[INFO] cloning repository https://github.com/sozu-proxy/keepalive-bench
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sozu-proxy/keepalive-bench" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsozu-proxy%2Fkeepalive-bench", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsozu-proxy%2Fkeepalive-bench'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ae1d1e142865e4b4c83f4f9a1def2470ef81e518
[INFO] testing sozu-proxy/keepalive-bench against master#1f7f8ea0721a3b1eb73e6c6d25cccb371434b320 for pr-154065-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsozu-proxy%2Fkeepalive-bench" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sozu-proxy/keepalive-bench
[INFO] finished tweaking git repo https://github.com/sozu-proxy/keepalive-bench
[INFO] tweaked toml for git repo https://github.com/sozu-proxy/keepalive-bench written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sozu-proxy/keepalive-bench on toolchain 1f7f8ea0721a3b1eb73e6c6d25cccb371434b320
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sozu-proxy/keepalive-bench 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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]     Updating git repository `https://github.com/hyperium/hyper`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-proto v0.1.1
[INFO] [stderr]   Downloaded slab v0.4.0
[INFO] [stderr]   Downloaded take v0.1.0
[INFO] [stderr]   Downloaded mime v0.3.5
[INFO] [stderr]   Downloaded memchr v1.0.2
[INFO] [stderr]   Downloaded lazy_static v0.2.9
[INFO] [stderr]   Downloaded bytes v0.4.5
[INFO] [stderr]   Downloaded futures-cpupool v0.1.7
[INFO] [stderr]   Downloaded redox_syscall v0.1.31
[INFO] [stderr]   Downloaded fuchsia-zircon-sys v0.2.0
[INFO] [stderr]   Downloaded smallvec v0.2.1
[INFO] [stderr]   Downloaded rustc_version v0.1.7
[INFO] [stderr]   Downloaded thread_local v0.3.4
[INFO] [stderr]   Downloaded num_cpus v1.7.0
[INFO] [stderr]   Downloaded semver v0.1.20
[INFO] [stderr]   Downloaded scoped-tls v0.1.0
[INFO] [stderr]   Downloaded pretty_env_logger v0.1.1
[INFO] [stderr]   Downloaded tokio-service v0.1.0
[INFO] [stderr]   Downloaded csv-core v0.1.3
[INFO] [stderr]   Downloaded relay v0.1.0
[INFO] [stderr]   Downloaded fuchsia-zircon v0.2.1
[INFO] [stderr]   Downloaded aho-corasick v0.6.3
[INFO] [stderr]   Downloaded net2 v0.2.31
[INFO] [stderr]   Downloaded iovec v0.1.1
[INFO] [stderr]   Downloaded unicase v2.0.0
[INFO] [stderr]   Downloaded tokio-core v0.1.10
[INFO] [stderr]   Downloaded rand v0.3.17
[INFO] [stderr]   Downloaded serde v1.0.19
[INFO] [stderr]   Downloaded tokio-io v0.1.3
[INFO] [stderr]   Downloaded regex-syntax v0.4.1
[INFO] [stderr]   Downloaded mio v0.6.11
[INFO] [stderr]   Downloaded futures v0.1.17
[INFO] [stderr]   Downloaded regex v0.2.2
[INFO] [stderr]   Downloaded libc v0.2.33
[INFO] [stderr]   Downloaded csv v1.0.0-beta.5
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 737f493e147374c9df662c6d390490b6df03423678f59e077deb829fe707f8d3
[INFO] running `Command { std: "docker" "start" "-a" "737f493e147374c9df662c6d390490b6df03423678f59e077deb829fe707f8d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "737f493e147374c9df662c6d390490b6df03423678f59e077deb829fe707f8d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "737f493e147374c9df662c6d390490b6df03423678f59e077deb829fe707f8d3", kill_on_drop: false }`
[INFO] [stdout] 737f493e147374c9df662c6d390490b6df03423678f59e077deb829fe707f8d3
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 153296e1b851b22d9d53f37bbdf10c446663ab33c0747c652cc57d9e79584bf6
[INFO] running `Command { std: "docker" "start" "-a" "153296e1b851b22d9d53f37bbdf10c446663ab33c0747c652cc57d9e79584bf6", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling libc v0.2.33
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]    Compiling futures v0.1.17
[INFO] [stderr]    Compiling byteorder v1.1.0
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling lazy_static v0.2.9
[INFO] [stderr]    Compiling slab v0.3.0
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling lazycell v0.5.1
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling scoped-tls v0.1.0
[INFO] [stderr]    Compiling slab v0.4.0
[INFO] [stderr]    Compiling smallvec v0.2.1
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling take v0.1.0
[INFO] [stderr]    Compiling iovec v0.1.1
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling net2 v0.2.31
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling bytes v0.4.5
[INFO] [stderr]    Compiling rand v0.3.17
[INFO] [stderr]    Compiling num_cpus v1.7.0
