fix examples

Author: brayniac

examples/biosnoop.rs

@@ -1,7 +1,7 @@
 use bcc::core::BPF;
 use bcc::perf::init_perf_map;
+use bcc::BccError;
 use clap::{App, Arg};
-use failure::Error;
 
 use core::sync::atomic::{AtomicBool, Ordering};
 use std::ptr;
@@ -24,7 +24,7 @@ struct data_t {
     name: [u8; 16],
 }
 
-fn do_main(runnable: Arc<AtomicBool>) -> Result<(), Error> {
+fn do_main(runnable: Arc<AtomicBool>) -> Result<(), BccError> {
     let matches = App::new("biosnoop")
         .about("Trace block I/O")
         .arg(

examples/opensnoop.rs

@@ -5,8 +5,8 @@ extern crate libc;
 
 use bcc::core::BPF;
 use bcc::perf::init_perf_map;
+use bcc::BccError;
 use clap::{App, Arg};
-use failure::Error;
 
 use core::sync::atomic::{AtomicBool, Ordering};
 use std::ptr;
@@ -34,7 +34,7 @@ struct data_t {
     fname: [u8; 255], // NAME_MAX
 }
 
-fn do_main(runnable: Arc<AtomicBool>) -> Result<(), Error> {
+fn do_main(runnable: Arc<AtomicBool>) -> Result<(), BccError> {
     let matches = App::new("opensnoop")
         .about("Prints out filename + PID every time a file is opened")
         .arg(

examples/runqlat.rs

@@ -1,6 +1,6 @@
 use bcc::core::BPF;
+use bcc::BccError;
 use clap::{App, Arg};
-use failure::Error;
 
 use core::sync::atomic::{AtomicBool, Ordering};
 use std::sync::Arc;
@@ -50,7 +50,7 @@ fn attach_events(bpf: &mut BPF) {
     }
 }
 
-fn do_main(runnable: Arc<AtomicBool>) -> Result<(), Error> {
+fn do_main(runnable: Arc<AtomicBool>) -> Result<(), BccError> {
     let matches = App::new("runqlat")
         .about("Reports distribution of scheduler latency")
         .arg(

examples/strlen.rs

@@ -4,14 +4,14 @@ extern crate failure;
 extern crate libc;
 
 use bcc::core::BPF;
+use bcc::BccError;
 use byteorder::{NativeEndian, ReadBytesExt};
-use failure::Error;
 
 use core::sync::atomic::{AtomicBool, Ordering};
 use std::io::Cursor;
 use std::sync::Arc;
 
-fn do_main(runnable: Arc<AtomicBool>) -> Result<(), Error> {
+fn do_main(runnable: Arc<AtomicBool>) -> Result<(), BccError> {
     let code = "
 #include <uapi/linux/ptrace.h>
 

examples/tcpretrans.rs

@@ -1,8 +1,8 @@
+use bcc::BccError;
 use bcc::core::BPF;
 extern crate chrono;
 use chrono::Utc;
 use clap::{App, Arg};
-use failure::Error;
 
 use core::sync::atomic::{AtomicBool, Ordering};
 use std::net::Ipv4Addr;
@@ -38,7 +38,7 @@ struct ipv6_data_t {
     type_: u64,
 }
 
-fn do_main(runnable: Arc<AtomicBool>) -> Result<(), Error> {
+fn do_main(runnable: Arc<AtomicBool>) -> Result<(), BccError> {
     let matches = App::new("biosnoop")
         .arg(
             Arg::with_name("duration")