[INFO] cloning repository https://github.com/caiomcg/sentinel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/caiomcg/sentinel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcaiomcg%2Fsentinel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcaiomcg%2Fsentinel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6dc448ce06f8d59342d5d00fce2e853521740055
[INFO] checking caiomcg/sentinel against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcaiomcg%2Fsentinel" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/caiomcg/sentinel on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/caiomcg/sentinel
[INFO] finished tweaking git repo https://github.com/caiomcg/sentinel
[INFO] tweaked toml for git repo https://github.com/caiomcg/sentinel written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/caiomcg/sentinel already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pnet_macros_support v0.28.0
[INFO] [stderr]   Downloaded pnet v0.28.0
[INFO] [stderr]   Downloaded pnet_transport v0.28.0
[INFO] [stderr]   Downloaded pnet_base v0.28.0
[INFO] [stderr]   Downloaded dns-lookup v1.0.7
[INFO] [stderr]   Downloaded ipnetwork v0.18.0
[INFO] [stderr]   Downloaded pnet_datalink v0.28.0
[INFO] [stderr]   Downloaded pnet_macros v0.28.0
[INFO] [stderr]   Downloaded pnet_packet v0.28.0
[INFO] [stderr]   Downloaded pnet_sys v0.28.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50cddaab87cd51eb90f08e09408fe86addc62515caf1f3bc34300d00dc7920ab
[INFO] running `Command { std: "docker" "start" "-a" "50cddaab87cd51eb90f08e09408fe86addc62515caf1f3bc34300d00dc7920ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50cddaab87cd51eb90f08e09408fe86addc62515caf1f3bc34300d00dc7920ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50cddaab87cd51eb90f08e09408fe86addc62515caf1f3bc34300d00dc7920ab", kill_on_drop: false }`
[INFO] [stdout] 50cddaab87cd51eb90f08e09408fe86addc62515caf1f3bc34300d00dc7920ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3df9391d3d45a9b3d57c6b44744e015b2c42b6f72537146f4b291b1d1b7956d
[INFO] running `Command { std: "docker" "start" "-a" "f3df9391d3d45a9b3d57c6b44744e015b2c42b6f72537146f4b291b1d1b7956d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking pnet_base v0.28.0
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking pnet_macros_support v0.28.0
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling pnet v0.28.0
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking pnet_sys v0.28.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking dns-lookup v1.0.7
[INFO] [stderr]     Checking tui v0.15.0
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]     Checking ipnetwork v0.18.0
[INFO] [stderr]     Checking pnet_datalink v0.28.0
[INFO] [stderr]    Compiling pnet_macros v0.28.0
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking pnet_packet v0.28.0
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking pnet_transport v0.28.0
[INFO] [stderr]     Checking sentinel v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> src/config.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::path::PathBuf;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `EtherType`
[INFO] [stdout]  --> src/sniffer/mod.rs:6:30
[INFO] [stdout]   |
[INFO] [stdout] 6 | use pnet::packet::ethernet::{EtherType, EthernetPacket };
[INFO] [stdout]   |                              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `pnet::packet::ipv4::Ipv4Packet`
[INFO] [stdout]  --> src/sniffer/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use pnet::packet::ipv4::Ipv4Packet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `pnet::packet::Packet`
[INFO] [stdout]  --> src/sniffer/mod.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use pnet::packet::Packet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> src/config.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::path::PathBuf;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `EtherType`
[INFO] [stdout]  --> src/sniffer/mod.rs:6:30
[INFO] [stdout]   |
[INFO] [stdout] 6 | use pnet::packet::ethernet::{EtherType, EthernetPacket };
[INFO] [stdout]   |                              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `pnet::packet::ipv4::Ipv4Packet`
[INFO] [stdout]  --> src/sniffer/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use pnet::packet::ipv4::Ipv4Packet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `pnet::packet::Packet`
[INFO] [stdout]  --> src/sniffer/mod.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use pnet::packet::Packet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `verbose` is never read
