[INFO] cloning repository https://github.com/TechieQuokka/webrtc-chat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TechieQuokka/webrtc-chat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTechieQuokka%2Fwebrtc-chat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTechieQuokka%2Fwebrtc-chat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d83ae647da96fe996bf7415981a225c165dbaf74
[INFO] testing TechieQuokka/webrtc-chat against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTechieQuokka%2Fwebrtc-chat" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/TechieQuokka/webrtc-chat
[INFO] finished tweaking git repo https://github.com/TechieQuokka/webrtc-chat
[INFO] tweaked toml for git repo https://github.com/TechieQuokka/webrtc-chat written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/TechieQuokka/webrtc-chat on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/TechieQuokka/webrtc-chat 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bfadf75c456f2fdaf633e6d9841e5564ff1b6d5c5714a95922b591b696a2f150
[INFO] running `Command { std: "docker" "start" "-a" "bfadf75c456f2fdaf633e6d9841e5564ff1b6d5c5714a95922b591b696a2f150", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bfadf75c456f2fdaf633e6d9841e5564ff1b6d5c5714a95922b591b696a2f150", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfadf75c456f2fdaf633e6d9841e5564ff1b6d5c5714a95922b591b696a2f150", kill_on_drop: false }`
[INFO] [stdout] bfadf75c456f2fdaf633e6d9841e5564ff1b6d5c5714a95922b591b696a2f150
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91c07aa65f1a48be9540134ecca4a3f6ec5dce6710cf5653f59d578647b37b1d
[INFO] running `Command { std: "docker" "start" "-a" "91c07aa65f1a48be9540134ecca4a3f6ec5dce6710cf5653f59d578647b37b1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.183
[INFO] [stderr]    Compiling zerocopy v0.8.42
[INFO] [stderr]    Compiling cc v1.2.56
[INFO] [stderr]    Compiling pin-project-lite v0.2.17
[INFO] [stderr]    Compiling bytes v1.11.1
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling portable-atomic v1.13.1
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling ipnet v2.12.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling untrusted v0.9.0
[INFO] [stderr]    Compiling deranged v0.5.8
[INFO] [stderr]    Compiling futures-sink v0.3.32
[INFO] [stderr]    Compiling futures-core v0.3.32
[INFO] [stderr]    Compiling base16ct v0.2.0
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling utf8_iter v1.0.4
[INFO] [stderr]    Compiling futures-task v0.3.32
[INFO] [stderr]    Compiling base64 v0.22.1
[INFO] [stderr]    Compiling futures-channel v0.3.32
[INFO] [stderr]    Compiling crc-catalog v2.4.0
[INFO] [stderr]    Compiling futures-io v0.3.32
[INFO] [stderr]    Compiling slab v0.4.12
[INFO] [stderr]    Compiling percent-encoding v2.3.2
[INFO] [stderr]    Compiling semver v1.0.27
[INFO] [stderr]    Compiling crc v3.4.0
[INFO] [stderr]    Compiling data-encoding v2.10.0
[INFO] [stderr]    Compiling form_urlencoded v1.2.2
[INFO] [stderr]    Compiling oid-registry v0.7.1
[INFO] [stderr]    Compiling openssl v0.10.76
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling native-tls v0.2.18
[INFO] [stderr]    Compiling arc-swap v1.8.2
[INFO] [stderr]    Compiling substring v1.4.5
[INFO] [stderr]    Compiling openssl-probe v0.2.1
[INFO] [stderr]    Compiling httparse v1.10.1
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling atomic-waker v1.1.2
[INFO] [stderr]    Compiling rustls v0.23.37
[INFO] [stderr]    Compiling waitgroup v0.1.2
[INFO] [stderr]    Compiling anstyle-parse v1.0.0
[INFO] [stderr]    Compiling pem v3.0.6
[INFO] [stderr]    Compiling curve25519-dalek v4.1.3
[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling regex-syntax v0.8.10
[INFO] [stderr]    Compiling colorchoice v1.0.4
[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.2
[INFO] [stderr]    Compiling instability v0.3.11
[INFO] [stderr]    Compiling anstyle-query v1.1.5
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling anstream v1.0.0
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling http v1.4.0
[INFO] [stderr]    Compiling clap_lex v1.1.0
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling clap_builder v4.6.0
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling compact_str v0.8.1
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling thread_local v1.1.9
[INFO] [stderr]    Compiling unicode-truncate v1.1.0
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]    Compiling openssl-sys v0.9.112
[INFO] [stderr]    Compiling time v0.3.47
[INFO] [stderr]    Compiling nu-ansi-term v0.50.3
[INFO] [stderr]    Compiling iana-time-zone v0.1.65
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling chrono v0.4.44
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling mio v1.1.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling socket2 v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling nix v0.26.4
[INFO] [stderr]    Compiling ff v0.13.1
[INFO] [stderr]    Compiling group v0.13.0
[INFO] [stderr]    Compiling rand_core v0.9.5
[INFO] [stderr]    Compiling signal-hook v0.3.18
[INFO] [stderr]    Compiling socket2 v0.5.10
[INFO] [stderr]    Compiling tracing-subscriber v0.3.22
[INFO] [stderr]    Compiling uuid v1.22.0
[INFO] [stderr]    Compiling signal-hook-mio v0.2.5
[INFO] [stderr]    Compiling crossterm v0.28.1
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr] error: could not compile `syn` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2026-04-21-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.117/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 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "test", "visit", "visit-mut"))' -C metadata=f50fd23ee619c33a -C extra-filename=-db35dfc171bce774 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-0fa97b1aa44f5fda.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-544fd508281ca8af.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-423507c85e36a25a.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "91c07aa65f1a48be9540134ecca4a3f6ec5dce6710cf5653f59d578647b37b1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91c07aa65f1a48be9540134ecca4a3f6ec5dce6710cf5653f59d578647b37b1d", kill_on_drop: false }`
[INFO] [stdout] 91c07aa65f1a48be9540134ecca4a3f6ec5dce6710cf5653f59d578647b37b1d
