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-rw-r--r--src/ci/docker/arm-android/Dockerfile4
-rw-r--r--src/ci/docker/armhf-gnu/Dockerfile4
-rw-r--r--src/ci/docker/asmjs/Dockerfile2
-rw-r--r--src/ci/docker/disabled/aarch64-gnu/Dockerfile1
-rw-r--r--src/ci/docker/disabled/dist-aarch64-android/Dockerfile2
-rw-r--r--src/ci/docker/disabled/dist-armv7-android/Dockerfile2
-rw-r--r--src/ci/docker/disabled/dist-i686-android/Dockerfile2
-rw-r--r--src/ci/docker/disabled/dist-x86_64-android/Dockerfile2
-rw-r--r--src/ci/docker/disabled/dist-x86_64-dragonfly/Dockerfile2
-rw-r--r--src/ci/docker/disabled/dist-x86_64-haiku/Dockerfile4
-rw-r--r--src/ci/docker/disabled/dist-x86_64-redox/Dockerfile2
-rw-r--r--src/ci/docker/disabled/wasm32-exp/Dockerfile2
-rw-r--r--src/ci/docker/disabled/wasm32/Dockerfile3
-rw-r--r--src/ci/docker/dist-aarch64-linux/Dockerfile2
-rw-r--r--src/ci/docker/dist-android/Dockerfile1
-rw-r--r--src/ci/docker/dist-arm-linux/Dockerfile2
-rw-r--r--src/ci/docker/dist-armhf-linux/Dockerfile2
-rw-r--r--src/ci/docker/dist-armv7-linux/Dockerfile2
-rw-r--r--src/ci/docker/dist-i586-gnu-i586-i686-musl/Dockerfile4
-rw-r--r--src/ci/docker/dist-i686-freebsd/Dockerfile2
-rw-r--r--src/ci/docker/dist-i686-linux/Dockerfile6
-rw-r--r--src/ci/docker/dist-mips-linux/Dockerfile2
-rw-r--r--src/ci/docker/dist-mips64-linux/Dockerfile2
-rw-r--r--src/ci/docker/dist-mips64el-linux/Dockerfile2
-rw-r--r--src/ci/docker/dist-mipsel-linux/Dockerfile2
-rw-r--r--src/ci/docker/dist-powerpc-linux/Dockerfile2
-rw-r--r--src/ci/docker/dist-powerpc64-linux/Dockerfile2
-rw-r--r--src/ci/docker/dist-powerpc64le-linux/Dockerfile2
-rw-r--r--src/ci/docker/dist-s390x-linux/Dockerfile2
-rw-r--r--src/ci/docker/dist-various-1/Dockerfile1
-rw-r--r--src/ci/docker/dist-various-2/Dockerfile2
-rw-r--r--src/ci/docker/dist-x86_64-freebsd/Dockerfile2
-rw-r--r--src/ci/docker/dist-x86_64-linux/Dockerfile1
-rw-r--r--src/ci/docker/dist-x86_64-musl/Dockerfile1
-rw-r--r--src/ci/docker/dist-x86_64-netbsd/Dockerfile2
-rw-r--r--src/ci/docker/wasm32-unknown/Dockerfile1
36 files changed, 27 insertions, 52 deletions
diff --git a/src/ci/docker/arm-android/Dockerfile b/src/ci/docker/arm-android/Dockerfile
index f2773a720cf..e10ccd56a4a 100644
--- a/src/ci/docker/arm-android/Dockerfile
+++ b/src/ci/docker/arm-android/Dockerfile
@@ -31,9 +31,7 @@ ENV PATH=$PATH:/android/sdk/platform-tools
 
 ENV TARGETS=arm-linux-androideabi
 
-ENV RUST_CONFIGURE_ARGS \
-      --target=$TARGETS \
-      --arm-linux-androideabi-ndk=/android/ndk/arm-14
+ENV RUST_CONFIGURE_ARGS --arm-linux-androideabi-ndk=/android/ndk/arm-14
 
