Remove no longer required dependencies

With the update to rand 0.6.4 we no longer require the dependencies to
rustc_version, semver, and semver-parser. Hence, this change removes
them.

Delete subrepo rustc_version/:rustc_version
Delete subrepo semver/:semver
Delete subrepo semver-parser/:semver-parser

9 files changed, 0 insertions, 1528 deletions

diff --git a/semver-parser/.gitignore b/semver-parser/.gitignore
deleted file mode 100644
index a9d37c5..0000000
--- a/semver-parser/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-target
-Cargo.lock
diff --git a/semver-parser/Cargo.toml b/semver-parser/Cargo.toml
deleted file mode 100644
index c2be878..0000000
--- a/semver-parser/Cargo.toml
+++ /dev/null
@@ -1,11 +0,0 @@
-[package]
-name = "semver-parser"
-version = "0.7.0"
-authors = ["Steve Klabnik <steve@steveklabnik.com>"]
-license = "MIT/Apache-2.0"
-repository = "https://github.com/steveklabnik/semver-parser"
-homepage = "https://github.com/steveklabnik/semver-parser"
-documentation = "https://docs.rs/semver-parser"
-description = """
-Parsing of the semver spec.
-"""
diff --git a/semver-parser/LICENSE-APACHE b/semver-parser/LICENSE-APACHE
deleted file mode 100644
index 16fe87b..0000000
--- a/semver-parser/LICENSE-APACHE
+++ /dev/null
@@ -1,201 +0,0 @@
-                              Apache License
-                        Version 2.0, January 2004
-                     http://www.apache.org/licenses/
-
-TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
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-   Contributor provides its Contributions) on an "AS IS" BASIS,
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-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
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-Unless required by applicable law or agreed to in writing, software
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diff --git a/semver-parser/LICENSE-MIT b/semver-parser/LICENSE-MIT
deleted file mode 100644
index fb7494a..0000000
--- a/semver-parser/LICENSE-MIT
+++ /dev/null
@@ -1,25 +0,0 @@
-Copyright (c) 2016 Steve Klabnik
-
-Permission is hereby granted, free of charge, to any
-person obtaining a copy of this software and associated
-documentation files (the "Software"), to deal in the
-Software without restriction, including without
-limitation the rights to use, copy, modify, merge,
-publish, distribute, sublicense, and/or sell copies of
-the Software, and to permit persons to whom the Software
-is furnished to do so, subject to the following
-conditions:
-
-The above copyright notice and this permission notice
-shall be included in all copies or substantial portions
-of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
-ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
-TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
-PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
-SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
-IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
diff --git a/semver-parser/src/common.rs b/semver-parser/src/common.rs
deleted file mode 100644
index 267b4d9..0000000
--- a/semver-parser/src/common.rs
+++ /dev/null
@@ -1,66 +0,0 @@
-use version::Identifier;
-use recognize::{Recognize, Alt, OneOrMore, Inclusive, OneByte};
-use std::str::from_utf8;
-
-// by the time we get here, we know that it's all valid characters, so this doesn't need to return
-// a result or anything
-fn parse_meta(s: &str) -> Vec<Identifier> {
-    // Originally, I wanted to implement this method via calling parse, but parse is tolerant of
-    // leading zeroes, and we want anything with leading zeroes to be considered alphanumeric, not
-    // numeric. So the strategy is to check with a recognizer first, and then call parse once
-    // we've determined that it's a number without a leading zero.
-    s.split(".")
-        .map(|part| {
-            // another wrinkle: we made sure that any number starts with a
-            // non-zero. But there's a problem: an actual zero is a number, yet
-            // gets left out by this heuristic. So let's also check for the
-            // single, lone zero.
-            if is_alpha_numeric(part) {
-                Identifier::AlphaNumeric(part.to_string())
-            } else {
-                // we can unwrap here because we know it is only digits due to the regex
-                Identifier::Numeric(part.parse().unwrap())
-            }
-        }).collect()
-}
-
-// parse optional metadata (preceded by the prefix character)
-pub fn parse_optional_meta(s: &[u8], prefix_char: u8)-> Result<(Vec<Identifier>, usize), String> {
-    if let Some(len) = prefix_char.p(s) {
-        let start = len;
-        if let Some(len) = letters_numbers_dash_dot(&s[start..]) {
-            let end = start + len;
-            Ok((parse_meta(from_utf8(&s[start..end]).unwrap()), end))
-        } else {
-            Err("Error parsing prerelease".to_string())
-        }
-    } else {
-        Ok((Vec::new(), 0))
-    }
-}
-
-pub fn is_alpha_numeric(s: &str) -> bool {
-    if let Some((_val, len)) = numeric_identifier(s.as_bytes()) {
-        // Return true for number with leading zero
-        // Note: doing it this way also handily makes overflow fail over.
