[INFO] cloning repository https://github.com/jmcph4/rust-libp2p-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jmcph4/rust-libp2p-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmcph4%2Frust-libp2p-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmcph4%2Frust-libp2p-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a68a1af37d302476040a5faf607ffb784b250cb5
[INFO] building jmcph4/rust-libp2p-playground against try#2cd6942e35a7765b6869d3a149ca54f2598b77ad for pr-93180
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmcph4%2Frust-libp2p-playground" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jmcph4/rust-libp2p-playground on toolchain 2cd6942e35a7765b6869d3a149ca54f2598b77ad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2cd6942e35a7765b6869d3a149ca54f2598b77ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jmcph4/rust-libp2p-playground
[INFO] finished tweaking git repo https://github.com/jmcph4/rust-libp2p-playground
[INFO] tweaked toml for git repo https://github.com/jmcph4/rust-libp2p-playground written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/jmcph4/rust-libp2p-playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2cd6942e35a7765b6869d3a149ca54f2598b77ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prost-types v0.7.0
[INFO] [stderr]   Downloaded zeroize_derive v1.1.0
[INFO] [stderr]   Downloaded proc-macro-crate v1.0.0
[INFO] [stderr]   Downloaded asn1_der v0.7.4
[INFO] [stderr]   Downloaded if-addrs v0.6.5
[INFO] [stderr]   Downloaded minicbor v0.8.1
[INFO] [stderr]   Downloaded libp2p-noise v0.31.0
[INFO] [stderr]   Downloaded polyval v0.5.1
[INFO] [stderr]   Downloaded ghash v0.4.2
[INFO] [stderr]   Downloaded libp2p-gossipsub v0.31.0
[INFO] [stderr]   Downloaded libp2p-identify v0.29.0
[INFO] [stderr]   Downloaded quicksink v0.1.2
[INFO] [stderr]   Downloaded subtle v2.4.0
[INFO] [stderr]   Downloaded hex_fmt v0.3.0
[INFO] [stderr]   Downloaded async-std-resolver v0.20.3
[INFO] [stderr]   Downloaded chacha20poly1305 v0.8.0
[INFO] [stderr]   Downloaded chacha20 v0.7.1
[INFO] [stderr]   Downloaded futures-rustls v0.21.1
[INFO] [stderr]   Downloaded libp2p-deflate v0.28.0
[INFO] [stderr]   Downloaded aes v0.7.4
[INFO] [stderr]   Downloaded libp2p-floodsub v0.29.0
[INFO] [stderr]   Downloaded libp2p v0.38.0
[INFO] [stderr]   Downloaded libp2p-mdns v0.30.2
[INFO] [stderr]   Downloaded aes-gcm v0.9.2
[INFO] [stderr]   Downloaded curve25519-dalek v3.1.0
[INFO] [stderr]   Downloaded aead v0.4.1
[INFO] [stderr]   Downloaded salsa20 v0.8.0
[INFO] [stderr]   Downloaded libp2p-pnet v0.21.0
[INFO] [stderr]   Downloaded minicbor-derive v0.6.3
[INFO] [stderr]   Downloaded libp2p-request-response v0.11.0
[INFO] [stderr]   Downloaded libp2p-websocket v0.29.0
[INFO] [stderr]   Downloaded libp2p-dns v0.28.1
[INFO] [stderr]   Downloaded ctr v0.7.0
[INFO] [stderr]   Downloaded async-std v1.9.0
[INFO] [stderr]   Downloaded soketto v0.4.2
[INFO] [stderr]   Downloaded prost-build v0.7.0
[INFO] [stderr]   Downloaded x25519-dalek v1.1.1
[INFO] [stderr]   Downloaded dns-parser v0.8.0
[INFO] [stderr]   Downloaded if-watch v0.2.2
[INFO] [stderr]   Downloaded parity-send-wrapper v0.1.0
[INFO] [stderr]   Downloaded prost v0.7.0
[INFO] [stderr]   Downloaded prost-derive v0.7.0
[INFO] [stderr]   Downloaded libp2p-kad v0.30.0
[INFO] [stderr]   Downloaded libp2p-mplex v0.28.0
[INFO] [stderr]   Downloaded blake2 v0.9.1
[INFO] [stderr]   Downloaded poly1305 v0.7.0
[INFO] [stderr]   Downloaded libp2p-ping v0.29.0
[INFO] [stderr]   Downloaded libp2p-plaintext v0.28.0
[INFO] [stderr]   Downloaded libp2p-relay v0.2.0
[INFO] [stderr]   Downloaded lru v0.6.5
[INFO] [stderr]   Downloaded libp2p-swarm v0.29.0
[INFO] [stderr]   Downloaded libp2p-swarm-derive v0.23.0
[INFO] [stderr]   Downloaded libp2p-tcp v0.28.0
[INFO] [stderr]   Downloaded fastrand v1.4.1
[INFO] [stderr]   Downloaded libp2p-uds v0.28.0
[INFO] [stderr]   Downloaded libp2p-wasm-ext v0.28.2
[INFO] [stderr]   Downloaded ed25519 v1.1.1
[INFO] [stderr]   Downloaded multistream-select v0.10.2
[INFO] [stderr]   Downloaded libp2p-core v0.28.3
[INFO] [stderr]   Downloaded libp2p-yamux v0.32.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+2cd6942e35a7765b6869d3a149ca54f2598b77ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48a9327a3c03c352d8461c4ceb9d8d086a049ce70dd872f8712be91818e2154e
[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" "48a9327a3c03c352d8461c4ceb9d8d086a049ce70dd872f8712be91818e2154e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48a9327a3c03c352d8461c4ceb9d8d086a049ce70dd872f8712be91818e2154e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48a9327a3c03c352d8461c4ceb9d8d086a049ce70dd872f8712be91818e2154e", kill_on_drop: false }`
[INFO] [stdout] 48a9327a3c03c352d8461c4ceb9d8d086a049ce70dd872f8712be91818e2154e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+2cd6942e35a7765b6869d3a149ca54f2598b77ad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a56952221fad697a674fc1df262ad9d1d925319ff3f831540692739c1a81520
