....
  CXXLD    qt/bitcoin-qt
make[2]: Leaving directory '/home/ubuntu/build/bitcoin/distsrc-i686-pc-linux-gnu/src'
make[1]: Leaving directory '/home/ubuntu/build/bitcoin/distsrc-i686-pc-linux-gnu/src'
Making all in doc/man
make[1]: Entering directory '/home/ubuntu/build/bitcoin/distsrc-i686-pc-linux-gnu/doc/man'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/ubuntu/build/bitcoin/distsrc-i686-pc-linux-gnu/doc/man'
make[1]: Entering directory '/home/ubuntu/build/bitcoin/distsrc-i686-pc-linux-gnu'
make[1]: Nothing to be done for 'all-am'.
make[1]: Leaving directory '/home/ubuntu/build/bitcoin/distsrc-i686-pc-linux-gnu'
+ make -j1 -C src check-security
make: Entering directory '/home/ubuntu/build/bitcoin/distsrc-i686-pc-linux-gnu/src'
Checking binary security...
make: Leaving directory '/home/ubuntu/build/bitcoin/distsrc-i686-pc-linux-gnu/src'
+ make -j1 -C src check-symbols
make: Entering directory '/home/ubuntu/build/bitcoin/distsrc-i686-pc-linux-gnu/src'
Checking glibc back compat...
bitcoin-cli: symbol __cxa_thread_atexit_impl from unsupported version GLIBC_2.18
bitcoin-tx: symbol __cxa_thread_atexit_impl from unsupported version GLIBC_2.18
bitcoin-wallet: symbol __cxa_thread_atexit_impl from unsupported version GLIBC_2.18
test/test_bitcoin: symbol __cxa_thread_atexit_impl from unsupported version GLIBC_2.18
qt/bitcoin-qt: symbol __cxa_thread_atexit_impl from unsupported version GLIBC_2.18
Makefile:13425: recipe for target 'check-symbols' failed
make: *** [check-symbols] Error 1
make: Leaving directory '/home/ubuntu/build/bitcoin/distsrc-i686-pc-linux-gnu/src'