[INFO] updating cached repository https://github.com/burnt43/simple_rust_webserver
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ed0bd650742717041ac457be0415c45966f599ab
[INFO] checking burnt43/simple_rust_webserver against master#e1beee4992ad4b235fc700bf7af1ee86f894ea53 for pr-74130
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fburnt43%2Fsimple_rust_webserver" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/burnt43/simple_rust_webserver on toolchain e1beee4992ad4b235fc700bf7af1ee86f894ea53
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/burnt43/simple_rust_webserver
[INFO] finished tweaking git repo https://github.com/burnt43/simple_rust_webserver
[INFO] tweaked toml for git repo https://github.com/burnt43/simple_rust_webserver written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/burnt43/simple_rust_webserver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-6/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "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] 5580d917af4d87bf8010bf80e206b3cf68da4437d8419e9dd7d5b89466649b10
[INFO] running `Command { std: "docker" "start" "-a" "5580d917af4d87bf8010bf80e206b3cf68da4437d8419e9dd7d5b89466649b10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5580d917af4d87bf8010bf80e206b3cf68da4437d8419e9dd7d5b89466649b10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5580d917af4d87bf8010bf80e206b3cf68da4437d8419e9dd7d5b89466649b10", kill_on_drop: false }`
[INFO] [stdout] 5580d917af4d87bf8010bf80e206b3cf68da4437d8419e9dd7d5b89466649b10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "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] 252f0d92514db6e7f28a39f6909e9b9e9269d35be4a0872180c9bff7fad8ff34
[INFO] running `Command { std: "docker" "start" "-a" "252f0d92514db6e7f28a39f6909e9b9e9269d35be4a0872180c9bff7fad8ff34", kill_on_drop: false }`
[INFO] [stderr]     Checking simple_rust_webserver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `http_version`
[INFO] [stdout]    --> src/main.rs:178:37
[INFO] [stdout]     |
[INFO] [stdout] 178 |             ( Some(http_verb), Some(http_version), Some(request_path) ) => {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_http_version`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `http_options`
[INFO] [stdout]   --> src/main.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn http_options (&mut self, pair: (HttpOption,String)) -> &mut HttpResponseBuilder {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `http_version`
[INFO] [stdout]    --> src/main.rs:178:37
[INFO] [stdout]     |
[INFO] [stdout] 178 |             ( Some(http_verb), Some(http_version), Some(request_path) ) => {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_http_version`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `http_options`
[INFO] [stdout]   --> src/main.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn http_options (&mut self, pair: (HttpOption,String)) -> &mut HttpResponseBuilder {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "252f0d92514db6e7f28a39f6909e9b9e9269d35be4a0872180c9bff7fad8ff34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "252f0d92514db6e7f28a39f6909e9b9e9269d35be4a0872180c9bff7fad8ff34", kill_on_drop: false }`
[INFO] [stdout] 252f0d92514db6e7f28a39f6909e9b9e9269d35be4a0872180c9bff7fad8ff34