[INFO] cloning repository https://github.com/vn-ki/letterboxd-compare
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vn-ki/letterboxd-compare" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvn-ki%2Fletterboxd-compare", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvn-ki%2Fletterboxd-compare'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ee8c5d5852ab663270d7d620814acef096cd5d3d
[INFO] testing vn-ki/letterboxd-compare against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvn-ki%2Fletterboxd-compare" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vn-ki/letterboxd-compare on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vn-ki/letterboxd-compare
[INFO] finished tweaking git repo https://github.com/vn-ki/letterboxd-compare
[INFO] tweaked toml for git repo https://github.com/vn-ki/letterboxd-compare written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/vn-ki/letterboxd-compare already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dtoa-short v0.3.3
[INFO] [stderr]   Downloaded askama_escape v0.2.0
[INFO] [stderr]   Downloaded askama_shared v0.8.0
[INFO] [stderr]   Downloaded askama v0.8.0
[INFO] [stderr]   Downloaded wasm-bindgen-test v0.3.19
[INFO] [stderr]   Downloaded wasm-bindgen-test-macro v0.3.19
[INFO] [stderr]   Downloaded smallvec v1.5.1
[INFO] [stderr]   Downloaded askama_derive v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf85584883c06448528966ec3e466126c11a444f283674e0e85bf409b062f570
[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" "bf85584883c06448528966ec3e466126c11a444f283674e0e85bf409b062f570", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf85584883c06448528966ec3e466126c11a444f283674e0e85bf409b062f570", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf85584883c06448528966ec3e466126c11a444f283674e0e85bf409b062f570", kill_on_drop: false }`
[INFO] [stdout] bf85584883c06448528966ec3e466126c11a444f283674e0e85bf409b062f570
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53a21c01ad3404d0a9ba864cec8886fea123ea6e592faa5cbd92290dd696d402
[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" "53a21c01ad3404d0a9ba864cec8886fea123ea6e592faa5cbd92290dd696d402", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling futures-io v0.3.8
[INFO] [stderr]    Compiling openssl v0.10.31
[INFO] [stderr]    Compiling native-tls v0.2.6
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling askama_escape v0.2.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling anyhow v1.0.35
[INFO] [stderr]    Compiling thin-slice v0.1.1
[INFO] [stderr]    Compiling ego-tree v0.6.2
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling tracing-core v0.1.17
[INFO] [stderr]    Compiling sharded-slab v0.1.0
[INFO] [stderr]    Compiling openssl-sys v0.9.59
[INFO] [stderr]    Compiling dtoa-short v0.3.3
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling servo_arc v0.1.1
[INFO] [stderr]    Compiling futf v0.1.4
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling signal-hook-registry v1.2.2
[INFO] [stderr]    Compiling socket2 v0.3.17
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling headers v0.3.2
[INFO] [stderr]    Compiling tracing-log v0.1.1
[INFO] [stderr]    Compiling tendril v0.4.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling tungstenite v0.11.1
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling multipart v0.17.0
[INFO] [stderr]    Compiling selectors v0.22.0
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling cssparser v0.27.2
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling cssparser-macros v0.6.0
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling tokio v0.2.24
[INFO] [stderr] error: could not compile `cssparser`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name build_script_build --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cssparser-0.27.2/build.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=b88f1acede41a9f2 -C extra-filename=-b88f1acede41a9f2 --out-dir /opt/rustwide/target/debug/build/cssparser-b88f1acede41a9f2 -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-fc674c02767ecd53.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-1ba06248e155a417.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-9d06810c0ca1f668.rlib --cap-lints allow --cap-lints=warn` (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" "53a21c01ad3404d0a9ba864cec8886fea123ea6e592faa5cbd92290dd696d402", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53a21c01ad3404d0a9ba864cec8886fea123ea6e592faa5cbd92290dd696d402", kill_on_drop: false }`
[INFO] [stdout] 53a21c01ad3404d0a9ba864cec8886fea123ea6e592faa5cbd92290dd696d402