[INFO] cloning repository https://github.com/erwanor/traceroute-fun [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/erwanor/traceroute-fun" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferwanor%2Ftraceroute-fun", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferwanor%2Ftraceroute-fun'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 80ac80480073e88aadd1e8726f9af44b2b84cb27 [INFO] checking erwanor/traceroute-fun against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferwanor%2Ftraceroute-fun" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/erwanor/traceroute-fun 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/erwanor/traceroute-fun [INFO] finished tweaking git repo https://github.com/erwanor/traceroute-fun [INFO] tweaked toml for git repo https://github.com/erwanor/traceroute-fun written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/erwanor/traceroute-fun 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 tokio-icmp-echo v0.4.1 [INFO] [stderr] Downloaded icmp v0.3.0 [INFO] [stderr] Downloaded etherparse v0.10.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 40c2e1689c48a6d9b42ac69955a88d0efdb11aecb8a30365d7e72c8bfcbc6525 [INFO] running `Command { std: "docker" "start" "-a" "40c2e1689c48a6d9b42ac69955a88d0efdb11aecb8a30365d7e72c8bfcbc6525", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "40c2e1689c48a6d9b42ac69955a88d0efdb11aecb8a30365d7e72c8bfcbc6525", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "40c2e1689c48a6d9b42ac69955a88d0efdb11aecb8a30365d7e72c8bfcbc6525", kill_on_drop: false }` [INFO] [stdout] 40c2e1689c48a6d9b42ac69955a88d0efdb11aecb8a30365d7e72c8bfcbc6525 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 938c02d9f061f2af138c61479ddbef030667acae82c77803b72881b4aaf0bd56 [INFO] running `Command { std: "docker" "start" "-a" "938c02d9f061f2af138c61479ddbef030667acae82c77803b72881b4aaf0bd56", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.126 [INFO] [stderr] Compiling proc-macro2 v1.0.39 [INFO] [stderr] Compiling unicode-ident v1.0.0 [INFO] [stderr] Compiling syn v1.0.95 [INFO] [stderr] Compiling futures-core v0.3.21 [INFO] [stderr] Compiling futures-channel v0.3.21 [INFO] [stderr] Checking futures-sink v0.3.21 [INFO] [stderr] Checking once_cell v1.12.0 [INFO] [stderr] Checking etherparse v0.10.1 [INFO] [stderr] Compiling quote v1.0.18 [INFO] [stderr] Checking getrandom v0.2.6 [INFO] [stderr] Checking parking_lot_core v0.9.3 [INFO] [stderr] Checking socket2 v0.4.4 [INFO] [stderr] Checking mio v0.8.3 [INFO] [stderr] Checking signal-hook-registry v1.4.0 [INFO] [stderr] Checking num_cpus v1.13.1 [INFO] [stderr] Checking icmp v0.3.0 [INFO] [stderr] Checking parking_lot v0.12.1 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Compiling futures-macro v0.3.21 [INFO] [stderr] Compiling thiserror-impl v1.0.31 [INFO] [stderr] Compiling tokio-macros v1.7.0 [INFO] [stderr] Checking tokio v1.18.2 [INFO] [stderr] Checking futures-util v0.3.21 [INFO] [stderr] Checking thiserror v1.0.31 [INFO] [stderr] Checking futures-executor v0.3.21 [INFO] [stderr] Checking futures v0.3.21 [INFO] [stderr] Checking tokio-icmp-echo v0.4.1 [INFO] [stderr] Checking traceroute-rs v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::borrow::BorrowMut` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::borrow::BorrowMut; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `IpAddr`, `TcpStream` [INFO] [stdout] --> src/main.rs:2:16 [INFO] [stdout] | [INFO] [stdout] 2 | use std::net::{IpAddr, Ipv4Addr, TcpStream, UdpSocket, SocketAddrV4}; [INFO] [stdout] | ^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `bytes::BytesMut` [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use bytes::BytesMut; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `icmp` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use icmp; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io::prelude::*` [INFO] [stdout] --> src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use std::io::prelude::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::borrow::BorrowMut` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::borrow::BorrowMut; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `IpAddr`, `TcpStream` [INFO] [stdout] --> src/main.rs:2:16 [INFO] [stdout] | [INFO] [stdout] 2 | use std::net::{IpAddr, Ipv4Addr, TcpStream, UdpSocket, SocketAddrV4}; [INFO] [stdout] | ^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `bytes::BytesMut` [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use bytes::BytesMut; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `icmp` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use icmp; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io::prelude::*` [INFO] [stdout] --> src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use std::io::prelude::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let mut socket = UdpSocket::bind(localhost_addr).expect("failed to bind udp socket"); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let mut socket = UdpSocket::bind(localhost_addr).expect("failed to bind udp socket"); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | socket.set_ttl(3); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 22 | let _ = socket.set_ttl(3); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 23 | socket.send(&[1,2,3, 4, 5]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 23 | let _ = socket.send(&[1,2,3, 4, 5]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | socket.set_ttl(3); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 22 | let _ = socket.set_ttl(3); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 23 | socket.send(&[1,2,3, 4, 5]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 23 | let _ = socket.send(&[1,2,3, 4, 5]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.70s [INFO] running `Command { std: "docker" "inspect" "938c02d9f061f2af138c61479ddbef030667acae82c77803b72881b4aaf0bd56", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "938c02d9f061f2af138c61479ddbef030667acae82c77803b72881b4aaf0bd56", kill_on_drop: false }` [INFO] [stdout] 938c02d9f061f2af138c61479ddbef030667acae82c77803b72881b4aaf0bd56 [INFO] checking erwanor/traceroute-fun against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferwanor%2Ftraceroute-fun" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/erwanor/traceroute-fun on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/erwanor/traceroute-fun [INFO] finished tweaking git repo https://github.com/erwanor/traceroute-fun [INFO] tweaked toml for git repo https://github.com/erwanor/traceroute-fun written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/erwanor/traceroute-fun 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3ab59eaa682ca487022f882291b3196ca3bba0668ef7621786fe4bf25fb819fb [INFO] running `Command { std: "docker" "start" "-a" "3ab59eaa682ca487022f882291b3196ca3bba0668ef7621786fe4bf25fb819fb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3ab59eaa682ca487022f882291b3196ca3bba0668ef7621786fe4bf25fb819fb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3ab59eaa682ca487022f882291b3196ca3bba0668ef7621786fe4bf25fb819fb", kill_on_drop: false }` [INFO] [stdout] 3ab59eaa682ca487022f882291b3196ca3bba0668ef7621786fe4bf25fb819fb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7c6bfbdf4abeaafe6c193e65125d0f755f3ff08b3cefbb263a9f8eb09589f3e1 [INFO] running `Command { std: "docker" "start" "-a" "7c6bfbdf4abeaafe6c193e65125d0f755f3ff08b3cefbb263a9f8eb09589f3e1", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.126 [INFO] [stderr] Compiling proc-macro2 v1.0.39 [INFO] [stderr] Compiling unicode-ident v1.0.0 [INFO] [stderr] Compiling syn v1.0.95 [INFO] [stderr] Compiling futures-core v0.3.21 [INFO] [stderr] Compiling futures-channel v0.3.21 [INFO] [stderr] Checking futures-sink v0.3.21 [INFO] [stderr] Checking once_cell v1.12.0 [INFO] [stderr] Checking etherparse v0.10.1 [INFO] [stderr] Compiling quote v1.0.18 [INFO] [stderr] Checking getrandom v0.2.6 [INFO] [stderr] Checking parking_lot_core v0.9.3 [INFO] [stderr] Checking signal-hook-registry v1.4.0 [INFO] [stderr] Checking mio v0.8.3 [INFO] [stderr] Checking num_cpus v1.13.1 [INFO] [stderr] Checking socket2 v0.4.4 [INFO] [stderr] Checking icmp v0.3.0 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking parking_lot v0.12.1 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Compiling futures-macro v0.3.21 [INFO] [stderr] Compiling thiserror-impl v1.0.31 [INFO] [stderr] Compiling tokio-macros v1.7.0 [INFO] [stderr] Checking tokio v1.18.2 [INFO] [stderr] Checking futures-util v0.3.21 [INFO] [stderr] Checking thiserror v1.0.31 [INFO] [stderr] Checking futures-executor v0.3.21 [INFO] [stderr] Checking futures v0.3.21 [INFO] [stderr] Checking tokio-icmp-echo v0.4.1 [INFO] [stderr] Checking traceroute-rs v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::borrow::BorrowMut` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::borrow::BorrowMut; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `IpAddr`, `TcpStream` [INFO] [stdout] --> src/main.rs:2:16 [INFO] [stdout] | [INFO] [stdout] 2 | use std::net::{IpAddr, Ipv4Addr, TcpStream, UdpSocket, SocketAddrV4}; [INFO] [stdout] | ^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `bytes::BytesMut` [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use bytes::BytesMut; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `icmp` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use icmp; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io::prelude::*` [INFO] [stdout] --> src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use std::io::prelude::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::borrow::BorrowMut` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::borrow::BorrowMut; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `IpAddr`, `TcpStream` [INFO] [stdout] --> src/main.rs:2:16 [INFO] [stdout] | [INFO] [stdout] 2 | use std::net::{IpAddr, Ipv4Addr, TcpStream, UdpSocket, SocketAddrV4}; [INFO] [stdout] | ^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `bytes::BytesMut` [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use bytes::BytesMut; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `icmp` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use icmp; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io::prelude::*` [INFO] [stdout] --> src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use std::io::prelude::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let mut socket = UdpSocket::bind(localhost_addr).expect("failed to bind udp socket"); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let mut socket = UdpSocket::bind(localhost_addr).expect("failed to bind udp socket"); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | socket.set_ttl(3); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 22 | let _ = socket.set_ttl(3); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 23 | socket.send(&[1,2,3, 4, 5]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 23 | let _ = socket.send(&[1,2,3, 4, 5]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | socket.set_ttl(3); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 22 | let _ = socket.set_ttl(3); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 23 | socket.send(&[1,2,3, 4, 5]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 23 | let _ = socket.send(&[1,2,3, 4, 5]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.24s [INFO] running `Command { std: "docker" "inspect" "7c6bfbdf4abeaafe6c193e65125d0f755f3ff08b3cefbb263a9f8eb09589f3e1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7c6bfbdf4abeaafe6c193e65125d0f755f3ff08b3cefbb263a9f8eb09589f3e1", kill_on_drop: false }` [INFO] [stdout] 7c6bfbdf4abeaafe6c193e65125d0f755f3ff08b3cefbb263a9f8eb09589f3e1