 ENV SCRIPT python2.7 ../x.py test --target $TARGETS
 
diff --git a/src/ci/docker/armhf-gnu/Dockerfile b/src/ci/docker/armhf-gnu/Dockerfile
index 191f8e3a289..2b7624d53ee 100644
--- a/src/ci/docker/armhf-gnu/Dockerfile
+++ b/src/ci/docker/armhf-gnu/Dockerfile
@@ -76,9 +76,7 @@ RUN curl -O http://ftp.nl.debian.org/debian/dists/jessie/main/installer-armhf/cu
 COPY scripts/sccache.sh /scripts/
 RUN sh /scripts/sccache.sh
 
-ENV RUST_CONFIGURE_ARGS \
-      --target=arm-unknown-linux-gnueabihf \
-      --qemu-armhf-rootfs=/tmp/rootfs
+ENV RUST_CONFIGURE_ARGS --qemu-armhf-rootfs=/tmp/rootfs
 ENV SCRIPT python2.7 ../x.py test --target arm-unknown-linux-gnueabihf
 
 ENV NO_CHANGE_USER=1
diff --git a/src/ci/docker/asmjs/Dockerfile b/src/ci/docker/asmjs/Dockerfile
index ff0708459bc..2a0901691a5 100644
--- a/src/ci/docker/asmjs/Dockerfile
+++ b/src/ci/docker/asmjs/Dockerfile
@@ -29,6 +29,6 @@ ENV EM_CONFIG=/emsdk-portable/.emscripten
 
 ENV TARGETS=asmjs-unknown-emscripten
 
-ENV RUST_CONFIGURE_ARGS --target=$TARGETS --enable-emscripten
+ENV RUST_CONFIGURE_ARGS --enable-emscripten
 
 ENV SCRIPT python2.7 ../x.py test --target $TARGETS
diff --git a/src/ci/docker/disabled/aarch64-gnu/Dockerfile b/src/ci/docker/disabled/aarch64-gnu/Dockerfile
index fedb4094c8a..b2a3ba3ec26 100644
--- a/src/ci/docker/disabled/aarch64-gnu/Dockerfile
+++ b/src/ci/docker/disabled/aarch64-gnu/Dockerfile
@@ -74,7 +74,6 @@ COPY scripts/sccache.sh /scripts/
 RUN sh /scripts/sccache.sh
 
 ENV RUST_CONFIGURE_ARGS \
-      --target=aarch64-unknown-linux-gnu \
       --qemu-aarch64-rootfs=/tmp/rootfs
 ENV SCRIPT python2.7 ../x.py test --target aarch64-unknown-linux-gnu
 ENV NO_CHANGE_USER=1
diff --git a/src/ci/docker/disabled/dist-aarch64-android/Dockerfile b/src/ci/docker/disabled/dist-aarch64-android/Dockerfile
index ce5e8cfaf09..a7903b6f425 100644
--- a/src/ci/docker/disabled/dist-aarch64-android/Dockerfile
+++ b/src/ci/docker/disabled/dist-aarch64-android/Dockerfile
@@ -14,8 +14,6 @@ ENV DEP_Z_ROOT=/android/ndk/arm64-21/sysroot/usr/
 ENV HOSTS=aarch64-linux-android
 
 ENV RUST_CONFIGURE_ARGS \
-      --host=$HOSTS \
-      --target=$HOSTS \
       --aarch64-linux-android-ndk=/android/ndk/arm64-21 \
       --disable-rpath \
       --enable-extended \
diff --git a/src/ci/docker/disabled/dist-armv7-android/Dockerfile b/src/ci/docker/disabled/dist-armv7-android/Dockerfile
index 3177fa2147f..c02a5e5a095 100644
--- a/src/ci/docker/disabled/dist-armv7-android/Dockerfile
+++ b/src/ci/docker/disabled/dist-armv7-android/Dockerfile
@@ -20,8 +20,6 @@ ENV DEP_Z_ROOT=/android/ndk/arm-14/sysroot/usr/
 ENV HOSTS=armv7-linux-androideabi
 
