appveyor: Use Ninja/sccache on MSVC

.travis.yml

@@ -63,7 +63,7 @@ matrix:
       os: osx
       osx_image: xcode8.2
       install: &osx_install_sccache >
-        travis_retry curl -o /usr/local/bin/sccache https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-apple-darwin &&
+        travis_retry curl -o /usr/local/bin/sccache https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-apple-darwin &&
           chmod +x /usr/local/bin/sccache &&
         travis_retry curl -o /usr/local/bin/stamp https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-03-17-stamp-x86_64-apple-darwin &&
           chmod +x /usr/local/bin/stamp

appveyor.yml

@@ -32,14 +32,14 @@ environment:
   # came from the mingw-w64 SourceForge download site. Unfortunately
   # SourceForge is notoriously flaky, so we mirror it on our own infrastructure.
   - MSYS_BITS: 32
-    RUST_CONFIGURE_ARGS: --build=i686-pc-windows-gnu --enable-ninja
+    RUST_CONFIGURE_ARGS: --build=i686-pc-windows-gnu
     SCRIPT: python x.py test
     MINGW_URL: https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror
     MINGW_ARCHIVE: i686-6.3.0-release-posix-dwarf-rt_v5-rev2.7z
     MINGW_DIR: mingw32
   - MSYS_BITS: 64
     SCRIPT: python x.py test
-    RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-gnu --enable-ninja
+    RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-gnu
     MINGW_URL: https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror
     MINGW_ARCHIVE: x86_64-6.3.0-release-posix-seh-rt_v5-rev2.7z
     MINGW_DIR: mingw64
@@ -57,15 +57,15 @@ environment:
     SCRIPT: python x.py dist
     DEPLOY: 1
   - MSYS_BITS: 32
-    RUST_CONFIGURE_ARGS: --build=i686-pc-windows-gnu --enable-extended --enable-ninja
+    RUST_CONFIGURE_ARGS: --build=i686-pc-windows-gnu --enable-extended
     SCRIPT: python x.py dist
     MINGW_URL: https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror
     MINGW_ARCHIVE: i686-6.3.0-release-posix-dwarf-rt_v5-rev2.7z
     MINGW_DIR: mingw32
     DEPLOY: 1
   - MSYS_BITS: 64
     SCRIPT: python x.py dist
-    RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-gnu --enable-extended --enable-ninja
+    RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-gnu --enable-extended
     MINGW_URL: https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror
     MINGW_ARCHIVE: x86_64-6.3.0-release-posix-seh-rt_v5-rev2.7z
     MINGW_DIR: mingw64
@@ -124,15 +124,16 @@ install:
   - set PATH=C:\Python27;%PATH%
 
   # Download and install sccache
-  - appveyor-retry appveyor DownloadFile https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-pc-windows-msvc
-  - mv 2017-04-04-sccache-x86_64-pc-windows-msvc sccache.exe
+  - appveyor-retry appveyor DownloadFile https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-pc-windows-msvc
+  - mv 2017-04-19-sccache-x86_64-pc-windows-msvc sccache.exe
   - set PATH=%PATH%;%CD%
 
   # Download and install ninja
   #
   # Note that this is originally from the github releases patch of Ninja
   - appveyor-retry appveyor DownloadFile https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-03-15-ninja-win.zip
   - 7z x 2017-03-15-ninja-win.zip
+  - set RUST_CONFIGURE_ARGS=%RUST_CONFIGURE_ARGS% --enable-ninja
   # - set PATH=%PATH%;%CD% -- this already happens above for sccache
 
   # Install InnoSetup to get `iscc` used to produce installers
@@ -159,12 +160,6 @@ test_script:
 on_failure:
   - cat %CD%\sccache.log || exit 0
 
-cache:
-  - "build/i686-pc-windows-msvc/llvm -> src/rustllvm/llvm-rebuild-trigger"
-  - "build/x86_64-pc-windows-msvc/llvm -> src/rustllvm/llvm-rebuild-trigger"
-  - "i686-pc-windows-msvc/llvm -> src/rustllvm/llvm-rebuild-trigger"
-  - "x86_64-pc-windows-msvc/llvm -> src/rustllvm/llvm-rebuild-trigger"
-
 branches:
   only:
     - auto

src/bootstrap/Cargo.toml

@@ -23,6 +23,11 @@ name = "rustdoc"
 path = "bin/rustdoc.rs"
 test = false
 
+[[bin]]
+name = "sccache-plus-cl"
+path = "bin/sccache-plus-cl.rs"
+test = false
+
 [dependencies]
 build_helper = { path = "../build_helper" }
 cmake = "0.1.17"

