[INFO] fetching crate ikill 1.5.0...
[INFO] testing ikill-1.5.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate ikill 1.5.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate ikill 1.5.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/source/.cargo/config
[INFO] started tweaking crates.io crate ikill 1.5.0
[INFO] finished tweaking crates.io crate ikill 1.5.0
[INFO] tweaked toml for crates.io crate ikill 1.5.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate ikill 1.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded utf8parse v0.2.0
[INFO] [stderr]   Downloaded socket2 v0.4.0
[INFO] [stderr]   Downloaded futures-util v0.3.15
[INFO] [stderr]   Downloaded uom v0.30.0
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.74
[INFO] [stderr]   Downloaded dirs v2.0.2
[INFO] [stderr]   Downloaded platforms v1.0.3
[INFO] [stderr]   Downloaded async-trait v0.1.24
[INFO] [stderr]   Downloaded polling v2.0.3
[INFO] [stderr]   Downloaded vte v0.9.0
[INFO] [stderr]   Downloaded skim v0.9.4
[INFO] [stderr]   Downloaded const_fn v0.4.8
[INFO] [stderr]   Downloaded time v0.2.26
[INFO] [stderr]   Downloaded dirs-sys v0.3.4
[INFO] [stderr]   Downloaded tuikit v0.4.5
[INFO] [stderr]   Downloaded darwin-libproc v0.2.0
[INFO] [stderr]   Downloaded macaddr v1.0.1
[INFO] [stderr]   Downloaded heim-runtime v0.1.0-rc.1
[INFO] [stderr]   Downloaded heim-cpu v0.1.0-rc.1
[INFO] [stderr]   Downloaded env_logger v0.8.3
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.74
[INFO] [stderr]   Downloaded futures-task v0.3.15
[INFO] [stderr]   Downloaded futures-sink v0.3.15
[INFO] [stderr]   Downloaded heim-host v0.1.0-rc.1
[INFO] [stderr]   Downloaded beef v0.5.0
[INFO] [stderr]   Downloaded heim-process v0.1.1-rc.1
[INFO] [stderr]   Downloaded darwin-libproc-sys v0.2.0
[INFO] [stderr]   Downloaded mach v0.3.2
[INFO] [stderr]   Downloaded futures v0.3.15
[INFO] [stderr]   Downloaded futures-channel v0.3.15
[INFO] [stderr]   Downloaded derive_builder_core v0.9.0
[INFO] [stderr]   Downloaded async-process v1.1.0
[INFO] [stderr]   Downloaded timer v0.2.0
[INFO] [stderr]   Downloaded ordered-float v2.0.1
[INFO] [stderr]   Downloaded async-io v1.4.1
[INFO] [stderr]   Downloaded heim v0.1.0-rc.1
[INFO] [stderr]   Downloaded wepoll-sys v3.0.1
[INFO] [stderr]   Downloaded heim-common v0.1.0-rc.1
[INFO] [stderr]   Downloaded nix v0.19.1
[INFO] [stderr]   Downloaded time-macros-impl v0.1.1
[INFO] [stderr]   Downloaded derive_builder v0.9.0
[INFO] [stderr]   Downloaded crossbeam-channel v0.4.2
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.74
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.74
[INFO] [stderr]   Downloaded chrono v0.4.11
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.74
[INFO] [stderr]   Downloaded term v0.6.1
[INFO] [stderr]   Downloaded futures-io v0.3.15
[INFO] [stderr]   Downloaded heim-net v0.1.0-rc.1
[INFO] [stderr]   Downloaded defer-drop v1.0.1
[INFO] [stderr]   Downloaded fuzzy-matcher v0.3.7
[INFO] [stderr]   Downloaded async-net v1.6.0
[INFO] [stderr]   Downloaded regex v1.3.5
[INFO] [stderr]   Downloaded signal-hook v0.3.9
[INFO] [stderr]   Downloaded futures-core v0.3.15
[INFO] [stderr]   Downloaded ntapi v0.3.3
[INFO] [stderr]   Downloaded vte_generate_state_changes v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f28cc454ded31cf62fd461f59988dc35b7c45703ce452e5385defe2abcb43a9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0f28cc454ded31cf62fd461f59988dc35b7c45703ce452e5385defe2abcb43a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f28cc454ded31cf62fd461f59988dc35b7c45703ce452e5385defe2abcb43a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f28cc454ded31cf62fd461f59988dc35b7c45703ce452e5385defe2abcb43a9", kill_on_drop: false }`
[INFO] [stdout] 0f28cc454ded31cf62fd461f59988dc35b7c45703ce452e5385defe2abcb43a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2e99181f79e76a633433383711bcce1a399c670477fdc82834f11be101c20f0a
[INFO] running `Command { std: "docker" "start" "-a" "2e99181f79e76a633433383711bcce1a399c670477fdc82834f11be101c20f0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling heim-common v0.1.0-rc.1
[INFO] [stderr]    Compiling platforms v1.0.3
[INFO] [stderr]    Compiling heim-host v0.1.0-rc.1
[INFO] [stderr]    Compiling const_fn v0.4.8
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling macaddr v1.0.1
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stderr]    Compiling utf8parse v0.2.0
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling beef v0.5.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling time v0.2.26
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling fuzzy-matcher v0.3.7
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling defer-drop v1.0.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling vte_generate_state_changes v0.1.1
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr]    Compiling async-executor v1.4.1
[INFO] [stderr]    Compiling crossbeam v0.8.1
[INFO] [stderr]    Compiling ordered-float v2.0.1
[INFO] [stderr]    Compiling async-fs v1.5.0
[INFO] [stderr]    Compiling vte v0.9.0
[INFO] [stderr]    Compiling regex v1.3.5
[INFO] [stderr]    Compiling uom v0.30.0
[INFO] [stderr]    Compiling socket2 v0.4.0
[INFO] [stderr]    Compiling polling v2.0.3
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling nix v0.19.1
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling num_cpus v1.12.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling signal-hook v0.3.9
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling async-io v1.4.1
[INFO] [stderr]    Compiling env_logger v0.8.3
[INFO] [stderr]    Compiling term v0.6.1
[INFO] [stderr]    Compiling chrono v0.4.11
[INFO] [stderr]    Compiling rayon v1.3.0
[INFO] [stderr]    Compiling async-net v1.6.0
[INFO] [stderr]    Compiling async-process v1.1.0
[INFO] [stderr]    Compiling futures v0.3.15
[INFO] [stderr]    Compiling timer v0.2.0
[INFO] [stderr]    Compiling smol v1.2.5
[INFO] [stderr]    Compiling heim-runtime v0.1.0-rc.1
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling tuikit v0.4.5
[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-1.0.72/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-mut"' -C metadata=6a9661c8bcc60b80 -C extra-filename=-6a9661c8bcc60b80 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-20e9d3059c177464.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-cae492c9db61429b.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-7302ed5398444af1.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" "2e99181f79e76a633433383711bcce1a399c670477fdc82834f11be101c20f0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e99181f79e76a633433383711bcce1a399c670477fdc82834f11be101c20f0a", kill_on_drop: false }`
[INFO] [stdout] 2e99181f79e76a633433383711bcce1a399c670477fdc82834f11be101c20f0a