-        len != s.len()
-    } else {
-        true
-    }
-}
-
-// Note: could plumb overflow error up to return value as Result
-pub fn numeric_identifier(s: &[u8]) -> Option<(u64, usize)> {
-    if let Some(len) = Alt(b'0', OneOrMore(Inclusive(b'0'..b'9'))).p(s) {
-        from_utf8(&s[0..len]).unwrap().parse().ok().map(|val| (val, len))
-    } else {
-        None
-    }
-}
-
-pub fn letters_numbers_dash_dot(s: &[u8]) -> Option<usize> {
-    OneOrMore(OneByte(|c| c == b'-' || c == b'.' ||
-        (b'0' <= c && c <= b'9') ||
-        (b'a' <= c && c <= b'z') ||
-        (b'A' <= c && c <= b'Z'))).p(s)
-}
diff --git a/semver-parser/src/lib.rs b/semver-parser/src/lib.rs
deleted file mode 100644
index 3b0d8f0..0000000
--- a/semver-parser/src/lib.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-pub mod version;
-pub mod range;
-
-// for private stuff the two share
-mod common;
-
-// for recognizer combinators
-mod recognize;
diff --git a/semver-parser/src/range.rs b/semver-parser/src/range.rs
deleted file mode 100644
index 858be9f..0000000
--- a/semver-parser/src/range.rs
+++ /dev/null
@@ -1,696 +0,0 @@
-use common::{self, numeric_identifier, letters_numbers_dash_dot};
-use version::Identifier;
-use std::str::{FromStr, from_utf8};
-use recognize::*;
-
-#[derive(Debug)]
-pub struct VersionReq {
-    pub predicates: Vec<Predicate>,
-}
-
-#[derive(PartialEq,Debug)]
-pub enum WildcardVersion {
-    Major,
-    Minor,
-    Patch,
-}
-
-#[derive(PartialEq,Debug)]
-pub enum Op {
-    Ex, // Exact
-    Gt, // Greater than
-    GtEq, // Greater than or equal to
-    Lt, // Less than
-    LtEq, // Less than or equal to
-    Tilde, // e.g. ~1.0.0
-    Compatible, // compatible by definition of semver, indicated by ^
-    Wildcard(WildcardVersion), // x.y.*, x.*, *
-}
-
-impl FromStr for Op {
-    type Err = String;
-
-    fn from_str(s: &str) -> Result<Op, String> {
-        match s {
-            "=" => Ok(Op::Ex),
-            ">" => Ok(Op::Gt),
-            ">=" => Ok(Op::GtEq),
-            "<" => Ok(Op::Lt),
-            "<=" => Ok(Op::LtEq),
-            "~" => Ok(Op::Tilde),
-            "^" => Ok(Op::Compatible),
-            _ => Err(String::from("Could not parse Op")),
-        }
-    }
-}
-
-#[derive(PartialEq,Debug)]
-pub struct Predicate {
-    pub op: Op,
-    pub major: u64,
-    pub minor: Option<u64>,
-    pub patch: Option<u64>,
-    pub pre: Vec<Identifier>,
-}
-
-fn numeric_or_wild(s: &[u8]) -> Option<(Option<u64>, usize)> {
-    if let Some((val, len)) = numeric_identifier(s) {
-        Some((Some(val), len))
-    } else if let Some(len) = OneOf(b"*xX").p(s) {
-        Some((None, len))
-    } else {
-        None
-    }
-}
-
-fn dot_numeric_or_wild(s: &[u8]) -> Option<(Option<u64>, usize)> {
-    b'.'.p(s).and_then(|len|
-        numeric_or_wild(&s[len..]).map(|(val, len2)| (val, len + len2))
-    )
-}
-
-fn operation(s: &[u8]) -> Option<(Op, usize)> {
-    if let Some(len) = "=".p(s) {
-        Some((Op::Ex, len))
-    } else if let Some(len) = ">=".p(s) {
-        Some((Op::GtEq, len))
-    } else if let Some(len) = ">".p(s) {
-        Some((Op::Gt, len))
-    } else if let Some(len) = "<=".p(s) {
-        Some((Op::LtEq, len))
-    } else if let Some(len) = "<".p(s) {
-        Some((Op::Lt, len))
-    } else if let Some(len) = "~".p(s) {
-        Some((Op::Tilde, len))
-    } else if let Some(len) = "^".p(s) {
-        Some((Op::Compatible, len))
-    } else {
-        None
-    }
-}
-
-fn whitespace(s: &[u8]) -> Option<usize> {
-    ZeroOrMore(OneOf(b"\t\r\n ")).p(s)
-}
-
-pub fn parse_predicate(range: &str) -> Result<Predicate, String> {
-    let s = range.trim().as_bytes();
-    let mut i = 0;
-    let mut operation = if let Some((op, len)) = operation(&s[i..]) {
-        i += len;
-        op
-    } else {
-        // operations default to Compatible
-        Op::Compatible
-    };
-    if let Some(len) = whitespace.p(&s[i..]) {
-        i += len;
-    }
-    let major = if let Some((major, len)) = numeric_identifier(&s[i..]) {
-        i += len;
-        major
-    } else {
-        return Err("Error parsing major version number: ".to_string());
-    };
-    let minor = if let Some((minor, len)) = dot_numeric_or_wild(&s[i..]) {
-        i += len;
-        if minor.is_none() {
-            operation = Op::Wildcard(WildcardVersion::Minor);
-        }
-        minor
-    } else {
-        None
-    };
-    let patch = if let Some((patch, len)) = dot_numeric_or_wild(&s[i..]) {
-        i += len;
-        if patch.is_none() {
-            operation = Op::Wildcard(WildcardVersion::Patch);
-        }
-        patch
-    } else {
-        None
-    };
-    let (pre, pre_len) = common::parse_optional_meta(&s[i..], b'-')?;
-    i += pre_len;
-    if let Some(len) = (b'+', letters_numbers_dash_dot).p(&s[i..]) {
