[INFO] fetching crate dns-resolver 0.2.6...
[INFO] checking dns-resolver-0.2.6 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate dns-resolver 0.2.6 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate dns-resolver 0.2.6 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dns-resolver 0.2.6
[INFO] finished tweaking crates.io crate dns-resolver 0.2.6
[INFO] tweaked toml for crates.io crate dns-resolver 0.2.6 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate dns-resolver 0.2.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded awak v0.2.9
[INFO] [stderr]   Downloaded domain v0.6.1
[INFO] [stderr]   Downloaded slings v0.3.0
[INFO] [stderr]   Downloaded io-uring v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f97bb928b8bf3b4cb973f733435d7bf4fe2666c55fb912e41f4e3529ce1c35ab
[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" "f97bb928b8bf3b4cb973f733435d7bf4fe2666c55fb912e41f4e3529ce1c35ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f97bb928b8bf3b4cb973f733435d7bf4fe2666c55fb912e41f4e3529ce1c35ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f97bb928b8bf3b4cb973f733435d7bf4fe2666c55fb912e41f4e3529ce1c35ab", kill_on_drop: false }`
[INFO] [stdout] f97bb928b8bf3b4cb973f733435d7bf4fe2666c55fb912e41f4e3529ce1c35ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2a6f610c96db4180f482b878add014f68770e5220acb150ecd9843f964a4aaed
[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" "2a6f610c96db4180f482b878add014f68770e5220acb150ecd9843f964a4aaed", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling io-uring v0.5.1
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking resolv-conf v0.7.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking domain v0.6.1
[INFO] [stderr]     Checking slings v0.3.0
[INFO] [stderr]     Checking dns-resolver v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `dns_resolver::Resolver`
[INFO] [stdout]  --> examples/awak.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use dns_resolver::Resolver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> examples/awak.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.37s
[INFO] running `Command { std: "docker" "inspect" "2a6f610c96db4180f482b878add014f68770e5220acb150ecd9843f964a4aaed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a6f610c96db4180f482b878add014f68770e5220acb150ecd9843f964a4aaed", kill_on_drop: false }`
[INFO] [stdout] 2a6f610c96db4180f482b878add014f68770e5220acb150ecd9843f964a4aaed