[INFO] [stderr]    Compiling unicase v2.0.0
[INFO] [stderr]    Compiling mio v0.6.11
[INFO] [stderr]    Compiling csv-core v0.1.3
[INFO] [stderr]    Compiling time v0.1.38
[INFO] [stderr]    Compiling mime v0.3.5
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling percent-encoding v1.0.0
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling httparse v1.2.3
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling serde v1.0.19
[INFO] [stderr]    Compiling tokio-io v0.1.3
[INFO] [stderr]    Compiling tokio-service v0.1.0
[INFO] [stderr]    Compiling relay v0.1.0
[INFO] [stderr]    Compiling futures-cpupool v0.1.7
[INFO] [stderr]    Compiling tokio-core v0.1.10
[INFO] [stderr]    Compiling env_logger v0.4.3
[INFO] [stderr]    Compiling pretty_env_logger v0.1.1
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling hyper v0.11.6 (https://github.com/hyperium/hyper#d3b19112)
[INFO] [stderr]    Compiling csv v1.0.0-beta.5
[INFO] [stderr]    Compiling proxy-benchmark v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `header`
[INFO] [stdout]   --> src/main.rs:20:33
[INFO] [stdout]    |
[INFO] [stdout] 20 | use hyper::{Client, Uri, Error, header};
[INFO] [stdout]    |                                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(conservative_impl_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:235:21
[INFO] [stdout]     |
[INFO] [stdout] 235 |   type Future = Box<Future<Item = TcpStream, Error = io::Error>>;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 235 |   type Future = Box<dyn Future<Item = TcpStream, Error = io::Error>>;
[INFO] [stdout]     |                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:136:39
[INFO] [stdout]     |
[INFO] [stdout] 136 |           let port_number = if let Ok(mut port) = frontend_port.try_lock() {
[INFO] [stdout]     |                                       ----^^^^
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:173:39
[INFO] [stdout]     |
[INFO] [stdout] 173 |           let port_number = if let Ok(mut port) = frontend_port.try_lock() {
[INFO] [stdout]     |                                       ----^^^^
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:194:23
[INFO] [stdout]     |
[INFO] [stdout] 194 |             if let Ok(mut port) = frontend_port.try_lock() {
[INFO] [stdout]     |                       ----^^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `port`
[INFO] [stdout]    --> src/main.rs:194:23
[INFO] [stdout]     |
[INFO] [stdout] 194 |             if let Ok(mut port) = frontend_port.try_lock() {
[INFO] [stdout]     |                       ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_port`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     wtr.write_record(&["time", "client", "status", "instance", "front port", "back port"]);
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let _ = wtr.write_record(&["time", "client", "status", "instance", "front port", "back port"]);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:169:13
[INFO] [stdout]     |
[INFO] [stdout] 169 | /             writer.write_record(&[format!("{}", elapsed), format!("{}", id), format!("{}", status_code),
[INFO] [stdout] 170 | |               format!("{}", backend_id), port_number, format!("{}", backend_connection_port)]);
[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] 169 |             let _ = writer.write_record(&[format!("{}", elapsed), format!("{}", id), format!("{}", status_code),
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:196:15
[INFO] [stdout]     |
[INFO] [stdout] 196 | /               writer.write_record(&[format!("{}", elapsed), format!("{}", id), format!("{}", status_code),
[INFO] [stdout] 197 | |                 "".to_string(), port_number, "".to_string()]);
[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] 196 |               let _ = writer.write_record(&[format!("{}", elapsed), format!("{}", id), format!("{}", status_code),
[INFO] [stdout]     |               +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:218:9
[INFO] [stdout]     |
[INFO] [stdout] 218 | /         writer.write_record(&[format!("{}", elapsed), format!("{}", id2), format!("{}", e),
[INFO] [stdout] 219 | |           "".to_string(), "".to_string(), "".to_string()]);
[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] 218 |         let _ = writer.write_record(&[format!("{}", elapsed), format!("{}", id2), format!("{}", e),
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.87s