-        i += len;
-    }
-    if i != s.len() {
-        return Err("Extra junk after valid predicate: ".to_string() +
-            from_utf8(&s[i..]).unwrap());
-    }
-    Ok(Predicate {
-        op: operation,
-        major: major,
-        minor: minor,
-        patch: patch,
-        pre: pre,
-    })
-}
-
-pub fn parse(ranges: &str) -> Result<VersionReq, String> {
-    // null is an error
-    if ranges == "\0" {
-        return Err(String::from("Null is not a valid VersionReq"));
-    }
-
-    // an empty range is a major version wildcard
-    // so is a lone * or x of either capitalization
-    if (ranges == "")
-    || (ranges == "*")
-    || (ranges == "x")
-    || (ranges == "X") {
-        return Ok(VersionReq {
-            predicates: vec![Predicate {
-                op: Op::Wildcard(WildcardVersion::Major),
-                major: 0,
-                minor: None,
-                patch: None,
-                pre: Vec::new(),
-            }],
-        });
-    }
-
-
-    let ranges = ranges.trim();
-
-    let predicates: Result<Vec<_>, String> = ranges
-        .split(",")
-        .map(|range| {
-            parse_predicate(range)
-        })
-        .collect();
-
-    let predicates = try!(predicates);
-
-    if predicates.len() == 0 {
-        return Err(String::from("VersionReq did not parse properly"));
-    }
-
-    Ok(VersionReq {
-        predicates: predicates,
-    })
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use range;
-    use version::Identifier;
-
-    #[test]
-    fn test_parsing_default() {
-        let r = range::parse("1.0.0").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Compatible,
-                major: 1,
-                minor: Some(0),
-                patch: Some(0),
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    fn test_parsing_exact_01() {
-        let r = range::parse("=1.0.0").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Ex,
-                major: 1,
-                minor: Some(0),
-                patch: Some(0),
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    fn test_parsing_exact_02() {
-        let r = range::parse("=0.9.0").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Ex,
-                major: 0,
-                minor: Some(9),
-                patch: Some(0),
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    fn test_parsing_exact_03() {
-        let r = range::parse("=0.1.0-beta2.a").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Ex,
-                major: 0,
-                minor: Some(1),
-                patch: Some(0),
-                pre: vec![Identifier::AlphaNumeric(String::from("beta2")),
-                          Identifier::AlphaNumeric(String::from("a"))],
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    pub fn test_parsing_greater_than() {
-        let r = range::parse("> 1.0.0").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Gt,
-                major: 1,
-                minor: Some(0),
-                patch: Some(0),
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    pub fn test_parsing_greater_than_01() {
-        let r = range::parse(">= 1.0.0").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::GtEq,
-                major: 1,
-                minor: Some(0),
-                patch: Some(0),
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    pub fn test_parsing_greater_than_02() {
-        let r = range::parse(">= 2.1.0-alpha2").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::GtEq,
-                major: 2,
-                minor: Some(1),
-                patch: Some(0),
-                pre: vec![Identifier::AlphaNumeric(String::from("alpha2"))],
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    pub fn test_parsing_less_than() {
-        let r = range::parse("< 1.0.0").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Lt,
-                major: 1,
-                minor: Some(0),
-                patch: Some(0),
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    pub fn test_parsing_less_than_eq() {
-        let r = range::parse("<= 2.1.0-alpha2").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::LtEq,
-                major: 2,
-                minor: Some(1),
-                patch: Some(0),
-                pre: vec![Identifier::AlphaNumeric(String::from("alpha2"))],
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    pub fn test_parsing_tilde() {
-        let r = range::parse("~1").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Tilde,
-                major: 1,
-                minor: None,
-                patch: None,
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    pub fn test_parsing_compatible() {
-        let r = range::parse("^0").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Compatible,
