diff --git a/src/ci/docker/arm-android/Dockerfile b/src/ci/docker/arm-android/Dockerfile
index 8911b4ff0cb87..a40e76839eccd 100644
--- a/src/ci/docker/arm-android/Dockerfile
+++ b/src/ci/docker/arm-android/Dockerfile
@@ -11,7 +11,6 @@ RUN dpkg --add-architecture i386 && \
   python2.7 \
   git \
   cmake \
-  ccache \
   unzip \
   expect \
   openjdk-9-jre \
@@ -50,5 +49,3 @@ ENV RUST_CONFIGURE_ARGS \
       --i686-linux-android-ndk=/android/ndk-x86-9 \
       --aarch64-linux-android-ndk=/android/ndk-aarch64
 ENV XPY_CHECK test --target arm-linux-androideabi
-RUN mkdir /tmp/obj
-RUN chmod 777 /tmp/obj
diff --git a/src/ci/docker/cross/Dockerfile b/src/ci/docker/cross/Dockerfile
index 08b436313f637..c5aa323f50cd2 100644
--- a/src/ci/docker/cross/Dockerfile
+++ b/src/ci/docker/cross/Dockerfile
@@ -9,7 +9,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   python2.7 \
   git \
   cmake \
-  ccache \
   sudo \
   gcc-aarch64-linux-gnu libc6-dev-arm64-cross \
   gcc-arm-linux-gnueabi libc6-dev-armel-cross \
@@ -70,6 +69,3 @@ ENV AR_s390x_unknown_linux_gnu=s390x-linux-gnu-ar \
 
 # FIXME(rust-lang/rust#36150): powerpc unfortunately aborts right now
 ENV NO_LLVM_ASSERTIONS=1
-
-RUN mkdir /tmp/obj
-RUN chmod 777 /tmp/obj
diff --git a/src/ci/docker/i686-gnu-nopt/Dockerfile b/src/ci/docker/i686-gnu-nopt/Dockerfile
index 1da33c94c7b18..1ffb24981c59a 100644
--- a/src/ci/docker/i686-gnu-nopt/Dockerfile
+++ b/src/ci/docker/i686-gnu-nopt/Dockerfile
@@ -9,7 +9,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   python2.7 \
   git \
   cmake \
-  ccache \
   sudo \
   gdb \
   xz-utils
@@ -25,5 +24,3 @@ ENTRYPOINT ["/usr/bin/dumb-init", "--"]
 
 ENV RUST_CONFIGURE_ARGS --build=i686-unknown-linux-gnu --disable-optimize-tests
 ENV RUST_CHECK_TARGET check
-RUN mkdir /tmp/obj
-RUN chmod 777 /tmp/obj
diff --git a/src/ci/docker/i686-gnu/Dockerfile b/src/ci/docker/i686-gnu/Dockerfile
index 9e5b0e0435e8b..e4310232d78cf 100644
--- a/src/ci/docker/i686-gnu/Dockerfile
+++ b/src/ci/docker/i686-gnu/Dockerfile
@@ -9,7 +9,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   python2.7 \
   git \
   cmake \
-  ccache \
   sudo \
   gdb \
   xz-utils
@@ -25,5 +24,3 @@ ENTRYPOINT ["/usr/bin/dumb-init", "--"]
 
 ENV RUST_CONFIGURE_ARGS --build=i686-unknown-linux-gnu
 ENV RUST_CHECK_TARGET check
-RUN mkdir /tmp/obj
-RUN chmod 777 /tmp/obj
diff --git a/src/ci/docker/x86_64-freebsd/Dockerfile b/src/ci/docker/x86_64-freebsd/Dockerfile
index 75f3174e2c044..86efa74ba3b6f 100644
--- a/src/ci/docker/x86_64-freebsd/Dockerfile
+++ b/src/ci/docker/x86_64-freebsd/Dockerfile
@@ -9,7 +9,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   python2.7 \
   git \
   cmake \
-  ccache \
   sudo \
   bzip2 \
   xz-utils \
@@ -33,5 +32,3 @@ ENV \
 
