[INFO] updating cached repository https://github.com/PritiKumr/rust-httpd
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 19e180be3194e22eb68cc6b3235aec295777419b
[INFO] checking PritiKumr/rust-httpd against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPritiKumr%2Frust-httpd" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PritiKumr/rust-httpd 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/PritiKumr/rust-httpd
[INFO] finished tweaking git repo https://github.com/PritiKumr/rust-httpd
[INFO] tweaked toml for git repo https://github.com/PritiKumr/rust-httpd written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/PritiKumr/rust-httpd 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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 05b209ee9cb793e4de50bf611bef6d7d7e49eff68473b05e635053798914962c
[INFO] running `"docker" "start" "-a" "05b209ee9cb793e4de50bf611bef6d7d7e49eff68473b05e635053798914962c"`
[INFO] [stderr]     Checking httparse v1.2.1
[INFO] [stderr]     Checking rust-httpd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/main.rs:83:10
[INFO] [stderr]    |
[INFO] [stderr] 83 |     for (i, &item) in request.headers.iter().enumerate() {
[INFO] [stderr]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `body_length`
[INFO] [stderr]    --> src/main.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |     let body_length: u32 = match req
[INFO] [stderr]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_body_length`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/main.rs:83:10
[INFO] [stderr]    |
[INFO] [stderr] 83 |     for (i, &item) in request.headers.iter().enumerate() {
[INFO] [stderr]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `body_length`
[INFO] [stderr]    --> src/main.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |     let body_length: u32 = match req
[INFO] [stderr]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_body_length`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:171:19
[INFO] [stderr]     |
[INFO] [stderr] 171 | fn handle_request(mut stream: TcpStream, client_addr: SocketAddr) {
[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:171:19
[INFO] [stderr]     |
[INFO] [stderr] 171 | fn handle_request(mut stream: TcpStream, client_addr: SocketAddr) {
[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: function is never used: `request_url`
[INFO] [stderr]    --> src/main.rs:139:4
[INFO] [stderr]     |
[INFO] [stderr] 139 | fn request_url(buffer: &[u8]) -> Option<&str> {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:175:5
[INFO] [stderr]     |
[INFO] [stderr] 175 |     req.parse(&request_bytes);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `request_url`
[INFO] [stderr]    --> src/main.rs:139:4
[INFO] [stderr]     |
[INFO] [stderr] 139 | fn request_url(buffer: &[u8]) -> Option<&str> {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:175:5
[INFO] [stderr]     |
[INFO] [stderr] 175 |     req.parse(&request_bytes);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `"docker" "inspect" "05b209ee9cb793e4de50bf611bef6d7d7e49eff68473b05e635053798914962c"`
[INFO] running `"docker" "rm" "-f" "05b209ee9cb793e4de50bf611bef6d7d7e49eff68473b05e635053798914962c"`
[INFO] [stdout] 05b209ee9cb793e4de50bf611bef6d7d7e49eff68473b05e635053798914962c