Run travis-fuzz on Rust 1.29.2 due to 1.30 breaking honggfuzz build

Author: TheBlueMatt

.travis.yml

@@ -3,6 +3,7 @@ rust:
   - stable
   - beta
   - 1.22.0
+  - 1.29.2
 cache: cargo
 
 before_install:
@@ -12,4 +13,4 @@ before_install:
 script:
   - cargo build --verbose
   - cargo test --verbose
-  - if [ "$(rustup show | grep default | grep stable)" != "" ]; then cd fuzz && cargo test --verbose && ./travis-fuzz.sh; fi
+  - if [ "$(rustup show | grep default | grep 1.29.2)" != "" ]; then cd fuzz && cargo test --verbose && ./travis-fuzz.sh; fi