[INFO] updating cached repository https://github.com/AbsoluteVirtueXI/echo-rust
[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] 0885589faa312bcec7c33ee407a0f1e324a62e11
[INFO] testing AbsoluteVirtueXI/echo-rust against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbsoluteVirtueXI%2Fecho-rust" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AbsoluteVirtueXI/echo-rust on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/AbsoluteVirtueXI/echo-rust
[INFO] finished tweaking git repo https://github.com/AbsoluteVirtueXI/echo-rust
[INFO] tweaked toml for git repo https://github.com/AbsoluteVirtueXI/echo-rust written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/AbsoluteVirtueXI/echo-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1f8701c7e9495c7ed98deec8b78164d870e8bcb087d36eb280a0859d9bb9ea98
[INFO] running `"docker" "start" "-a" "1f8701c7e9495c7ed98deec8b78164d870e8bcb087d36eb280a0859d9bb9ea98"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling futures-sink v0.3.4
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling signal-hook-registry v1.2.0
[INFO] [stderr]    Compiling futures-channel v0.3.4
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling async-trait v0.1.30
[INFO] [stderr]    Compiling tokio v0.2.20
[INFO] [stderr]    Compiling futures-util v0.3.4
[INFO] [stderr]    Compiling futures-executor v0.3.4
[INFO] [stderr]    Compiling futures v0.3.4
[INFO] [stderr]    Compiling echo-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `IpAddr`
[INFO] [stderr]  --> src/easy_net.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::net::{IpAddr, Ipv4Addr, SocketAddr, SocketAddrV4};
[INFO] [stderr]   |                ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `async_trait::async_trait`
[INFO] [stderr]   --> src/easy_net.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use async_trait::async_trait;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/easy_net.rs:66:23
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub async fn bind(s: &str) -> io::Result<TcpServer> {
[INFO] [stderr]    |                       ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Client`
[INFO] [stderr]   --> src/easy_net.rs:53:6
[INFO] [stderr]    |
[INFO] [stderr] 53 | enum Client {
[INFO] [stderr]    |      ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `TcpClient`
[INFO] [stderr]    --> src/easy_net.rs:116:8
[INFO] [stderr]     |
[INFO] [stderr] 116 | struct TcpClient {}
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `connect`
[INFO] [stderr]    --> src/easy_net.rs:119:5
[INFO] [stderr]     |
[INFO] [stderr] 119 |     pub async fn connect() {}
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `P2PClient`
[INFO] [stderr]    --> src/easy_net.rs:126:8
[INFO] [stderr]     |
[INFO] [stderr] 126 | struct P2PClient {}
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Connection`
[INFO] [stderr]    --> src/easy_net.rs:128:6
[INFO] [stderr]     |
[INFO] [stderr] 128 | enum Connection {
[INFO] [stderr]     |      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `_get_local_SocketAddr` should have a snake case name
[INFO] [stderr]   --> src/easy_net.rs:16:4
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn _get_local_SocketAddr(stream: &TcpStream) -> SocketAddr {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `_get_local_socket_addr`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `_get_peer_SocketAddr` should have a snake case name
[INFO] [stderr]   --> src/easy_net.rs:23:4
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn _get_peer_SocketAddr(stream: &TcpStream) -> SocketAddr {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `_get_peer_socket_addr`
[INFO] [stderr] 
[INFO] [stderr] warning: function `_get_unspecified_SocketAddr` should have a snake case name
[INFO] [stderr]   --> src/easy_net.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn _get_unspecified_SocketAddr() -> SocketAddr {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `_get_unspecified_socket_addr`
[INFO] [stderr] 
[INFO] [stderr] warning: 11 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: unexpected closing delimiter: `}`
[INFO] [stderr]   --> src/bin/server.rs:52:1
[INFO] [stderr]    |
[INFO] [stderr] 52 | }
[INFO] [stderr]    | ^ unexpected closing delimiter
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `echo-rust`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused variable: `recvx`
[INFO] [stderr]   --> src/bin/client.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let recvx = tokio::spawn( async move {
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_recvx`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/bin/client.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut stream = TcpStream::connect("127.0.0.1:7777").await?;
[INFO] [stderr]   |         ----^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/client.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     sendx.await?;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "1f8701c7e9495c7ed98deec8b78164d870e8bcb087d36eb280a0859d9bb9ea98"`
[INFO] running `"docker" "rm" "-f" "1f8701c7e9495c7ed98deec8b78164d870e8bcb087d36eb280a0859d9bb9ea98"`
[INFO] [stdout] 1f8701c7e9495c7ed98deec8b78164d870e8bcb087d36eb280a0859d9bb9ea98