High memory usage on ARM with 1.2.2

Created by: M5oul

2017-04-16T17:36:36+02:00 - error:  Error: spawn ENOMEM
    at exports._errnoException (util.js:1022:11)
    at ChildProcess.spawn (internal/child_process.js:313:11)
    at exports.spawn (child_process.js:380:9)
    at Object.exports.fork (child_process.js:58:10)
    at /opt/duniter/sources/node_modules/duniter-prover/lib/engine.js:33:33
    at next (native)
    at onFulfilled (/opt/duniter/sources/node_modules/co/index.js:65:19)
    at /opt/duniter/sources/node_modules/co/index.js:54:5
    at co (/opt/duniter/sources/node_modules/co/index.js:50:10)
    at restart (/opt/duniter/sources/node_modules/duniter-prover/lib/engine.js:31:25)
    at /opt/duniter/sources/node_modules/duniter-prover/lib/engine.js:59:11
    at next (native)
    at onFulfilled (/opt/duniter/sources/node_modules/co/index.js:65:19)
    at /opt/duniter/sources/node_modules/co/index.js:54:5
    at co (/opt/duniter/sources/node_modules/co/index.js:50:10)
    at ask (/opt/duniter/sources/node_modules/duniter-prover/lib/engine.js:57:35)
    at PowEngine.status (/opt/duniter/sources/node_modules/duniter-prover/lib/engine.js:80:23)
    at Timeout.setInterval [as _onTimeout] (/opt/duniter/sources/node_modules/duniter-prover/lib/blockProver.js:219:26)
    at ontimeout (timers.js:365:14)
    at tryOnTimeout (timers.js:237:5)
    at Timer.listOnTimeout (timers.js:207:5)
2017-04-16T17:36:36+02:00 - error: Unhandled rejection: Error: spawn ENOMEM
2017-04-16T17:36:36+02:00 - error:  Error: spawn ENOMEM
    at exports._errnoException (util.js:1022:11)
    at ChildProcess.spawn (internal/child_process.js:313:11)
    at exports.spawn (child_process.js:380:9)
    at Object.exports.fork (child_process.js:58:10)
    at /opt/duniter/sources/node_modules/duniter-prover/lib/engine.js:33:33
    at next (native)
    at onFulfilled (/opt/duniter/sources/node_modules/co/index.js:65:19)
    at /opt/duniter/sources/node_modules/co/index.js:54:5
    at co (/opt/duniter/sources/node_modules/co/index.js:50:10)
    at restart (/opt/duniter/sources/node_modules/duniter-prover/lib/engine.js:31:25)
    at /opt/duniter/sources/node_modules/duniter-prover/lib/engine.js:59:11
    at next (native)
    at onFulfilled (/opt/duniter/sources/node_modules/co/index.js:65:19)
    at /opt/duniter/sources/node_modules/co/index.js:54:5
    at co (/opt/duniter/sources/node_modules/co/index.js:50:10)
    at ask (/opt/duniter/sources/node_modules/duniter-prover/lib/engine.js:57:35)
    at PowEngine.status (/opt/duniter/sources/node_modules/duniter-prover/lib/engine.js:80:23)
    at Timeout.setInterval [as _onTimeout] (/opt/duniter/sources/node_modules/duniter-prover/lib/blockProver.js:219:26)
    at ontimeout (timers.js:365:14)
    at tryOnTimeout (timers.js:237:5)
    at Timer.listOnTimeout (timers.js:207:5)