[INFO] cloning repository https://github.com/erebe/memcached_proxy
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/erebe/memcached_proxy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferebe%2Fmemcached_proxy"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferebe%2Fmemcached_proxy'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3bbfe52bf123262f7d680b22d839b1f034f957a4
[INFO] checking erebe/memcached_proxy against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferebe%2Fmemcached_proxy" "/workspace/builds/worker-13/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/erebe/memcached_proxy on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/erebe/memcached_proxy
[INFO] finished tweaking git repo https://github.com/erebe/memcached_proxy
[INFO] tweaked toml for git repo https://github.com/erebe/memcached_proxy written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/erebe/memcached_proxy already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=forbid" "-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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8238abe9e8c7e95380c9edae10f4ab5fb39c8041ae7aa2d6d3bc30ae84a40cb5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "8238abe9e8c7e95380c9edae10f4ab5fb39c8041ae7aa2d6d3bc30ae84a40cb5"`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]     Checking futures-sink v0.3.1
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]     Checking futures-io v0.3.1
[INFO] [stderr]     Checking futures-task v0.3.1
[INFO] [stderr]     Checking arc-swap v0.4.4
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking futures-channel v0.3.1
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling tokio-macros v0.2.0
[INFO] [stderr]    Compiling num-derive v0.3.0
[INFO] [stderr]     Checking tokio v0.2.4
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]     Checking memcached_proxy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `bytes::buf::BufExt`
[INFO] [stderr]  --> src/memcached_codec.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use bytes::buf::BufExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/memcached_codec.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Framed`
[INFO] [stderr]  --> src/memcached_codec.rs:6:43
[INFO] [stderr]   |
[INFO] [stderr] 6 | use tokio_util::codec::{Decoder, Encoder, Framed};
[INFO] [stderr]   |                                           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BytesMut`
[INFO] [stderr]  --> src/protocol/memcached_binary.rs:1:20
[INFO] [stderr]   |
[INFO] [stderr] 1 | use bytes::{Bytes, BytesMut};
[INFO] [stderr]   |                    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::io`
[INFO] [stderr]   --> src/main.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 | use tokio::io;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LinesCodec`
[INFO] [stderr]   --> src/main.rs:36:33
[INFO] [stderr]    |
[INFO] [stderr] 36 | use tokio_util::codec::{Framed, LinesCodec};
[INFO] [stderr]    |                                 ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Magic`
[INFO] [stderr]   --> src/main.rs:39:41
[INFO] [stderr]    |
[INFO] [stderr] 39 | use crate::protocol::memcached_binary::{Magic, PacketHeader};
[INFO] [stderr]    |                                         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `bytes::Bytes`
[INFO] [stderr]   --> src/main.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 | use bytes::Bytes;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `IntoFuture`, `try_join`
[INFO] [stderr]   --> src/main.rs:41:23
[INFO] [stderr]    |
[INFO] [stderr] 41 | use futures::future::{try_join, IntoFuture};
[INFO] [stderr]    |                       ^^^^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `bytes::buf::BufExt`
[INFO] [stderr]  --> src/memcached_codec.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use bytes::buf::BufExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/memcached_codec.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Framed`
[INFO] [stderr]  --> src/memcached_codec.rs:6:43
[INFO] [stderr]   |
[INFO] [stderr] 6 | use tokio_util::codec::{Decoder, Encoder, Framed};
[INFO] [stderr]   |                                           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BytesMut`
[INFO] [stderr]  --> src/protocol/memcached_binary.rs:1:20
[INFO] [stderr]   |
[INFO] [stderr] 1 | use bytes::{Bytes, BytesMut};
[INFO] [stderr]   |                    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::io`
[INFO] [stderr]   --> src/main.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 | use tokio::io;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LinesCodec`
[INFO] [stderr]   --> src/main.rs:36:33
[INFO] [stderr]    |
[INFO] [stderr] 36 | use tokio_util::codec::{Framed, LinesCodec};
[INFO] [stderr]    |                                 ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Magic`
[INFO] [stderr]   --> src/main.rs:39:41
[INFO] [stderr]    |
[INFO] [stderr] 39 | use crate::protocol::memcached_binary::{Magic, PacketHeader};
[INFO] [stderr]    |                                         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `bytes::Bytes`
[INFO] [stderr]   --> src/main.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 | use bytes::Bytes;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `IntoFuture`, `try_join`
[INFO] [stderr]   --> src/main.rs:41:23
[INFO] [stderr]    |
[INFO] [stderr] 41 | use futures::future::{try_join, IntoFuture};
[INFO] [stderr]    |                       ^^^^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:73:19
[INFO] [stderr]    |
[INFO] [stderr] 73 | async fn transfer(mut inbound: TcpStream, proxy_addr: String) -> Result<(), Box<dyn Error>> {
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:73:19
[INFO] [stderr]    |
[INFO] [stderr] 73 | async fn transfer(mut inbound: TcpStream, proxy_addr: String) -> Result<(), Box<dyn Error>> {
[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 extern crate
[INFO] [stderr]   --> src/main.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | extern crate num;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^ help: remove it
[INFO] [stderr]    |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]   --> src/main.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 | #![warn(rust_2018_idioms)]
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]    = note: `#[warn(unused_extern_crates)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `proxy_addr`
[INFO] [stderr]   --> src/main.rs:73:43
[INFO] [stderr]    |
[INFO] [stderr] 73 | async fn transfer(mut inbound: TcpStream, proxy_addr: String) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |                                           ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_proxy_addr`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused extern crate
[INFO] [stderr]   --> src/main.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | extern crate num;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^ help: remove it
[INFO] [stderr]    |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]   --> src/main.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 | #![warn(rust_2018_idioms)]
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]    = note: `#[warn(unused_extern_crates)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `proxy_addr`
[INFO] [stderr]   --> src/main.rs:73:43
[INFO] [stderr]    |
[INFO] [stderr] 73 | async fn transfer(mut inbound: TcpStream, proxy_addr: String) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |                                           ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_proxy_addr`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.15s
[INFO] running `"docker" "inspect" "8238abe9e8c7e95380c9edae10f4ab5fb39c8041ae7aa2d6d3bc30ae84a40cb5"`
[INFO] running `"docker" "rm" "-f" "8238abe9e8c7e95380c9edae10f4ab5fb39c8041ae7aa2d6d3bc30ae84a40cb5"`
[INFO] [stdout] 8238abe9e8c7e95380c9edae10f4ab5fb39c8041ae7aa2d6d3bc30ae84a40cb5