 ENV RUST_CONFIGURE_ARGS \
-      --host=$HOSTS \
-      --target=$HOSTS \
       --armv7-linux-androideabi-ndk=/android/ndk/arm \
       --disable-rpath \
       --enable-extended \
diff --git a/src/ci/docker/disabled/dist-i686-android/Dockerfile b/src/ci/docker/disabled/dist-i686-android/Dockerfile
index ace9c4feb4f..04e83a431c4 100644
--- a/src/ci/docker/disabled/dist-i686-android/Dockerfile
+++ b/src/ci/docker/disabled/dist-i686-android/Dockerfile
@@ -20,8 +20,6 @@ ENV DEP_Z_ROOT=/android/ndk/x86-14/sysroot/usr/
 ENV HOSTS=i686-linux-android
 
 ENV RUST_CONFIGURE_ARGS \
-      --host=$HOSTS \
-      --target=$HOSTS \
       --i686-linux-android-ndk=/android/ndk/x86 \
       --disable-rpath \
       --enable-extended \
diff --git a/src/ci/docker/disabled/dist-x86_64-android/Dockerfile b/src/ci/docker/disabled/dist-x86_64-android/Dockerfile
index 322d26f0adc..937301864cd 100644
--- a/src/ci/docker/disabled/dist-x86_64-android/Dockerfile
+++ b/src/ci/docker/disabled/dist-x86_64-android/Dockerfile
@@ -14,8 +14,6 @@ ENV DEP_Z_ROOT=/android/ndk/x86_64-21/sysroot/usr/
 ENV HOSTS=x86_64-linux-android
 
 ENV RUST_CONFIGURE_ARGS \
-      --host=$HOSTS \
-      --target=$HOSTS \
       --x86_64-linux-android-ndk=/android/ndk/x86_64-21 \
       --disable-rpath \
       --enable-extended \
diff --git a/src/ci/docker/disabled/dist-x86_64-dragonfly/Dockerfile b/src/ci/docker/disabled/dist-x86_64-dragonfly/Dockerfile
index f3509efdb98..dbff9e32e13 100644
--- a/src/ci/docker/disabled/dist-x86_64-dragonfly/Dockerfile
+++ b/src/ci/docker/disabled/dist-x86_64-dragonfly/Dockerfile
@@ -32,5 +32,5 @@ ENV \
 
 ENV HOSTS=x86_64-unknown-dragonfly
 
-ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
diff --git a/src/ci/docker/disabled/dist-x86_64-haiku/Dockerfile b/src/ci/docker/disabled/dist-x86_64-haiku/Dockerfile
index 621976b5cbe..440afd7c97f 100644
--- a/src/ci/docker/disabled/dist-x86_64-haiku/Dockerfile
+++ b/src/ci/docker/disabled/dist-x86_64-haiku/Dockerfile
@@ -42,8 +42,8 @@ RUN sh /scripts/sccache.sh
 ENV HOST=x86_64-unknown-haiku
 ENV TARGET=target.$HOST
 
-ENV RUST_CONFIGURE_ARGS --host=$HOST --target=$HOST --disable-jemalloc \
+ENV RUST_CONFIGURE_ARGS --disable-jemalloc \
   --set=$TARGET.cc=x86_64-unknown-haiku-gcc \
   --set=$TARGET.cxx=x86_64-unknown-haiku-g++ \
   --set=$TARGET.llvm-config=/bin/llvm-config-haiku
-ENV SCRIPT python2.7 ../x.py dist
+ENV SCRIPT python2.7 ../x.py dist --host=$HOST --target=$HOST
diff --git a/src/ci/docker/disabled/dist-x86_64-redox/Dockerfile b/src/ci/docker/disabled/dist-x86_64-redox/Dockerfile
index ed19939545f..f4c25f791bc 100644
--- a/src/ci/docker/disabled/dist-x86_64-redox/Dockerfile
+++ b/src/ci/docker/disabled/dist-x86_64-redox/Dockerfile
@@ -18,5 +18,5 @@ ENV \
     CC_x86_64_unknown_redox=x86_64-unknown-redox-gcc \
     CXX_x86_64_unknown_redox=x86_64-unknown-redox-g++
 
