[INFO] cloning repository https://github.com/sdttttt/rust-web-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sdttttt/rust-web-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdttttt%2Frust-web-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdttttt%2Frust-web-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6da6b7d22e53f813f2257e7abf2ec09dd5812e79
[INFO] checking sdttttt/rust-web-server against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdttttt%2Frust-web-server" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sdttttt/rust-web-server on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sdttttt/rust-web-server
[INFO] finished tweaking git repo https://github.com/sdttttt/rust-web-server
[INFO] tweaked toml for git repo https://github.com/sdttttt/rust-web-server written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/sdttttt/rust-web-server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e4789a813b5d873d3df07c3ce980375c9fd03e0ed5e4567ca9af677110ba88d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7e4789a813b5d873d3df07c3ce980375c9fd03e0ed5e4567ca9af677110ba88d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e4789a813b5d873d3df07c3ce980375c9fd03e0ed5e4567ca9af677110ba88d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e4789a813b5d873d3df07c3ce980375c9fd03e0ed5e4567ca9af677110ba88d", kill_on_drop: false }`
[INFO] [stdout] 7e4789a813b5d873d3df07c3ce980375c9fd03e0ed5e4567ca9af677110ba88d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28cb01d74b1e6d05cfba5c9a7161ace61fc51714a006fc616fa0ac3f7679ca44
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "28cb01d74b1e6d05cfba5c9a7161ace61fc51714a006fc616fa0ac3f7679ca44", kill_on_drop: false }`
[INFO] [stderr]     Checking webserver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `workers`
[INFO] [stdout]   --> src/lib.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         workers: Vec<Worker>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]   --> src/lib.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         id: usize,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `thread`
[INFO] [stdout]   --> src/lib.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         thread: thread::JoinHandle<()>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `workers`
[INFO] [stdout]   --> src/lib.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         workers: Vec<Worker>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]   --> src/lib.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         id: usize,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `thread`
[INFO] [stdout]   --> src/lib.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         thread: thread::JoinHandle<()>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `MultiThreading` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod MultiThreading {
[INFO] [stdout]   |         ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `multi_threading`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `MultiThreading` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod MultiThreading {
[INFO] [stdout]   |         ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `multi_threading`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "28cb01d74b1e6d05cfba5c9a7161ace61fc51714a006fc616fa0ac3f7679ca44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28cb01d74b1e6d05cfba5c9a7161ace61fc51714a006fc616fa0ac3f7679ca44", kill_on_drop: false }`
[INFO] [stdout] 28cb01d74b1e6d05cfba5c9a7161ace61fc51714a006fc616fa0ac3f7679ca44