programmer is not responding

when try load simple program blink, system hangs although seem communicating.  verbose log below.  looking suggestions.  thanks.

  -- bruce

/tmp/arduino-1.0.5/hardware/tools/avrdude \
  -c/tmp/arduino-1.0.5/hardware/tools/avrdude.conf \
  -v -v -v -v -patmega328p -carduino -p/dev/ttyacm0 -b115200 -d \
  -uflash:w:/tmp/build1603974322566250262.tmp/blink.cpp.hex:i

         programmer type : arduino
         description     : arduino
avrdude: send: [41] . [80]   [20]
avrdude: recv: . [14]
avrdude: recv: . [03]
avrdude: recv: . [10]
avrdude: send: [41] . [81]   [20]
avrdude: recv: . [14]
avrdude: recv: . [04]
avrdude: recv: . [10]
avrdude: send: [41] . [82]   [20]
avrdude: recv: . [14]
avrdude: recv: . [04]
avrdude: recv: . [10]
avrdude: send: [41] . [98]   [20]
avrdude: recv: . [14]
avrdude: recv: . [03]
avrdude: recv: . [10]
         hardware version: 3
         firmware version: 4.4
avrdude: send: [41] . [84]   [20]
avrdude: recv: . [14]
avrdude: recv: . [03]
avrdude: recv: . [10]
avrdude: send: [41] . [85]   [20]
avrdude: recv: . [14]
avrdude: recv: . [03]
avrdude: recv: . [10]
avrdude: send: [41] . [86]   [20]
avrdude: recv: . [14]
avrdude: recv: . [03]
avrdude: recv: . [10]
avrdude: send: [41] . [87]   [20]
avrdude: recv: . [14]
avrdude: recv: . [03]
avrdude: recv: . [10]
avrdude: send: [41] . [89]   [20]
avrdude: recv: . [14]
avrdude: recv: . [03]
avrdude: recv: . [10]
         vtarget         : 0.3 v
         varef           : 0.3 v
         oscillator      : 28.800 khz
         sck period      : 3.3 us

avrdude: send: [41] . [81]   [20]
avrdude: recv: . [14]
avrdude: recv: . [04]
avrdude: recv: . [10]
avrdude: send: [41] . [82]   [20]
avrdude: recv: . [14]
avrdude: recv: . [04]
avrdude: recv: . [10]
avrdude: send: b [42] . [86] . [00] . [00] . [01] . [01] . [01] . [01] . [03] . [ff] . [ff] . [ff] . [ff] . [00] . [80] . [04] . [00] . [00] . [00] . [80] . [00]   [20]
avrdude: recv: . [14]
avrdude: recv: . [10]
avrdude: send: e [45] . [05] . [04] . [d7] . [c2] . [00]   [20]
avrdude: recv: . [14]
avrdude: recv: . [10]
avrdude: send: p [50]   [20]
avrdude: recv: . [14]
avrdude: recv: . [10]
avrdude: avr device initialized , ready accept instructions

reading | avrdude: send: u [75]   [20]
avrdude: recv: . [14] . [1e] . [95] . [0f] . [10]
################################################## | 100% 0.00s

avrdude: device signature = 0x1e950f
avrdude: send: v [56] . [a0] . [03] . [fc] . [00]   [20]
avrdude: recv: . [14]
avrdude: recv: . [00]
avrdude: recv: . [10]
avrdude: send: v [56] . [a0] . [03] . [fd] . [00]   [20]
avrdude: recv: . [14]
avrdude: recv: . [00]
avrdude: recv: . [10]
avrdude: send: v [56] . [a0] . [03] . [fe] . [00]   [20]
avrdude: recv: . [14]
avrdude: recv: . [00]
avrdude: recv: . [10]
avrdude: send: v [56] . [a0] . [03] . [ff] . [00]   [20]
avrdude: recv: . [14]
avrdude: recv: . [00]
avrdude: recv: . [10]
avrdude: reading input file "/tmp/build1603974322566250262.tmp/blink.cpp.hex"
avrdude: writing flash (1084 bytes):

writing | avrdude: send: u [55] . [00] . [00]   [20]
avrdude: ser_recv(): programmer not responding
avrdude: stk500_recv(): programmer not responding

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