Dec 04 09:05:41.744 INFO checking synthkaf/ping-rs against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 09:05:41.744 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 09:05:42.267 INFO [stdout] cdb849d1f958ed121365238ef8a7a82070f94471fb31a24eeda3774102b109f4
Dec 04 09:05:42.273 INFO running `"docker" "start" "-a" "cdb849d1f958ed121365238ef8a7a82070f94471fb31a24eeda3774102b109f4"`
Dec 04 09:05:44.494 INFO [stderr] usermod: no changes
Dec 04 09:05:44.709 INFO [stderr]    Compiling rustc-serialize v0.3.24
Dec 04 09:05:44.709 INFO [stderr]    Compiling term v0.4.6
Dec 04 09:05:44.711 INFO [stderr]    Compiling unicode-xid v0.0.3
Dec 04 09:05:44.727 INFO [stderr]    Compiling bitflags v0.5.0
Dec 04 09:05:44.731 INFO [stderr]    Compiling lazy_static v1.2.0
Dec 04 09:05:44.743 INFO [stderr]    Compiling ucd-util v0.1.2
Dec 04 09:05:44.743 INFO [stderr]    Compiling utf8-ranges v1.0.2
Dec 04 09:05:44.767 INFO [stderr]     Checking pnet_base v0.21.0
Dec 04 09:05:45.911 INFO [stderr]     Checking ipnetwork v0.12.8
Dec 04 09:05:45.998 INFO [stderr]    Compiling pnet v0.21.0
Dec 04 09:05:46.687 INFO [stderr]    Compiling log v0.4.6
Dec 04 09:05:46.784 INFO [stderr]     Checking pnet_sys v0.21.0
Dec 04 09:05:48.967 INFO [stderr]    Compiling thread_local v0.3.6
Dec 04 09:05:48.967 INFO [stderr]     Checking pnet_macros_support v0.21.0
Dec 04 09:05:49.185 INFO [stderr]    Compiling memchr v2.1.1
Dec 04 09:05:49.283 INFO [stderr]    Compiling regex-syntax v0.5.6
Dec 04 09:05:49.531 INFO [stderr]     Checking pnet_datalink v0.21.0
Dec 04 09:05:56.056 INFO [stderr]    Compiling log v0.3.9
Dec 04 09:05:56.171 INFO [stderr]    Compiling aho-corasick v0.6.9
Dec 04 09:06:05.009 INFO [stderr]    Compiling syntex_pos v0.42.0
Dec 04 09:06:08.348 INFO [stderr]    Compiling syntex_errors v0.42.0
Dec 04 09:06:13.083 INFO [stderr]    Compiling regex v0.2.11
Dec 04 09:06:16.173 INFO [stderr]    Compiling syntex_syntax v0.42.0
Dec 04 09:07:02.931 INFO [stderr]    Compiling syntex v0.42.2
Dec 04 09:07:03.947 INFO [stderr]    Compiling pnet_macros v0.21.0
Dec 04 09:07:06.425 INFO [stderr]    Compiling pnet_packet v0.21.0
Dec 04 09:07:18.408 INFO [stderr]     Checking pnet_transport v0.21.0
Dec 04 09:07:19.133 INFO [stderr]     Checking ping-rs v0.1.0 (/source)
Dec 04 09:07:19.852 INFO [stderr] warning: unused import: `IcmpPacket`
Dec 04 09:07:19.852 INFO [stderr]  --> src/pinger.rs:8:45
Dec 04 09:07:19.852 INFO [stderr]   |
Dec 04 09:07:19.853 INFO [stderr] 8 | use pnet::packet::icmp::{MutableIcmpPacket, IcmpPacket, IcmpCode, IcmpType};
Dec 04 09:07:19.853 INFO [stderr]   |                                             ^^^^^^^^^^
Dec 04 09:07:19.853 INFO [stderr]   |
Dec 04 09:07:19.854 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 09:07:19.854 INFO [stderr] 
Dec 04 09:07:19.855 INFO [stderr] warning: unused import: `cli::Args`
Dec 04 09:07:19.855 INFO [stderr]  --> src/main.rs:7:5
Dec 04 09:07:19.855 INFO [stderr]   |
Dec 04 09:07:19.855 INFO [stderr] 7 | use cli::Args;
Dec 04 09:07:19.856 INFO [stderr]   |     ^^^^^^^^^
Dec 04 09:07:19.856 INFO [stderr] 