-ENV RUST_CONFIGURE_ARGS --target=x86_64-unknown-redox --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --target x86_64-unknown-redox
diff --git a/src/ci/docker/disabled/wasm32-exp/Dockerfile b/src/ci/docker/disabled/wasm32-exp/Dockerfile
index 8653b0e8b46..420d47b314c 100644
--- a/src/ci/docker/disabled/wasm32-exp/Dockerfile
+++ b/src/ci/docker/disabled/wasm32-exp/Dockerfile
@@ -30,6 +30,6 @@ ENV EM_CONFIG=/root/.emscripten
 
 ENV TARGETS=wasm32-experimental-emscripten
 
-ENV RUST_CONFIGURE_ARGS --target=$TARGETS --experimental-targets=WebAssembly
+ENV RUST_CONFIGURE_ARGS --experimental-targets=WebAssembly
 
 ENV SCRIPT python2.7 ../x.py test --target $TARGETS
diff --git a/src/ci/docker/disabled/wasm32/Dockerfile b/src/ci/docker/disabled/wasm32/Dockerfile
index 7f6f8ae0882..6ac90d17450 100644
--- a/src/ci/docker/disabled/wasm32/Dockerfile
+++ b/src/ci/docker/disabled/wasm32/Dockerfile
@@ -29,7 +29,4 @@ ENV BINARYEN_ROOT=/emsdk-portable/clang/e1.37.13_64bit/binaryen/
 ENV EM_CONFIG=/emsdk-portable/.emscripten
 
 ENV TARGETS=wasm32-unknown-emscripten
-
-ENV RUST_CONFIGURE_ARGS --target=$TARGETS
-
 ENV SCRIPT python2.7 ../x.py test --target $TARGETS
diff --git a/src/ci/docker/dist-aarch64-linux/Dockerfile b/src/ci/docker/dist-aarch64-linux/Dockerfile
index 841d3012125..dbc319312aa 100644
--- a/src/ci/docker/dist-aarch64-linux/Dockerfile
+++ b/src/ci/docker/dist-aarch64-linux/Dockerfile
@@ -32,5 +32,5 @@ ENV CC_aarch64_unknown_linux_gnu=aarch64-unknown-linux-gnueabi-gcc \
 
 ENV HOSTS=aarch64-unknown-linux-gnu
 
-ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
diff --git a/src/ci/docker/dist-android/Dockerfile b/src/ci/docker/dist-android/Dockerfile
index 5d7545a3c2a..aa5da136758 100644
--- a/src/ci/docker/dist-android/Dockerfile
+++ b/src/ci/docker/dist-android/Dockerfile
@@ -21,7 +21,6 @@ ENV TARGETS=$TARGETS,aarch64-linux-android
 ENV TARGETS=$TARGETS,x86_64-linux-android
 
 ENV RUST_CONFIGURE_ARGS \
-      --target=$TARGETS \
       --enable-extended \
       --arm-linux-androideabi-ndk=/android/ndk/arm-14 \
       --armv7-linux-androideabi-ndk=/android/ndk/arm-14 \
diff --git a/src/ci/docker/dist-arm-linux/Dockerfile b/src/ci/docker/dist-arm-linux/Dockerfile
index ecd5090ea05..89f7f85cb3b 100644
--- a/src/ci/docker/dist-arm-linux/Dockerfile
+++ b/src/ci/docker/dist-arm-linux/Dockerfile
@@ -32,5 +32,5 @@ ENV CC_arm_unknown_linux_gnueabi=arm-unknown-linux-gnueabi-gcc \
 
 ENV HOSTS=arm-unknown-linux-gnueabi
 
-ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
diff --git a/src/ci/docker/dist-armhf-linux/Dockerfile b/src/ci/docker/dist-armhf-linux/Dockerfile
index 5bbd17bd414..e0c1b9a9e85 100644
--- a/src/ci/docker/dist-armhf-linux/Dockerfile
+++ b/src/ci/docker/dist-armhf-linux/Dockerfile
@@ -32,5 +32,5 @@ ENV CC_arm_unknown_linux_gnueabihf=arm-unknown-linux-gnueabihf-gcc \
 
