"Bad line" error on an Android simpleperf trace

Came across this trying to convert an android `simpleperf` trace to pprof:

I'll note the full repo steps here in case they're useful; they probably aren't though; the error message is probably sufficient:

```
$ git clone https://android.googlesource.com/platform/system/extras
$ cd extras/simpleperf/scripts
$ ./app_profiler.py -p com.google.android.apps.maps -r "-f 4000 -g -e cpu-clock --trace-offcpu --duration 60" --activity com.google.android.maps.MapsActivity --skip_collect_binaries
$ ./report_sample.py ~/simpleperf/perf.data | ~/FlameGraph/stackcollapse-perf.pl | ~/go/bin/text2pprof
```

Gives this error:

```
bad line: 6: "Binder:23281_1;__start_thread;__pthread_start;thread_data_t::trampoline;android::AndroidRuntime::javaThreadShell;android::Thread::_threadLoop;android::PoolThread::threadLoop;android::IPCThreadState::joinThreadPool;android::IPCThreadState::executeCommand;android::BBinder::transact;JavaBBinder::onTransact;_JNIEnv::CallBooleanMethod;art::JNI::CallBooleanMethodV;art::JValue art::InvokeVirtualOrInterfaceWithVarArgs 6"
```

This happens on line 6... let's look at the first 10 lines:

```
./report_sample.py ~/simpleperf/perf.data | ~/FlameGraph/stackcollapse-perf.pl | head
Binder:23281_1;__start_thread;__pthread_start;thread_data_t::trampoline;android::AndroidRuntime::javaThreadShell;android::Thread::_threadLoop;android::PoolThread::threadLoop;android::IPCThreadState::joinThreadPool 11
Binder:23281_1;__start_thread;__pthread_start;thread_data_t::trampoline;android::AndroidRuntime::javaThreadShell;android::Thread::_threadLoop;android::PoolThread::threadLoop;android::IPCThreadState::joinThreadPool;@plt 6
Binder:23281_1;__start_thread;__pthread_start;thread_data_t::trampoline;android::AndroidRuntime::javaThreadShell;android::Thread::_threadLoop;android::PoolThread::threadLoop;android::IPCThreadState::joinThreadPool;@plt;work_pending;do_notify_resume;__schedule;__schedule 3
Binder:23281_1;__start_thread;__pthread_start;thread_data_t::trampoline;android::AndroidRuntime::javaThreadShell;android::Thread::_threadLoop;android::PoolThread::threadLoop;android::IPCThreadState::joinThreadPool;android::IPCThreadState::executeCommand 10
Binder:23281_1;__start_thread;__pthread_start;thread_data_t::trampoline;android::AndroidRuntime::javaThreadShell;android::Thread::_threadLoop;android::PoolThread::threadLoop;android::IPCThreadState::joinThreadPool;android::IPCThreadState::executeCommand;android::BBinder::transact 1
Binder:23281_1;__start_thread;__pthread_start;thread_data_t::trampoline;android::AndroidRuntime::javaThreadShell;android::Thread::_threadLoop;android::PoolThread::threadLoop;android::IPCThreadState::joinThreadPool;android::IPCThreadState::executeCommand;android::BBinder::transact;JavaBBinder::onTransact;_JNIEnv::CallBooleanMethod;art::JNI::CallBooleanMethodV 2
Binder:23281_1;__start_thread;__pthread_start;thread_data_t::trampoline;android::AndroidRuntime::javaThreadShell;android::Thread::_threadLoop;android::PoolThread::threadLoop;android::IPCThreadState::joinThreadPool;android::IPCThreadState::executeCommand;android::BBinder::transact;JavaBBinder::onTransact;_JNIEnv::CallBooleanMethod;art::JNI::CallBooleanMethodV;art::JValue art::InvokeVirtualOrInterfaceWithVarArgs 6
Binder:23281_1;__start_thread;__pthread_start;thread_data_t::trampoline;android::AndroidRuntime::javaThreadShell;android::Thread::_threadLoop;android::PoolThread::threadLoop;android::IPCThreadState::joinThreadPool;android::IPCThreadState::executeCommand;android::BBinder::transact;JavaBBinder::onTransact;_JNIEnv::CallBooleanMethod;art::JNI::CallBooleanMethodV;art::JValue art::InvokeVirtualOrInterfaceWithVarArgs;art_quick_invoke_stub;android.os.Binder.execTransact 2
Binder:23281_1;__start_thread;__pthread_start;thread_data_t::trampoline;android::AndroidRuntime::javaThreadShell;android::Thread::_threadLoop;android::PoolThread::threadLoop;android::IPCThreadState::joinThreadPool;android::IPCThreadState::executeCommand;android::BBinder::transact;JavaBBinder::onTransact;_JNIEnv::CallBooleanMethod;art::JNI::CallBooleanMethodV;art::JValue art::InvokeVirtualOrInterfaceWithVarArgs;art_quick_invoke_stub;android.os.Binder.execTransact;android.os.Binder.execTransactInternal 2
Binder:23281_1;__start_thread;__pthread_start;thread_data_t::trampoline;android::AndroidRuntime::javaThreadShell;android::Thread::_threadLoop;android::PoolThread::threadLoop;android::IPCThreadState::joinThreadPool;android::IPCThreadState::executeCommand;android::BBinder::transact;JavaBBinder::onTransact;_JNIEnv::CallBooleanMethod;art::JNI::CallBooleanMethodV;art::JValue art::InvokeVirtualOrInterfaceWithVarArgs;art_quick_invoke_stub;android.os.Binder.execTransact;android.os.Binder.execTransactInternal;ExecuteNterpImpl 1
```

At a guess, I'd say the problem is probably the space in between `JValue art`.

It's very possible that I'm holding this wrong and there shouldn't be spaces in these lines according to the format? However perhaps there is a way to 'greedily' consume forward till we get to the numbers, perhaps?