[INFO] running `Command { std: "docker" "inspect" "153296e1b851b22d9d53f37bbdf10c446663ab33c0747c652cc57d9e79584bf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "153296e1b851b22d9d53f37bbdf10c446663ab33c0747c652cc57d9e79584bf6", kill_on_drop: false }`
[INFO] [stdout] 153296e1b851b22d9d53f37bbdf10c446663ab33c0747c652cc57d9e79584bf6
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d12c2148f180526f6dc4cf4d59a69cb9425bc0875bc88d9e78f3a58c2ead0d0d
[INFO] running `Command { std: "docker" "start" "-a" "d12c2148f180526f6dc4cf4d59a69cb9425bc0875bc88d9e78f3a58c2ead0d0d", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling proxy-benchmark v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `header`
[INFO] [stdout]   --> src/main.rs:20:33
[INFO] [stdout]    |
[INFO] [stdout] 20 | use hyper::{Client, Uri, Error, header};
[INFO] [stdout]    |                                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(conservative_impl_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:235:21
[INFO] [stdout]     |
[INFO] [stdout] 235 |   type Future = Box<Future<Item = TcpStream, Error = io::Error>>;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 235 |   type Future = Box<dyn Future<Item = TcpStream, Error = io::Error>>;
[INFO] [stdout]     |                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:136:39
[INFO] [stdout]     |
[INFO] [stdout] 136 |           let port_number = if let Ok(mut port) = frontend_port.try_lock() {
[INFO] [stdout]     |                                       ----^^^^
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:173:39
[INFO] [stdout]     |
[INFO] [stdout] 173 |           let port_number = if let Ok(mut port) = frontend_port.try_lock() {
[INFO] [stdout]     |                                       ----^^^^
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:194:23
[INFO] [stdout]     |
[INFO] [stdout] 194 |             if let Ok(mut port) = frontend_port.try_lock() {
[INFO] [stdout]     |                       ----^^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `port`
[INFO] [stdout]    --> src/main.rs:194:23
[INFO] [stdout]     |
[INFO] [stdout] 194 |             if let Ok(mut port) = frontend_port.try_lock() {
[INFO] [stdout]     |                       ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_port`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     wtr.write_record(&["time", "client", "status", "instance", "front port", "back port"]);
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let _ = wtr.write_record(&["time", "client", "status", "instance", "front port", "back port"]);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:169:13
[INFO] [stdout]     |
[INFO] [stdout] 169 | /             writer.write_record(&[format!("{}", elapsed), format!("{}", id), format!("{}", status_code),
[INFO] [stdout] 170 | |               format!("{}", backend_id), port_number, format!("{}", backend_connection_port)]);
[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] 169 |             let _ = writer.write_record(&[format!("{}", elapsed), format!("{}", id), format!("{}", status_code),
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:196:15
[INFO] [stdout]     |
[INFO] [stdout] 196 | /               writer.write_record(&[format!("{}", elapsed), format!("{}", id), format!("{}", status_code),
[INFO] [stdout] 197 | |                 "".to_string(), port_number, "".to_string()]);
[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] 196 |               let _ = writer.write_record(&[format!("{}", elapsed), format!("{}", id), format!("{}", status_code),
[INFO] [stdout]     |               +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:218:9
[INFO] [stdout]     |
[INFO] [stdout] 218 | /         writer.write_record(&[format!("{}", elapsed), format!("{}", id2), format!("{}", e),
[INFO] [stdout] 219 | |           "".to_string(), "".to_string(), "".to_string()]);
[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] 218 |         let _ = writer.write_record(&[format!("{}", elapsed), format!("{}", id2), format!("{}", e),
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "d12c2148f180526f6dc4cf4d59a69cb9425bc0875bc88d9e78f3a58c2ead0d0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d12c2148f180526f6dc4cf4d59a69cb9425bc0875bc88d9e78f3a58c2ead0d0d", kill_on_drop: false }`
[INFO] [stdout] d12c2148f180526f6dc4cf4d59a69cb9425bc0875bc88d9e78f3a58c2ead0d0d
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d99a860e4ee4f8d2b117a6c23a7fc95da440c27191c007dc1ce59915343a445c
[INFO] running `Command { std: "docker" "start" "-a" "d99a860e4ee4f8d2b117a6c23a7fc95da440c27191c007dc1ce59915343a445c", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: unused import: `header`
