diff --git a/Dockerfile b/Dockerfile
index 45791ce6..4002b8e8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -31,12 +31,13 @@ RUN DEBIAN_FRONTEND=noninteractive apt-get update && \
         ca-certificates \
         git \
         wget \
+        pkg-config \
         crossbuild-essential-riscv64 \
         gcc-12-riscv64-linux-gnu \
         g++-12-riscv64-linux-gnu \
         && \
     wget -O ${LINUX_HEADERS_FILEPATH} ${LINUX_HEADERS_URLPATH} && \
-    echo "efdb2243d9b6828e90c826be0f178110f0cc590cb00e8fa588cb20723126c2a4  ${LINUX_HEADERS_FILEPATH}" | sha256sum --check && \
+    echo "4ef81562b1d85220bde9fd4ff01d149469a500f22cc319a02c32bfd1c0698ae1  ${LINUX_HEADERS_FILEPATH}" | sha256sum --check && \
     apt-get install -y --no-install-recommends ${LINUX_HEADERS_FILEPATH} && \
     adduser developer -u 499 --gecos ",,," --disabled-password && \
     mkdir -p ${BUILD_BASE}/tools && chown -R developer:developer ${BUILD_BASE}/tools && \
@@ -80,57 +81,57 @@ RUN make -C ${BUILD_BASE}/tools/sys-utils/libcmt/ -j$(nproc) ioctl.install mock.
 USER developer
 RUN make -C ${BUILD_BASE}/tools/sys-utils/ -j$(nproc) all
 