 ENV HOSTS=arm-unknown-linux-gnueabihf
 
-ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
diff --git a/src/ci/docker/dist-armv7-linux/Dockerfile b/src/ci/docker/dist-armv7-linux/Dockerfile
index ea9034d7178..e7d4f464ffc 100644
--- a/src/ci/docker/dist-armv7-linux/Dockerfile
+++ b/src/ci/docker/dist-armv7-linux/Dockerfile
@@ -32,5 +32,5 @@ ENV CC_armv7_unknown_linux_gnueabihf=armv7-unknown-linux-gnueabihf-gcc \
 
 ENV HOSTS=armv7-unknown-linux-gnueabihf
 
-ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
diff --git a/src/ci/docker/dist-i586-gnu-i586-i686-musl/Dockerfile b/src/ci/docker/dist-i586-gnu-i586-i686-musl/Dockerfile
index 035846b4f64..7bcc649f4aa 100644
--- a/src/ci/docker/dist-i586-gnu-i586-i686-musl/Dockerfile
+++ b/src/ci/docker/dist-i586-gnu-i586-i686-musl/Dockerfile
@@ -30,7 +30,6 @@ COPY scripts/sccache.sh /scripts/
 RUN sh /scripts/sccache.sh
 
 ENV RUST_CONFIGURE_ARGS \
-      --target=i686-unknown-linux-musl,i586-unknown-linux-gnu \
       --musl-root-i586=/musl-i586 \
       --musl-root-i686=/musl-i686 \
       --enable-extended
@@ -46,8 +45,7 @@ ENV CFLAGS_i586_unknown_linux_gnu=-Wa,-mrelax-relocations=no
 #       https://github.com/alexcrichton/cc-rs/pull/281
 ENV CFLAGS_i586_unknown_linux_musl="-Wa,-mrelax-relocations=no -Wl,-melf_i386"
 
-ENV TARGETS=i586-unknown-linux-gnu
-ENV TARGETS=$TARGETS,i686-unknown-linux-musl
+ENV TARGETS=i586-unknown-linux-gnu,i686-unknown-linux-musl
 
 ENV SCRIPT \
       python2.7 ../x.py test --target $TARGETS && \
diff --git a/src/ci/docker/dist-i686-freebsd/Dockerfile b/src/ci/docker/dist-i686-freebsd/Dockerfile
index 673fa4c0c4b..1f595ba7a29 100644
--- a/src/ci/docker/dist-i686-freebsd/Dockerfile
+++ b/src/ci/docker/dist-i686-freebsd/Dockerfile
@@ -29,5 +29,5 @@ ENV \
 
 ENV HOSTS=i686-unknown-freebsd
 
-ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
diff --git a/src/ci/docker/dist-i686-linux/Dockerfile b/src/ci/docker/dist-i686-linux/Dockerfile
index 5e405aa72e8..da7c6233fc8 100644
--- a/src/ci/docker/dist-i686-linux/Dockerfile
+++ b/src/ci/docker/dist-i686-linux/Dockerfile
@@ -82,13 +82,11 @@ RUN sh /scripts/sccache.sh
 ENV HOSTS=i686-unknown-linux-gnu
 
 ENV RUST_CONFIGURE_ARGS \
-      --host=$HOSTS \
       --enable-extended \
       --enable-sanitizers \
       --enable-profiler \
-      --enable-emscripten \
-      --build=i686-unknown-linux-gnu
-ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
+      --enable-emscripten
+ENV SCRIPT python2.7 ../x.py dist --build $HOSTS --host $HOSTS --target $HOSTS
 
 # This is the only builder which will create source tarballs
 ENV DIST_SRC 1
diff --git a/src/ci/docker/dist-mips-linux/Dockerfile b/src/ci/docker/dist-mips-linux/Dockerfile
index 94a3cf8a382..37ab5bdcce5 100644
--- a/src/ci/docker/dist-mips-linux/Dockerfile
+++ b/src/ci/docker/dist-mips-linux/Dockerfile
@@ -22,5 +22,5 @@ RUN sh /scripts/sccache.sh
 
