[INFO] fetching crate libp2p-dns 0.20.0...
[INFO] checking libp2p-dns-0.20.0 against try#353a0a223066e9f46a1d935f2271a26c3c5002bb for pr-75180
[INFO] extracting crate libp2p-dns 0.20.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate libp2p-dns 0.20.0 on toolchain 353a0a223066e9f46a1d935f2271a26c3c5002bb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libp2p-dns 0.20.0
[INFO] finished tweaking crates.io crate libp2p-dns 0.20.0
[INFO] tweaked toml for crates.io crate libp2p-dns 0.20.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "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] c31078be101c83d8dbcc5eec665f44403f1f4507849ed89d57457305fde60c25
[INFO] running `Command { std: "docker" "start" "-a" "c31078be101c83d8dbcc5eec665f44403f1f4507849ed89d57457305fde60c25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c31078be101c83d8dbcc5eec665f44403f1f4507849ed89d57457305fde60c25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c31078be101c83d8dbcc5eec665f44403f1f4507849ed89d57457305fde60c25", kill_on_drop: false }`
[INFO] [stdout] c31078be101c83d8dbcc5eec665f44403f1f4507849ed89d57457305fde60c25
[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" "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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "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] 3069cd946654c5680143022daa567e41bf5c1127efe47cf6d70e33c43b582e7a
[INFO] running `Command { std: "docker" "start" "-a" "3069cd946654c5680143022daa567e41bf5c1127efe47cf6d70e33c43b582e7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking unsigned-varint v0.4.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling prost-build v0.6.1
[INFO] [stderr]     Checking libsecp256k1 v0.3.5
[INFO] [stderr]     Checking blake2s_simd v0.5.10
[INFO] [stderr]     Checking blake2b_simd v0.5.10
[INFO] [stderr]     Checking blake3 v0.3.6
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking multihash v0.11.3
[INFO] [stderr]     Checking parity-multiaddr v0.9.1
[INFO] [stderr]    Compiling libp2p-core v0.20.1
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking rw-stream-sink v0.2.1
[INFO] [stderr]     Checking multistream-select v0.8.2
[INFO] [stderr]     Checking libp2p-dns v0.20.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.75s
[INFO] running `Command { std: "docker" "inspect" "3069cd946654c5680143022daa567e41bf5c1127efe47cf6d70e33c43b582e7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3069cd946654c5680143022daa567e41bf5c1127efe47cf6d70e33c43b582e7a", kill_on_drop: false }`
[INFO] [stdout] 3069cd946654c5680143022daa567e41bf5c1127efe47cf6d70e33c43b582e7a