Created attachment 555792 [details] build.log I failed to emerge dev-util/cargo-0.30.0 recently. It prompts that: Compiling libz-sys v1.0.22 error[E0425]: cannot find function `read_to_string` in module `fs` --> /var/tmp/portage/dev-util/cargo-0.30.0/work/cargo_home/gentoo/libz-sys-1.0.22/build.rs:115:13 | 115 | fs::read_to_string("src/zlib/zlib.pc.in") | ^^^^^^^^^^^^^^ did you mean `read_string`? error[E0658]: use of unstable library feature 'fs_read_write' (see issue #46588) --> /var/tmp/portage/dev-util/cargo-0.30.0/work/cargo_home/gentoo/libz-sys-1.0.22/build.rs:113:5 | 113 | fs::write( | ^^^^^^^^^ error: aborting due to 2 previous errors error: Could not compile `libz-sys`. warning: build failed, waiting for other jobs to finish... error: build failed
$ emerge --info '=dev-util/cargo-0.30.0::gentoo' Portage 2.3.51 (python 3.6.5-final-0, default/linux/amd64/17.0/desktop/gnome/systemd, gcc-7.3.0, glibc-2.27-r6, 4.14.78-gentoo x86_64) ================================================================= System Settings ================================================================= System uname: Linux-4.14.78-gentoo-x86_64-Intel-R-_Core-TM-_i7-7700HQ_CPU_@_2.80GHz-with-gentoo-2.6 KiB Mem: 16124188 total, 11003628 free KiB Swap: 33554428 total, 32607948 free Timestamp of repository gentoo: Tue, 20 Nov 2018 04:30:02 +0000 Head commit of repository gentoo: 53839f0b565fd2533a4e3c05c1a99f49695289fc sh bash 4.4_p12 ld GNU ld (Gentoo 2.30 p5) 2.30.0 ccache version 3.3.4 [disabled] app-shells/bash: 4.4_p12::gentoo dev-java/java-config: 2.2.0-r4::gentoo dev-lang/perl: 5.24.3-r1::gentoo dev-lang/python: 2.7.15::gentoo, 3.5.5::gentoo, 3.6.5::gentoo dev-util/ccache: 3.3.4-r1::gentoo dev-util/cmake: 3.9.6::gentoo dev-util/pkgconfig: 0.29.2::gentoo sys-apps/baselayout: 2.6-r1::gentoo sys-apps/sandbox: 2.13::gentoo sys-devel/autoconf: 2.13::gentoo, 2.69-r4::gentoo sys-devel/automake: 1.11.6-r3::gentoo, 1.15.1-r2::gentoo sys-devel/binutils: 2.30-r4::gentoo sys-devel/gcc: 7.3.0-r3::gentoo, 8.2.0-r4::gentoo sys-devel/gcc-config: 1.8-r1::gentoo sys-devel/libtool: 2.4.6-r3::gentoo sys-devel/make: 4.2.1-r4::gentoo sys-kernel/linux-headers: 4.13::gentoo (virtual/os-headers) sys-libs/glibc: 2.27-r6::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 sync-rsync-verify-metamanifest: yes sync-rsync-verify-jobs: 1 sync-rsync-verify-max-age: 24 sync-rsync-extra-opts: gentoo-zh location: /var/lib/layman/gentoo-zh sync-type: laymansync sync-uri: git://github.com/microcai/gentoo-zh.git masters: gentoo priority: 50 science location: /var/lib/layman/science sync-type: laymansync sync-uri: https://anongit.gentoo.org/git/proj/sci.git masters: gentoo priority: 50 wine location: /var/lib/layman/wine sync-type: laymansync sync-uri: https://anongit.gentoo.org/git/repo/proj/wine.git masters: gentoo priority: 50 ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt /usr/share/maven-bin-3.3/conf /var/spool/torque" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php7.1/ext-active/ /etc/php/apache2-php7.2/ext-active/ /etc/php/cgi-php7.1/ext-active/ /etc/php/cgi-php7.2/ext-active/ /etc/php/cli-php7.1/ext-active/ /etc/php/cli-php7.2/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-march=native -O2 -pipe" DISTDIR="/usr/portage/distfiles" ENV_UNSET="DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync multilib-strict news parallel-fetch preserve-libs protect-owned sandbox sfperms splitdebug strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="en_US.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j9" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git" PORTAGE_TMPDIR="/var/tmp" USE="X a52 aac acl acpi aes alsa amd64 avx avx2 bash-completion berkdb bluetooth branding bzip2 cairo cdda cdr cjk cli colord crypt cups cxx dbus dri dts dvd dvdr eds emboss encode evo exif fam flac fma3 fortran gdbm gif glamor gnome gnome-keyring gnome-online-accounts gpm gstreamer gtk ibus iconv introspection ipv6 jpeg lcms ldap libnotify libsecret libtirpc mad mmx mmxext mng mp3 mp4 mpeg mtp multilib nautilus ncurses networkmanager nls nptl ogg opengl openmp pam pango pclmul pcre pdf php png policykit popcnt ppds pulseaudio python qt5 readline sdl seccomp spell sse sse2 sse3 sse4_1 sse4_2 ssl ssse3 startup-notification svg systemd tcpd tiff tracker truetype udev udisks unicode upower usb vim-syntax vorbis wxwidgets x264 xattr xcb xml xv xvid zlib" ABI_X86="64 32" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias http2 proxy proxy_http proxy_ajp proxy_connect auth_digest" APACHE2_MPMS="event" CALLIGRA_FEATURES="karbon plan sheets stage words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx avx2 fma3 mmx mmxext pclmul popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" GRUB_PLATFORMS="efi-64" INPUT_DEVICES="libinput keyboard mouse" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-6" POSTGRES_TARGETS="postgres9_5 postgres10" PYTHON_SINGLE_TARGET="python3_6" PYTHON_TARGETS="python2_7 python3_6" RUBY_TARGETS="ruby23 ruby24" USERLAND="GNU" VIDEO_CARDS="amdgpu fbdev intel nouveau radeon radeonsi vesa dummy v4l" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CC, CPPFLAGS, CTARGET, CXX, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
I have solved this problem, by manually unmerge and remerge both dev-lung/rust and dev-lung/rust-bin again. Before that, I checked the package version of 'rustc' command and found that it belongs to and old version of 'dev-lung/rust-bin', and I have also another new version 'dev-lung/rust' installed. I guess the confliction caused the reported error. I will change this issue's status to 'RESOLVED'.
