diff --git a/sdk_container/src/third_party/coreos-overlay/dev-libs/rustlib/Manifest b/sdk_container/src/third_party/coreos-overlay/dev-libs/rustlib/Manifest
deleted file mode 100644
index 3c1628223b..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/dev-libs/rustlib/Manifest
+++ /dev/null
@@ -1 +0,0 @@
-DIST rustc-1.29.1-src.tar.gz 106095241 BLAKE2B c793824bcf9bd60f5e60cc97c297807d9fb998c1fe7478056a68bcc18f8c9166d71c69d6489d1898448b0b470c152206fbe2107e49dbc9a406d4e0a3c92fc97f SHA512 3151c398a79169af7dd0735d5115112cb64858120a637eda018cb4544dd9988f7540120cc0122d2af7348968285650d8605837e9f40337ec95e549d5e8763f04
diff --git a/sdk_container/src/third_party/coreos-overlay/dev-libs/rustlib/metadata.xml b/sdk_container/src/third_party/coreos-overlay/dev-libs/rustlib/metadata.xml
deleted file mode 100644
index 097975e3ad..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/dev-libs/rustlib/metadata.xml
+++ /dev/null
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
-<pkgmetadata>
-</pkgmetadata>
diff --git a/sdk_container/src/third_party/coreos-overlay/dev-libs/rustlib/rustlib-1.29.1.ebuild b/sdk_container/src/third_party/coreos-overlay/dev-libs/rustlib/rustlib-1.29.1.ebuild
deleted file mode 100644
index 4881e3701a..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/dev-libs/rustlib/rustlib-1.29.1.ebuild
+++ /dev/null
@@ -1,64 +0,0 @@
-# Copyright 2017-2018 CoreOS, Inc.
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=6
-
-inherit coreos-cargo
-
-DESCRIPTION="Standard libraries for Rust"
-HOMEPAGE="http://www.rust-lang.org/"
-LICENSE="|| ( MIT Apache-2.0 ) BSD-1 BSD-2 BSD-4 UoI-NCSA"
-
-SRC_URI="https://static.rust-lang.org/dist/rustc-${PV}-src.tar.gz"
-S="${WORKDIR}/rustc-${PV}-src"
-
-RDEPEND="!dev-lang/rust"
-
-SLOT="0/${PVR}"
-KEYWORDS="amd64 arm64"
-
-src_configure() {
-	# get rid of the top level Cargo.toml or else cargo tries to use this one
-	# too, and we don't want that since we aren't building the whole compiler
-	rm src/Cargo.toml
-
-	# Add the vendored crates to the local registry.
-	ln -fst "${ECARGO_VENDOR}" "${S}"/src/vendor/*
-}
-
-src_compile() {
-	# put the target dir somewhere predictable
-	local -x CARGO_TARGET_DIR="${T}/target"
-	# look up required crates in our fake registry
-	local -x CARGO_HOME="${ECARGO_HOME}"
-	# set this required bootstrapping variable
-	local -x CFG_COMPILER_HOST_TRIPLE="${RUST_TARGET}"
-	# fake out the compiler so that it lets us use #!feature attributes
-	# really building the std libs is bootstrapping anyway, so I don't feel bad
-	local -x RUSTC_BOOTSTRAP=1
-	# various required flags for compiling thes std libs
-	local -x RUSTFLAGS="-C prefer-dynamic -L ${CARGO_TARGET_DIR}/${RUST_TARGET}/release/deps -Z force-unstable-if-unmarked"
-	# set the metadata directory for the boostrap build
-	local -x RUSTC_ERROR_METADATA_DST="${T}/target/release/build/tmp/extended-error-metadata"
-
-	# build the std lib, which also builds all the other important libraries
-	# (core, collections, etc). build it for the target we want for this build.
-	# also make sure that the jemalloc libraries are included.
-	local -a features=( $(usex debug debug-jemalloc jemalloc) panic-unwind )
-	cargo build -p std -v --lib $(usex debug '' --release) \
-		--features "${features[*]}" \
-		--manifest-path src/libstd/Cargo.toml \
-		--target "${RUST_TARGET}" || die
-
-	cargo build -p term -v --lib $(usex debug '' --release) \
-		--manifest-path src/libterm/Cargo.toml \
-		--target "${RUST_TARGET}" || die
-
-	# Correct the directory name prior to installing it.
-	mv "${CARGO_TARGET_DIR}/${RUST_TARGET}/release/deps" "${CARGO_TARGET_DIR}/${RUST_TARGET}/release/lib"
-}
-
-src_install() {
-	insinto "/usr/$(get_libdir)/rustlib/${RUST_TARGET}"
-	doins -r "${T}/target/${RUST_TARGET}/release/lib"
-}
diff --git a/sdk_container/src/third_party/coreos-overlay/eclass/coreos-cargo.eclass b/sdk_container/src/third_party/coreos-overlay/eclass/coreos-cargo.eclass
deleted file mode 100644
index e7fd90627e..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/eclass/coreos-cargo.eclass
+++ /dev/null
@@ -1,95 +0,0 @@
-# Copyright 2017-2018 CoreOS, Inc.
