[INFO] fetching crate wacr 2.2.1...
[INFO] checking wacr-2.2.1 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate wacr 2.2.1 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate wacr 2.2.1
[INFO] finished tweaking crates.io crate wacr 2.2.1
[INFO] tweaked toml for crates.io crate wacr 2.2.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate wacr 2.2.1 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate wacr 2.2.1 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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded webrtc-srtp v0.9.0
[INFO] [stderr]   Downloaded actix-cors v0.6.3
[INFO] [stderr]   Downloaded ff v0.12.0
[INFO] [stderr]   Downloaded actix-web-codegen v4.1.0
[INFO] [stderr]   Downloaded actix-rt v2.7.0
[INFO] [stderr]   Downloaded vkclient v4.0.2
[INFO] [stderr]   Downloaded bytestring v1.1.0
[INFO] [stderr]   Downloaded webrtc-sctp v0.6.1
[INFO] [stderr]   Downloaded actix-server v2.1.1
[INFO] [stderr]   Downloaded actix-files v0.6.2
[INFO] [stderr]   Downloaded cookie v0.16.1
[INFO] [stderr]   Downloaded env_logger v0.9.1
[INFO] [stderr]   Downloaded rtp v0.6.7
[INFO] [stderr]   Downloaded uuid v1.2.1
[INFO] [stderr]   Downloaded webrtc-media v0.4.7
[INFO] [stderr]   Downloaded sdp v0.5.2
[INFO] [stderr]   Downloaded webrtc-data v0.5.0
[INFO] [stderr]   Downloaded stun v0.4.3
[INFO] [stderr]   Downloaded turn v0.6.0
[INFO] [stderr]   Downloaded webrtc v0.5.1
[INFO] [stderr]   Downloaded actix-http v3.2.2
[INFO] [stderr]   Downloaded actix-web v4.2.1
[INFO] [stderr]   Downloaded webrtc-dtls v0.6.0
[INFO] [stderr]   Downloaded webrtc-ice v0.8.1
[INFO] [stderr]   Downloaded rtcp v0.7.0
[INFO] [stderr]   Downloaded libc v0.2.136
[INFO] [stderr]   Downloaded webrtc-mdns v0.5.0
[INFO] [stderr]   Downloaded webrtc-util v0.6.0
[INFO] [stderr]   Downloaded interceptor v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4511903ca86535dcb7bb62384ebd1c1ca8d43fb668399d92aa16ee7b606a3032
[INFO] running `Command { std: "docker" "start" "-a" "4511903ca86535dcb7bb62384ebd1c1ca8d43fb668399d92aa16ee7b606a3032", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4511903ca86535dcb7bb62384ebd1c1ca8d43fb668399d92aa16ee7b606a3032", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4511903ca86535dcb7bb62384ebd1c1ca8d43fb668399d92aa16ee7b606a3032", kill_on_drop: false }`
[INFO] [stdout] 4511903ca86535dcb7bb62384ebd1c1ca8d43fb668399d92aa16ee7b606a3032
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5676fabea4b034ab06ede60c8bfb812da0add9beff090e1cb61ab491aba90415
[INFO] running `Command { std: "docker" "start" "-a" "5676fabea4b034ab06ede60c8bfb812da0add9beff090e1cb61ab491aba90415", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling libc v0.2.136
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking once_cell v1.15.0
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling parking_lot_core v0.9.4
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/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]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "5676fabea4b034ab06ede60c8bfb812da0add9beff090e1cb61ab491aba90415", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5676fabea4b034ab06ede60c8bfb812da0add9beff090e1cb61ab491aba90415", kill_on_drop: false }`
[INFO] [stdout] 5676fabea4b034ab06ede60c8bfb812da0add9beff090e1cb61ab491aba90415