[INFO] cloning repository https://github.com/mitmproxy/proxybench
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mitmproxy/proxybench" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmitmproxy%2Fproxybench", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmitmproxy%2Fproxybench'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] afef5898d14d1f64d235a892d31587fe21c2d827
[INFO] checking mitmproxy/proxybench against master#406e03fd02faf5cc8409a8b6b04c26990d6227e6 for pr-101437
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmitmproxy%2Fproxybench" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mitmproxy/proxybench on toolchain 406e03fd02faf5cc8409a8b6b04c26990d6227e6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+406e03fd02faf5cc8409a8b6b04c26990d6227e6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mitmproxy/proxybench
[INFO] finished tweaking git repo https://github.com/mitmproxy/proxybench
[INFO] tweaked toml for git repo https://github.com/mitmproxy/proxybench written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/mitmproxy/proxybench already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+406e03fd02faf5cc8409a8b6b04c26990d6227e6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing v0.1.24
[INFO] [stderr]   Downloaded rcgen v0.8.9
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+406e03fd02faf5cc8409a8b6b04c26990d6227e6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 03aacecba9ee0c7351566f01e077cfe82e99f6640df517e733094194fd47f876
[INFO] running `Command { std: "docker" "start" "-a" "03aacecba9ee0c7351566f01e077cfe82e99f6640df517e733094194fd47f876", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03aacecba9ee0c7351566f01e077cfe82e99f6640df517e733094194fd47f876", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03aacecba9ee0c7351566f01e077cfe82e99f6640df517e733094194fd47f876", kill_on_drop: false }`
[INFO] [stdout] 03aacecba9ee0c7351566f01e077cfe82e99f6640df517e733094194fd47f876
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+406e03fd02faf5cc8409a8b6b04c26990d6227e6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3534403792a68cf671a8edae48ee6b940fef88614a45b5a6077ab7018516c00
[INFO] running `Command { std: "docker" "start" "-a" "f3534403792a68cf671a8edae48ee6b940fef88614a45b5a6077ab7018516c00", kill_on_drop: false }`
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[INFO] [stderr]     Checking proxybench v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> benches/proxybench.rs:80:31
[INFO] [stdout]    |
[INFO] [stdout] 80 |                     Err(e) => (println!("erroring! {}", e)),
[INFO] [stdout]    |                               ^                           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 80 -                     Err(e) => (println!("erroring! {}", e)),
[INFO] [stdout] 80 +                     Err(e) => println!("erroring! {}", e),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.71s
[INFO] running `Command { std: "docker" "inspect" "f3534403792a68cf671a8edae48ee6b940fef88614a45b5a6077ab7018516c00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3534403792a68cf671a8edae48ee6b940fef88614a45b5a6077ab7018516c00", kill_on_drop: false }`
[INFO] [stdout] f3534403792a68cf671a8edae48ee6b940fef88614a45b5a6077ab7018516c00