-                major: 0,
-                minor: None,
-                patch: None,
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    fn test_parsing_blank() {
-        let r = range::parse("").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Wildcard(WildcardVersion::Major),
-                major: 0,
-                minor: None,
-                patch: None,
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    fn test_parsing_wildcard() {
-        let r = range::parse("*").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Wildcard(WildcardVersion::Major),
-                major: 0,
-                minor: None,
-                patch: None,
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    fn test_parsing_x() {
-        let r = range::parse("x").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Wildcard(WildcardVersion::Major),
-                major: 0,
-                minor: None,
-                patch: None,
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    fn test_parsing_capital_x() {
-        let r = range::parse("X").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Wildcard(WildcardVersion::Major),
-                major: 0,
-                minor: None,
-                patch: None,
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    fn test_parsing_minor_wildcard_star() {
-        let r = range::parse("1.*").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Wildcard(WildcardVersion::Minor),
-                major: 1,
-                minor: None,
-                patch: None,
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    fn test_parsing_minor_wildcard_x() {
-        let r = range::parse("1.x").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Wildcard(WildcardVersion::Minor),
-                major: 1,
-                minor: None,
-                patch: None,
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    fn test_parsing_minor_wildcard_capital_x() {
-        let r = range::parse("1.X").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Wildcard(WildcardVersion::Minor),
-                major: 1,
-                minor: None,
-                patch: None,
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    fn test_parsing_patch_wildcard_star() {
-        let r = range::parse("1.2.*").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Wildcard(WildcardVersion::Patch),
-                major: 1,
-                minor: Some(2),
-                patch: None,
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    fn test_parsing_patch_wildcard_x() {
-        let r = range::parse("1.2.x").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Wildcard(WildcardVersion::Patch),
-                major: 1,
-                minor: Some(2),
-                patch: None,
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    fn test_parsing_patch_wildcard_capital_x() {
-        let r = range::parse("1.2.X").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Wildcard(WildcardVersion::Patch),
-                major: 1,
-                minor: Some(2),
-                patch: None,
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-    }
-
-    #[test]
-    pub fn test_multiple_01() {
-        let r = range::parse("> 0.0.9, <= 2.5.3").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Gt,
-                major: 0,
-                minor: Some(0),
-                patch: Some(9),
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-
-        assert_eq!(Predicate {
-                op: Op::LtEq,
-                major: 2,
-                minor: Some(5),
-                patch: Some(3),
-                pre: Vec::new(),
-            },
-            r.predicates[1]
-        );
-    }
-
-    #[test]
-    pub fn test_multiple_02() {
-        let r = range::parse("0.3.0, 0.4.0").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Compatible,
-                major: 0,
-                minor: Some(3),
-                patch: Some(0),
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-
-        assert_eq!(Predicate {
-                op: Op::Compatible,
-                major: 0,
-                minor: Some(4),
-                patch: Some(0),
-                pre: Vec::new(),
-            },
-            r.predicates[1]
-        );
-    }
-
-    #[test]
-    pub fn test_multiple_03() {
-        let r = range::parse("<= 0.2.0, >= 0.5.0").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::LtEq,
-                major: 0,
-                minor: Some(2),
-                patch: Some(0),
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-
-        assert_eq!(Predicate {
-                op: Op::GtEq,
-                major: 0,
-                minor: Some(5),
-                patch: Some(0),
-                pre: Vec::new(),
