[INFO] updating cached repository https://github.com/zinsoldat/rna
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 12aa1ece07ff0ea3f6f7f1bee484342a2d2c8db2
[INFO] checking zinsoldat/rna against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzinsoldat%2Frna" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zinsoldat/rna on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/zinsoldat/rna
[INFO] finished tweaking git repo https://github.com/zinsoldat/rna
[INFO] tweaked toml for git repo https://github.com/zinsoldat/rna written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/zinsoldat/rna already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 374ce2edc25407770295b62850d1b8873b2a95f4c1775e6d46c0370a5f115471
[INFO] running `"docker" "start" "-a" "374ce2edc25407770295b62850d1b8873b2a95f4c1775e6d46c0370a5f115471"`
[INFO] [stderr]    Compiling memchr v2.1.3
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]     Checking pnet_base v0.21.0
[INFO] [stderr]    Compiling pnet v0.21.0
[INFO] [stderr]     Checking ipnetwork v0.12.8
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling syntex_pos v0.42.0
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]     Checking pnet_sys v0.21.0
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]     Checking pnet_macros_support v0.21.0
[INFO] [stderr]     Checking pnet_datalink v0.21.0
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling syntex v0.42.2
[INFO] [stderr]    Compiling pnet_macros v0.21.0
[INFO] [stderr]    Compiling pnet_packet v0.21.0
[INFO] [stderr]     Checking pnet_transport v0.21.0
[INFO] [stderr]     Checking rna v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: constant item is never used: `IPV4_HEADER_LENGTH`
[INFO] [stderr]   --> src/network.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | const IPV4_HEADER_LENGTH: u8 = 5;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `traceroute`
[INFO] [stderr]   --> src/network.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub fn traceroute(address: net::Ipv4Addr) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PingResult`
[INFO] [stderr]   --> src/network.rs:57:1
[INFO] [stderr]    |
[INFO] [stderr] 57 | pub struct PingResult {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ping`
[INFO] [stderr]   --> src/network.rs:62:1
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn ping(address: net::Ipv4Addr, ttl: u8) -> io::Result<PingResult> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_icmp_packet`
[INFO] [stderr]    --> src/network.rs:106:1
[INFO] [stderr]     |
[INFO] [stderr] 106 | fn create_icmp_packet(icmp_buffer: & mut [u8]) -> MutableEchoRequestPacket {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_ipv4_packet`
[INFO] [stderr]    --> src/network.rs:124:1
[INFO] [stderr]     |
[INFO] [stderr] 124 | fn create_ipv4_packet<'a>(ip_buffer: &'a mut [u8], address: net::Ipv4Addr, ttl: u8, payload: &'a[u8]) -> MutableIpv4Packet<'a> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `IPV4_HEADER_LENGTH`
[INFO] [stderr]   --> src/network.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | const IPV4_HEADER_LENGTH: u8 = 5;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `traceroute`
[INFO] [stderr]   --> src/network.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub fn traceroute(address: net::Ipv4Addr) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PingResult`
[INFO] [stderr]   --> src/network.rs:57:1
[INFO] [stderr]    |
[INFO] [stderr] 57 | pub struct PingResult {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ping`
[INFO] [stderr]   --> src/network.rs:62:1
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn ping(address: net::Ipv4Addr, ttl: u8) -> io::Result<PingResult> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_icmp_packet`
[INFO] [stderr]    --> src/network.rs:106:1
[INFO] [stderr]     |
[INFO] [stderr] 106 | fn create_icmp_packet(icmp_buffer: & mut [u8]) -> MutableEchoRequestPacket {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_ipv4_packet`
[INFO] [stderr]    --> src/network.rs:124:1
[INFO] [stderr]     |
[INFO] [stderr] 124 | fn create_ipv4_packet<'a>(ip_buffer: &'a mut [u8], address: net::Ipv4Addr, ttl: u8, payload: &'a[u8]) -> MutableIpv4Packet<'a> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 12s
[INFO] running `"docker" "inspect" "374ce2edc25407770295b62850d1b8873b2a95f4c1775e6d46c0370a5f115471"`
[INFO] running `"docker" "rm" "-f" "374ce2edc25407770295b62850d1b8873b2a95f4c1775e6d46c0370a5f115471"`
[INFO] [stdout] 374ce2edc25407770295b62850d1b8873b2a95f4c1775e6d46c0370a5f115471