Mock Version: 4.1
Mock Version: 4.1
Mock Version: 4.1
ENTER ['do_with_status'](['bash', '--login', '-c', '/usr/bin/rpmbuild -bs --noclean --target x86_64 --nodeps /builddir/build/SPECS/mysql.spec'], chrootPath='/var/lib/mock/dist-ocs23-rebuild-test-0-build-266647-25333/root'env={'TERM': 'vt100', 'SHELL': '/bin/bash', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'PROMPT_COMMAND': 'printf "\\033]0;<mock-chroot>\\007"', 'PS1': '<mock-chroot> \\s-\\v\\$ ', 'LANG': 'C.UTF-8'}shell=Falselogger=<mockbuild.trace_decorator.getLog object at 0x7f032545cb90>timeout=86400uid=981gid=135user='mockbuild'nspawn_args=[]unshare_net=TrueprintOutput=False)
Executing command: ['bash', '--login', '-c', '/usr/bin/rpmbuild -bs --noclean --target x86_64 --nodeps /builddir/build/SPECS/mysql.spec'] with env {'TERM': 'vt100', 'SHELL': '/bin/bash', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'PROMPT_COMMAND': 'printf "\\033]0;<mock-chroot>\\007"', 'PS1': '<mock-chroot> \\s-\\v\\$ ', 'LANG': 'C.UTF-8'} and shell False
Building target platforms: x86_64
Building for target x86_64
Wrote: /builddir/build/SRPMS/mysql-8.0.37-3.ocs23.src.rpm
Child return code was: 0
ENTER ['do_with_status'](['bash', '--login', '-c', '/usr/bin/rpmbuild -bb --noclean --target x86_64 --nodeps /builddir/build/SPECS/mysql.spec'], chrootPath='/var/lib/mock/dist-ocs23-rebuild-test-0-build-266647-25333/root'env={'TERM': 'vt100', 'SHELL': '/bin/bash', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'PROMPT_COMMAND': 'printf "\\033]0;<mock-chroot>\\007"', 'PS1': '<mock-chroot> \\s-\\v\\$ ', 'LANG': 'C.UTF-8'}shell=Falselogger=<mockbuild.trace_decorator.getLog object at 0x7f032545cb90>timeout=86400uid=981gid=135user='mockbuild'nspawn_args=[]unshare_net=TrueprintOutput=False)
Executing command: ['bash', '--login', '-c', '/usr/bin/rpmbuild -bb --noclean --target x86_64 --nodeps /builddir/build/SPECS/mysql.spec'] with env {'TERM': 'vt100', 'SHELL': '/bin/bash', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'PROMPT_COMMAND': 'printf "\\033]0;<mock-chroot>\\007"', 'PS1': '<mock-chroot> \\s-\\v\\$ ', 'LANG': 'C.UTF-8'} and shell False
Building target platforms: x86_64
Building for target x86_64
Executing(%prep): /bin/sh -e /var/tmp/rpm-tmp.gU1SN6
+ umask 022
+ cd /builddir/build/BUILD
+ cd /builddir/build/BUILD
+ rm -rf mysql-8.0.37
+ /usr/lib/rpm/rpmuncompress -x /builddir/build/SOURCES/mysql-boost-8.0.37.tar.gz
+ STATUS=0
+ '[' 0 -ne 0 ']'
+ cd mysql-8.0.37
+ /usr/bin/chmod -Rf a+rX,u+w,g-w,o-w .
