"Unexpected end of JSON input" when running test

[travs]

Running this file it fails on the linked line, when uncommented.

Output like this:

+ dapp quicktest out out/simpleAdapter.bin out/rewards.bin out/safeMath.bin                                                                                                                    
Secp256k1 bindings are not compiled. Pure JS implementation will be used.                                                                                                                      
Trying out/DataFeedTest, out/assets/AssetTest, out/datafeeds/DataFeedTest, out/participation/ParticipationTest, out/version/VersionTest...                                                     
....thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Invalid character '_' at position 47616', /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libcore
/result.rs:868                                                                                                                                                                                 
note: Run with `RUST_BACKTRACE=1` for a backtrace.                                                                                                                                             
undefined:1                                                                                                                                                                                    
                                                                                                                                                                                               
                                                                                                                                                                                               
                                                                                                                                                                                               
SyntaxError: Unexpected end of JSON input                                                                                                                                                      
    at JSON.parse (<anonymous>)                                                                                                                                                                
    at handleTestOutput (/home/travis/prg/dapp/libexec/dapp/dapp-quicktest:172:23)                                                                                                             
    at Socket.child.stdout.on (/home/travis/prg/dapp/libexec/dapp/dapp-quicktest:163:32)                                                                                                       
    at emitNone (events.js:110:20)                                                                                                                                                             
    at Socket.emit (events.js:207:7)                                                                                                                                                           
    at endReadableNT (_stream_readable.js:1059:12)                                                                                                                                             
    at _combinedTickCallback (internal/process/next_tick.js:138:11)                                                                                                                            
    at process._tickCallback (internal/process/next_tick.js:180:9)                                                                                                                             
thread 'main' panicked at 'failed printing to stdout: Broken pipe (os error 32)', /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libstd/io/stdio.rs:693                     
note: Run with `RUST_BACKTRACE=1` for a backtrace.                                                                                                                                             
thread 'main' panicked at 'failed printing to stdout: Broken pipe (os error 32)', /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libstd/io/stdio.rs:693                     
note: Run with `RUST_BACKTRACE=1` for a backtrace.                                                                                                                                             
thread 'main' panicked at 'failed printing to stdout: Broken pipe (os error 32)', /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libstd/io/stdio.rs:693                     
note: Run with `RUST_BACKTRACE=1` for a backtrace.                                                                                                                                             
thread 'main' panicked at 'failed printing to stdout: Broken pipe (os error 32)', /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libstd/io/stdio.rs:693                     
note: Run with `RUST_BACKTRACE=1` for a backtrace.                                                                                                                                             
thread 'main' panicked at 'failed printing to stdout: Broken pipe (os error 32)', /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libstd/io/stdio.rs:693                     
note: Run with `RUST_BACKTRACE=1` for a backtrace.    

Not sure what this stack trace means exactly, but the Err value: Invalid character '_' at position 47616' makes me wonder whether it's due to some unlinked library (__libnameEtc__ still in the bytecode).

Just a guess though.

[travs]

Resolved via this; update to dapp 0.5.8 to get the patch