WARN log with contract myid: 0x... was triggered, but it was already seen before

gistfile1.txt

My truffle tests with oraclize / ethereum bridge fail regularly when encountering 
the above warning message.
The contract simply doesn't get the callback, so processing stops.



################################ Output of git log: ######################################
$ git log -1
commit bcfe1766cfe7a3f657c6bc587da37e966987ff6c
Author: nya1 <nya1@protonmail.com>
Date:   Sun Feb 19 15:26:17 2017 +0100

    0.4.2
    
    Handle HTTP API response status


################################ Etherum Bridge console output:################################

[2017-02-21T10:34:21.265Z] INFO new log 
	{"logIndex":3,"transactionIndex":0,"transactionHash":"0x12b08613c41f6b54839fb5e9d6ee8421a6c947c41a07c29ca9ed558aefe6117b","blockHash":"0x137bfb5c229f04903121aa89c6b3b0b78945809dc220e8c7a96a373bb2a06383","blockNumber":133,"address":"0x0c1224a1d0846ad807df1053c3245a36cf44db3d","type":"mined","event":"Log1","args":{"sender":"0xa86fca7eb69f36e0fd0f5510624b4a1d4d4b2f84","cid":"0x5933785b1b099dea8659bc53508d967990677f9494a5628f110e2795709a08af","timestamp":{"s":1,"e":0,"c":[0]},"datasource":"nested","arg":"[URL] json(https://api-test.etherisc.com/flex/ratings/rest/v1/json/flight/AF/20).ratings[0]['observations','late15','late30','late45','cancelled','diverted']","gaslimit":{"s":1,"e":5,"c":[500000]},"proofType":"0x00","gasPrice":{"s":1,"e":0,"c":[0]}}}
[2017-02-21T10:34:22.364Z] INFO new HTTP query created, id: 26a5de8ec0cca4ddcb5388f4ca5f5df008d35f65bfb2d1479cedb6f43540f3a6
[2017-02-21T10:34:22.365Z] INFO checking HTTP query 26a5de8ec0cca4ddcb5388f4ca5f5df008d35f65bfb2d1479cedb6f43540f3a6 status in 0 seconds
[2017-02-21T10:34:22.365Z] INFO checking HTTP query 26a5de8ec0cca4ddcb5388f4ca5f5df008d35f65bfb2d1479cedb6f43540f3a6 status every 5 seconds...
[2017-02-21T10:34:28.282Z] INFO 26a5de8ec0cca4ddcb5388f4ca5f5df008d35f65bfb2d1479cedb6f43540f3a6 HTTP query result: 
	{"result":{"_timestamp":1487673265,"id":"26a5de8ec0cca4ddcb5388f4ca5f5df008d35f65bfb2d1479cedb6f43540f3a6","daterange":[1487673262,1487673322],"_lock":true,"id2":"5933785b1b099dea8659bc53508d967990677f9494a5628f110e2795709a08af","actions":[],"interval":3600,"checks":[{"errors":[],"success":true,"timestamp":1487673263,"results":["[61, 5, 1, 4, 0, 0]"],"proofs":[null],"match":true}],"version":3,"_timestamp_creation":1487673262,"active":false,"hidden":false,"payload":{"conditions":[{"query":"[URL] json(https://api-test.etherisc.com/flex/ratings/rest/v1/json/flight/AF/20).ratings[0]['observations','late15','late30','late45','cancelled','diverted']","proof_type":0,"check_op":"tautology","datasource":"nested","value":null}]}},"success":true}
[2017-02-21T10:34:28.298Z] INFO sending __callback tx...
	{"contract_myid":"0x5933785b1b099dea8659bc53508d967990677f9494a5628f110e2795709a08af","contract_address":"0xa86fca7eb69f36e0fd0f5510624b4a1d4d4b2f84"}
[2017-02-21T10:34:30.163Z] WARN log with contract myid: 0xded95b344fde0c6af9e69d6a5470a41e423879e9af7e7e33116a4e9d70bd72ae was triggered, but it was already seen before
[2017-02-21T10:34:39.070Z] INFO Contract 0xa86fca7eb69f36e0fd0f5510624b4a1d4d4b2f84 __callback called
	{"myid":"0x5933785b1b099dea8659bc53508d967990677f9494a5628f110e2795709a08af","result":"[61, 5, 1, 4, 0, 0]","proof":null}

################################ testrpc setup:  ################################
#!/bin/bash
testrpc  \
--account="0xfb226e56784eac680d42effcf7ce68b12e7ea9a5501c272a62c963dfd946f7f6, 1000000000000000000000000000" \
--account="0x1be0f612afb0dd286181b4e0975410991cf9ba614c803555a77fbf8a66c6c557, 1000000000000000000000000000" \
--account="0xb063535875f9153c5b8840e6f83240d02773e4eec5cfba2b8bfebcece7e2dc18, 1000000000000000000000000000" \
--account="0x7315f07fa1983493ec8ebf8be2f75a35abc9caf50f046d57a72d2a04d87f638f, 1000000000000000000000000000" \
--account="0xffc3fddae3bde34a82047311859e35146636fae1ae1e8e9ecae34bf4dbc5119e, 1000000000000000000000000000" \
--account="0x3d525abe43f6f58d0d12ae4e3e4dd3b5b93c536d0254df5dd078373cdbed5474, 1000000000000000000000000000" \
--account="0x757cf57f0a1e14ad5732cd6ccee6d8a86bb55836052ba5708429803a16ec9396, 1000000000000000000000000000" \
--account="0x92161f12973f892d2fcd7c93bbdc320a57250fe3e7252a308a463efd20091ff2, 1000000000000000000000000000" \
--account="0xcbbb8449176d0192ca8a8dccc7862bae63e7fcab2ec282b7075d8d1a0164a592, 1000000000000000000000000000" \
--account="0x36c13739e7957d806b0b669304470433f5e42d694ba4e5eef280440ef6ef35a2, 1000000000000000000000000000" \
--account="0xa2a202e3b3ea1baee0e6fb4f91f937d42cb9ca80852d57b4b89255a72f62e20b, 1000000000000000000000000000" \
--account="0x5b72bd0e9ab24da7177ac1cac9877e3fc804e8e0c844c0805855e9519d859dd4, 1000000000000000000000000000" \
--account="0xadd9f2261722277adfc34c2ae6c5d9526f5fd7d33bb4d32b1825a2721b8d0481, 1000000000000000000000000000" \
--account="0xb8981af74ec1d615235d164154125dcab18b597acec6143f761c90c066bb4f62, 1000000000000000000000000000" \
--account="0x7edb8085604824d4a776e5bd0a1ddaa4dda598a4850b831d671d3deab5593756, 1000000000000000000000000000" \
--account="0x5d792861dc50f23bd39be06532752feadc304d1e7e796af892cecd5a4e12b4a3, 1000000000000000000000000000" \
--account="0x3dd9fb09b4e0b65b65c0efcede6bdb96e34803c7bff8e07d9797f3ec3eac21f9, 1000000000000000000000000000" \
--account="0xbbd8299fac74c43a2f6528eef58e1357621e18db5f44bfa0d4744f52c5be7fca, 1000000000000000000000000000" \
--account="0xb25f213aabd7085a75e514e52db6f17d2fbd75b52bb9cc8f062af56b57af72ec, 1000000000000000000000000000" \
--account="0x13a6b15eb808f61ffddd50c1fd3ce86523363c3d3e807e9871f3954aa554ccef, 1000000000000000000000000000"