 ENV HOSTS=mips-unknown-linux-gnu
 
-ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
diff --git a/src/ci/docker/dist-mips64-linux/Dockerfile b/src/ci/docker/dist-mips64-linux/Dockerfile
index 0b0dfff1fe3..a5180780b22 100644
--- a/src/ci/docker/dist-mips64-linux/Dockerfile
+++ b/src/ci/docker/dist-mips64-linux/Dockerfile
@@ -21,5 +21,5 @@ RUN sh /scripts/sccache.sh
 
 ENV HOSTS=mips64-unknown-linux-gnuabi64
 
-ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
diff --git a/src/ci/docker/dist-mips64el-linux/Dockerfile b/src/ci/docker/dist-mips64el-linux/Dockerfile
index 1810b1cdc5a..d38ed24f625 100644
--- a/src/ci/docker/dist-mips64el-linux/Dockerfile
+++ b/src/ci/docker/dist-mips64el-linux/Dockerfile
@@ -22,5 +22,5 @@ RUN sh /scripts/sccache.sh
 
 ENV HOSTS=mips64el-unknown-linux-gnuabi64
 
-ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
diff --git a/src/ci/docker/dist-mipsel-linux/Dockerfile b/src/ci/docker/dist-mipsel-linux/Dockerfile
index f5be0748475..491c57ba677 100644
--- a/src/ci/docker/dist-mipsel-linux/Dockerfile
+++ b/src/ci/docker/dist-mipsel-linux/Dockerfile
@@ -21,5 +21,5 @@ RUN sh /scripts/sccache.sh
 
 ENV HOSTS=mipsel-unknown-linux-gnu
 
-ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
diff --git a/src/ci/docker/dist-powerpc-linux/Dockerfile b/src/ci/docker/dist-powerpc-linux/Dockerfile
index 14ce3654fce..c503f2af9cd 100644
--- a/src/ci/docker/dist-powerpc-linux/Dockerfile
+++ b/src/ci/docker/dist-powerpc-linux/Dockerfile
@@ -34,7 +34,7 @@ ENV \
 
 ENV HOSTS=powerpc-unknown-linux-gnu
 
-ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
 
 # FIXME(#36150) this will fail the bootstrap. Probably means something bad is
diff --git a/src/ci/docker/dist-powerpc64-linux/Dockerfile b/src/ci/docker/dist-powerpc64-linux/Dockerfile
index 1f6e83e2f49..4a369177736 100644
--- a/src/ci/docker/dist-powerpc64-linux/Dockerfile
+++ b/src/ci/docker/dist-powerpc64-linux/Dockerfile
@@ -35,5 +35,5 @@ ENV \
 
 ENV HOSTS=powerpc64-unknown-linux-gnu
 
-ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
diff --git a/src/ci/docker/dist-powerpc64le-linux/Dockerfile b/src/ci/docker/dist-powerpc64le-linux/Dockerfile
index d4677e18060..bf6c8b4b712 100644
--- a/src/ci/docker/dist-powerpc64le-linux/Dockerfile
+++ b/src/ci/docker/dist-powerpc64le-linux/Dockerfile
@@ -32,5 +32,5 @@ ENV \
 
 ENV HOSTS=powerpc64le-unknown-linux-gnu
 
-ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
diff --git a/src/ci/docker/dist-s390x-linux/Dockerfile b/src/ci/docker/dist-s390x-linux/Dockerfile
index 39478e92f7c..a2ebf590bab 100644
--- a/src/ci/docker/dist-s390x-linux/Dockerfile
+++ b/src/ci/docker/dist-s390x-linux/Dockerfile
@@ -34,5 +34,5 @@ ENV \
 
 ENV HOSTS=s390x-unknown-linux-gnu
 
-ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
diff --git a/src/ci/docker/dist-various-1/Dockerfile b/src/ci/docker/dist-various-1/Dockerfile
index c83f101d0ac..a23153645cd 100644
--- a/src/ci/docker/dist-various-1/Dockerfile
+++ b/src/ci/docker/dist-various-1/Dockerfile
@@ -89,7 +89,6 @@ ENV CC_mipsel_unknown_linux_musl=mipsel-openwrt-linux-gcc \
     CFLAGS_armv5te_unknown_linux_gnueabi="-march=armv5te -marm -mfloat-abi=soft"
 