+ /usr/lib/rpm/rpmuncompress /builddir/build/SOURCES/mysql-install-test.patch
+ /usr/bin/patch -p1 -s --fuzz=0 --no-backup-if-mismatch
+ /usr/lib/rpm/rpmuncompress /builddir/build/SOURCES/mysql-file-contents.patch
+ /usr/bin/patch -p1 -s --fuzz=0 --no-backup-if-mismatch
+ /usr/lib/rpm/rpmuncompress /builddir/build/SOURCES/mysql-scripts.patch
+ /usr/bin/patch -p1 -s --fuzz=0 --no-backup-if-mismatch
+ /usr/lib/rpm/rpmuncompress /builddir/build/SOURCES/mysql-paths.patch
+ /usr/bin/patch -p1 -s --fuzz=0 --no-backup-if-mismatch
+ /usr/lib/rpm/rpmuncompress /builddir/build/SOURCES/mysql-sharedir.patch
+ /usr/bin/patch -p1 -s --fuzz=0 --no-backup-if-mismatch
+ /usr/lib/rpm/rpmuncompress /builddir/build/SOURCES/mysql-rpath.patch
+ /usr/bin/patch -p1 -s --fuzz=0 --no-backup-if-mismatch
+ /usr/lib/rpm/rpmuncompress /builddir/build/SOURCES/mysql-mtr.patch
+ /usr/bin/patch -p1 -s --fuzz=0 --no-backup-if-mismatch
+ /usr/lib/rpm/rpmuncompress /builddir/build/SOURCES/mysql-c99.patch
+ /usr/bin/patch -p1 -s --fuzz=0 --no-backup-if-mismatch
+ /usr/lib/rpm/rpmuncompress /builddir/build/SOURCES/fix_build_with_protobuf_22+_in_linux.patch
+ /usr/bin/patch -p1 -s --fuzz=0 --no-backup-if-mismatch
+ /usr/lib/rpm/rpmuncompress /builddir/build/SOURCES/mysql-8.0.37-fix-build-error-for-loongarch64.patch
+ /usr/bin/patch -p1 -s --fuzz=0 --no-backup-if-mismatch
++ echo 1.77.0
++ tr . _
+ pushd boost/boost_1_77_0
~/build/BUILD/mysql-8.0.37/boost/boost_1_77_0 ~/build/BUILD/mysql-8.0.37
+ /usr/lib/rpm/rpmuncompress /builddir/build/SOURCES/boost-1.58.0-pool.patch
+ /usr/bin/patch -p0 -s --fuzz=0 --no-backup-if-mismatch
+ /usr/lib/rpm/rpmuncompress /builddir/build/SOURCES/boost-1.57.0-mpl-print.patch
+ /usr/bin/patch -p1 -s --fuzz=0 --no-backup-if-mismatch
+ /usr/lib/rpm/rpmuncompress /builddir/build/SOURCES/boost-1.76.0-fix_multiprecision_issue_419-ppc64le.patch
+ /usr/bin/patch -p2 -s --fuzz=0 --no-backup-if-mismatch
+ popd
~/build/BUILD/mysql-8.0.37
+ cat /builddir/build/SOURCES/skipped-tests-list-base.list
+ tee -a mysql-test/platform-specific-tests.list
# Fails on all arches
main.subquery_sj_mat_bka_nobnl             : BUG#0 failing since 8.0.24 
main.derived_limit                         : BUG#0 failing since 8.0.24 
main.explain_tree                          : BUG#0 failing since 8.0.24
auth_sec.keyring_file_data_qa              : BUG#0 failing
innodb.alter_kill                          : BUG#0 failing
main.mtr_unit_tests                        : BUG#0 failing
# Fails when -DENABLED_LOCAL_INFILE=ON
main.mysql_load_data_local_dir             : BUG#0 failing
# Unstable
innodb.innodb_force_recovery               : BUG#0 unstable since 8.0.24
clone.local_dml_auto_tune                  : BUG#0 unstable on x86_64 and i686
perfschema.threads_mysql                   : BUG#0 unstable on x86_64 and i686
rpl_gtid.rpl_multi_source_mtr_includes     : BUG#0 unstable on x86_64 and i686
# Failing on 32-bit arches: armv7hl i686 s390x; since MySQL 8.0.25
x.connection_unixsocket                    : BUG#0
x.connection_unixsocket_invalid            : BUG#0
x.connection_unixsocket_lock               : BUG#0
innodb.innodb_bug-13628249                 : BUG#0
# Failing for MySQL release 8.0.27
auth_sec.admin_channel_tls                 : BUG#0
