diff --git a/.travis.yml b/.travis.yml
index 0646f4d4687a6..ec8060b9f56aa 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -94,6 +94,7 @@ matrix:
         MACOSX_DEPLOYMENT_TARGET=10.7
         NO_LLVM_ASSERTIONS=1
         NO_DEBUG_ASSERTIONS=1
+        DIST_REQUIRE_ALL_TOOLS=1
         CI_JOB_NAME=dist-i686-apple
       os: osx
       osx_image: xcode9.3-moar
@@ -108,6 +109,7 @@ matrix:
         MACOSX_DEPLOYMENT_TARGET=10.7
         NO_LLVM_ASSERTIONS=1
         NO_DEBUG_ASSERTIONS=1
+        DIST_REQUIRE_ALL_TOOLS=1
         CI_JOB_NAME=dist-x86_64-apple
       os: osx
       osx_image: xcode9.3-moar
diff --git a/appveyor.yml b/appveyor.yml
index b1e2e1545cf85..04951454c29e1 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -85,6 +85,7 @@ environment:
       --enable-full-tools
       --enable-profiler
     SCRIPT: python x.py dist
+    DIST_REQUIRE_ALL_TOOLS: 1
     DEPLOY: 1
     CI_JOB_NAME: dist-x86_64-msvc
   - RUST_CONFIGURE_ARGS: >
@@ -93,6 +94,7 @@ environment:
       --enable-full-tools
       --enable-profiler
     SCRIPT: python x.py dist
+    DIST_REQUIRE_ALL_TOOLS: 1
     DEPLOY: 1
     CI_JOB_NAME: dist-i686-msvc
   - MSYS_BITS: 32
@@ -101,6 +103,7 @@ environment:
     MINGW_URL: https://s3-us-west-1.amazonaws.com/rust-lang-ci2/rust-ci-mirror
     MINGW_ARCHIVE: i686-6.3.0-release-posix-dwarf-rt_v5-rev2.7z
     MINGW_DIR: mingw32
+    DIST_REQUIRE_ALL_TOOLS: 1
     DEPLOY: 1
     CI_JOB_NAME: dist-i686-mingw
   - MSYS_BITS: 64
@@ -109,6 +112,7 @@ environment:
     MINGW_URL: https://s3-us-west-1.amazonaws.com/rust-lang-ci2/rust-ci-mirror
     MINGW_ARCHIVE: x86_64-6.3.0-release-posix-seh-rt_v5-rev2.7z
     MINGW_DIR: mingw64
+    DIST_REQUIRE_ALL_TOOLS: 1
     DEPLOY: 1
     CI_JOB_NAME: dist-x86_64-mingw
 
diff --git a/src/ci/docker/dist-i686-linux/Dockerfile b/src/ci/docker/dist-i686-linux/Dockerfile
index d591fb28f36ed..8a84e47468744 100644
--- a/src/ci/docker/dist-i686-linux/Dockerfile
+++ b/src/ci/docker/dist-i686-linux/Dockerfile
@@ -110,3 +110,5 @@ ENV CFLAGS -mstackrealign
 # When we build cargo in this container, we don't want it to use the system
 # libcurl, instead it should compile its own.
 ENV LIBCURL_NO_PKG_CONFIG 1
+
+ENV DIST_REQUIRE_ALL_TOOLS 1
diff --git a/src/ci/docker/dist-x86_64-linux/Dockerfile b/src/ci/docker/dist-x86_64-linux/Dockerfile
index 01f6db03e8ee0..7e3cc10b0c10c 100644
--- a/src/ci/docker/dist-x86_64-linux/Dockerfile
+++ b/src/ci/docker/dist-x86_64-linux/Dockerfile
@@ -106,3 +106,5 @@ ENV DIST_SRC 1
 # When we build cargo in this container, we don't want it to use the system
 # libcurl, instead it should compile its own.
 ENV LIBCURL_NO_PKG_CONFIG 1
+
+ENV DIST_REQUIRE_ALL_TOOLS 1