[INFO] cloning repository https://github.com/total70/rust-webserver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/total70/rust-webserver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftotal70%2Frust-webserver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftotal70%2Frust-webserver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bb05a90c61818200e0b335863fef8bd358b5a39e
[INFO] checking total70/rust-webserver against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftotal70%2Frust-webserver" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/total70/rust-webserver on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/total70/rust-webserver
[INFO] finished tweaking git repo https://github.com/total70/rust-webserver
[INFO] tweaked toml for git repo https://github.com/total70/rust-webserver written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/total70/rust-webserver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 17c8b806df4cac630e2a5891c8b5872f90fa8781b2920469d83b6ffabcc8bfdc
[INFO] running `Command { std: "docker" "start" "-a" "17c8b806df4cac630e2a5891c8b5872f90fa8781b2920469d83b6ffabcc8bfdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17c8b806df4cac630e2a5891c8b5872f90fa8781b2920469d83b6ffabcc8bfdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17c8b806df4cac630e2a5891c8b5872f90fa8781b2920469d83b6ffabcc8bfdc", kill_on_drop: false }`
[INFO] [stdout] 17c8b806df4cac630e2a5891c8b5872f90fa8781b2920469d83b6ffabcc8bfdc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 516a5b181237d4a67111266f3ca7d1cb365418ecf030ceeea284727c074dc646
[INFO] running `Command { std: "docker" "start" "-a" "516a5b181237d4a67111266f3ca7d1cb365418ecf030ceeea284727c074dc646", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.83
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]     Checking futures-core v0.3.12
[INFO] [stderr]     Checking futures-sink v0.3.12
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]     Checking futures-io v0.3.12
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling tokio v1.1.0
[INFO] [stderr]     Checking futures-task v0.3.12
[INFO] [stderr]     Checking tinyvec v1.1.1
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking http-body v0.4.0
[INFO] [stderr]     Checking headers-core v0.2.0
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking futures-channel v0.3.12
[INFO] [stderr]     Checking futures-util v0.3.12
[INFO] [stderr]     Checking tracing v0.1.22
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking mio v0.7.7
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking headers v0.3.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]     Checking futures v0.3.12
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking multipart v0.17.1
[INFO] [stderr]     Checking tungstenite v0.12.0
[INFO] [stderr]    Compiling tokio-macros v1.0.0
[INFO] [stderr]    Compiling async-stream-impl v0.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling pin-project-internal v1.0.4
[INFO] [stderr]     Checking async-stream v0.3.0
[INFO] [stderr]     Checking pin-project v1.0.4
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking tokio-stream v0.1.2
[INFO] [stderr]     Checking tokio-tungstenite v0.13.0
[INFO] [stderr]     Checking tokio-util v0.6.2
[INFO] [stderr]     Checking serde v1.0.123
[INFO] [stderr]     Checking h2 v0.3.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking serde_json v1.0.61
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking hyper v0.14.2
[INFO] [stderr]     Checking warp v0.3.0
[INFO] [stderr]     Checking rust-webserver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `client_ws_rcv`
[INFO] [stdout]  --> src/websocket/connection.rs:7:26
[INFO] [stdout]   |
[INFO] [stdout] 7 |   let (client_ws_sender, client_ws_rcv) = ws.split();
[INFO] [stdout]   |                          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_client_ws_rcv`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `client_ws_rcv`
[INFO] [stdout]  --> src/websocket/connection.rs:7:26
[INFO] [stdout]   |
[INFO] [stdout] 7 |   let (client_ws_sender, client_ws_rcv) = ws.split();
[INFO] [stdout]   |                          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_client_ws_rcv`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.34s
[INFO] running `Command { std: "docker" "inspect" "516a5b181237d4a67111266f3ca7d1cb365418ecf030ceeea284727c074dc646", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "516a5b181237d4a67111266f3ca7d1cb365418ecf030ceeea284727c074dc646", kill_on_drop: false }`
[INFO] [stdout] 516a5b181237d4a67111266f3ca7d1cb365418ecf030ceeea284727c074dc646