first two levels work

.gitignore

@@ -0,0 +1,2 @@
+/target/
+**/*.rs.bk

.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CargoProjects">
+    <cargoProject FILE="$PROJECT_DIR$/Cargo.toml" />
+  </component>
+  <component name="ProjectRootManager">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+  <component name="RustProjectSettings">
+    <option name="toolchainHomeDirectory" value="$USER_HOME$/.cargo/bin" />
+  </component>
+</project>

.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/adventofcode2015.iml" filepath="$PROJECT_DIR$/adventofcode2015.iml" />
+    </modules>
+  </component>
+</project>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>

Cargo.lock

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+[[package]]
+name = "adventofcode2015"
+version = "0.1.0"
+

Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "adventofcode2015"
+version = "0.1.0"
+authors = ["Michael Preisach <michael@preisach.at>"]
+
+[dependencies]

adventofcode2015.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="RUST_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/examples" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/tests" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/benches" isTestSource="true" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

src/main.rs

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+mod day1;
+mod day2;
+mod tests;
+
+
+use std::fs::File;
+use std::io::Read;
+
+fn main() {
+    match File::open("day1.txt") {
+        Ok(mut f) => {
+            let mut input = String::new();
+            match f.read_to_string(&mut input) {
+                Ok(_) => (),
+                Err(msg) => println!("{}",msg),
+            }
+            let mut d1 = day1::Data::new();
+            d1.parse(input);
+            println!("day1 floor: {}", d1.floor());
+            println!("day1 basement: {}", d1.basement());
+        }
+        Err(msg) => println!("{}",msg),
+    };
+
+    match File::open("day2.txt") {
+        Ok(mut f) => {
+            let mut input = String::new();
+            match f.read_to_string(&mut input) {
+                Ok(_) => (),
+                Err(msg) => println!("{}",msg),
+            }
+            let mut d2 = day2::Data::new();
+            d2.parse(input);
+            println!("day2 paper: {}", d2.paper());
+            println!("day2 ribbon: {}", d2.ribbon());
+        }
+        Err(msg) => println!("{}",msg),
+    };
+}