[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] testing caiomcg/sentinel against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcaiomcg%2Fsentinel" "/workspace/builds/worker-36/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-36/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/caiomcg/sentinel on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-36/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: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dns-lookup v1.0.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a99644683ad9d9435eaa3767c060ea7ad1e74596ca90b1cc075e694e430c960
[INFO] running `Command { std: "docker" "start" "-a" "0a99644683ad9d9435eaa3767c060ea7ad1e74596ca90b1cc075e694e430c960", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a99644683ad9d9435eaa3767c060ea7ad1e74596ca90b1cc075e694e430c960", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a99644683ad9d9435eaa3767c060ea7ad1e74596ca90b1cc075e694e430c960", kill_on_drop: false }`
[INFO] [stdout] 0a99644683ad9d9435eaa3767c060ea7ad1e74596ca90b1cc075e694e430c960
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81490dd566bb75dc0ac74573baefa1bb09ab19dab38dd52fa1758ddf226c4106
[INFO] running `Command { std: "docker" "start" "-a" "81490dd566bb75dc0ac74573baefa1bb09ab19dab38dd52fa1758ddf226c4106", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling pnet_base v0.28.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling pnet v0.28.0
[INFO] [stderr]    Compiling cassowary v0.3.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling pnet_macros_support v0.28.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling pnet_sys v0.28.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling termion v1.5.6
[INFO] [stderr]    Compiling socket2 v0.4.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling dns-lookup v1.0.7
[INFO] [stderr]    Compiling tui v0.15.0
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling ipnetwork v0.18.0
[INFO] [stderr]    Compiling pnet_datalink v0.28.0
[INFO] [stderr]    Compiling pnet_macros v0.28.0
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling pnet_packet v0.28.0
[INFO] [stderr]    Compiling structopt v0.3.21
[INFO] [stderr]    Compiling pnet_transport v0.28.0
[INFO] [stderr]    Compiling 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: variant is never constructed: `Protocol`
[INFO] [stdout]   --> src/sniffer/sniffer_handler.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Protocol(IpNextHeaderProtocol, Box<dyn ProtocolHandler>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `handle_protocol`
[INFO] [stdout]   --> src/sniffer/sniffer_handler.rs:49:12
[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: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[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: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.79s
[INFO] running `Command { std: "docker" "inspect" "81490dd566bb75dc0ac74573baefa1bb09ab19dab38dd52fa1758ddf226c4106", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81490dd566bb75dc0ac74573baefa1bb09ab19dab38dd52fa1758ddf226c4106", kill_on_drop: false }`
[INFO] [stdout] 81490dd566bb75dc0ac74573baefa1bb09ab19dab38dd52fa1758ddf226c4106
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc25bca7fccaba0ab0a62d4ed99d74bd41ede1d3be9294dfc73cf7456031e9d5
[INFO] running `Command { std: "docker" "start" "-a" "fc25bca7fccaba0ab0a62d4ed99d74bd41ede1d3be9294dfc73cf7456031e9d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: variant is never constructed: `Protocol`
[INFO] [stdout]   --> src/sniffer/sniffer_handler.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Protocol(IpNextHeaderProtocol, Box<dyn ProtocolHandler>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `handle_protocol`
[INFO] [stdout]   --> src/sniffer/sniffer_handler.rs:49:12
[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: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[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: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "fc25bca7fccaba0ab0a62d4ed99d74bd41ede1d3be9294dfc73cf7456031e9d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc25bca7fccaba0ab0a62d4ed99d74bd41ede1d3be9294dfc73cf7456031e9d5", kill_on_drop: false }`
[INFO] [stdout] fc25bca7fccaba0ab0a62d4ed99d74bd41ede1d3be9294dfc73cf7456031e9d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6aeeecdcf62446fe0f9d482e157da32c45b7ca2f60d309c343d62b0f357e804d
[INFO] running `Command { std: "docker" "start" "-a" "6aeeecdcf62446fe0f9d482e157da32c45b7ca2f60d309c343d62b0f357e804d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `std::path::PathBuf`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/config.rs:2:5
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 2 | use std::path::PathBuf;
[INFO] [stdout] 
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `EtherType`
[INFO] [stderr]  --> src/sniffer/mod.rs:6:30
[INFO] [stderr]   |
[INFO] [stderr] 6 | use pnet::packet::ethernet::{EtherType, EthernetPacket };
[INFO] [stderr]   |                              ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `pnet::packet::ipv4::Ipv4Packet`
[INFO] [stderr]  --> src/sniffer/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use pnet::packet::ipv4::Ipv4Packet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `pnet::packet::Packet`
[INFO] [stderr]  --> src/sniffer/mod.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use pnet::packet::Packet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Protocol`
[INFO] [stderr]   --> src/sniffer/sniffer_handler.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Protocol(IpNextHeaderProtocol, Box<dyn ProtocolHandler>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `handle_protocol`
[INFO] [stderr]   --> src/sniffer/sniffer_handler.rs:49:12
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub fn handle_protocol(&self, packet_type: EtherType) -> Option<&Box<dyn PacketHandler>> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains an unused formatting placeholder
[INFO] [stderr]   --> src/sniffer/mod.rs:29:62
[INFO] [stderr]    |
[INFO] [stderr] 29 |             Ok(_) => panic!("sniffer: unhandled channel type {}"),
[INFO] [stderr]    |                                                              ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stderr] help: add the missing argument
[INFO] [stderr]    |
[INFO] [stderr] 29 |             Ok(_) => panic!("sniffer: unhandled channel type {}", ...),
[INFO] [stderr]    |                                                                 ^^^^^
[INFO] [stderr] help: or add a "{}" format string to use the message literally
[INFO] [stderr]    |
[INFO] [stderr] 29 |             Ok(_) => panic!("{}", "sniffer: unhandled channel type {}"),
[INFO] [stderr]    |                             ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `sentinel` (bin "sentinel" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.62s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sentinel-57a3257b8be95b6b)
[INFO] running `Command { std: "docker" "inspect" "6aeeecdcf62446fe0f9d482e157da32c45b7ca2f60d309c343d62b0f357e804d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aeeecdcf62446fe0f9d482e157da32c45b7ca2f60d309c343d62b0f357e804d", kill_on_drop: false }`
[INFO] [stdout] 6aeeecdcf62446fe0f9d482e157da32c45b7ca2f60d309c343d62b0f357e804d