auth_sec.openssl_cert_generation           : BUG#0
auth_sec.ssl_mode                          : BUG#0
auth_sec.tls                               : BUG#0
binlog.binlog_grant_alter_user             : BUG#0
main.grant_alter_user_qa                   : BUG#0
main.grant_user_lock_qa                    : BUG#0
main.openssl_1                             : BUG#0
main.ssl_cipher                            : BUG#0
main.ssl_dynamic                           : BUG#0
x.connection_openssl                       : BUG#0
x.connection_openssl_unixsocket            : BUG#0
x.connection_tls_version                   : BUG#0
main.slow_log                              : BUG#0
main.ctype_unicode900_as_cs                : BUG#0
# Failing consistently, but sometimes on CI mock build
main.loaddata_special                      : BUG#0
# Failing on all arches since MySQL 8.0.28
innodb.trigger_function_lock_compare       : BUG#0
# Failing only in i686 since MySQL 8.0.28
main.index_merge_myisam                    : BUG#0
# Failing since MySQL 8.0.29
main.mysqlpump_bugs                        : BUG#0
main.slow_log                              : BUG#0
# Failing since MySQL 8.0.30
auth_sec.fips                              : BUG#0
rpl.rpl_fips                               : BUG#0
# Failing since 8.0.34
binlog.binlog_mysqlbinlog_linux            : BUG#0
+ cp /builddir/build/SOURCES/my.cnf.in /builddir/build/SOURCES/mysql.tmpfiles.d.in /builddir/build/SOURCES/mysql.service.in /builddir/build/SOURCES/mysql-prepare-db-dir.sh /builddir/build/SOURCES/mysql-check-socket.sh /builddir/build/SOURCES/mysql-scripts-common.sh /builddir/build/SOURCES/mysql-wait-stop.sh /builddir/build/SOURCES/mysql@.service.in /builddir/build/SOURCES/server.cnf.in scripts
+ RPM_EC=0
++ jobs -p
+ exit 0
Executing(%build): /bin/sh -e /var/tmp/rpm-tmp.BBY4cl
+ umask 022
+ cd /builddir/build/BUILD
+ CFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/OpenCloudOS/OpenCloudOS-hardened-cc1 -fstack-protector-strong  -m64 -march=x86-64-v2 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection'
+ export CFLAGS
+ CXXFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/OpenCloudOS/OpenCloudOS-hardened-cc1 -fstack-protector-strong  -m64 -march=x86-64-v2 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection'
+ export CXXFLAGS
+ FFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/OpenCloudOS/OpenCloudOS-hardened-cc1 -fstack-protector-strong  -m64 -march=x86-64-v2 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -I/usr/lib64/gfortran/modules'
+ export FFLAGS
+ FCFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/OpenCloudOS/OpenCloudOS-hardened-cc1 -fstack-protector-strong  -m64 -march=x86-64-v2 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -I/usr/lib64/gfortran/modules'
+ export FCFLAGS
+ LDFLAGS='-Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/OpenCloudOS/OpenCloudOS-hardened-ld  -Wl,--build-id=sha1'
+ export LDFLAGS
+ LT_SYS_LIBRARY_PATH=/usr/lib64:
+ export LT_SYS_LIBRARY_PATH
+ CC=gcc
+ export CC
+ CXX=g++
+ export CXX
+ cd mysql-8.0.37
+ CFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/OpenCloudOS/OpenCloudOS-hardened-cc1 -fstack-protector-strong  -m64 -march=x86-64-v2 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection'