[INFO] [stdout]  --> src/config.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Opts {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 7 |     #[structopt(short, long)]
[INFO] [stdout] 8 |     pub verbose: bool,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Opts` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `handle` is never used
[INFO] [stdout]  --> src/sniffer/handlers.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub trait ProtocolHandler {
[INFO] [stdout]   |           --------------- method in this trait
[INFO] [stdout] 9 |     fn handle(&self, interface_name: &str, source: IpAddr, destination: IpAddr, packet: &[u8]);
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Protocol` is never constructed
[INFO] [stdout]   --> src/sniffer/sniffer_handler.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum Handler {
[INFO] [stdout]    |          ------- variant in this enum
[INFO] [stdout] 14 |     Packet(EtherType, Box<dyn PacketHandler>),
[INFO] [stdout] 15 |     Protocol(IpNextHeaderProtocol, Box<dyn ProtocolHandler>),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `handle_protocol` is never used
[INFO] [stdout]   --> src/sniffer/sniffer_handler.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl SnifferHandler {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn handle_protocol(&self, packet_type: EtherType) -> Option<&Box<dyn PacketHandler>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]   --> src/sniffer/mod.rs:29:62
[INFO] [stdout]    |
[INFO] [stdout] 29 |             Ok(_) => panic!("sniffer: unhandled channel type {}"),
[INFO] [stdout]    |                                                              ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]    |
[INFO] [stdout] 29 |             Ok(_) => panic!("sniffer: unhandled channel type {}", ...),
[INFO] [stdout]    |                                                                 +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 29 |             Ok(_) => panic!("{}", "sniffer: unhandled channel type {}"),
[INFO] [stdout]    |                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `verbose` is never read
[INFO] [stdout]  --> src/config.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Opts {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 7 |     #[structopt(short, long)]
[INFO] [stdout] 8 |     pub verbose: bool,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Opts` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `handle` is never used
[INFO] [stdout]  --> src/sniffer/handlers.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub trait ProtocolHandler {
[INFO] [stdout]   |           --------------- method in this trait
[INFO] [stdout] 9 |     fn handle(&self, interface_name: &str, source: IpAddr, destination: IpAddr, packet: &[u8]);
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Protocol` is never constructed
[INFO] [stdout]   --> src/sniffer/sniffer_handler.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum Handler {
[INFO] [stdout]    |          ------- variant in this enum
[INFO] [stdout] 14 |     Packet(EtherType, Box<dyn PacketHandler>),
[INFO] [stdout] 15 |     Protocol(IpNextHeaderProtocol, Box<dyn ProtocolHandler>),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `handle_protocol` is never used
[INFO] [stdout]   --> src/sniffer/sniffer_handler.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl SnifferHandler {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn handle_protocol(&self, packet_type: EtherType) -> Option<&Box<dyn PacketHandler>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]   --> src/sniffer/mod.rs:29:62
[INFO] [stdout]    |
[INFO] [stdout] 29 |             Ok(_) => panic!("sniffer: unhandled channel type {}"),
[INFO] [stdout]    |                                                              ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]    |
[INFO] [stdout] 29 |             Ok(_) => panic!("sniffer: unhandled channel type {}", ...),
[INFO] [stdout]    |                                                                 +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 29 |             Ok(_) => panic!("{}", "sniffer: unhandled channel type {}"),
[INFO] [stdout]    |                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.95s
[INFO] running `Command { std: "docker" "inspect" "f3df9391d3d45a9b3d57c6b44744e015b2c42b6f72537146f4b291b1d1b7956d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3df9391d3d45a9b3d57c6b44744e015b2c42b6f72537146f4b291b1d1b7956d", kill_on_drop: false }`
[INFO] [stdout] f3df9391d3d45a9b3d57c6b44744e015b2c42b6f72537146f4b291b1d1b7956d