-# build rust tools
-# ------------------------------------------------------------------------------
-FROM tools-env as rust-env
-ENV PATH="/home/developer/.cargo/bin:${PATH}"
-
-USER developer
-
-RUN cd  && \
-    wget https://github.com/rust-lang/rustup/archive/refs/tags/1.26.0.tar.gz && \
-    echo "6f20ff98f2f1dbde6886f8d133fe0d7aed24bc76c670ea1fca18eb33baadd808  1.26.0.tar.gz" | sha256sum --check && \
-    tar -xzf 1.26.0.tar.gz && \
-    bash rustup-1.26.0/rustup-init.sh \
-        -y \
-        --default-toolchain 1.74.0 \
-        --profile minimal \
-        --target riscv64gc-unknown-linux-gnu && \
-    rm -rf rustup-1.26.0 1.26.0.tar.gz
-
-FROM rust-env as rust-builder
-COPY --chown=developer:developer rollup-http/rollup-init ${BUILD_BASE}/tools/rollup-http/rollup-init
-COPY --chown=developer:developer rollup-http/rollup-http-client ${BUILD_BASE}/tools/rollup-http/rollup-http-client
-COPY --chown=developer:developer rollup-http/.cargo ${BUILD_BASE}/tools/rollup-http/.cargo
-
-# build rollup-http-server dependencies
-FROM rust-builder as http-server-dep-builder
-COPY --chown=developer:developer rollup-http/rollup-http-server/Cargo.toml rollup-http/rollup-http-server/Cargo.lock ${BUILD_BASE}/tools/rollup-http/rollup-http-server/
-RUN cd ${BUILD_BASE}/tools/rollup-http/rollup-http-server && \
-    mkdir src/ && \
-    echo "fn main() {}" > src/main.rs && \
-    echo "pub fn dummy() {}" > src/lib.rs && \
-    cargo build --target riscv64gc-unknown-linux-gnu --release
-
-# build rollup-http-server
-FROM http-server-dep-builder as http-server-builder
-COPY --chown=developer:developer rollup-http/rollup-http-server/build.rs ${BUILD_BASE}/tools/rollup-http/rollup-http-server/
-COPY --chown=developer:developer rollup-http/rollup-http-server/src ${BUILD_BASE}/tools/rollup-http/rollup-http-server/src
-RUN cd ${BUILD_BASE}/tools/rollup-http/rollup-http-server && touch build.rs src/* && \
-    cargo build --target riscv64gc-unknown-linux-gnu --release
-
-# build echo-dapp dependencies
-FROM rust-builder as echo-dapp-dep-builder
-COPY --chown=developer:developer rollup-http/echo-dapp/Cargo.toml rollup-http/echo-dapp/Cargo.lock ${BUILD_BASE}/tools/rollup-http/echo-dapp/
-RUN cd ${BUILD_BASE}/tools/rollup-http/echo-dapp && \
-    mkdir src/ && echo "fn main() {}" > src/main.rs && \
-    cargo build --target riscv64gc-unknown-linux-gnu --release
-
-# build echo-dapp
-FROM echo-dapp-dep-builder as echo-dapp-builder
-COPY --chown=developer:developer rollup-http/echo-dapp/src ${BUILD_BASE}/tools/rollup-http/echo-dapp/src
-RUN cd ${BUILD_BASE}/tools/rollup-http/echo-dapp && touch src/* && \
-    cargo build --target riscv64gc-unknown-linux-gnu --release
+## build rust tools
+## ------------------------------------------------------------------------------
+#FROM tools-env as rust-env
+#ENV PATH="/home/developer/.cargo/bin:${PATH}"
+#
+#USER developer
+#
+#RUN cd  && \
+#    wget https://github.com/rust-lang/rustup/archive/refs/tags/1.26.0.tar.gz && \
+#    echo "6f20ff98f2f1dbde6886f8d133fe0d7aed24bc76c670ea1fca18eb33baadd808  1.26.0.tar.gz" | sha256sum --check && \
+#    tar -xzf 1.26.0.tar.gz && \
+#    bash rustup-1.26.0/rustup-init.sh \
+#        -y \
+#        --default-toolchain 1.74.0 \
+#        --profile minimal \
+#        --target riscv64gc-unknown-linux-gnu && \
+#    rm -rf rustup-1.26.0 1.26.0.tar.gz
+#
+#FROM rust-env as rust-builder
+#COPY --chown=developer:developer rollup-http/rollup-init ${BUILD_BASE}/tools/rollup-http/rollup-init
+#COPY --chown=developer:developer rollup-http/rollup-http-client ${BUILD_BASE}/tools/rollup-http/rollup-http-client
+#COPY --chown=developer:developer rollup-http/.cargo ${BUILD_BASE}/tools/rollup-http/.cargo
+#
+## build rollup-http-server dependencies
+#FROM rust-builder as http-server-dep-builder
+#COPY --chown=developer:developer rollup-http/rollup-http-server/Cargo.toml rollup-http/rollup-http-server/Cargo.lock ${BUILD_BASE}/tools/rollup-http/rollup-http-server/
+#RUN cd ${BUILD_BASE}/tools/rollup-http/rollup-http-server && \
+#    mkdir src/ && \
+#    echo "fn main() {}" > src/main.rs && \
+#    echo "pub fn dummy() {}" > src/lib.rs && \
+#    cargo build --target riscv64gc-unknown-linux-gnu --release
+#
+## build rollup-http-server
+#FROM http-server-dep-builder as http-server-builder
+#COPY --chown=developer:developer rollup-http/rollup-http-server/build.rs ${BUILD_BASE}/tools/rollup-http/rollup-http-server/
+#COPY --chown=developer:developer rollup-http/rollup-http-server/src ${BUILD_BASE}/tools/rollup-http/rollup-http-server/src
+#RUN cd ${BUILD_BASE}/tools/rollup-http/rollup-http-server && touch build.rs src/* && \
+#    cargo build --target riscv64gc-unknown-linux-gnu --release
+#
+## build echo-dapp dependencies
+#FROM rust-builder as echo-dapp-dep-builder
+#COPY --chown=developer:developer rollup-http/echo-dapp/Cargo.toml rollup-http/echo-dapp/Cargo.lock ${BUILD_BASE}/tools/rollup-http/echo-dapp/
+#RUN cd ${BUILD_BASE}/tools/rollup-http/echo-dapp && \
+#    mkdir src/ && echo "fn main() {}" > src/main.rs && \
+#    cargo build --target riscv64gc-unknown-linux-gnu --release
+#
+## build echo-dapp
+#FROM echo-dapp-dep-builder as echo-dapp-builder
+#COPY --chown=developer:developer rollup-http/echo-dapp/src ${BUILD_BASE}/tools/rollup-http/echo-dapp/src
+#RUN cd ${BUILD_BASE}/tools/rollup-http/echo-dapp && touch src/* && \
+#    cargo build --target riscv64gc-unknown-linux-gnu --release
 
