[INFO] fetching crate libp2p-mdns 0.28.0...
[INFO] checking libp2p-mdns-0.28.0 against master#339e19697a39a78f4d669c217b7d21109215de41 for pr-81213
[INFO] extracting crate libp2p-mdns 0.28.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate libp2p-mdns 0.28.0 on toolchain 339e19697a39a78f4d669c217b7d21109215de41
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libp2p-mdns 0.28.0
[INFO] finished tweaking crates.io crate libp2p-mdns 0.28.0
[INFO] tweaked toml for crates.io crate libp2p-mdns 0.28.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d75e850c38b17efabe6f58371816cf9fa8466956f62871a4b252bb3aa391d618
[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" "d75e850c38b17efabe6f58371816cf9fa8466956f62871a4b252bb3aa391d618", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d75e850c38b17efabe6f58371816cf9fa8466956f62871a4b252bb3aa391d618", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d75e850c38b17efabe6f58371816cf9fa8466956f62871a4b252bb3aa391d618", kill_on_drop: false }`
[INFO] [stdout] d75e850c38b17efabe6f58371816cf9fa8466956f62871a4b252bb3aa391d618
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "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] f0a57f7521bfc7eff46f2ee12948aef17c2c1ebfb4ae602555c311cc3218961f
[INFO] running `Command { std: "docker" "start" "-a" "f0a57f7521bfc7eff46f2ee12948aef17c2c1ebfb4ae602555c311cc3218961f", kill_on_drop: false }`
[INFO] [stderr]     Checking unsigned-varint v0.6.0
[INFO] [stderr]     Checking ipnet v2.3.0
[INFO] [stderr]    Compiling tokio v1.1.0
[INFO] [stderr]     Checking dns-parser v0.8.0
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking polling v2.0.2
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking ring v0.16.19
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]     Checking futures-util v0.3.12
[INFO] [stderr]    Compiling which v4.0.2
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]     Checking libsecp256k1 v0.3.5
[INFO] [stderr]     Checking curve25519-dalek v3.0.2
[INFO] [stderr]     Checking parity-multiaddr v0.11.0
[INFO] [stderr]     Checking async-io v1.3.1
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling prost-build v0.7.0
[INFO] [stderr]     Checking if-watch v0.1.7
[INFO] [stderr]     Checking async-global-executor v2.0.2
[INFO] [stderr]     Checking async-std v1.9.0
[INFO] [stderr]     Checking ed25519-dalek v1.0.1
[INFO] [stderr]    Compiling libp2p-core v0.27.0
[INFO] [stderr]     Checking futures-executor v0.3.12
[INFO] [stderr]     Checking futures v0.3.12
[INFO] [stderr]     Checking multistream-select v0.10.0
[INFO] [stderr]     Checking rw-stream-sink v0.2.1
[INFO] [stderr]     Checking wasm-timer v0.2.5
[INFO] [stderr]     Checking libp2p-swarm v0.27.0
[INFO] [stderr]     Checking libp2p-mdns v0.28.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.22s
[INFO] running `Command { std: "docker" "inspect" "f0a57f7521bfc7eff46f2ee12948aef17c2c1ebfb4ae602555c311cc3218961f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0a57f7521bfc7eff46f2ee12948aef17c2c1ebfb4ae602555c311cc3218961f", kill_on_drop: false }`
[INFO] [stdout] f0a57f7521bfc7eff46f2ee12948aef17c2c1ebfb4ae602555c311cc3218961f