[INFO] cloning repository https://github.com/hammsvietro/rust_http_server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hammsvietro/rust_http_server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhammsvietro%2Frust_http_server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhammsvietro%2Frust_http_server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 220aed0b33daeb772dff402fc02b3fd766fce1a3
[INFO] checking hammsvietro/rust_http_server against try#3bb2879ea9e58d65b875f9a98df44f4a43ce2597 for pr-85387
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhammsvietro%2Frust_http_server" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hammsvietro/rust_http_server on toolchain 3bb2879ea9e58d65b875f9a98df44f4a43ce2597
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hammsvietro/rust_http_server
[INFO] finished tweaking git repo https://github.com/hammsvietro/rust_http_server
[INFO] tweaked toml for git repo https://github.com/hammsvietro/rust_http_server written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/hammsvietro/rust_http_server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async-executor v1.4.1
[INFO] [stderr]   Downloaded ctor v0.1.20
[INFO] [stderr]   Downloaded lock_api v0.4.3
[INFO] [stderr]   Downloaded redox_syscall v0.2.7
[INFO] [stderr]   Downloaded async-io v1.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c71caeaa6fb0f30aef76220e9371e6925019bda23418180841137d2d6c94f964
[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" "c71caeaa6fb0f30aef76220e9371e6925019bda23418180841137d2d6c94f964", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c71caeaa6fb0f30aef76220e9371e6925019bda23418180841137d2d6c94f964", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c71caeaa6fb0f30aef76220e9371e6925019bda23418180841137d2d6c94f964", kill_on_drop: false }`
[INFO] [stdout] c71caeaa6fb0f30aef76220e9371e6925019bda23418180841137d2d6c94f964
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8da15b1688ca9cfe0de9d1708f2c6d2b18dba48a7617f42b5ae1a595411c7e0d
[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" "8da15b1688ca9cfe0de9d1708f2c6d2b18dba48a7617f42b5ae1a595411c7e0d", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.6
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking futures-io v0.3.14
[INFO] [stderr]     Checking fastrand v1.4.1
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]     Checking lock_api v0.4.3
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]     Checking async-mutex v1.4.0
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[INFO] [stderr]    Compiling quote v1.0.9
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[INFO] [stderr]    Compiling syn v1.0.71
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[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]    Compiling tokio-macros v1.1.0
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[INFO] [stderr]     Checking mio_async v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::http::HttpRequest`
[INFO] [stdout]  --> src/event_loop.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::http::HttpRequest;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/event_loop.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let n = match socket.read(&mut buf).await {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `req`
[INFO] [stdout]   --> src/event_loop.rs:41:22
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn parse_request<'a>(req: &'a str)  {
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_req`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `zas`
[INFO] [stdout]  --> src/http/parser.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn zas() -> &'static str {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `HttpRequest`
[INFO] [stdout]  --> src/http/models.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct HttpRequest<'a> {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_request`
[INFO] [stdout]   --> src/event_loop.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn parse_request<'a>(req: &'a str)  {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     block_on(rt.spawn(async {
[INFO] [stdout] 13 | |         let listener =TcpListener::bind("127.0.0.1:8080").await.unwrap();
[INFO] [stdout] 14 | |         execute_loop(&listener).await
[INFO] [stdout] 15 | |     }));
[INFO] [stdout]    | |________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::http::HttpRequest`
[INFO] [stdout]  --> src/event_loop.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::http::HttpRequest;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/event_loop.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let n = match socket.read(&mut buf).await {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `req`
[INFO] [stdout]   --> src/event_loop.rs:41:22
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn parse_request<'a>(req: &'a str)  {
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_req`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `zas`
[INFO] [stdout]  --> src/http/parser.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn zas() -> &'static str {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `HttpRequest`
[INFO] [stdout]  --> src/http/models.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct HttpRequest<'a> {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_request`
[INFO] [stdout]   --> src/event_loop.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn parse_request<'a>(req: &'a str)  {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     block_on(rt.spawn(async {
[INFO] [stdout] 13 | |         let listener =TcpListener::bind("127.0.0.1:8080").await.unwrap();
[INFO] [stdout] 14 | |         execute_loop(&listener).await
[INFO] [stdout] 15 | |     }));
[INFO] [stdout]    | |________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.05s
[INFO] running `Command { std: "docker" "inspect" "8da15b1688ca9cfe0de9d1708f2c6d2b18dba48a7617f42b5ae1a595411c7e0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8da15b1688ca9cfe0de9d1708f2c6d2b18dba48a7617f42b5ae1a595411c7e0d", kill_on_drop: false }`
[INFO] [stdout] 8da15b1688ca9cfe0de9d1708f2c6d2b18dba48a7617f42b5ae1a595411c7e0d