Dec 04 09:05:51.350 INFO checking synthkaf/ping-rs against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 09:05:51.350 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 09:05:51.893 INFO [stdout] 7c735151a836a1307897ed3b84902f70279d5f190ff229dc0c5488a8544127fb
Dec 04 09:05:51.895 INFO running `"docker" "start" "-a" "7c735151a836a1307897ed3b84902f70279d5f190ff229dc0c5488a8544127fb"`
Dec 04 09:05:54.943 INFO [stderr] usermod: no changes
Dec 04 09:05:55.083 INFO [stderr]    Compiling rustc-serialize v0.3.24
Dec 04 09:05:55.083 INFO [stderr]    Compiling ucd-util v0.1.2
Dec 04 09:05:55.083 INFO [stderr]    Compiling lazy_static v1.2.0
Dec 04 09:05:55.091 INFO [stderr]    Compiling bitflags v0.5.0
Dec 04 09:05:55.091 INFO [stderr]    Compiling utf8-ranges v1.0.2
Dec 04 09:05:55.091 INFO [stderr]     Checking pnet_base v0.21.0
Dec 04 09:05:55.091 INFO [stderr]     Checking ipnetwork v0.12.8
Dec 04 09:05:55.091 INFO [stderr]    Compiling pnet v0.21.0
Dec 04 09:05:56.251 INFO [stderr]     Checking pnet_sys v0.21.0
Dec 04 09:05:56.434 INFO [stderr]    Compiling thread_local v0.3.6
Dec 04 09:05:57.040 INFO [stderr]    Compiling memchr v2.1.1
Dec 04 09:05:57.592 INFO [stderr]     Checking pnet_macros_support v0.21.0
Dec 04 09:05:59.224 INFO [stderr]     Checking pnet_datalink v0.21.0
Dec 04 09:05:59.296 INFO [stderr]    Compiling regex-syntax v0.5.6
Dec 04 09:06:02.669 INFO [stderr]    Compiling aho-corasick v0.6.9
Dec 04 09:06:12.565 INFO [stderr]    Compiling syntex_pos v0.42.0
Dec 04 09:06:16.531 INFO [stderr]    Compiling syntex_errors v0.42.0
Dec 04 09:06:18.509 INFO [stderr]    Compiling regex v0.2.11
Dec 04 09:06:22.259 INFO [stderr]    Compiling syntex_syntax v0.42.0
Dec 04 09:07:07.452 INFO [stderr]    Compiling syntex v0.42.2
Dec 04 09:07:08.542 INFO [stderr]    Compiling pnet_macros v0.21.0
Dec 04 09:07:11.685 INFO [stderr]    Compiling pnet_packet v0.21.0
Dec 04 09:07:23.601 INFO [stderr]     Checking pnet_transport v0.21.0
Dec 04 09:07:24.291 INFO [stderr]     Checking ping-rs v0.1.0 (/source)
Dec 04 09:07:24.807 INFO [stderr] warning: unused import: `IcmpPacket`
Dec 04 09:07:24.807 INFO [stderr]  --> src/pinger.rs:8:45
Dec 04 09:07:24.807 INFO [stderr]   |
Dec 04 09:07:24.807 INFO [stderr] 8 | use pnet::packet::icmp::{MutableIcmpPacket, IcmpPacket, IcmpCode, IcmpType};
Dec 04 09:07:24.807 INFO [stderr]   |                                             ^^^^^^^^^^
Dec 04 09:07:24.807 INFO [stderr]   |
Dec 04 09:07:24.807 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 09:07:24.807 INFO [stderr] 
Dec 04 09:07:24.807 INFO [stderr] warning: unused import: `cli::Args`
Dec 04 09:07:24.807 INFO [stderr]  --> src/main.rs:7:5
Dec 04 09:07:24.807 INFO [stderr]   |
Dec 04 09:07:24.807 INFO [stderr] 7 | use cli::Args;
Dec 04 09:07:24.807 INFO [stderr]   |     ^^^^^^^^^
Dec 04 09:07:24.807 INFO [stderr] 
Dec 04 09:07:24.903 INFO [stderr] warning: unused variable: `iter`
Dec 04 09:07:24.903 INFO [stderr]   --> src/pinger.rs:51:17
Dec 04 09:07:24.903 INFO [stderr]    |