 # pack tools (deb)
 # ------------------------------------------------------------------------------
@@ -149,13 +150,12 @@ COPY control ${STAGING_DEBIAN}/control
 
 COPY --from=builder ${BUILD_BASE}/tools/sys-utils/cartesi-init/cartesi-init ${STAGING_SBIN}
 COPY --from=c-builder ${BUILD_BASE}/tools/sys-utils/xhalt/xhalt ${STAGING_SBIN}
-COPY --from=c-builder ${BUILD_BASE}/tools/sys-utils/yield/yield ${STAGING_SBIN}
 COPY --from=c-builder ${BUILD_BASE}/tools/sys-utils/rollup/rollup ${STAGING_SBIN}
 COPY --from=c-builder ${BUILD_BASE}/tools/sys-utils/ioctl-echo-loop/ioctl-echo-loop ${STAGING_BIN}
 COPY --from=c-builder ${BUILD_BASE}/tools/sys-utils/misc/* ${STAGING_BIN}
-COPY --from=rust-builder ${BUILD_BASE}/tools/rollup-http/rollup-init/rollup-init ${STAGING_SBIN}
-COPY --from=http-server-builder ${BUILD_BASE}/tools/rollup-http/rollup-http-server/target/riscv64gc-unknown-linux-gnu/release/rollup-http-server ${STAGING_BIN}
-COPY --from=echo-dapp-builder ${BUILD_BASE}/tools/rollup-http/echo-dapp/target/riscv64gc-unknown-linux-gnu/release/echo-dapp ${STAGING_BIN}
+#COPY --from=rust-builder ${BUILD_BASE}/tools/rollup-http/rollup-init/rollup-init ${STAGING_SBIN}
+#COPY --from=http-server-builder ${BUILD_BASE}/tools/rollup-http/rollup-http-server/target/riscv64gc-unknown-linux-gnu/release/rollup-http-server ${STAGING_BIN}
+#COPY --from=echo-dapp-builder ${BUILD_BASE}/tools/rollup-http/echo-dapp/target/riscv64gc-unknown-linux-gnu/release/echo-dapp ${STAGING_BIN}
 
 RUN dpkg-deb -Zxz --root-owner-group --build ${STAGING_BASE} ${BUILD_BASE}/${TOOLS_DEB}
 COPY --from=c-builder ${BUILD_BASE}/${CMT_TAR_GZ} ${BUILD_BASE}/${CMT_TAR_GZ}
diff --git a/Makefile b/Makefile
index 4923d13b..f188b569 100644
--- a/Makefile
+++ b/Makefile
@@ -17,7 +17,7 @@
 MAJOR := 0
 MINOR := 14
 PATCH := 1
-LABEL :=
+LABEL :=-dev
 VERSION := $(MAJOR).$(MINOR).$(PATCH)$(LABEL)
 
 TOOLS_DEB    := machine-emulator-tools-v$(VERSION).deb
@@ -25,7 +25,7 @@ TOOLS_IMAGE  := cartesi/machine-emulator-tools:$(VERSION)
 TOOLS_ROOTFS := rootfs-tools-v$(VERSION).ext2
 CMT_TAR_GZ   := libcmt-$(VERSION).tar.gz
 