[INFO] [stderr]   --> src/main.rs:20:33
[INFO] [stderr]    |
[INFO] [stderr] 20 | use hyper::{Client, Uri, Error, header};
[INFO] [stderr]    |                                 ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(conservative_impl_trait)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:235:21
[INFO] [stderr]     |
[INFO] [stderr] 235 |   type Future = Box<Future<Item = TcpStream, Error = io::Error>>;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 235 |   type Future = Box<dyn Future<Item = TcpStream, Error = io::Error>>;
[INFO] [stderr]     |                     +++
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:136:39
[INFO] [stderr]     |
[INFO] [stderr] 136 |           let port_number = if let Ok(mut port) = frontend_port.try_lock() {
[INFO] [stderr]     |                                       ----^^^^
[INFO] [stderr]     |                                       |
[INFO] [stderr]     |                                       help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:173:39
[INFO] [stderr]     |
[INFO] [stderr] 173 |           let port_number = if let Ok(mut port) = frontend_port.try_lock() {
[INFO] [stderr]     |                                       ----^^^^
[INFO] [stderr]     |                                       |
[INFO] [stderr]     |                                       help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:194:23
[INFO] [stderr]     |
[INFO] [stderr] 194 |             if let Ok(mut port) = frontend_port.try_lock() {
[INFO] [stderr]     |                       ----^^^^
[INFO] [stderr]     |                       |
[INFO] [stderr]     |                       help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `port`
[INFO] [stderr]    --> src/main.rs:194:23
[INFO] [stderr]     |
[INFO] [stderr] 194 |             if let Ok(mut port) = frontend_port.try_lock() {
[INFO] [stderr]     |                       ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_port`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     wtr.write_record(&["time", "client", "status", "instance", "front port", "back port"]);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let _ = wtr.write_record(&["time", "client", "status", "instance", "front port", "back port"]);
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:169:13
[INFO] [stderr]     |
[INFO] [stderr] 169 | /             writer.write_record(&[format!("{}", elapsed), format!("{}", id), format!("{}", status_code),
[INFO] [stderr] 170 | |               format!("{}", backend_id), port_number, format!("{}", backend_connection_port)]);
[INFO] [stderr]     | |______________________________________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 169 |             let _ = writer.write_record(&[format!("{}", elapsed), format!("{}", id), format!("{}", status_code),
[INFO] [stderr]     |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:196:15
[INFO] [stderr]     |
[INFO] [stderr] 196 | /               writer.write_record(&[format!("{}", elapsed), format!("{}", id), format!("{}", status_code),
[INFO] [stderr] 197 | |                 "".to_string(), port_number, "".to_string()]);
[INFO] [stderr]     | |_____________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 196 |               let _ = writer.write_record(&[format!("{}", elapsed), format!("{}", id), format!("{}", status_code),
[INFO] [stderr]     |               +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:218:9
[INFO] [stderr]     |
[INFO] [stderr] 218 | /         writer.write_record(&[format!("{}", elapsed), format!("{}", id2), format!("{}", e),
[INFO] [stderr] 219 | |           "".to_string(), "".to_string(), "".to_string()]);
[INFO] [stderr]     | |__________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 218 |         let _ = writer.write_record(&[format!("{}", elapsed), format!("{}", id2), format!("{}", e),
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `proxy-benchmark` (bin "proxy-benchmark" test) generated 11 warnings (run `cargo fix --bin "proxy-benchmark" -p proxy-benchmark --tests` to apply 6 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/proxy_benchmark-581abe6f27d15038)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d99a860e4ee4f8d2b117a6c23a7fc95da440c27191c007dc1ce59915343a445c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d99a860e4ee4f8d2b117a6c23a7fc95da440c27191c007dc1ce59915343a445c", kill_on_drop: false }`
[INFO] [stdout] d99a860e4ee4f8d2b117a6c23a7fc95da440c27191c007dc1ce59915343a445c