Dec 04 09:07:24.903 INFO [stderr] 51 |         let mut iter =  icmp_packet_iter(&mut rx);
Dec 04 09:07:24.903 INFO [stderr]    |                 ^^^^ help: consider using `_iter` instead
Dec 04 09:07:24.903 INFO [stderr]    |
Dec 04 09:07:24.903 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 09:07:24.903 INFO [stderr] 
Dec 04 09:07:24.911 INFO [stderr] warning: unused import: `IcmpPacket`
Dec 04 09:07:24.911 INFO [stderr]  --> src/pinger.rs:8:45
Dec 04 09:07:24.911 INFO [stderr]   |
Dec 04 09:07:24.911 INFO [stderr] 8 | use pnet::packet::icmp::{MutableIcmpPacket, IcmpPacket, IcmpCode, IcmpType};
Dec 04 09:07:24.911 INFO [stderr]   |                                             ^^^^^^^^^^
Dec 04 09:07:24.911 INFO [stderr]   |
Dec 04 09:07:24.911 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 09:07:24.911 INFO [stderr] 
Dec 04 09:07:24.911 INFO [stderr] warning: unused import: `cli::Args`
Dec 04 09:07:24.911 INFO [stderr]  --> src/main.rs:7:5
Dec 04 09:07:24.911 INFO [stderr]   |
Dec 04 09:07:24.911 INFO [stderr] 7 | use cli::Args;
Dec 04 09:07:24.911 INFO [stderr]   |     ^^^^^^^^^
Dec 04 09:07:24.911 INFO [stderr] 
Dec 04 09:07:24.931 INFO [stderr] warning: variable does not need to be mutable
Dec 04 09:07:24.931 INFO [stderr]   --> src/pinger.rs:51:13
Dec 04 09:07:24.931 INFO [stderr]    |
Dec 04 09:07:24.931 INFO [stderr] 51 |         let mut iter =  icmp_packet_iter(&mut rx);
Dec 04 09:07:24.931 INFO [stderr]    |             ----^^^^
Dec 04 09:07:24.931 INFO [stderr]    |             |
Dec 04 09:07:24.931 INFO [stderr]    |             help: remove this `mut`
Dec 04 09:07:24.931 INFO [stderr]    |
Dec 04 09:07:24.931 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 09:07:24.931 INFO [stderr] 
Dec 04 09:07:24.931 INFO [stderr] warning: function is never used: `validate_count`
Dec 04 09:07:24.931 INFO [stderr]  --> src/cli.rs:7:1
Dec 04 09:07:24.931 INFO [stderr]   |
Dec 04 09:07:24.931 INFO [stderr] 7 | fn validate_count(s: String) -> Result<(), String> {
Dec 04 09:07:24.931 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:24.931 INFO [stderr]   |
Dec 04 09:07:24.931 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 09:07:24.931 INFO [stderr] 
Dec 04 09:07:24.931 INFO [stderr] warning: function is never used: `build_arg_parser`
Dec 04 09:07:24.931 INFO [stderr]   --> src/cli.rs:17:1
Dec 04 09:07:24.931 INFO [stderr]    |
Dec 04 09:07:24.931 INFO [stderr] 17 | fn build_arg_parser() -> App<'static, 'static> {
Dec 04 09:07:24.931 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:24.931 INFO [stderr] 
Dec 04 09:07:24.931 INFO [stderr] warning: struct is never constructed: `Args`
Dec 04 09:07:24.931 INFO [stderr]   --> src/cli.rs:38:1
Dec 04 09:07:24.931 INFO [stderr]    |
Dec 04 09:07:24.931 INFO [stderr] 38 | pub struct Args {
Dec 04 09:07:24.931 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 04 09:07:24.931 INFO [stderr] 
Dec 04 09:07:24.931 INFO [stderr] warning: function is never used: `resolve_host`
Dec 04 09:07:24.931 INFO [stderr]   --> src/cli.rs:44:1
Dec 04 09:07:24.931 INFO [stderr]    |