-            },
-            r.predicates[1]
-        );
-    }
-
-    #[test]
-    pub fn test_multiple_04() {
-        let r = range::parse("0.1.0, 0.1.4, 0.1.6").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::Compatible,
-                major: 0,
-                minor: Some(1),
-                patch: Some(0),
-                pre: Vec::new(),
-            },
-            r.predicates[0]
-        );
-
-        assert_eq!(Predicate {
-                op: Op::Compatible,
-                major: 0,
-                minor: Some(1),
-                patch: Some(4),
-                pre: Vec::new(),
-            },
-            r.predicates[1]
-        );
-
-        assert_eq!(Predicate {
-                op: Op::Compatible,
-                major: 0,
-                minor: Some(1),
-                patch: Some(6),
-                pre: Vec::new(),
-            },
-            r.predicates[2]
-        );
-    }
-
-    #[test]
-    pub fn test_multiple_05() {
-        let r = range::parse(">=0.5.1-alpha3, <0.6").unwrap();
-
-        assert_eq!(Predicate {
-                op: Op::GtEq,
-                major: 0,
-                minor: Some(5),
-                patch: Some(1),
-                pre: vec![Identifier::AlphaNumeric(String::from("alpha3"))],
-            },
-            r.predicates[0]
-        );
-
-        assert_eq!(Predicate {
-                op: Op::Lt,
-                major: 0,
-                minor: Some(6),
-                patch: None,
-                pre: Vec::new(),
-            },
-            r.predicates[1]
-        );
-    }
-
-    #[test]
-    fn test_parse_build_metadata_with_predicate() {
-        assert_eq!(range::parse("^1.2.3+meta").unwrap().predicates[0].op,
-                   Op::Compatible);
-        assert_eq!(range::parse("~1.2.3+meta").unwrap().predicates[0].op,
-                   Op::Tilde);
-        assert_eq!(range::parse("=1.2.3+meta").unwrap().predicates[0].op,
-                   Op::Ex);
-        assert_eq!(range::parse("<=1.2.3+meta").unwrap().predicates[0].op,
-                   Op::LtEq);
-        assert_eq!(range::parse(">=1.2.3+meta").unwrap().predicates[0].op,
-                   Op::GtEq);
-        assert_eq!(range::parse("<1.2.3+meta").unwrap().predicates[0].op,
-                   Op::Lt);
-        assert_eq!(range::parse(">1.2.3+meta").unwrap().predicates[0].op,
-                   Op::Gt);
-    }
-
-    #[test]
-    pub fn test_parse_errors() {
-        assert!(range::parse("\0").is_err());
-        assert!(range::parse(">= >= 0.0.2").is_err());
-        assert!(range::parse(">== 0.0.2").is_err());
-        assert!(range::parse("a.0.0").is_err());
-        assert!(range::parse("1.0.0-").is_err());
-        assert!(range::parse(">=").is_err());
-        assert!(range::parse("> 0.1.0,").is_err());
-        assert!(range::parse("> 0.3.0, ,").is_err());
-    }
-
-    #[test]
-    pub fn test_large_major_version() {
-        assert!(range::parse("18446744073709551617.0.0").is_err());
-    }
-
-    #[test]
-    pub fn test_large_minor_version() {
-        assert!(range::parse("0.18446744073709551617.0").is_err());
-    }
-
-    #[test]
-    pub fn test_large_patch_version() {
-        assert!(range::parse("0.0.18446744073709551617").is_err());
-    }
-}
diff --git a/semver-parser/src/recognize.rs b/semver-parser/src/recognize.rs
deleted file mode 100644
index c0dd771..0000000
--- a/semver-parser/src/recognize.rs
+++ /dev/null
@@ -1,154 +0,0 @@
-// Copyright 2017 Google Inc. All rights reserved.
-//
-// Licensed under either of MIT or Apache License, Version 2.0,
-// at your option.
-//
-// Use of this source code is governed by a MIT-style
-// license that can be found in the LICENSE file or at
-// https://opensource.org/licenses/MIT.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-//! Simple recognizer combinators.
-
-// This version is similar to a similar one in the "lang" module of
-// xi-editor, but is stripped down to only the needed combinators.
-
-use std::ops;
-
-pub trait Recognize {
-    fn p(&self, s: &[u8]) -> Option<usize>;
-}
-
-impl<F: Fn(&[u8]) -> Option<usize>> Recognize for F {
-    #[inline(always)]
-    fn p(&self, s: &[u8]) -> Option<usize> {
-        self(s)
-    }
-}
-
-pub struct OneByte<F>(pub F);
-
-impl<F: Fn(u8) -> bool> Recognize for OneByte<F> {
-    #[inline(always)]
-    fn p(&self, s: &[u8]) -> Option<usize> {
-        if s.is_empty() || !self.0(s[0]) {
-            None
-        } else {
-            Some(1)
-        }
-    }
-}
-
-impl Recognize for u8 {
-    #[inline(always)]
-    fn p(&self, s: &[u8]) -> Option<usize> {
-        OneByte(|b| b == *self).p(s)
-    }
-}
-
-/// Use Inclusive(a..b) to indicate an inclusive range. When a...b syntax becomes
-/// stable, we can get rid of this and switch to that.
