[INFO] cloning repository https://github.com/quangkeu95/libp2p-learner
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/quangkeu95/libp2p-learner" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquangkeu95%2Flibp2p-learner", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquangkeu95%2Flibp2p-learner'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 58ac4bda892a5c7b83473c1e1d562e3f5cd2bb72
[INFO] building quangkeu95/libp2p-learner against master#d59f06fc64844ec2073e5e888f7470989ef25ff9 for pr-119440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquangkeu95%2Flibp2p-learner" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/quangkeu95/libp2p-learner on toolchain d59f06fc64844ec2073e5e888f7470989ef25ff9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d59f06fc64844ec2073e5e888f7470989ef25ff9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/quangkeu95/libp2p-learner
[INFO] finished tweaking git repo https://github.com/quangkeu95/libp2p-learner
[INFO] tweaked toml for git repo https://github.com/quangkeu95/libp2p-learner written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/quangkeu95/libp2p-learner already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d59f06fc64844ec2073e5e888f7470989ef25ff9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libp2p-core v0.40.1
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d59f06fc64844ec2073e5e888f7470989ef25ff9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cbed41ebc02b51931c5b575c23eb688f60ef4e5fae6e5d8d1fbd3fb5a06ea116
[INFO] running `Command { std: "docker" "start" "-a" "cbed41ebc02b51931c5b575c23eb688f60ef4e5fae6e5d8d1fbd3fb5a06ea116", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbed41ebc02b51931c5b575c23eb688f60ef4e5fae6e5d8d1fbd3fb5a06ea116", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbed41ebc02b51931c5b575c23eb688f60ef4e5fae6e5d8d1fbd3fb5a06ea116", kill_on_drop: false }`
[INFO] [stdout] cbed41ebc02b51931c5b575c23eb688f60ef4e5fae6e5d8d1fbd3fb5a06ea116
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d59f06fc64844ec2073e5e888f7470989ef25ff9" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb4952170ccb32adcdd6649c8b9ca5cbb2d665e2f72fc2c41368b5b2609409c6
[INFO] running `Command { std: "docker" "start" "-a" "cb4952170ccb32adcdd6649c8b9ca5cbb2d665e2f72fc2c41368b5b2609409c6", kill_on_drop: false }`
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[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]    Compiling if-watch v3.1.0
[INFO] [stderr]    Compiling h2 v0.3.21
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling futures-rustls v0.24.0
[INFO] [stderr]    Compiling http-body v0.4.5
[INFO] [stderr]    Compiling yasna v0.5.2
[INFO] [stderr]    Compiling cbor4ii v0.3.1
[INFO] [stderr]    Compiling futures-bounded v0.1.0
[INFO] [stderr]    Compiling inout v0.1.3
[INFO] [stderr]    Compiling prometheus-client-derive-encode v0.4.2
[INFO] [stderr]    Compiling pem v1.1.1
[INFO] [stderr]    Compiling send_wrapper v0.6.0
[INFO] [stderr]    Compiling dtoa v1.0.9
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling matches v0.1.10
[INFO] [stderr]    Compiling tower-service v0.3.2
[INFO] [stderr]    Compiling xml-rs v0.8.19
[INFO] [stderr]    Compiling uint v0.9.5
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling trust-dns-resolver v0.23.2
[INFO] [stderr]    Compiling xmltree v0.10.3
[INFO] [stderr]    Compiling hyper v0.14.27
[INFO] [stderr]    Compiling quinn-proto v0.10.5
[INFO] [stderr]    Compiling rcgen v0.10.0
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling libp2p-request-response v0.25.3
[INFO] [stderr]    Compiling cipher v0.4.4
[INFO] [stderr]    Compiling x509-parser v0.15.1
[INFO] [stderr]    Compiling rayon v1.8.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling lru v0.12.0
[INFO] [stderr]    Compiling attohttpc v0.24.1
[INFO] [stderr]    Compiling quinn-udp v0.4.1
[INFO] [stderr]    Compiling enum-as-inner v0.5.1
[INFO] [stderr]    Compiling futures-ticker v0.0.3
[INFO] [stderr]    Compiling x25519-dalek v2.0.0
[INFO] [stderr]    Compiling web-sys v0.3.64
[INFO] [stderr]    Compiling sha-1 v0.9.8
[INFO] [stderr]    Compiling arrayvec v0.7.4
[INFO] [stderr]    Compiling nohash-hasher v0.2.0
[INFO] [stderr]    Compiling base64 v0.21.5
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling hex_fmt v0.3.0
[INFO] [stderr]    Compiling keccak v0.1.4
[INFO] [stderr]    Compiling pin-project-lite v0.1.12
[INFO] [stderr]    Compiling quicksink v0.1.2