Dec 04 09:07:24.931 INFO [stderr] 44 | fn resolve_host(host: &str) -> Option<IpAddr> {
Dec 04 09:07:24.931 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:24.931 INFO [stderr] 
Dec 04 09:07:24.931 INFO [stderr] warning: method is never used: `from`
Dec 04 09:07:24.931 INFO [stderr]   --> src/cli.rs:57:5
Dec 04 09:07:24.931 INFO [stderr]    |
Dec 04 09:07:24.931 INFO [stderr] 57 |     fn from<'a, I: IntoIterator<Item = String> + 'a>(args: I) -> Result<Args, String> {
Dec 04 09:07:24.931 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:24.931 INFO [stderr] 
Dec 04 09:07:24.931 INFO [stderr] warning: method is never used: `from_cmdline`
Dec 04 09:07:24.931 INFO [stderr]   --> src/cli.rs:83:5
Dec 04 09:07:24.931 INFO [stderr]    |
Dec 04 09:07:24.931 INFO [stderr] 83 |     pub fn from_cmdline() -> Result<Args, String> {
Dec 04 09:07:24.931 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:24.931 INFO [stderr] 
Dec 04 09:07:24.931 INFO [stderr] warning: field is never used: `packets_received`
Dec 04 09:07:24.931 INFO [stderr]   --> src/pinger.rs:17:5
Dec 04 09:07:24.931 INFO [stderr]    |
Dec 04 09:07:24.931 INFO [stderr] 17 |     packets_received: u32,
Dec 04 09:07:24.931 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:24.931 INFO [stderr] 
Dec 04 09:07:24.931 INFO [stderr] warning: field is never used: `rtts`
Dec 04 09:07:24.931 INFO [stderr]   --> src/pinger.rs:18:5
Dec 04 09:07:24.931 INFO [stderr]    |
Dec 04 09:07:24.931 INFO [stderr] 18 |     rtts: Vec<time::Duration>
Dec 04 09:07:24.931 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:24.932 INFO [stderr] 
Dec 04 09:07:25.011 INFO [stderr] warning: unused variable: `iter`
Dec 04 09:07:25.011 INFO [stderr]   --> src/pinger.rs:51:17
Dec 04 09:07:25.011 INFO [stderr]    |
Dec 04 09:07:25.011 INFO [stderr] 51 |         let mut iter =  icmp_packet_iter(&mut rx);
Dec 04 09:07:25.011 INFO [stderr]    |                 ^^^^ help: consider using `_iter` instead
Dec 04 09:07:25.011 INFO [stderr]    |
Dec 04 09:07:25.011 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 09:07:25.011 INFO [stderr] 
Dec 04 09:07:25.047 INFO [stderr] warning: variable does not need to be mutable
Dec 04 09:07:25.047 INFO [stderr]   --> src/pinger.rs:51:13
Dec 04 09:07:25.047 INFO [stderr]    |
Dec 04 09:07:25.047 INFO [stderr] 51 |         let mut iter =  icmp_packet_iter(&mut rx);
Dec 04 09:07:25.047 INFO [stderr]    |             ----^^^^
Dec 04 09:07:25.047 INFO [stderr]    |             |
Dec 04 09:07:25.047 INFO [stderr]    |             help: remove this `mut`
Dec 04 09:07:25.047 INFO [stderr]    |
Dec 04 09:07:25.047 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 09:07:25.047 INFO [stderr] 
Dec 04 09:07:25.047 INFO [stderr] warning: function is never used: `validate_count`
Dec 04 09:07:25.047 INFO [stderr]  --> src/cli.rs:7:1
Dec 04 09:07:25.047 INFO [stderr]   |
Dec 04 09:07:25.047 INFO [stderr] 7 | fn validate_count(s: String) -> Result<(), String> {
Dec 04 09:07:25.047 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:25.047 INFO [stderr]   |
