[INFO] fetching crate webrtc-mdns 0.2.4...
[INFO] checking webrtc-mdns-0.2.4 against try#99a443d6903f71d521237d8acb5a3016b534d17b for pr-83354
[INFO] extracting crate webrtc-mdns 0.2.4 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate webrtc-mdns 0.2.4 on toolchain 99a443d6903f71d521237d8acb5a3016b534d17b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate webrtc-mdns 0.2.4
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate webrtc-mdns 0.2.4
[INFO] tweaked toml for crates.io crate webrtc-mdns 0.2.4 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate webrtc-mdns 0.2.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77427265a6ed4d5327ded64034f77d80489f66d1f1721a56fd34a54e74d91ead
[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" "77427265a6ed4d5327ded64034f77d80489f66d1f1721a56fd34a54e74d91ead", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77427265a6ed4d5327ded64034f77d80489f66d1f1721a56fd34a54e74d91ead", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77427265a6ed4d5327ded64034f77d80489f66d1f1721a56fd34a54e74d91ead", kill_on_drop: false }`
[INFO] [stdout] 77427265a6ed4d5327ded64034f77d80489f66d1f1721a56fd34a54e74d91ead
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "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] 652e84a76cc4c88743e03b44055a82f4b6139df7781331a8db78522d20c38fb6
[INFO] running `Command { std: "docker" "start" "-a" "652e84a76cc4c88743e03b44055a82f4b6139df7781331a8db78522d20c38fb6", kill_on_drop: false }`
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]    Compiling num-bigint v0.3.2
[INFO] [stderr]    Compiling tokio v1.3.0
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking aead v0.3.2
[INFO] [stderr]     Checking ring v0.16.20
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking pem v0.8.3
[INFO] [stderr]     Checking ff v0.8.0
[INFO] [stderr]     Checking universal-hash v0.4.0
[INFO] [stderr]     Checking crypto-mac v0.10.0
[INFO] [stderr]     Checking mio v0.7.10
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking group v0.8.0
[INFO] [stderr]     Checking hmac v0.10.1
[INFO] [stderr]     Checking polyval v0.4.5
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking elliptic-curve v0.8.5
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking ghash v0.3.1
[INFO] [stderr]     Checking aes-gcm v0.8.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking ecdsa v0.10.2
[INFO] [stderr]     Checking p256 v0.7.2
[INFO] [stderr]     Checking yasna v0.3.2
[INFO] [stderr]     Checking rcgen v0.8.9
[INFO] [stderr]    Compiling der-oid-macro v0.3.0
[INFO] [stderr]     Checking der-parser v5.0.1
[INFO] [stderr]     Checking ctrlc v3.1.8
[INFO] [stderr]     Checking oid-registry v0.1.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling async-trait v0.1.48
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking x509-parser v0.9.1
[INFO] [stderr]     Checking webrtc-util v0.1.7
[INFO] [stderr]     Checking webrtc-mdns v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.93s
[INFO] running `Command { std: "docker" "inspect" "652e84a76cc4c88743e03b44055a82f4b6139df7781331a8db78522d20c38fb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "652e84a76cc4c88743e03b44055a82f4b6139df7781331a8db78522d20c38fb6", kill_on_drop: false }`
[INFO] [stdout] 652e84a76cc4c88743e03b44055a82f4b6139df7781331a8db78522d20c38fb6