[INFO] fetching crate exocore-transport 0.1.1...
[INFO] checking exocore-transport-0.1.1 against master#6526e5c772f2da07db745c94ca6bb0a591a39ba4 for pr-80920
[INFO] extracting crate exocore-transport 0.1.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate exocore-transport 0.1.1 on toolchain 6526e5c772f2da07db745c94ca6bb0a591a39ba4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate exocore-transport 0.1.1
[INFO] finished tweaking crates.io crate exocore-transport 0.1.1
[INFO] tweaked toml for crates.io crate exocore-transport 0.1.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d255b8f4fc57cf27dcb7d32fa483181da8068e6a13bb28fb0b0e73de68ce3584
[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" "d255b8f4fc57cf27dcb7d32fa483181da8068e6a13bb28fb0b0e73de68ce3584", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d255b8f4fc57cf27dcb7d32fa483181da8068e6a13bb28fb0b0e73de68ce3584", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d255b8f4fc57cf27dcb7d32fa483181da8068e6a13bb28fb0b0e73de68ce3584", kill_on_drop: false }`
[INFO] [stdout] d255b8f4fc57cf27dcb7d32fa483181da8068e6a13bb28fb0b0e73de68ce3584
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "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] 364fa2fde5884cfda55355e6499fc4452ac629e0626111d89477be7c9f9098d7
[INFO] running `Command { std: "docker" "start" "-a" "364fa2fde5884cfda55355e6499fc4452ac629e0626111d89477be7c9f9098d7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling typenum v1.12.0
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[INFO] [stderr]    Compiling indexmap v1.6.1
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[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling prost-build v0.6.1
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_core v0.6.1
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[INFO] [stderr]    Compiling capnpc v0.14.2
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[INFO] [stderr]    Compiling petgraph v0.5.1
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[INFO] [stderr]     Checking petname v1.0.13
[INFO] [stderr]     Checking stream-cipher v0.7.1
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[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.119
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[INFO] [stderr]    Compiling prost-derive v0.6.1
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[INFO] [stderr]    Compiling zeroize_derive v1.0.1
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[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling asn1_der_derive v0.1.2
[INFO] [stderr]    Compiling tokio-macros v0.3.2
[INFO] [stderr]    Compiling derivative v2.1.3
[INFO] [stderr]    Compiling libp2p-core-derive v0.21.0
[INFO] [stderr]     Checking asn1_der v0.6.3
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[INFO] [stderr]     Checking curve25519-dalek v3.0.2
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[INFO] [stderr]     Checking chacha20poly1305 v0.6.0
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[INFO] [stderr]     Checking pin-project v1.0.4
[INFO] [stderr]     Checking x25519-dalek v1.1.0
[INFO] [stderr]    Compiling prost v0.6.1
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking prost-types v0.6.1
[INFO] [stderr]     Checking futures-executor v0.3.9
[INFO] [stderr]     Checking futures v0.3.9
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[INFO] [stderr]     Checking rw-stream-sink v0.2.1
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[INFO] [stderr]     Checking serde v1.0.119
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[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stderr]     Checking serde_json v1.0.61
[INFO] [stderr]     Checking serde_yaml v0.8.15
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]     Checking multistream-select v0.9.1
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking mio v0.7.7
[INFO] [stderr]     Checking rustls v0.19.0
[INFO] [stderr]     Checking tracing v0.1.22
[INFO] [stderr]     Checking yamux v0.8.0
[INFO] [stderr]     Checking soketto v0.4.2
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking tokio v0.2.24
[INFO] [stderr]     Checking log4rs v1.0.0
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling libp2p-core v0.26.0
[INFO] [stderr]    Compiling libp2p-noise v0.28.0
[INFO] [stderr]    Compiling exocore-core v0.1.1
[INFO] [stderr]    Compiling multihash-derive v0.7.1
[INFO] [stderr]     Checking async-tls v0.11.0
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking multihash v0.13.2
[INFO] [stderr]     Checking tokio-compat-02 v0.1.2
[INFO] [stderr]     Checking parity-multiaddr v0.10.1
[INFO] [stderr]     Checking hyper v0.13.9
[INFO] [stderr]     Checking libp2p-mplex v0.26.0
[INFO] [stderr]     Checking libp2p-yamux v0.29.0
[INFO] [stderr]     Checking libp2p-websocket v0.27.0
[INFO] [stderr]     Checking libp2p-tcp v0.26.0
[INFO] [stderr]     Checking libp2p-dns v0.26.0
[INFO] [stderr]     Checking libp2p-swarm v0.26.0
[INFO] [stderr]     Checking libp2p v0.33.0
[INFO] [stdout] error[E0277]: the trait bound `StdRng: rand_core::RngCore` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/exocore-core-0.1.1/src/sec/keys.rs:181:47
[INFO] [stdout]     |
[INFO] [stdout] 181 |         petname::Petnames::default().generate(&mut rng, 3, "-")
[INFO] [stdout]     |                                               ^^^^^^^^ the trait `rand_core::RngCore` is not implemented for `StdRng`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required because of the requirements on the impl of `rand::rng::Rng` for `StdRng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exocore-core`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "364fa2fde5884cfda55355e6499fc4452ac629e0626111d89477be7c9f9098d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "364fa2fde5884cfda55355e6499fc4452ac629e0626111d89477be7c9f9098d7", kill_on_drop: false }`
[INFO] [stdout] 364fa2fde5884cfda55355e6499fc4452ac629e0626111d89477be7c9f9098d7