[INFO] [stderr]    Compiling nu-ansi-term v0.46.0
[INFO] [stderr]    Compiling yamux v0.12.0
[INFO] [stderr]    Compiling sysinfo v0.29.10
[INFO] [stderr]    Compiling libp2p-gossipsub v0.45.2
[INFO] [stderr]    Compiling sha3 v0.10.8
[INFO] [stderr]    Compiling trust-dns-proto v0.22.0
[INFO] [stderr]    Compiling libp2p-kad v0.44.6
[INFO] [stderr]    Compiling soketto v0.7.1
[INFO] [stderr]    Compiling libp2p-noise v0.43.2
[INFO] [stderr]    Compiling igd-next v0.14.2
[INFO] [stderr]    Compiling quinn v0.10.2
[INFO] [stderr]    Compiling libp2p-tls v0.2.1
[INFO] [stderr]    Compiling flate2 v1.0.28
[INFO] [stderr]    Compiling libp2p-identify v0.43.1
[INFO] [stderr]    Compiling cuckoofilter v0.5.0
[INFO] [stderr]    Compiling salsa20 v0.10.2
[INFO] [stderr]    Compiling matchers v0.1.0
[INFO] [stderr]    Compiling async-std-resolver v0.23.2
[INFO] [stderr]    Compiling libp2p-relay v0.16.2
[INFO] [stderr]    Compiling libp2p-dcutr v0.10.0
[INFO] [stderr]    Compiling libp2p-ping v0.43.1
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling memory-stats v1.1.0
[INFO] [stderr]    Compiling tracing-log v0.1.4
[INFO] [stderr]    Compiling thread_local v1.1.7
[INFO] [stderr]    Compiling bimap v0.6.3
[INFO] [stderr]    Compiling webpki-roots v0.25.2
[INFO] [stderr]    Compiling tracing-subscriber v0.3.17
[INFO] [stderr]    Compiling libp2p-rendezvous v0.13.1
[INFO] [stderr]    Compiling libp2p-websocket v0.42.1
[INFO] [stderr]    Compiling libp2p-metrics v0.13.1
[INFO] [stderr]    Compiling libp2p-memory-connection-limits v0.1.0
[INFO] [stderr]    Compiling libp2p-dns v0.40.1
[INFO] [stderr]    Compiling libp2p-pnet v0.23.1
[INFO] [stderr]    Compiling libp2p-mdns v0.44.0
[INFO] [stderr]    Compiling libp2p-floodsub v0.43.0
[INFO] [stderr]    Compiling libp2p-deflate v0.40.1
[INFO] [stderr]    Compiling libp2p-quic v0.9.3
[INFO] [stderr]    Compiling libp2p-upnp v0.1.1
[INFO] [stderr]    Compiling libp2p-webtransport-websys v0.1.0
[INFO] [stderr]    Compiling libp2p-yamux v0.44.1
[INFO] [stderr]    Compiling libp2p-websocket-websys v0.2.0
[INFO] [stderr]    Compiling libp2p-autonat v0.11.0
[INFO] [stderr]    Compiling libp2p-wasm-ext v0.40.0
[INFO] [stderr]    Compiling libp2p-tcp v0.40.1
[INFO] [stderr]    Compiling libp2p-connection-limits v0.2.1
[INFO] [stderr]    Compiling libp2p-allow-block-list v0.2.0
[INFO] [stderr]    Compiling libp2p-plaintext v0.40.1
[INFO] [stderr]    Compiling libp2p-uds v0.39.0
[INFO] [stderr]    Compiling libp2p v0.52.4
[INFO] [stderr]    Compiling tracing-error v0.2.0
[INFO] [stderr]    Compiling libp2p-learner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 08s
[INFO] running `Command { std: "docker" "inspect" "cb4952170ccb32adcdd6649c8b9ca5cbb2d665e2f72fc2c41368b5b2609409c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb4952170ccb32adcdd6649c8b9ca5cbb2d665e2f72fc2c41368b5b2609409c6", kill_on_drop: false }`
[INFO] [stdout] cb4952170ccb32adcdd6649c8b9ca5cbb2d665e2f72fc2c41368b5b2609409c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d59f06fc64844ec2073e5e888f7470989ef25ff9" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e87b346978fe0f0b80fb99f515d18fc5916cd8af7e144c512d2652dcbb8662d8
[INFO] running `Command { std: "docker" "start" "-a" "e87b346978fe0f0b80fb99f515d18fc5916cd8af7e144c512d2652dcbb8662d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libp2p-learner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ping`
[INFO] [stdout]  --> examples/chat/main.rs:7:32
[INFO] [stdout]   |
[INFO] [stdout] 7 | use libp2p::{gossipsub, noise, ping, yamux, SwarmBuilder};
[INFO] [stdout]   |                                ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `swarm`
[INFO] [stdout]   --> examples/chat/main.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut swarm = SwarmBuilder::with_new_identity()
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_swarm`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/chat/main.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut swarm = SwarmBuilder::with_new_identity()
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 13.76s
[INFO] running `Command { std: "docker" "inspect" "e87b346978fe0f0b80fb99f515d18fc5916cd8af7e144c512d2652dcbb8662d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e87b346978fe0f0b80fb99f515d18fc5916cd8af7e144c512d2652dcbb8662d8", kill_on_drop: false }`
[INFO] [stdout] e87b346978fe0f0b80fb99f515d18fc5916cd8af7e144c512d2652dcbb8662d8