 ENV RUST_CONFIGURE_ARGS \
-      --target=$TARGETS \
       --musl-root-arm=/musl-arm \
       --musl-root-armhf=/musl-armhf \
       --musl-root-armv7=/musl-armv7 \
diff --git a/src/ci/docker/dist-various-2/Dockerfile b/src/ci/docker/dist-various-2/Dockerfile
index 5f342eb5705..4505a60e463 100644
--- a/src/ci/docker/dist-various-2/Dockerfile
+++ b/src/ci/docker/dist-various-2/Dockerfile
@@ -55,5 +55,5 @@ ENV TARGETS=$TARGETS,x86_64-sun-solaris
 ENV TARGETS=$TARGETS,x86_64-unknown-linux-gnux32
 ENV TARGETS=$TARGETS,x86_64-unknown-cloudabi
 
-ENV RUST_CONFIGURE_ARGS --target=$TARGETS --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --target $TARGETS
diff --git a/src/ci/docker/dist-x86_64-freebsd/Dockerfile b/src/ci/docker/dist-x86_64-freebsd/Dockerfile
index f9f5b7062f8..dd595a19205 100644
--- a/src/ci/docker/dist-x86_64-freebsd/Dockerfile
+++ b/src/ci/docker/dist-x86_64-freebsd/Dockerfile
@@ -29,5 +29,5 @@ ENV \
 
 ENV HOSTS=x86_64-unknown-freebsd
 
-ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
diff --git a/src/ci/docker/dist-x86_64-linux/Dockerfile b/src/ci/docker/dist-x86_64-linux/Dockerfile
index d368a00b55b..86b3beeb4e5 100644
--- a/src/ci/docker/dist-x86_64-linux/Dockerfile
+++ b/src/ci/docker/dist-x86_64-linux/Dockerfile
@@ -82,7 +82,6 @@ RUN sh /scripts/sccache.sh
 ENV HOSTS=x86_64-unknown-linux-gnu
 
 ENV RUST_CONFIGURE_ARGS \
-      --host=$HOSTS \
       --enable-extended \
       --enable-sanitizers \
       --enable-profiler \
diff --git a/src/ci/docker/dist-x86_64-musl/Dockerfile b/src/ci/docker/dist-x86_64-musl/Dockerfile
index c1061309c30..3a9ad178c63 100644
--- a/src/ci/docker/dist-x86_64-musl/Dockerfile
+++ b/src/ci/docker/dist-x86_64-musl/Dockerfile
@@ -30,7 +30,6 @@ COPY scripts/sccache.sh /scripts/
 RUN sh /scripts/sccache.sh
 
 ENV RUST_CONFIGURE_ARGS \
-      --target=x86_64-unknown-linux-musl \
       --musl-root-x86_64=/musl-x86_64 \
       --enable-extended
 
diff --git a/src/ci/docker/dist-x86_64-netbsd/Dockerfile b/src/ci/docker/dist-x86_64-netbsd/Dockerfile
index 4fd2503c31b..06298a12fc7 100644
--- a/src/ci/docker/dist-x86_64-netbsd/Dockerfile
+++ b/src/ci/docker/dist-x86_64-netbsd/Dockerfile
@@ -33,5 +33,5 @@ ENV \
 
 ENV HOSTS=x86_64-unknown-netbsd
 
-ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV RUST_CONFIGURE_ARGS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
diff --git a/src/ci/docker/wasm32-unknown/Dockerfile b/src/ci/docker/wasm32-unknown/Dockerfile
index dc1727b7014..106f907bab9 100644
--- a/src/ci/docker/wasm32-unknown/Dockerfile
+++ b/src/ci/docker/wasm32-unknown/Dockerfile
@@ -22,7 +22,6 @@ RUN sh /scripts/sccache.sh
 ENV TARGETS=wasm32-unknown-unknown
 
 ENV RUST_CONFIGURE_ARGS \
-  --target=$TARGETS \
   --set build.nodejs=/node-v9.2.0-linux-x64/bin/node
 
 ENV SCRIPT python2.7 /checkout/x.py test --target $TARGETS \