-pub struct Inclusive<T>(pub T);
-
-impl Recognize for Inclusive<ops::Range<u8>> {
-    #[inline(always)]
-    fn p(&self, s: &[u8]) -> Option<usize> {
-        OneByte(|x| x >= self.0.start && x <= self.0.end).p(s)
-    }
-}
-
-impl<'a> Recognize for &'a [u8] {
-    #[inline(always)]
-    fn p(&self, s: &[u8]) -> Option<usize> {
-        let len = self.len();
-        if s.len() >= len && &s[..len] == *self {
-            Some(len)
-        } else {
-            None
-        }
-    }
-}
-
-impl<'a> Recognize for &'a str {
-    #[inline(always)]
-    fn p(&self, s: &[u8]) -> Option<usize> {
-        self.as_bytes().p(s)
-    }
-}
-
-impl<P1: Recognize, P2: Recognize> Recognize for (P1, P2) {
-    #[inline(always)]
-    fn p(&self, s: &[u8]) -> Option<usize> {
-        self.0.p(s).and_then(|len1|
-            self.1.p(&s[len1..]).map(|len2|
-                len1 + len2))
-    }
-}
-
-/// Choice from two heterogeneous alternatives.
-pub struct Alt<P1, P2>(pub P1, pub P2);
-
-impl<P1: Recognize, P2: Recognize> Recognize for Alt<P1, P2> {
-    #[inline(always)]
-    fn p(&self, s: &[u8]) -> Option<usize> {
-        self.0.p(s).or_else(|| self.1.p(s))
-    }
-}
-
-/// Choice from a homogenous slice of parsers.
-pub struct OneOf<'a, P: 'a>(pub &'a [P]);
-
-impl<'a, P: Recognize> Recognize for OneOf<'a, P> {
-    #[inline]
-    fn p(&self, s: &[u8]) -> Option<usize> {
-        for ref p in self.0 {
-            if let Some(len) = p.p(s) {
-                return Some(len);
-            }
-        }
-        None
-    }
-}
-
-pub struct OneOrMore<P>(pub P);
-
-impl<P: Recognize> Recognize for OneOrMore<P> {
-    #[inline]
-    fn p(&self, s: &[u8]) -> Option<usize> {
-        let mut i = 0;
-        let mut count = 0;
-        while let Some(len) = self.0.p(&s[i..]) {
-            i += len;
-            count += 1;
-        }
-        if count >= 1 {
-            Some(i)
-        } else {
-            None
-        }
-    }
-}
-
-pub struct ZeroOrMore<P>(pub P);
-
-impl<P: Recognize> Recognize for ZeroOrMore<P> {
-    #[inline]
-    fn p(&self, s: &[u8]) -> Option<usize> {
-        let mut i = 0;
-        while let Some(len) = self.0.p(&s[i..]) {
-            i += len;
-        }
-        Some(i)
-    }
-}
diff --git a/semver-parser/src/version.rs b/semver-parser/src/version.rs
deleted file mode 100644
index 570f947..0000000
--- a/semver-parser/src/version.rs
+++ /dev/null
@@ -1,365 +0,0 @@
-use std::fmt;
-use std::str::from_utf8;
-
-use recognize::*;
-
-use common::{self, numeric_identifier};
-
-#[derive(Clone, Debug, PartialEq, Eq)]
-pub struct Version {
-    pub major: u64,
-    pub minor: u64,
-    pub patch: u64,
-    pub pre: Vec<Identifier>,
-    pub build: Vec<Identifier>,
-}
-
-#[derive(Clone, Debug, PartialEq, Eq)]
-pub enum Identifier {
-    /// An identifier that's solely numbers.
-    Numeric(u64),
-    /// An identifier with letters and numbers.
