[ebuild   R   ] dev-lang/rust-1.26.1  USE="jemalloc -debug -doc (-extended)" LLVM_TARGETS="(X86) -AArch64 -AMDGPU -ARM -BPF -Hexagon -Lanai -MSP430 -Mips -NVPTX -PowerPC -Sparc -SystemZ -XCore" 

Would you like to merge these packages? [Yes/No] 
>>> Verifying ebuild manifests
>>> Emerging (1 of 1) dev-lang/rust-1.26.1::gentoo
>>> Failed to emerge dev-lang/rust-1.26.1, Log file:
>>>  '/var/log/portage/dev-lang:rust-1.26.1:20180603-183444.log'
>>> Jobs: 0 of 1 complete, 1 failed                 Load avg: 0.93, 0.54, 0.33
 * Package:    dev-lang/rust-1.26.1
 * Repository: gentoo
 * Maintainer: rust@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc jemalloc kernel_linux llvm_targets_X86 userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox
install: creating uninstall script at /var/tmp/portage/dev-lang/rust-1.26.1/work/rust-stage0/lib/rustlib/uninstall.sh
install: installing component 'rustc'
install: installing component 'cargo'
install: installing component 'rls-preview'
install: installing component 'rustfmt-preview'
install: installing component 'rust-analysis-x86_64-unknown-linux-gnu'
install: installing component 'rust-std-x86_64-unknown-linux-gnu'
install: installing component 'rust-docs'

    Rust is ready to roll.

env: ‘-O2’: No such file or directory
 * ERROR: dev-lang/rust-1.26.1::gentoo failed (compile phase):
 *   (no error message)
 * 
 * Call stack:
 *     ebuild.sh, line 124:  Called src_compile
 *   environment, line 2612:  Called die
 * The specific snippet of code:
 *       env $(cat "${S}"/config.env) ./x.py build --verbose --config="${S}"/config.toml -j$(makeopts_jobs) || die
 * 
 * If you need support, post the output of `emerge --info '=dev-lang/rust-1.26.1::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=dev-lang/rust-1.26.1::gentoo'`.
 * The complete build log is located at '/var/log/portage/dev-lang:rust-1.26.1:20180603-183444.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/dev-lang/rust-1.26.1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-lang/rust-1.26.1/temp/environment'.
 * Working directory: '/var/tmp/portage/dev-lang/rust-1.26.1/work/rustc-1.26.1-src'
 * S: '/var/tmp/portage/dev-lang/rust-1.26.1/work/rustc-1.26.1-src'

 * Messages for package dev-lang/rust-1.26.1:
 * Log file: /var/log/portage/dev-lang:rust-1.26.1:20180603-183444.log

 * ERROR: dev-lang/rust-1.26.1::gentoo failed (compile phase):
 *   (no error message)
 * 
 * Call stack:
 *     ebuild.sh, line 124:  Called src_compile
 *   environment, line 2612:  Called die
 * The specific snippet of code:
 *       env $(cat "${S}"/config.env) ./x.py build --verbose --config="${S}"/config.toml -j$(makeopts_jobs) || die
 * 
 * If you need support, post the output of `emerge --info '=dev-lang/rust-1.26.1::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=dev-lang/rust-1.26.1::gentoo'`.
 * The complete build log is located at '/var/log/portage/dev-lang:rust-1.26.1:20180603-183444.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/dev-lang/rust-1.26.1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-lang/rust-1.26.1/temp/environment'.
 * Working directory: '/var/tmp/portage/dev-lang/rust-1.26.1/work/rustc-1.26.1-src'
 * S: '/var/tmp/portage/dev-lang/rust-1.26.1/work/rustc-1.26.1-src'