 ENV RUST_CONFIGURE_ARGS --target=x86_64-unknown-freebsd
 ENV RUST_CHECK_TARGET ""
-RUN mkdir /tmp/obj
-RUN chmod 777 /tmp/obj
diff --git a/src/ci/docker/x86_64-gnu-cargotest/Dockerfile b/src/ci/docker/x86_64-gnu-cargotest/Dockerfile
index 2c3db87d9fb1f..1be11cb24f2fb 100644
--- a/src/ci/docker/x86_64-gnu-cargotest/Dockerfile
+++ b/src/ci/docker/x86_64-gnu-cargotest/Dockerfile
@@ -9,7 +9,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   python2.7 \
   git \
   cmake \
-  ccache \
   libssl-dev \
   sudo \
   xz-utils \
@@ -27,5 +26,3 @@ ENTRYPOINT ["/usr/bin/dumb-init", "--"]
 ENV RUST_CONFIGURE_ARGS --build=x86_64-unknown-linux-gnu
 ENV RUST_CHECK_TARGET check-cargotest
 ENV NO_VENDOR 1
-RUN mkdir /tmp/obj
-RUN chmod 777 /tmp/obj
diff --git a/src/ci/docker/x86_64-gnu-debug/Dockerfile b/src/ci/docker/x86_64-gnu-debug/Dockerfile
index eec88442293a4..9ec8c6059ec31 100644
--- a/src/ci/docker/x86_64-gnu-debug/Dockerfile
+++ b/src/ci/docker/x86_64-gnu-debug/Dockerfile
@@ -9,7 +9,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   python2.7 \
   git \
   cmake \
-  ccache \
   sudo \
   gdb \
   xz-utils
@@ -28,5 +27,3 @@ ENV RUST_CONFIGURE_ARGS \
       --enable-debug \
       --enable-optimize
 ENV RUST_CHECK_TARGET ""
-RUN mkdir /tmp/obj
-RUN chmod 777 /tmp/obj
diff --git a/src/ci/docker/x86_64-gnu-llvm-3.7/Dockerfile b/src/ci/docker/x86_64-gnu-llvm-3.7/Dockerfile
index 4c9198d88eb21..aabfc0cd1bd8f 100644
--- a/src/ci/docker/x86_64-gnu-llvm-3.7/Dockerfile
+++ b/src/ci/docker/x86_64-gnu-llvm-3.7/Dockerfile
@@ -9,7 +9,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   python2.7 \
   git \
   cmake \
-  ccache \
   sudo \
   gdb \
   llvm-3.7-tools \
@@ -30,5 +29,3 @@ ENV RUST_CONFIGURE_ARGS \
       --build=x86_64-unknown-linux-gnu \
       --llvm-root=/usr/lib/llvm-3.7
 ENV RUST_CHECK_TARGET check
-RUN mkdir /tmp/obj
-RUN chmod 777 /tmp/obj
diff --git a/src/ci/docker/x86_64-gnu-make/Dockerfile b/src/ci/docker/x86_64-gnu-make/Dockerfile
index 1c503aea13d50..c6071d704f5f6 100644
--- a/src/ci/docker/x86_64-gnu-make/Dockerfile
+++ b/src/ci/docker/x86_64-gnu-make/Dockerfile
@@ -9,7 +9,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   python2.7 \
   git \
   cmake \
-  ccache \
   sudo \
   gdb \
   xz-utils
@@ -25,5 +24,3 @@ ENTRYPOINT ["/usr/bin/dumb-init", "--"]
 
 ENV RUST_CONFIGURE_ARGS --build=x86_64-unknown-linux-gnu --disable-rustbuild
 ENV RUST_CHECK_TARGET check
-RUN mkdir /tmp/obj
-RUN chmod 777 /tmp/obj
diff --git a/src/ci/docker/x86_64-gnu-nopt/Dockerfile b/src/ci/docker/x86_64-gnu-nopt/Dockerfile
index 66de6ea13ac67..d28dc3de1b494 100644
--- a/src/ci/docker/x86_64-gnu-nopt/Dockerfile
+++ b/src/ci/docker/x86_64-gnu-nopt/Dockerfile
@@ -9,7 +9,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   python2.7 \
   git \
   cmake \
-  ccache \
   sudo \
   gdb \
   xz-utils
@@ -25,5 +24,3 @@ ENTRYPOINT ["/usr/bin/dumb-init", "--"]
 
 ENV RUST_CONFIGURE_ARGS --build=x86_64-unknown-linux-gnu --disable-optimize-tests
 ENV RUST_CHECK_TARGET check
-RUN mkdir /tmp/obj
-RUN chmod 777 /tmp/obj
diff --git a/src/ci/docker/x86_64-gnu/Dockerfile b/src/ci/docker/x86_64-gnu/Dockerfile
index 3d71b7ffb9a3a..9d8b75c80c7f2 100644
--- a/src/ci/docker/x86_64-gnu/Dockerfile
+++ b/src/ci/docker/x86_64-gnu/Dockerfile
@@ -9,7 +9,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   python2.7 \
   git \
   cmake \
-  ccache \
   sudo \
   gdb \
   xz-utils
@@ -25,5 +24,3 @@ ENTRYPOINT ["/usr/bin/dumb-init", "--"]
 
 ENV RUST_CONFIGURE_ARGS --build=x86_64-unknown-linux-gnu
 ENV RUST_CHECK_TARGET check
-RUN mkdir /tmp/obj
-RUN chmod 777 /tmp/obj
diff --git a/src/ci/docker/x86_64-musl/Dockerfile b/src/ci/docker/x86_64-musl/Dockerfile
index 96b38067cbb14..49954157ec023 100644
--- a/src/ci/docker/x86_64-musl/Dockerfile
+++ b/src/ci/docker/x86_64-musl/Dockerfile
@@ -9,7 +9,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   python2.7 \
   git \
   cmake \
-  ccache \
   xz-utils \
   sudo \
   gdb
@@ -33,6 +32,3 @@ ENV RUST_CONFIGURE_ARGS \
 ENV RUST_CHECK_TARGET check-stage2-T-x86_64-unknown-linux-musl-H-x86_64-unknown-linux-gnu
 ENV PATH=$PATH:/musl-x86_64/bin
 ENV XPY_CHECK test --target x86_64-unknown-linux-musl
-
-RUN mkdir /tmp/obj
-RUN chmod 777 /tmp/obj