Dec 04 09:07:19.923 INFO [stderr] warning: unused import: `IcmpPacket`
Dec 04 09:07:19.923 INFO [stderr]  --> src/pinger.rs:8:45
Dec 04 09:07:19.924 INFO [stderr]   |
Dec 04 09:07:19.924 INFO [stderr] 8 | use pnet::packet::icmp::{MutableIcmpPacket, IcmpPacket, IcmpCode, IcmpType};
Dec 04 09:07:19.925 INFO [stderr]   |                                             ^^^^^^^^^^
Dec 04 09:07:19.925 INFO [stderr]   |
Dec 04 09:07:19.925 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 09:07:19.925 INFO [stderr] 
Dec 04 09:07:19.926 INFO [stderr] warning: unused import: `cli::Args`
Dec 04 09:07:19.926 INFO [stderr]  --> src/main.rs:7:5
Dec 04 09:07:19.926 INFO [stderr]   |
Dec 04 09:07:19.927 INFO [stderr] 7 | use cli::Args;
Dec 04 09:07:19.927 INFO [stderr]   |     ^^^^^^^^^
Dec 04 09:07:19.927 INFO [stderr] 
Dec 04 09:07:20.017 INFO [stderr] warning: unused variable: `iter`
Dec 04 09:07:20.017 INFO [stderr]   --> src/pinger.rs:51:17
Dec 04 09:07:20.018 INFO [stderr]    |
Dec 04 09:07:20.018 INFO [stderr] 51 |         let mut iter =  icmp_packet_iter(&mut rx);
Dec 04 09:07:20.018 INFO [stderr]    |                 ^^^^ help: consider using `_iter` instead
Dec 04 09:07:20.019 INFO [stderr]    |
Dec 04 09:07:20.019 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 09:07:20.019 INFO [stderr] 
Dec 04 09:07:20.019 INFO [stderr] warning: unused variable: `iter`
Dec 04 09:07:20.020 INFO [stderr]   --> src/pinger.rs:51:17
Dec 04 09:07:20.020 INFO [stderr]    |
Dec 04 09:07:20.020 INFO [stderr] 51 |         let mut iter =  icmp_packet_iter(&mut rx);
Dec 04 09:07:20.021 INFO [stderr]    |                 ^^^^ help: consider using `_iter` instead
Dec 04 09:07:20.021 INFO [stderr]    |
Dec 04 09:07:20.021 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 09:07:20.021 INFO [stderr] 
Dec 04 09:07:20.064 INFO [stderr] warning: variable does not need to be mutable
Dec 04 09:07:20.064 INFO [stderr]   --> src/pinger.rs:51:13
Dec 04 09:07:20.064 INFO [stderr]    |
Dec 04 09:07:20.064 INFO [stderr] 51 |         let mut iter =  icmp_packet_iter(&mut rx);
Dec 04 09:07:20.064 INFO [stderr]    |             ----^^^^
Dec 04 09:07:20.064 INFO [stderr]    |             |
Dec 04 09:07:20.064 INFO [stderr]    |             help: remove this `mut`
Dec 04 09:07:20.064 INFO [stderr]    |
Dec 04 09:07:20.064 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 09:07:20.064 INFO [stderr] 
Dec 04 09:07:20.064 INFO [stderr] warning: function is never used: `validate_count`
Dec 04 09:07:20.064 INFO [stderr]  --> src/cli.rs:7:1
Dec 04 09:07:20.065 INFO [stderr]   |
Dec 04 09:07:20.065 INFO [stderr] 7 | fn validate_count(s: String) -> Result<(), String> {
Dec 04 09:07:20.065 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:20.065 INFO [stderr]   |
Dec 04 09:07:20.065 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 09:07:20.065 INFO [stderr] 
Dec 04 09:07:20.065 INFO [stderr] warning: function is never used: `build_arg_parser`
Dec 04 09:07:20.065 INFO [stderr]   --> src/cli.rs:17:1
Dec 04 09:07:20.065 INFO [stderr]    |
Dec 04 09:07:20.065 INFO [stderr] 17 | fn build_arg_parser() -> App<'static, 'static> {