Dec 04 09:07:25.047 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 09:07:25.047 INFO [stderr] 
Dec 04 09:07:25.051 INFO [stderr] warning: function is never used: `build_arg_parser`
Dec 04 09:07:25.051 INFO [stderr]   --> src/cli.rs:17:1
Dec 04 09:07:25.051 INFO [stderr]    |
Dec 04 09:07:25.051 INFO [stderr] 17 | fn build_arg_parser() -> App<'static, 'static> {
Dec 04 09:07:25.051 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:25.051 INFO [stderr] 
Dec 04 09:07:25.051 INFO [stderr] warning: struct is never constructed: `Args`
Dec 04 09:07:25.051 INFO [stderr]   --> src/cli.rs:38:1
Dec 04 09:07:25.051 INFO [stderr]    |
Dec 04 09:07:25.051 INFO [stderr] 38 | pub struct Args {
Dec 04 09:07:25.051 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 04 09:07:25.051 INFO [stderr] 
Dec 04 09:07:25.051 INFO [stderr] warning: function is never used: `resolve_host`
Dec 04 09:07:25.051 INFO [stderr]   --> src/cli.rs:44:1
Dec 04 09:07:25.051 INFO [stderr]    |
Dec 04 09:07:25.051 INFO [stderr] 44 | fn resolve_host(host: &str) -> Option<IpAddr> {
Dec 04 09:07:25.051 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:25.051 INFO [stderr] 
Dec 04 09:07:25.051 INFO [stderr] warning: method is never used: `from`
Dec 04 09:07:25.051 INFO [stderr]   --> src/cli.rs:57:5
Dec 04 09:07:25.051 INFO [stderr]    |
Dec 04 09:07:25.051 INFO [stderr] 57 |     fn from<'a, I: IntoIterator<Item = String> + 'a>(args: I) -> Result<Args, String> {
Dec 04 09:07:25.051 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:25.051 INFO [stderr] 
Dec 04 09:07:25.051 INFO [stderr] warning: method is never used: `from_cmdline`
Dec 04 09:07:25.051 INFO [stderr]   --> src/cli.rs:83:5
Dec 04 09:07:25.051 INFO [stderr]    |
Dec 04 09:07:25.051 INFO [stderr] 83 |     pub fn from_cmdline() -> Result<Args, String> {
Dec 04 09:07:25.051 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:25.051 INFO [stderr] 
Dec 04 09:07:25.051 INFO [stderr] warning: field is never used: `packets_received`
Dec 04 09:07:25.051 INFO [stderr]   --> src/pinger.rs:17:5
Dec 04 09:07:25.051 INFO [stderr]    |
Dec 04 09:07:25.051 INFO [stderr] 17 |     packets_received: u32,
Dec 04 09:07:25.051 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:25.051 INFO [stderr] 
Dec 04 09:07:25.051 INFO [stderr] warning: field is never used: `rtts`
Dec 04 09:07:25.051 INFO [stderr]   --> src/pinger.rs:18:5
Dec 04 09:07:25.051 INFO [stderr]    |
Dec 04 09:07:25.051 INFO [stderr] 18 |     rtts: Vec<time::Duration>
Dec 04 09:07:25.051 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:25.051 INFO [stderr] 
Dec 04 09:07:25.077 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 30s
Dec 04 09:07:25.099 INFO [stderr] su: No module specific data is present
Dec 04 09:07:25.954 INFO running `"docker" "inspect" "7c735151a836a1307897ed3b84902f70279d5f190ff229dc0c5488a8544127fb"`
Dec 04 09:07:26.289 INFO running `"docker" "rm" "-f" "7c735151a836a1307897ed3b84902f70279d5f190ff229dc0c5488a8544127fb"`
Dec 04 09:07:26.659 INFO [stdout] 7c735151a836a1307897ed3b84902f70279d5f190ff229dc0c5488a8544127fb