-IMAGE_KERNEL_VERSION ?= v0.19.1
+IMAGE_KERNEL_VERSION ?= v0.20.0-output-unification-rc1
 LINUX_VERSION ?= 6.5.9-ctsi-1
 LINUX_HEADERS_URLPATH := https://github.com/cartesi/image-kernel/releases/download/${IMAGE_KERNEL_VERSION}/linux-libc-dev-riscv64-cross-${LINUX_VERSION}-${IMAGE_KERNEL_VERSION}.deb
 
diff --git a/sys-utils/Makefile b/sys-utils/Makefile
index 327a0549..ed615246 100644
--- a/sys-utils/Makefile
+++ b/sys-utils/Makefile
@@ -15,7 +15,7 @@
 #
 
 
-UTILITIES := xhalt yield rollup ioctl-echo-loop
+UTILITIES := xhalt rollup ioctl-echo-loop
 UTILITIES_WITH_TOOLCHAIN := $(addsuffix -with-toolchain,$(UTILITIES))
 
 all: $(UTILITIES)
diff --git a/sys-utils/ioctl-echo-loop/Makefile b/sys-utils/ioctl-echo-loop/Makefile
index b22064f6..6319e654 100644
--- a/sys-utils/ioctl-echo-loop/Makefile
+++ b/sys-utils/ioctl-echo-loop/Makefile
@@ -29,9 +29,9 @@ RVCOPY = $(TOOLCHAIN_PREFIX)objcopy
 RVDUMP = $(TOOLCHAIN_PREFIX)objdump
 STRIP = $(TOOLCHAIN_PREFIX)strip
 CFLAGS :=-Wall -Wextra -pedantic -O2 \
-	 `PKG_CONFIG_PATH=$(HOME)/.local/libcmt/lib/pkgconfig pkg-config --cflags libcmt_mock`
+	 `PKG_CONFIG_PATH=/usr/riscv64-linux-gnu/lib/pkgconfig pkg-config --cflags libcmt`
 LDLIBS := \
-	 `PKG_CONFIG_PATH=$(HOME)/.local/libcmt/lib/pkgconfig pkg-config --libs libcmt_mock`
+	 `PKG_CONFIG_PATH=/usr/riscv64-linux-gnu/lib/pkgconfig pkg-config --libs libcmt`
 
 CONTAINER_MAKE := /usr/bin/make
 CONTAINER_BASE := /opt/cartesi/tools
diff --git a/sys-utils/rollup/Makefile b/sys-utils/rollup/Makefile
index 984e7ee3..0b8488ab 100644
--- a/sys-utils/rollup/Makefile
+++ b/sys-utils/rollup/Makefile
@@ -29,9 +29,9 @@ RVCOPY = $(TOOLCHAIN_PREFIX)objcopy
 RVDUMP = $(TOOLCHAIN_PREFIX)objdump
 STRIP = $(TOOLCHAIN_PREFIX)strip
 CXXFLAGS :=-Wall -Wextra -pedantic -O2 -std=c++17 \
-	 `PKG_CONFIG_PATH=$(HOME)/dev/libcmt/lib/pkgconfig pkg-config --cflags libcmt_mock`
+	 `PKG_CONFIG_PATH=/usr/riscv64-linux-gnu/lib/pkgconfig pkg-config --cflags libcmt`
 LDLIBS := \
-	 `PKG_CONFIG_PATH=$(HOME)/dev/libcmt/lib/pkgconfig pkg-config --libs libcmt_mock`
+	 `PKG_CONFIG_PATH=/usr/riscv64-linux-gnu/lib/pkgconfig pkg-config --libs libcmt`
 
 CONTAINER_MAKE := /usr/bin/make
 CONTAINER_BASE := /opt/cartesi/tools