Dec 04 09:07:20.065 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:20.065 INFO [stderr] 
Dec 04 09:07:20.065 INFO [stderr] warning: struct is never constructed: `Args`
Dec 04 09:07:20.065 INFO [stderr]   --> src/cli.rs:38:1
Dec 04 09:07:20.065 INFO [stderr]    |
Dec 04 09:07:20.065 INFO [stderr] 38 | pub struct Args {
Dec 04 09:07:20.065 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 04 09:07:20.065 INFO [stderr] 
Dec 04 09:07:20.065 INFO [stderr] warning: function is never used: `resolve_host`
Dec 04 09:07:20.065 INFO [stderr]   --> src/cli.rs:44:1
Dec 04 09:07:20.065 INFO [stderr]    |
Dec 04 09:07:20.065 INFO [stderr] 44 | fn resolve_host(host: &str) -> Option<IpAddr> {
Dec 04 09:07:20.065 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:20.065 INFO [stderr] 
Dec 04 09:07:20.065 INFO [stderr] warning: method is never used: `from`
Dec 04 09:07:20.065 INFO [stderr]   --> src/cli.rs:57:5
Dec 04 09:07:20.065 INFO [stderr]    |
Dec 04 09:07:20.065 INFO [stderr] 57 |     fn from<'a, I: IntoIterator<Item = String> + 'a>(args: I) -> Result<Args, String> {
Dec 04 09:07:20.065 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:20.065 INFO [stderr] 
Dec 04 09:07:20.065 INFO [stderr] warning: method is never used: `from_cmdline`
Dec 04 09:07:20.065 INFO [stderr]   --> src/cli.rs:83:5
Dec 04 09:07:20.065 INFO [stderr]    |
Dec 04 09:07:20.065 INFO [stderr] 83 |     pub fn from_cmdline() -> Result<Args, String> {
Dec 04 09:07:20.065 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:20.065 INFO [stderr] 
Dec 04 09:07:20.065 INFO [stderr] warning: field is never used: `packets_received`
Dec 04 09:07:20.065 INFO [stderr]   --> src/pinger.rs:17:5
Dec 04 09:07:20.065 INFO [stderr]    |
Dec 04 09:07:20.065 INFO [stderr] 17 |     packets_received: u32,
Dec 04 09:07:20.065 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:20.065 INFO [stderr] 
Dec 04 09:07:20.065 INFO [stderr] warning: field is never used: `rtts`
Dec 04 09:07:20.065 INFO [stderr]   --> src/pinger.rs:18:5
Dec 04 09:07:20.065 INFO [stderr]    |
Dec 04 09:07:20.065 INFO [stderr] 18 |     rtts: Vec<time::Duration>
Dec 04 09:07:20.065 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:20.065 INFO [stderr] 
Dec 04 09:07:20.076 INFO [stderr] warning: variable does not need to be mutable
Dec 04 09:07:20.076 INFO [stderr]   --> src/pinger.rs:51:13
Dec 04 09:07:20.077 INFO [stderr]    |
Dec 04 09:07:20.077 INFO [stderr] 51 |         let mut iter =  icmp_packet_iter(&mut rx);
Dec 04 09:07:20.077 INFO [stderr]    |             ----^^^^
Dec 04 09:07:20.077 INFO [stderr]    |             |
Dec 04 09:07:20.077 INFO [stderr]    |             help: remove this `mut`
Dec 04 09:07:20.077 INFO [stderr]    |
Dec 04 09:07:20.077 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 09:07:20.077 INFO [stderr] 
Dec 04 09:07:20.077 INFO [stderr] warning: function is never used: `validate_count`
Dec 04 09:07:20.077 INFO [stderr]  --> src/cli.rs:7:1
Dec 04 09:07:20.077 INFO [stderr]   |
Dec 04 09:07:20.077 INFO [stderr] 7 | fn validate_count(s: String) -> Result<(), String> {
Dec 04 09:07:20.077 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:20.077 INFO [stderr]   |