-    AlphaNumeric(String),
-}
-
-pub fn parse(version: &str) -> Result<Version, String> {
-    let s = version.trim().as_bytes();
-    let mut i = 0;
-    let major = if let Some((major, len)) = numeric_identifier(&s[i..]) {
-        i += len;
-        major
-    } else {
-        return Err("Error parsing major identifier".to_string());
-    };
-    if let Some(len) = b'.'.p(&s[i..]) {
-        i += len;
-    } else {
-        return Err("Expected dot".to_string());
-    }
-    let minor = if let Some((minor, len)) = numeric_identifier(&s[i..]) {
-        i += len;
-        minor
-    } else {
-        return Err("Error parsing minor identifier".to_string());
-    };
-    if let Some(len) = b'.'.p(&s[i..]) {
-        i += len;
-    } else {
-        return Err("Expected dot".to_string());
-    }
-    let patch = if let Some((patch, len)) = numeric_identifier(&s[i..]) {
-        i += len;
-        patch
-    } else {
-        return Err("Error parsing patch identifier".to_string());
-    };
-    let (pre, pre_len) = common::parse_optional_meta(&s[i..], b'-')?;
-    i += pre_len;
-    let (build, build_len) = common::parse_optional_meta(&s[i..], b'+')?;
-    i += build_len;
-    if i != s.len() {
-        return Err("Extra junk after valid version: ".to_string() +
-            from_utf8(&s[i..]).unwrap());
-    }
-    Ok(Version {
-        major: major,
-        minor: minor,
-        patch: patch,
-        pre: pre,
-        build: build,
-    })
-}
-
-impl fmt::Display for Version {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        try!(write!(f, "{}.{}.{}", self.major, self.minor, self.patch));
-        if !self.pre.is_empty() {
-            let strs: Vec<_> =
-                self.pre.iter().map(ToString::to_string).collect();
-            try!(write!(f, "-{}", strs.join(".")));
-        }
-        if !self.build.is_empty() {
-            let strs: Vec<_> =
-                self.build.iter().map(ToString::to_string).collect();
-            try!(write!(f, "+{}", strs.join(".")));
-        }
-        Ok(())
-    }
-}
-
-impl fmt::Display for Identifier {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        match *self {
-            Identifier::Numeric(ref id) => id.fmt(f),
-            Identifier::AlphaNumeric(ref id) => id.fmt(f),
-        }
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use version;
-    use super::*;
-
-    #[test]
-    fn parse_empty() {
-        let version = "";
-
-        let parsed = version::parse(version);
-
-        assert!(parsed.is_err(), "empty string incorrectly considered a valid parse");
-    }
-
-    #[test]
-    fn parse_blank() {
-        let version = "  ";
-
-        let parsed = version::parse(version);
-
-        assert!(parsed.is_err(), "blank string incorrectly considered a valid parse");
-    }
-
-    #[test]
-    fn parse_no_minor_patch() {
-        let version = "1";
-
-        let parsed = version::parse(version);
-
-        assert!(parsed.is_err(), format!("'{}' incorrectly considered a valid parse", version));
-    }
-
-    #[test]
-    fn parse_no_patch() {
-        let version = "1.2";
-
-        let parsed = version::parse(version);
-
-        assert!(parsed.is_err(), format!("'{}' incorrectly considered a valid parse", version));
-    }
-
-    #[test]
-    fn parse_empty_pre() {
-        let version = "1.2.3-";
-
-        let parsed = version::parse(version);
-
-        assert!(parsed.is_err(), format!("'{}' incorrectly considered a valid parse", version));
-    }
-
-    #[test]
-    fn parse_letters() {
-        let version = "a.b.c";
-
-        let parsed = version::parse(version);
-
-        assert!(parsed.is_err(), format!("'{}' incorrectly considered a valid parse", version));
-    }
-
-    #[test]
-    fn parse_with_letters() {
-        let version = "1.2.3 a.b.c";
-
-        let parsed = version::parse(version);
-
-        assert!(parsed.is_err(), format!("'{}' incorrectly considered a valid parse", version));
-    }
-
-    #[test]
-    fn parse_basic_version() {
-        let version = "1.2.3";
-
-        let parsed = version::parse(version).unwrap();
-
-        assert_eq!(1, parsed.major);
-        assert_eq!(2, parsed.minor);
-        assert_eq!(3, parsed.patch);
-    }
-
-    #[test]
-    fn parse_trims_input() {
-        let version = "  1.2.3  ";
-
-        let parsed = version::parse(version).unwrap();
-
-        assert_eq!(1, parsed.major);
-        assert_eq!(2, parsed.minor);
-        assert_eq!(3, parsed.patch);
-    }
-
-    #[test]
-    fn parse_no_major_leading_zeroes() {
-        let version = "01.0.0";
-
-        let parsed = version::parse(version);
-
-        assert!(parsed.is_err(), "01 incorrectly considered a valid major version");
-    }
-
-    #[test]
-    fn parse_no_minor_leading_zeroes() {
-        let version = "0.01.0";
-
-        let parsed = version::parse(version);
-
-        assert!(parsed.is_err(), "01 incorrectly considered a valid minor version");
-    }
-
-    #[test]
-    fn parse_no_patch_leading_zeroes() {
