[INFO] cloning repository https://github.com/cuppar/rnet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cuppar/rnet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcuppar%2Frnet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcuppar%2Frnet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d42d1c3315e4946b55695479e70dc3735a0ff28b
[INFO] building cuppar/rnet against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcuppar%2Frnet" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cuppar/rnet on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cuppar/rnet
[INFO] finished tweaking git repo https://github.com/cuppar/rnet
[INFO] tweaked toml for git repo https://github.com/cuppar/rnet written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/cuppar/rnet 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5763a394f3d94f309e02a8fcb92192e6a31048fe37fb715078f55c7d36ff734
[INFO] running `Command { std: "docker" "start" "-a" "e5763a394f3d94f309e02a8fcb92192e6a31048fe37fb715078f55c7d36ff734", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5763a394f3d94f309e02a8fcb92192e6a31048fe37fb715078f55c7d36ff734", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5763a394f3d94f309e02a8fcb92192e6a31048fe37fb715078f55c7d36ff734", kill_on_drop: false }`
[INFO] [stdout] e5763a394f3d94f309e02a8fcb92192e6a31048fe37fb715078f55c7d36ff734
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2798267e2a7cb755fd4e34d1c249e7f92988ab555596020c07f0f8980bf934bb
[INFO] running `Command { std: "docker" "start" "-a" "2798267e2a7cb755fd4e34d1c249e7f92988ab555596020c07f0f8980bf934bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling getrandom v0.2.11
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rnet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BufRead`, `BufReader`, `Read`, `Write`, `cmp`, `net::TcpStream`, `self`, and `time::Duration`
[INFO] [stdout]  --> src/tcp_client.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     cmp,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 3 |     io::{self, BufRead, BufReader, Read, Write},
[INFO] [stdout]   |          ^^^^  ^^^^^^^  ^^^^^^^^^  ^^^^  ^^^^^
[INFO] [stdout] 4 |     net::TcpStream,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 5 |     time::Duration,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TcpListener`
[INFO] [stdout]  --> src/tcp_server.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 |     net::{TcpListener, TcpStream},
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `net::UdpSocket`, `thread`, and `time::Duration`
[INFO] [stdout]  --> src/udp_server.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{net::UdpSocket, thread, time::Duration};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^  ^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng` and `thread_rng`
[INFO] [stdout]  --> src/udp_server.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `io` and `net::UdpSocket`
[INFO] [stdout]  --> src/udp_client.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io, net::UdpSocket};
[INFO] [stdout]   |           ^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::net::IpAddr`
[INFO] [stdout]  --> src/net.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::net::IpAddr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Result` is never used
[INFO] [stdout]  --> src/tcp_server.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | type Result<T> = std::result::Result<T, std::io::Error>;
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_client` is never used
[INFO] [stdout]   --> src/tcp_server.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn handle_client(mut stream: TcpStream) -> Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.13s
[INFO] running `Command { std: "docker" "inspect" "2798267e2a7cb755fd4e34d1c249e7f92988ab555596020c07f0f8980bf934bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2798267e2a7cb755fd4e34d1c249e7f92988ab555596020c07f0f8980bf934bb", kill_on_drop: false }`
[INFO] [stdout] 2798267e2a7cb755fd4e34d1c249e7f92988ab555596020c07f0f8980bf934bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] adebe9ed1f3ab995dbae7702731b7fcd8767bf0686c813c21d351e986be068d5
[INFO] running `Command { std: "docker" "start" "-a" "adebe9ed1f3ab995dbae7702731b7fcd8767bf0686c813c21d351e986be068d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling rnet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Read` and `cmp`
[INFO] [stdout]  --> src/tcp_client.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     cmp,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 3 |     io::{self, BufRead, BufReader, Read, Write},
[INFO] [stdout]   |                                    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `global`
[INFO] [stdout]  --> src/net.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let global: IpAddr = IpAddr::from([0, 0, 0x1c9, 0, 0, 0xafc8, 0, 0x1]);
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_global`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "adebe9ed1f3ab995dbae7702731b7fcd8767bf0686c813c21d351e986be068d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adebe9ed1f3ab995dbae7702731b7fcd8767bf0686c813c21d351e986be068d5", kill_on_drop: false }`
[INFO] [stdout] adebe9ed1f3ab995dbae7702731b7fcd8767bf0686c813c21d351e986be068d5