[INFO] updating cached repository https://github.com/Tristan1075/crawler_rust
[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] ae3867f8657382412be5f6b2b5222ceb77812a8b
[INFO] checking Tristan1075/crawler_rust against try#3ae4c050387df9f7fbb379ee90ce8bf05e566870 for pr-70872
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTristan1075%2Fcrawler_rust" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Tristan1075/crawler_rust on toolchain 3ae4c050387df9f7fbb379ee90ce8bf05e566870
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3ae4c050387df9f7fbb379ee90ce8bf05e566870" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Tristan1075/crawler_rust
[INFO] finished tweaking git repo https://github.com/Tristan1075/crawler_rust
[INFO] tweaked toml for git repo https://github.com/Tristan1075/crawler_rust written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/Tristan1075/crawler_rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3ae4c050387df9f7fbb379ee90ce8bf05e566870" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "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" "+3ae4c050387df9f7fbb379ee90ce8bf05e566870" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c7d06cc2507c66cd25b9dace703214a5bc2794308fe40f692f4b058fe3f8cc3d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "c7d06cc2507c66cd25b9dace703214a5bc2794308fe40f692f4b058fe3f8cc3d"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking unicode-segmentation v0.1.2
[INFO] [stderr]     Checking ego-tree v0.1.1
[INFO] [stderr]     Checking itertools v0.4.19
[INFO] [stderr]     Checking io v0.0.2
[INFO] [stderr]    Compiling curl-sys v0.4.25
[INFO] [stderr]     Checking async-task v1.3.0
[INFO] [stderr]    Compiling strcursor v0.2.5
[INFO] [stderr]    Compiling scan-rules v0.1.3
[INFO] [stderr]     Checking cssparser v0.5.8
[INFO] [stderr]     Checking quickersort v2.2.0
[INFO] [stderr]    Compiling string_cache v0.2.29
[INFO] [stderr]    Compiling html5ever v0.5.4
[INFO] [stderr]     Checking markup5ever v0.10.0
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking async-std v1.4.0
[INFO] [stderr]     Checking selectors v0.5.9
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking html5ever v0.25.1
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking scraper v0.4.0
[INFO] [stderr]    Compiling curl v0.4.25
[INFO] [stderr]    Compiling isahc v0.7.6
[INFO] [stderr]     Checking surf v1.0.3
[INFO] [stderr]     Checking rust_crawler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:116:7
[INFO] [stderr]     |
[INFO] [stderr] 116 |       box_crawl(Url::parse(&url).unwrap(), 1, 5).await;
[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: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:116:7
[INFO] [stderr]     |
[INFO] [stderr] 116 |       box_crawl(Url::parse(&url).unwrap(), 1, 5).await;
[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]     Finished dev [unoptimized + debuginfo] target(s) in 40.67s
[INFO] running `"docker" "inspect" "c7d06cc2507c66cd25b9dace703214a5bc2794308fe40f692f4b058fe3f8cc3d"`
[INFO] running `"docker" "rm" "-f" "c7d06cc2507c66cd25b9dace703214a5bc2794308fe40f692f4b058fe3f8cc3d"`
[INFO] [stdout] c7d06cc2507c66cd25b9dace703214a5bc2794308fe40f692f4b058fe3f8cc3d