[INFO] fetching crate skyway-webrtc-gateway-api 0.2.1...
[INFO] checking skyway-webrtc-gateway-api-0.2.1 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate skyway-webrtc-gateway-api 0.2.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate skyway-webrtc-gateway-api 0.2.1 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate skyway-webrtc-gateway-api 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate skyway-webrtc-gateway-api 0.2.1
[INFO] tweaked toml for crates.io crate skyway-webrtc-gateway-api 0.2.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate skyway-webrtc-gateway-api 0.2.1 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded similar v2.1.0
[INFO] [stderr]   Downloaded dotenv_codegen_implementation v0.15.0
[INFO] [stderr]   Downloaded dotenv_codegen v0.15.0
[INFO] [stderr]   Downloaded quote v1.0.15
[INFO] [stderr]   Downloaded backtrace v0.3.64
[INFO] [stderr]   Downloaded assert-json-diff v2.0.1
[INFO] [stderr]   Downloaded mockito v0.31.0
[INFO] [stderr]   Downloaded redox_syscall v0.2.11
[INFO] [stderr]   Downloaded hyper v0.14.22
[INFO] [stderr]   Downloaded reqwest v0.11.12
[INFO] [stderr]   Downloaded object v0.27.1
[INFO] [stderr]   Downloaded gimli v0.26.1
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79a53bf97cc01814df48a0204f39a97a4960bea8d79c3b68d9d063c79d1dda3b
[INFO] running `Command { std: "docker" "start" "-a" "79a53bf97cc01814df48a0204f39a97a4960bea8d79c3b68d9d063c79d1dda3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79a53bf97cc01814df48a0204f39a97a4960bea8d79c3b68d9d063c79d1dda3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79a53bf97cc01814df48a0204f39a97a4960bea8d79c3b68d9d063c79d1dda3b", kill_on_drop: false }`
[INFO] [stdout] 79a53bf97cc01814df48a0204f39a97a4960bea8d79c3b68d9d063c79d1dda3b
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 068677d30e9f3540ac0157af89f476219102dade0ce0e1e750dc6cf0a7ac6e9a
[INFO] running `Command { std: "docker" "start" "-a" "068677d30e9f3540ac0157af89f476219102dade0ce0e1e750dc6cf0a7ac6e9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]     Checking tracing-core v0.1.23
[INFO] [stderr]    Compiling serde_json v1.0.87
[INFO] [stderr]     Checking once_cell v1.16.0
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking tracing v0.1.32
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling dotenv v0.15.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ipnet v2.4.0
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]     Checking similar v2.1.0
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "068677d30e9f3540ac0157af89f476219102dade0ce0e1e750dc6cf0a7ac6e9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "068677d30e9f3540ac0157af89f476219102dade0ce0e1e750dc6cf0a7ac6e9a", kill_on_drop: false }`
[INFO] [stdout] 068677d30e9f3540ac0157af89f476219102dade0ce0e1e750dc6cf0a7ac6e9a