Dec 04 09:07:20.077 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 09:07:20.077 INFO [stderr] 
Dec 04 09:07:20.077 INFO [stderr] warning: function is never used: `build_arg_parser`
Dec 04 09:07:20.077 INFO [stderr]   --> src/cli.rs:17:1
Dec 04 09:07:20.077 INFO [stderr]    |
Dec 04 09:07:20.077 INFO [stderr] 17 | fn build_arg_parser() -> App<'static, 'static> {
Dec 04 09:07:20.077 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:20.077 INFO [stderr] 
Dec 04 09:07:20.077 INFO [stderr] warning: struct is never constructed: `Args`
Dec 04 09:07:20.077 INFO [stderr]   --> src/cli.rs:38:1
Dec 04 09:07:20.077 INFO [stderr]    |
Dec 04 09:07:20.077 INFO [stderr] 38 | pub struct Args {
Dec 04 09:07:20.077 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 04 09:07:20.077 INFO [stderr] 
Dec 04 09:07:20.077 INFO [stderr] warning: function is never used: `resolve_host`
Dec 04 09:07:20.077 INFO [stderr]   --> src/cli.rs:44:1
Dec 04 09:07:20.077 INFO [stderr]    |
Dec 04 09:07:20.077 INFO [stderr] 44 | fn resolve_host(host: &str) -> Option<IpAddr> {
Dec 04 09:07:20.077 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:20.077 INFO [stderr] 
Dec 04 09:07:20.077 INFO [stderr] warning: method is never used: `from`
Dec 04 09:07:20.077 INFO [stderr]   --> src/cli.rs:57:5
Dec 04 09:07:20.077 INFO [stderr]    |
Dec 04 09:07:20.077 INFO [stderr] 57 |     fn from<'a, I: IntoIterator<Item = String> + 'a>(args: I) -> Result<Args, String> {
Dec 04 09:07:20.077 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:20.077 INFO [stderr] 
Dec 04 09:07:20.077 INFO [stderr] warning: method is never used: `from_cmdline`
Dec 04 09:07:20.077 INFO [stderr]   --> src/cli.rs:83:5
Dec 04 09:07:20.077 INFO [stderr]    |
Dec 04 09:07:20.077 INFO [stderr] 83 |     pub fn from_cmdline() -> Result<Args, String> {
Dec 04 09:07:20.077 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:20.077 INFO [stderr] 
Dec 04 09:07:20.077 INFO [stderr] warning: field is never used: `packets_received`
Dec 04 09:07:20.077 INFO [stderr]   --> src/pinger.rs:17:5
Dec 04 09:07:20.077 INFO [stderr]    |
Dec 04 09:07:20.077 INFO [stderr] 17 |     packets_received: u32,
Dec 04 09:07:20.077 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:20.077 INFO [stderr] 
Dec 04 09:07:20.077 INFO [stderr] warning: field is never used: `rtts`
Dec 04 09:07:20.077 INFO [stderr]   --> src/pinger.rs:18:5
Dec 04 09:07:20.077 INFO [stderr]    |
Dec 04 09:07:20.077 INFO [stderr] 18 |     rtts: Vec<time::Duration>
Dec 04 09:07:20.077 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 09:07:20.077 INFO [stderr] 
Dec 04 09:07:20.118 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 35s
Dec 04 09:07:20.124 INFO [stderr] su: No module specific data is present
Dec 04 09:07:22.192 INFO running `"docker" "inspect" "cdb849d1f958ed121365238ef8a7a82070f94471fb31a24eeda3774102b109f4"`
Dec 04 09:07:22.495 INFO running `"docker" "rm" "-f" "cdb849d1f958ed121365238ef8a7a82070f94471fb31a24eeda3774102b109f4"`
Dec 04 09:07:22.891 INFO [stdout] cdb849d1f958ed121365238ef8a7a82070f94471fb31a24eeda3774102b109f4