-        let version = "0.0.01";
-
-        let parsed = version::parse(version);
-
-        assert!(parsed.is_err(), "01 incorrectly considered a valid patch version");
-    }
-
-    #[test]
-    fn parse_no_major_overflow() {
-        let version = "98765432109876543210.0.0";
-
-        let parsed = version::parse(version);
-
-        assert!(parsed.is_err(), "98765432109876543210 incorrectly considered a valid major version");
-    }
-
-    #[test]
-    fn parse_no_minor_overflow() {
-        let version = "0.98765432109876543210.0";
-
-        let parsed = version::parse(version);
-
-        assert!(parsed.is_err(), "98765432109876543210 incorrectly considered a valid minor version");
-    }
-
-    #[test]
-    fn parse_no_patch_overflow() {
-        let version = "0.0.98765432109876543210";
-
-        let parsed = version::parse(version);
-
-        assert!(parsed.is_err(), "98765432109876543210 incorrectly considered a valid patch version");
-    }
-
-    #[test]
-    fn parse_basic_prerelease() {
-        let version = "1.2.3-pre";
-
-        let parsed = version::parse(version).unwrap();
-
-        let expected_pre = vec![Identifier::AlphaNumeric(String::from("pre"))];
-        assert_eq!(expected_pre, parsed.pre);
-    }
-
-    #[test]
-    fn parse_prerelease_alphanumeric() {
-        let version = "1.2.3-alpha1";
-
-        let parsed = version::parse(version).unwrap();
-
-        let expected_pre = vec![Identifier::AlphaNumeric(String::from("alpha1"))];
-        assert_eq!(expected_pre, parsed.pre);
-    }
-
-    #[test]
-    fn parse_prerelease_zero() {
-        let version = "1.2.3-pre.0";
-
-        let parsed = version::parse(version).unwrap();
-
-        let expected_pre = vec![Identifier::AlphaNumeric(String::from("pre")),
-                                Identifier::Numeric(0)];
-        assert_eq!(expected_pre, parsed.pre);
-    }
-
-    #[test]
-    fn parse_basic_build() {
-        let version = "1.2.3+build";
-
-        let parsed = version::parse(version).unwrap();
-
-        let expected_build = vec![Identifier::AlphaNumeric(String::from("build"))];
-        assert_eq!(expected_build, parsed.build);
-    }
-
-    #[test]
-    fn parse_build_alphanumeric() {
-        let version = "1.2.3+build5";
-
-        let parsed = version::parse(version).unwrap();
-
-        let expected_build = vec![Identifier::AlphaNumeric(String::from("build5"))];
-        assert_eq!(expected_build, parsed.build);
-    }
-
-    #[test]
-    fn parse_pre_and_build() {
-        let version = "1.2.3-alpha1+build5";
-
-        let parsed = version::parse(version).unwrap();
-
-        let expected_pre = vec![Identifier::AlphaNumeric(String::from("alpha1"))];
-        assert_eq!(expected_pre, parsed.pre);
-
-        let expected_build = vec![Identifier::AlphaNumeric(String::from("build5"))];
-        assert_eq!(expected_build, parsed.build);
-    }
-
-    #[test]
-    fn parse_complex_metadata_01() {
-        let version = "1.2.3-1.alpha1.9+build5.7.3aedf  ";
-
-        let parsed = version::parse(version).unwrap();
-
-        let expected_pre = vec![Identifier::Numeric(1),
-                                Identifier::AlphaNumeric(String::from("alpha1")),
-                                Identifier::Numeric(9)];
-        assert_eq!(expected_pre, parsed.pre);
-
-        let expected_build = vec![Identifier::AlphaNumeric(String::from("build5")),
-                                  Identifier::Numeric(7),
-                                  Identifier::AlphaNumeric(String::from("3aedf"))];
-        assert_eq!(expected_build, parsed.build);
-    }
-
-    #[test]
-    fn parse_complex_metadata_02() {
-        let version = "0.4.0-beta.1+0851523";
-
-        let parsed = version::parse(version).unwrap();
-
-        let expected_pre = vec![Identifier::AlphaNumeric(String::from("beta")),
-                                Identifier::Numeric(1)];
-        assert_eq!(expected_pre, parsed.pre);
-
-        let expected_build = vec![Identifier::AlphaNumeric(String::from("0851523"))];
-        assert_eq!(expected_build, parsed.build);
-    }
-
-    #[test]
-    fn parse_metadata_overflow() {
-        let version = "0.4.0-beta.1+98765432109876543210";
-
-        let parsed = version::parse(version).unwrap();
-
-        let expected_pre = vec![Identifier::AlphaNumeric(String::from("beta")),
-                                Identifier::Numeric(1)];
-        assert_eq!(expected_pre, parsed.pre);
-
-        let expected_build = vec![Identifier::AlphaNumeric(String::from("98765432109876543210"))];
-        assert_eq!(expected_build, parsed.build);
-    }
-
-    #[test]
-    fn parse_regression_01() {
-        let version = "0.0.0-WIP";
-
-        let parsed = version::parse(version).unwrap();
-
-        assert_eq!(0, parsed.major);
-        assert_eq!(0, parsed.minor);
-        assert_eq!(0, parsed.patch);
-
-        let expected_pre = vec![Identifier::AlphaNumeric(String::from("WIP"))];
-        assert_eq!(expected_pre, parsed.pre);
-    }
-}