src/bootstrap/bin/sccache-plus-cl.rs

@@ -0,0 +1,43 @@
+// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+extern crate gcc;
+
+use std::env;
+use std::process::{self, Command};
+
+fn main() {
+    let target = env::var("SCCACHE_TARGET").unwrap();
+    // Locate the actual compiler that we're invoking
+    env::remove_var("CC");
+    env::remove_var("CXX");
+    let mut cfg = gcc::Config::new();
+    cfg.cargo_metadata(false)
+       .out_dir("/")
+       .target(&target)
+       .host(&target)
+       .opt_level(0)
+       .debug(false);
+    let compiler = cfg.get_compiler();
+
+    // Invoke sccache with said compiler
+    let sccache_path = env::var_os("SCCACHE_PATH").unwrap();
+    let mut cmd = Command::new(&sccache_path);
+    cmd.arg(compiler.path());
+    for &(ref k, ref v) in compiler.env() {
+        cmd.env(k, v);
+    }
+    for arg in env::args().skip(1) {
+        cmd.arg(arg);
+    }
+
+    let status = cmd.status().expect("failed to spawn");
+    process::exit(status.code().unwrap_or(2))
+}

src/bootstrap/native.rs

@@ -19,6 +19,7 @@
 //! ensure that they're always in place if needed.
 
 use std::env;
+use std::ffi::OsString;
 use std::fs::{self, File};
 use std::io::{Read, Write};
 use std::path::Path;
@@ -129,22 +130,56 @@ pub fn llvm(build: &Build, target: &str) {
            .define("LLVM_TABLEGEN", &host);
     }
 
-    // MSVC handles compiler business itself
-    if !target.contains("msvc") {
-        if let Some(ref ccache) = build.config.ccache {
+    let sanitize_cc = |cc: &Path| {
+        if target.contains("msvc") {
+            OsString::from(cc.to_str().unwrap().replace("\\", "/"))
+        } else {
+            cc.as_os_str().to_owned()
+        }
+    };
+
+    let configure_compilers = |cfg: &mut cmake::Config| {
+        // MSVC with CMake uses msbuild by default which doesn't respect these
+        // vars that we'd otherwise configure. In that case we just skip this
+        // entirely.
+        if target.contains("msvc") && !build.config.ninja {
+            return
+        }
+
+        let cc = build.cc(target);
+        let cxx = build.cxx(target);
+
+        // Handle msvc + ninja + ccache specially (this is what the bots use)
+        if target.contains("msvc") &&
+           build.config.ninja &&
+           build.config.ccache.is_some() {
+            let mut cc = env::current_exe().expect("failed to get cwd");
+            cc.set_file_name("sccache-plus-cl.exe");
+
+           cfg.define("CMAKE_C_COMPILER", sanitize_cc(&cc))
+              .define("CMAKE_CXX_COMPILER", sanitize_cc(&cc));
+           cfg.env("SCCACHE_PATH",
+                   build.config.ccache.as_ref().unwrap())
+              .env("SCCACHE_TARGET", target);
+
+        // If ccache is configured we inform the build a little differently hwo
+        // to invoke ccache while also invoking our compilers.
+        } else if let Some(ref ccache) = build.config.ccache {
            cfg.define("CMAKE_C_COMPILER", ccache)
-              .define("CMAKE_C_COMPILER_ARG1", build.cc(target))
+              .define("CMAKE_C_COMPILER_ARG1", sanitize_cc(cc))
               .define("CMAKE_CXX_COMPILER", ccache)
-              .define("CMAKE_CXX_COMPILER_ARG1", build.cxx(target));
+              .define("CMAKE_CXX_COMPILER_ARG1", sanitize_cc(cxx));
         } else {
-           cfg.define("CMAKE_C_COMPILER", build.cc(target))
-              .define("CMAKE_CXX_COMPILER", build.cxx(target));
+           cfg.define("CMAKE_C_COMPILER", sanitize_cc(cc))
+              .define("CMAKE_CXX_COMPILER", sanitize_cc(cxx));
         }
-        cfg.build_arg("-j").build_arg(build.jobs().to_string());
 
+        cfg.build_arg("-j").build_arg(build.jobs().to_string());
         cfg.define("CMAKE_C_FLAGS", build.cflags(target).join(" "));
         cfg.define("CMAKE_CXX_FLAGS", build.cflags(target).join(" "));
-    }
+    };
+
+    configure_compilers(&mut cfg);
 
     if env::var_os("SCCACHE_ERROR_LOG").is_some() {
         cfg.env("RUST_LOG", "sccache=info");

src/ci/docker/armhf-gnu/Dockerfile

@@ -74,7 +74,7 @@ RUN arm-linux-gnueabihf-gcc addentropy.c -o rootfs/addentropy -static
 RUN curl -O http://ftp.nl.debian.org/debian/dists/jessie/main/installer-armhf/current/images/device-tree/vexpress-v2p-ca15-tc1.dtb
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64.deb && \

