add a parallel rust builder

Author: pietroalbini

.gitignore

@@ -1 +1,2 @@
-*.o
+/target
+**/*.rs.bk

.travis.yml

@@ -1,7 +1,3 @@
 language: rust
 rust: nightly
-script: bash test.sh
-
-before_install:
-  - sudo apt-get update -qq
-  - sudo apt-get install -y debootstrap
+script: cargo run

Cargo.lock

@@ -0,0 +1,11 @@
+[package]
+name = "glacier"
+version = "0.1.0"
+authors = ["Pietro Albini <[email protected]>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+tempfile = "3.1.0"
+rayon = "1.1.0"