[INFO] fetching crate async-datachannel 0.3.0...
[INFO] testing async-datachannel-0.3.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate async-datachannel 0.3.0 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate async-datachannel 0.3.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-20/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate async-datachannel 0.3.0
[INFO] finished tweaking crates.io crate async-datachannel 0.3.0
[INFO] tweaked toml for crates.io crate async-datachannel 0.3.0 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate crates.io crate async-datachannel 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cpp_build v0.5.6
[INFO] [stderr]   Downloaded cpp_common v0.5.6
[INFO] [stderr]   Downloaded webrtc-sdp v0.3.9
[INFO] [stderr]   Downloaded async-tungstenite v0.17.1
[INFO] [stderr]   Downloaded datachannel v0.7.4
[INFO] [stderr]   Downloaded openssl-src v111.17.0+1.1.1m
[INFO] [stderr]   Downloaded datachannel-sys v0.16.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4d2df9fe27c532465caab5f9e3bfcbf9ba9194bc9b04c4224828f3ccd8916b9
[INFO] running `Command { std: "docker" "start" "-a" "a4d2df9fe27c532465caab5f9e3bfcbf9ba9194bc9b04c4224828f3ccd8916b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4d2df9fe27c532465caab5f9e3bfcbf9ba9194bc9b04c4224828f3ccd8916b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4d2df9fe27c532465caab5f9e3bfcbf9ba9194bc9b04c4224828f3ccd8916b9", kill_on_drop: false }`
[INFO] [stdout] a4d2df9fe27c532465caab5f9e3bfcbf9ba9194bc9b04c4224828f3ccd8916b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d888dec026e957800044cb7cb994107147b05d594477072ea23d4ee7e248677
[INFO] running `Command { std: "docker" "start" "-a" "2d888dec026e957800044cb7cb994107147b05d594477072ea23d4ee7e248677", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling bindgen v0.59.2
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.8
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling futures-sink v0.3.21
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling once_cell v1.10.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.7
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling slab v0.4.5
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling futures-io v0.3.21
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling libloading v0.7.3
[INFO] [stderr]    Compiling tinyvec v1.5.1
[INFO] [stderr]    Compiling tracing-core v0.1.23
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling lock_api v0.4.6
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling nom v7.1.0
[INFO] [stderr]    Compiling openssl-src v111.17.0+1.1.1m
[INFO] [stderr]    Compiling cmake v0.1.48
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling clang-sys v1.3.1
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v4.2.4
[INFO] [stderr]    Compiling mio v0.8.0
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling parking_lot v0.12.0
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling webrtc-sdp v0.3.9
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.86/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' -C metadata=d0966bec423a3e57 -C extra-filename=-d0966bec423a3e57 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-d0e4c723ecad0f39.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-3df76aa48d62b863.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-d8167d72773bee47.rmeta --cap-lints allow --cap-lints=warn --cfg syn_disable_nightly_tests` (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" "2d888dec026e957800044cb7cb994107147b05d594477072ea23d4ee7e248677", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d888dec026e957800044cb7cb994107147b05d594477072ea23d4ee7e248677", kill_on_drop: false }`
[INFO] [stdout] 2d888dec026e957800044cb7cb994107147b05d594477072ea23d4ee7e248677