+ export CFLAGS
+ CXXFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/OpenCloudOS/OpenCloudOS-hardened-cc1 -fstack-protector-strong  -m64 -march=x86-64-v2 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection'
+ export CXXFLAGS
+ FFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/OpenCloudOS/OpenCloudOS-hardened-cc1 -fstack-protector-strong  -m64 -march=x86-64-v2 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -I/usr/lib64/gfortran/modules'
+ export FFLAGS
+ FCFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/OpenCloudOS/OpenCloudOS-hardened-cc1 -fstack-protector-strong  -m64 -march=x86-64-v2 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -I/usr/lib64/gfortran/modules'
+ export FCFLAGS
+ LDFLAGS='-Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/OpenCloudOS/OpenCloudOS-hardened-ld  -Wl,--build-id=sha1'
+ export LDFLAGS
+ LT_SYS_LIBRARY_PATH=/usr/lib64:
+ export LT_SYS_LIBRARY_PATH
+ CC=gcc
+ export CC
+ CXX=g++
+ export CXX
+ /usr/bin/cmake -S . -B x86_64-OpenCloudOS-linux-gnu -DCMAKE_C_FLAGS_RELEASE:STRING=-DNDEBUG -DCMAKE_CXX_FLAGS_RELEASE:STRING=-DNDEBUG -DCMAKE_Fortran_FLAGS_RELEASE:STRING=-DNDEBUG -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON -DCMAKE_INSTALL_DO_STRIP:BOOL=OFF -DCMAKE_INSTALL_PREFIX:PATH=/usr -DINCLUDE_INSTALL_DIR:PATH=/usr/include -DLIB_INSTALL_DIR:PATH=/usr/lib64 -DSYSCONF_INSTALL_DIR:PATH=/etc -DSHARE_INSTALL_PREFIX:PATH=/usr/share -DLIB_SUFFIX=64 -DBUILD_SHARED_LIBS:BOOL=ON -DBUILD_CONFIG=mysql_release -DFEATURE_SET=community -DINSTALL_LAYOUT=RPM -DDAEMON_NAME=mysqld -DDAEMON_NO_PREFIX=mysqld -DLOGFILE_RPM=/var/log/mysql/mysqld.log -DPID_FILE_DIR=/run/mysqld -DNICE_PROJECT_NAME=MySQL -DCMAKE_INSTALL_PREFIX=/usr -DSYSCONFDIR=/etc -DSYSCONF2DIR=/etc/my.cnf.d -DINSTALL_DOCDIR=share/doc/mysql -DINSTALL_DOCREADMEDIR=share/doc/mysql -DINSTALL_INCLUDEDIR=include/mysql -DINSTALL_INFODIR=share/info -DINSTALL_LIBEXECDIR=libexec -DINSTALL_LIBDIR=lib64/mysql -DRPATH_LIBDIR=/usr/lib64 -DINSTALL_MANDIR=share/man -DINSTALL_MYSQLSHAREDIR=share/mysql -DINSTALL_MYSQLTESTDIR=share/mysql-test -DINSTALL_PLUGINDIR=lib64/mysql/plugin -DINSTALL_SBINDIR=bin -DINSTALL_SUPPORTFILESDIR=share/mysql -DMYSQL_DATADIR=/var/lib/mysql -DMYSQL_UNIX_ADDR=/var/lib/mysql/mysql.sock -DENABLED_LOCAL_INFILE=ON -DWITH_SYSTEMD=1 -DSYSTEMD_SERVICE_NAME=mysqld -DSYSTEMD_PID_DIR=/run/mysqld -DWITH_INNODB_MEMCACHED=ON -DWITH_NUMA=ON -DWITH_ROUTER=OFF -DWITH_SYSTEM_LIBS=ON -DWITH_MECAB=system -DWITH_FIDO=system -DWITH_BOOST=boost -DREPRODUCIBLE_BUILD=OFF '-DCMAKE_C_FLAGS=-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/OpenCloudOS/OpenCloudOS-hardened-cc1 -fstack-protector-strong  -m64 -march=x86-64-v2 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection' '-DCMAKE_CXX_FLAGS=-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/OpenCloudOS/OpenCloudOS-hardened-cc1 -fstack-protector-strong  -m64 -march=x86-64-v2 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection' '-DCMAKE_EXE_LINKER_FLAGS=-pie -Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/OpenCloudOS/OpenCloudOS-hardened-ld  -Wl,--build-id=sha1' -DTMPDIR=/var/tmp '-DWITH_MYSQLD_LDFLAGS=-Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/OpenCloudOS/OpenCloudOS-hardened-ld  -Wl,--build-id=sha1' '-DCMAKE_C_LINK_FLAGS=-Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/OpenCloudOS/OpenCloudOS-hardened-ld  -Wl,--build-id=sha1' '-DCMAKE_CXX_LINK_FLAGS=-Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/OpenCloudOS/OpenCloudOS-hardened-ld  -Wl,--build-id=sha1' -DCMAKE_SKIP_INSTALL_RPATH=YES -DWITH_UNIT_TESTS=0
