BENCH" != 1 ] || cargo bench --verbose --features "$FEATURES")
+      cargo bench --verbose --features "$FEATURES"

Cargo.toml

@@ -25,6 +25,7 @@ either = { version = "1.0", default-features = false }
 
 [dev-dependencies]
 rand = "0.7"
+criterion = "0.3"
 
 [dev-dependencies.quickcheck]
 version = "0.9"
@@ -39,3 +40,27 @@ use_std = []
 
 [profile]
 bench = { debug = true }
+
+[[bench]]
+name = "tuple_combinations"
+harness = false
+
+[[bench]]
+name = "tuples"
+harness = false
+
+[[bench]]
+name = "fold_specialization"
+harness = false
+
+[[bench]]
+name = "combinations_with_replacement"
+harness = false
+
+[[bench]]
+name = "tree_fold1"
+harness = false
+
+[[bench]]
+name = "bench1"
+harness = false