[INFO] fetching crate libp2p-webrtc-star-signaling-server 0.1.0...
[INFO] checking libp2p-webrtc-star-signaling-server-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate libp2p-webrtc-star-signaling-server 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate libp2p-webrtc-star-signaling-server 0.1.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libp2p-webrtc-star-signaling-server 0.1.0
[INFO] finished tweaking crates.io crate libp2p-webrtc-star-signaling-server 0.1.0
[INFO] tweaked toml for crates.io crate libp2p-webrtc-star-signaling-server 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate libp2p-webrtc-star-signaling-server 0.1.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-tungstenite v0.13.0
[INFO] [stderr]   Downloaded os_str_bytes v3.1.0
[INFO] [stderr]   Downloaded input_buffer v0.4.0
[INFO] [stderr]   Downloaded tracing-attributes v0.1.16
[INFO] [stderr]   Downloaded tracing-core v0.1.20
[INFO] [stderr]   Downloaded thiserror-impl v1.0.29
[INFO] [stderr]   Downloaded cookie_store v0.12.0
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.24
[INFO] [stderr]   Downloaded h2 v0.3.4
[INFO] [stderr]   Downloaded tokio v1.12.0
[INFO] [stderr]   Downloaded syn v1.0.77
[INFO] [stderr]   Downloaded warp v0.3.1
[INFO] [stderr]   Downloaded ureq v1.5.5
[INFO] [stderr]   Downloaded acme-lib v0.8.2
[INFO] [stderr]   Downloaded anyhow v1.0.44
[INFO] [stderr]   Downloaded tungstenite v0.15.0
[INFO] [stderr]   Downloaded async-tungstenite v0.15.0
[INFO] [stderr]   Downloaded clap_derive v3.0.0-beta.4
[INFO] [stderr]   Downloaded clap v3.0.0-beta.4
[INFO] [stderr]   Downloaded sharded-slab v0.1.3
[INFO] [stderr]   Downloaded headers v0.3.4
[INFO] [stderr]   Downloaded twoway v0.1.8
[INFO] [stderr]   Downloaded multipart v0.17.1
[INFO] [stderr]   Downloaded serde_json v1.0.68
[INFO] [stderr]   Downloaded tokio-stream v0.1.7
[INFO] [stderr]   Downloaded tinyvec v1.4.0
[INFO] [stderr]   Downloaded tracing v0.1.28
[INFO] [stderr]   Downloaded thiserror v1.0.29
[INFO] [stderr]   Downloaded tracing-log v0.1.2
[INFO] [stderr]   Downloaded tracing-serde v0.1.2
[INFO] [stderr]   Downloaded tungstenite v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0eee55eeb529ba9d1a8d59da2be57109695a57dde0e62ea37c4d89409d0b45d5
[INFO] running `Command { std: "docker" "start" "-a" "0eee55eeb529ba9d1a8d59da2be57109695a57dde0e62ea37c4d89409d0b45d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0eee55eeb529ba9d1a8d59da2be57109695a57dde0e62ea37c4d89409d0b45d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eee55eeb529ba9d1a8d59da2be57109695a57dde0e62ea37c4d89409d0b45d5", kill_on_drop: false }`
[INFO] [stdout] 0eee55eeb529ba9d1a8d59da2be57109695a57dde0e62ea37c4d89409d0b45d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2cc93210d8ab0d37d455d22dbb701d1a355bc54d5a278878b9c7c22a78b8915a
[INFO] running `Command { std: "docker" "start" "-a" "2cc93210d8ab0d37d455d22dbb701d1a355bc54d5a278878b9c7c22a78b8915a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.102
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[INFO] [stderr]     Checking hyper v0.14.13
[INFO] [stderr]     Checking warp v0.3.1
[INFO] [stderr]     Checking libp2p-webrtc-star-signaling-server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 33.47s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: buf_redux v0.8.4, multipart v0.17.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "2cc93210d8ab0d37d455d22dbb701d1a355bc54d5a278878b9c7c22a78b8915a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cc93210d8ab0d37d455d22dbb701d1a355bc54d5a278878b9c7c22a78b8915a", kill_on_drop: false }`
[INFO] [stdout] 2cc93210d8ab0d37d455d22dbb701d1a355bc54d5a278878b9c7c22a78b8915a