-- Running cmake version 3.26.5
-- Could NOT find Git (missing: GIT_EXECUTABLE) 
-- CMAKE_MODULE_PATH is /builddir/build/BUILD/mysql-8.0.37/cmake
-- MySQL 8.0.37
-- The C compiler identification is GNU 12.3.1
-- The CXX compiler identification is GNU 12.3.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/gcc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/g++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Source directory /builddir/build/BUILD/mysql-8.0.37
-- Binary directory /builddir/build/BUILD/mysql-8.0.37/x86_64-OpenCloudOS-linux-gnu
-- CMAKE_GENERATOR: Unix Makefiles
-- Looking for include file libaio.h
-- Looking for include file libaio.h - found
-- Looking for io_queue_init in aio
-- Looking for io_queue_init in aio - found
-- Looking for SHM_HUGETLB
-- Looking for SHM_HUGETLB - found
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of void *
-- Check size of void * - done
-- SIZEOF_VOIDP 8
-- Performing Test HAVE_C_FLOATING_POINT_FUSED_MADD
-- Performing Test HAVE_C_FLOATING_POINT_FUSED_MADD - Failed
-- Performing Test HAVE_CXX_FLOATING_POINT_FUSED_MADD
-- Performing Test HAVE_CXX_FLOATING_POINT_FUSED_MADD - Failed
-- Packaging as: mysql-8.0.37-Linux-x86_64
-- Local boost dir /builddir/build/BUILD/mysql-8.0.37/boost/boost_1_77_0
-- Found /builddir/build/BUILD/mysql-8.0.37/boost/boost_1_77_0/boost/version.hpp 
-- BOOST_VERSION_NUMBER is #define BOOST_VERSION 107700
-- BOOST_INCLUDE_DIR /builddir/build/BUILD/mysql-8.0.37/boost/boost_1_77_0
-- Enabling installation of systemd support files...
-- Checking for module 'systemd'
--   Package 'systemd', required by 'virtual:world', not found
CMake Error at cmake/systemd.cmake:60 (MESSAGE):
  Unable to detect systemd support on build machine, Aborting cmake build.
Call Stack (most recent call first):
  cmake/systemd.cmake:80 (MYSQL_CHECK_SYSTEMD)
  CMakeLists.txt:1569 (INCLUDE)
-- Configuring incomplete, errors occurred!
error: Bad exit status from /var/tmp/rpm-tmp.BBY4cl (%build)
    Bad exit status from /var/tmp/rpm-tmp.BBY4cl (%build)
RPM build errors:
Child return code was: 1
EXCEPTION: [Error('Command failed: \n # bash --login -c /usr/bin/rpmbuild -bb --noclean --target x86_64 --nodeps /builddir/build/SPECS/mysql.spec\n', 1)]
Traceback (most recent call last):
  File "/usr/lib/python3.11/site-packages/mockbuild/trace_decorator.py", line 93, in trace
    result = func(*args, **kw)
             ^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/mockbuild/util.py", line 597, in do_with_status
    raise exception.Error("Command failed: \n # %s\n%s" % (command, output), child.returncode)
mockbuild.exception.Error: Command failed: 
 # bash --login -c /usr/bin/rpmbuild -bb --noclean --target x86_64 --nodeps /builddir/build/SPECS/mysql.spec