[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" "8a56952221fad697a674fc1df262ad9d1d925319ff3f831540692739c1a81520", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling futures-io v0.3.15
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling block-padding v0.2.1
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.28
[INFO] [stderr]    Compiling signature v1.3.1
[INFO] [stderr]    Compiling arrayref v0.3.6
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling asn1_der v0.7.4
[INFO] [stderr]    Compiling cache-padded v1.1.1
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling fastrand v1.4.1
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling keccak v0.1.0
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling os_str_bytes v2.4.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.7
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling tinyvec v1.2.0
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling ed25519 v1.1.1
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling atomic v0.5.0
[INFO] [stderr]    Compiling textwrap v0.12.1
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling lru v0.6.5
[INFO] [stderr]    Compiling uint v0.9.1
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling async-channel v1.6.1
[INFO] [stderr]    Compiling quicksink v0.1.2
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling cipher v0.3.0
[INFO] [stderr]    Compiling universal-hash v0.4.0
[INFO] [stderr]    Compiling aead v0.4.1
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling blake2 v0.9.1
[INFO] [stderr]    Compiling sha2 v0.9.5
[INFO] [stderr]    Compiling sha-1 v0.9.6
[INFO] [stderr]    Compiling sha3 v0.9.1
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]    Compiling ctr v0.7.0
[INFO] [stderr]    Compiling aes v0.7.4
[INFO] [stderr]    Compiling salsa20 v0.8.0
[INFO] [stderr]    Compiling polyval v0.5.1
[INFO] [stderr]    Compiling poly1305 v0.7.0
[INFO] [stderr]    Compiling hmac-drbg v0.2.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling which v4.1.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling socket2 v0.4.0
[INFO] [stderr]    Compiling hostname v0.3.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling ghash v0.4.2
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr]    Compiling async-executor v1.4.1
[INFO] [stderr]    Compiling resolv-conf v0.7.0
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling prost-build v0.7.0
[INFO] [stderr]    Compiling aes-gcm v0.9.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling flate2 v1.0.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling snow v0.8.0
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling libsecp256k1 v0.3.5
[INFO] [stderr]    Compiling cuckoofilter v0.5.0
[INFO] [stderr]    Compiling webpki v0.21.4
[INFO] [stderr]    Compiling sct v0.6.1
[INFO] [stderr]    Compiling webpki-roots v0.21.1
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]    Compiling prost-derive v0.7.0
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling zeroize_derive v1.1.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]    Compiling enum-as-inner v0.3.3
[INFO] [stderr]    Compiling minicbor-derive v0.6.3
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]    Compiling libp2p-swarm-derive v0.23.0
[INFO] [stderr]    Compiling zeroize v1.3.0
[INFO] [stderr]    Compiling curve25519-dalek v3.1.0
[INFO] [stderr]    Compiling chacha20 v0.7.1
[INFO] [stderr]    Compiling chacha20poly1305 v0.8.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling x25519-dalek v1.1.1
[INFO] [stderr]    Compiling polling v2.1.0
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.74
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling rustls v0.19.1
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr] error: could not compile `serde_derive`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde_derive /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_derive-1.0.126/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' -C metadata=1a1657e70bf2eaf5 -C extra-filename=-1a1657e70bf2eaf5 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-84e45d9fd12cc146.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-00ff3cc53bb9440b.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-55c82f4d21ad4629.rlib --extern proc_macro --cap-lints allow --cap-lints=forbid --cfg underscore_consts` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "8a56952221fad697a674fc1df262ad9d1d925319ff3f831540692739c1a81520", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a56952221fad697a674fc1df262ad9d1d925319ff3f831540692739c1a81520", kill_on_drop: false }`
[INFO] [stdout] 8a56952221fad697a674fc1df262ad9d1d925319ff3f831540692739c1a81520