-# Distributed under the terms of the GNU General Public License v2
-
-# @ECLASS: coreos-cargo.eclass
-# @MAINTAINER:
-# team-os@coreos.com
-# @AUTHOR:
-# David Michael <david.michael@coreos.com>
-# @BLURB: cargo cross-compilation support for CoreOS/ChromeOS targets
-
-if [[ -z ${_COREOS_CARGO_ECLASS} ]]; then
-_COREOS_CARGO_ECLASS=1
-
-# XXX: Don't require host dependencies to also be in the sysroot.
-CATEGORY=dev-util PN=cargo inherit cargo
-inherit toolchain-funcs
-
-EXPORT_FUNCTIONS src_unpack
-
-[[ ${CATEGORY}/${PN} != dev-libs/rustlib ]] && DEPEND="|| (
-	dev-libs/rustlib:=
-	dev-util/cargo
-)"
-
-# @FUNCTION: coreos-cargo_src_unpack
-# @DESCRIPTION:
-# This amends the src_unpack from cargo.eclass to add support for Rust
-# cross-compiling to the ChromeOS targets.  It maps the host triplet to
-# one built into rustc and uses the board root as its sysroot.
-coreos-cargo_src_unpack() {
-	debug-print-function ${FUNCNAME} "$@"
-	cargo_src_unpack "$@"
-
-	[[ ${CBUILD:-${CHOST}} != ${CHOST} ]] || return 0
-
-	# Map the SDK host triplet to one that is built into rustc.
-	function rust_builtin_target() case "$1" in
-		aarch64-*-linux-gnu) echo aarch64-unknown-linux-gnu ;;
-		x86_64-*-linux-gnu) echo x86_64-unknown-linux-gnu ;;
-		*) die "Unknown host triplet: $1" ;;
-	esac
-
-	# Set the gcc-rs flags for cross-compiling.
-	export TARGET_CFLAGS="${CFLAGS}"
-	export TARGET_CXXFLAGS="${CXXFLAGS}"
-
-	# Wrap ar for gcc-rs to work around rust-lang/cargo#4456.
-	export TARGET_AR="${T}/rustproof-ar"
-	cat <<- EOF > "${TARGET_AR}" && chmod 0755 "${TARGET_AR}"
-	#!/bin/sh
-	unset LD_LIBRARY_PATH
-	exec $(tc-getAR) "\$@"
-	EOF
-
-	# Wrap gcc for gcc-rs to work around rust-lang/cargo#4456.
-	export TARGET_CC="${T}/rustproof-cc"
-	cat <<- EOF > "${TARGET_CC}" && chmod 0755 "${TARGET_CC}"
-	#!/bin/sh
-	unset LD_LIBRARY_PATH
-	exec $(tc-getCC) "\$@"
-	EOF
-
-	# Wrap g++ for gcc-rs to work around rust-lang/cargo#4456.
-	export TARGET_CXX="${T}/rustproof-cxx"
-	cat <<- EOF > "${TARGET_CXX}" && chmod 0755 "${TARGET_CXX}"
-	#!/bin/sh
-	unset LD_LIBRARY_PATH
-	exec $(tc-getCXX) "\$@"
-	EOF
-
-	# Create a compiler wrapper that uses a sysroot for cross-compiling.
-	export RUSTC_WRAPPER="${T}/wrustc"
-	cat <<- 'EOF' > "${RUSTC_WRAPPER}" && chmod 0755 "${RUSTC_WRAPPER}"
-	#!/bin/bash -e
-	rustc=${1:?Missing rustc command}
-	shift
-	xflags=()
-	[ "x$*" = "x${*#--target}" ] || xflags=( --sysroot="${ROOT:-/}usr" )
-	exec "${rustc}" "${xflags[@]}" "$@"
-	EOF
-
-	# Compile for the built-in target, using the SDK cross-tools.
-	export RUST_TARGET=$(rust_builtin_target "${CHOST}")
-	cat <<- EOF >> "${ECARGO_HOME}/config"
-
-	[build]
-	target = "${RUST_TARGET}"
-
-	[target.${RUST_TARGET}]
-	ar = "${TARGET_AR}"
-	linker = "${TARGET_CC}"
-	EOF
-}
-
-fi
diff --git a/sdk_container/src/third_party/coreos-overlay/metadata/md5-cache/dev-libs/rustlib-1.29.1 b/sdk_container/src/third_party/coreos-overlay/metadata/md5-cache/dev-libs/rustlib-1.29.1
deleted file mode 100644
index cb3d185c63..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/metadata/md5-cache/dev-libs/rustlib-1.29.1
+++ /dev/null
@@ -1,12 +0,0 @@
-DEFINED_PHASES=compile configure install unpack
-DESCRIPTION=Standard libraries for Rust
-EAPI=6
-HOMEPAGE=http://www.rust-lang.org/
-IUSE=debug
-KEYWORDS=amd64 arm64
-LICENSE=|| ( MIT Apache-2.0 ) BSD-1 BSD-2 BSD-4 UoI-NCSA
-RDEPEND=!dev-lang/rust
-SLOT=0/1.29.1
-SRC_URI=https://static.rust-lang.org/dist/rustc-1.29.1-src.tar.gz
-_eclasses_=cargo	c11c4632a7a9d8e0b76e9f4412e76163	coreos-cargo	ecc71b7f40f79def52bcee3f1dca6559	multilib	b2f01ad412baf81650c23fcf0975fa33	multiprocessing	cac3169468f893670dac3e7cb940e045	toolchain-funcs	f164325a2cdb5b3ea39311d483988861
-_md5_=d5ff44d34648d4f7fe52a93db0d8195b