src/ci/docker/cross/Dockerfile

@@ -22,7 +22,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   pkg-config
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64.deb && \

src/ci/docker/dist-aarch64-linux/Dockerfile

@@ -62,7 +62,7 @@ RUN ./build-toolchains.sh
 USER root
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 ENV PATH=$PATH:/x-tools/aarch64-unknown-linux-gnueabi/bin

src/ci/docker/dist-android/Dockerfile

@@ -32,7 +32,7 @@ RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-ini
 ENTRYPOINT ["/usr/bin/dumb-init", "--"]
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 ENV TARGETS=arm-linux-androideabi

src/ci/docker/dist-arm-linux/Dockerfile

@@ -62,7 +62,7 @@ RUN ./build-toolchains.sh
 USER root
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 ENV PATH=$PATH:/x-tools/arm-unknown-linux-gnueabi/bin

src/ci/docker/dist-armhf-linux/Dockerfile

@@ -62,7 +62,7 @@ RUN ./build-toolchains.sh
 USER root
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 ENV PATH=$PATH:/x-tools/arm-unknown-linux-gnueabihf/bin

src/ci/docker/dist-armv7-linux/Dockerfile

@@ -62,7 +62,7 @@ RUN ./build-toolchains.sh
 USER root
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 ENV PATH=$PATH:/x-tools/armv7-unknown-linux-gnueabihf/bin

src/ci/docker/dist-fuchsia/Dockerfile

@@ -30,7 +30,7 @@ RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-ini
 ENTRYPOINT ["/usr/bin/dumb-init", "--"]
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 ENV \

src/ci/docker/dist-i586-gnu-i686-musl/Dockerfile

@@ -26,7 +26,7 @@ RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-ini
 ENTRYPOINT ["/usr/bin/dumb-init", "--"]
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 ENV RUST_CONFIGURE_ARGS \

src/ci/docker/dist-i686-freebsd/Dockerfile

@@ -25,7 +25,7 @@ RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-ini
 ENTRYPOINT ["/usr/bin/dumb-init", "--"]
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 ENV \

src/ci/docker/dist-i686-linux/Dockerfile

@@ -82,7 +82,7 @@ RUN curl -Lo /rustroot/dumb-init \
 ENTRYPOINT ["/rustroot/dumb-init", "--"]
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 ENV HOSTS=i686-unknown-linux-gnu

src/ci/docker/dist-mips-linux/Dockerfile

@@ -17,7 +17,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   pkg-config
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64.deb && \

src/ci/docker/dist-mips64-linux/Dockerfile

@@ -17,7 +17,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   pkg-config
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64.deb && \

src/ci/docker/dist-mips64el-linux/Dockerfile

@@ -17,7 +17,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   pkg-config
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64.deb && \

src/ci/docker/dist-mipsel-linux/Dockerfile

@@ -17,7 +17,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   pkg-config
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64.deb && \

src/ci/docker/dist-powerpc-linux/Dockerfile

@@ -63,7 +63,7 @@ RUN ./build-powerpc-toolchain.sh
 USER root
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 ENV PATH=$PATH:/x-tools/powerpc-unknown-linux-gnu/bin

src/ci/docker/dist-powerpc64-linux/Dockerfile

@@ -63,7 +63,7 @@ RUN ./build-powerpc64-toolchain.sh
 USER root
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 ENV PATH=$PATH:/x-tools/powerpc64-unknown-linux-gnu/bin

src/ci/docker/dist-powerpc64le-linux/Dockerfile

@@ -63,7 +63,7 @@ COPY shared.sh build-powerpc64le-toolchain.sh /tmp/
 RUN ./build-powerpc64le-toolchain.sh
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 ENV \

src/ci/docker/dist-s390x-linux/Dockerfile

@@ -63,7 +63,7 @@ RUN ./build-s390x-toolchain.sh
 USER root
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 ENV PATH=$PATH:/x-tools/s390x-ibm-linux-gnu/bin

src/ci/docker/dist-x86_64-freebsd/Dockerfile

@@ -25,7 +25,7 @@ RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-ini
 ENTRYPOINT ["/usr/bin/dumb-init", "--"]
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 ENV \

src/ci/docker/dist-x86_64-linux/Dockerfile

@@ -82,7 +82,7 @@ RUN curl -Lo /rustroot/dumb-init \
 ENTRYPOINT ["/rustroot/dumb-init", "--"]
 
 RUN curl -o /usr/local/bin/sccache \
-      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-04-sccache-x86_64-unknown-linux-musl && \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-04-19-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
 ENV HOSTS=x86_64-unknown-linux-gnu