[INFO] cloning repository https://github.com/MissionKontrol/css_walker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MissionKontrol/css_walker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMissionKontrol%2Fcss_walker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMissionKontrol%2Fcss_walker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1283986a2fd17a7e30a7bc3004bc81a4a896c279
[INFO] testing MissionKontrol/css_walker against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMissionKontrol%2Fcss_walker" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MissionKontrol/css_walker 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] started tweaking git repo https://github.com/MissionKontrol/css_walker
[INFO] finished tweaking git repo https://github.com/MissionKontrol/css_walker
[INFO] tweaked toml for git repo https://github.com/MissionKontrol/css_walker written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/MissionKontrol/css_walker 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]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-width v0.1.8
[INFO] [stderr]   Downloaded itoa v0.4.7
[INFO] [stderr]   Downloaded new_debug_unreachable v1.0.4
[INFO] [stderr]   Downloaded string_cache v0.8.1
[INFO] [stderr]   Downloaded phf_generator v0.8.0
[INFO] [stderr]   Downloaded precomputed-hash v0.1.1
[INFO] [stderr]   Downloaded rand_pcg v0.2.1
[INFO] [stderr]   Downloaded dtoa-short v0.3.3
[INFO] [stderr]   Downloaded cssparser v0.27.2
[INFO] [stderr]   Downloaded selectors v0.22.0
[INFO] [stderr]   Downloaded string_cache_codegen v0.5.1
[INFO] [stderr]   Downloaded mac v0.1.1
[INFO] [stderr]   Downloaded futf v0.1.4
[INFO] [stderr]   Downloaded markup5ever v0.10.1
[INFO] [stderr]   Downloaded html5ever v0.25.1
[INFO] [stderr]   Downloaded ego-tree v0.6.2
[INFO] [stderr]   Downloaded phf_macros v0.8.0
[INFO] [stderr]   Downloaded thin-slice v0.1.1
[INFO] [stderr]   Downloaded libc v0.2.98
[INFO] [stderr]   Downloaded syn v1.0.73
[INFO] [stderr]   Downloaded servo_arc v0.1.1
[INFO] [stderr]   Downloaded tendril v0.4.2
[INFO] [stderr]   Downloaded cssparser-macros v0.6.0
[INFO] [stderr]   Downloaded phf v0.8.0
[INFO] [stderr]   Downloaded phf_codegen v0.8.0
[INFO] [stderr]   Downloaded scraper v0.12.0
[INFO] [stderr]   Downloaded derive_more v0.99.14
[INFO] [stderr]   Downloaded siphasher v0.3.5
[INFO] [stderr]   Downloaded structopt v0.1.7
[INFO] [stderr]   Downloaded matches v0.1.8
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.10
[INFO] [stderr]   Downloaded phf_shared v0.8.0
[INFO] [stderr]   Downloaded stable_deref_trait v1.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", 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] d97d9dea4987bcf110781232b3f3e9f4f4e413ecb5d23e771ec78cc347150bcb
[INFO] running `Command { std: "docker" "start" "-a" "d97d9dea4987bcf110781232b3f3e9f4f4e413ecb5d23e771ec78cc347150bcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d97d9dea4987bcf110781232b3f3e9f4f4e413ecb5d23e771ec78cc347150bcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d97d9dea4987bcf110781232b3f3e9f4f4e413ecb5d23e771ec78cc347150bcb", kill_on_drop: false }`
[INFO] [stdout] d97d9dea4987bcf110781232b3f3e9f4f4e413ecb5d23e771ec78cc347150bcb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] a0de68f7652d548cb87077f0a1e97f3a85fc5c23e5003dab2f1e867f7798aedd
[INFO] running `Command { std: "docker" "start" "-a" "a0de68f7652d548cb87077f0a1e97f3a85fc5c23e5003dab2f1e867f7798aedd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling tendril v0.4.2
[INFO] [stderr]    Compiling string_cache v0.8.1
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling clap v2.33.3
[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 phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling selectors v0.22.0
[INFO] [stderr]    Compiling markup5ever v0.10.1
[INFO] [stderr]    Compiling structopt v0.1.7
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling cssparser v0.27.2
[INFO] [stderr]    Compiling cssparser-macros v0.6.0
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling derive_more v0.99.14
[INFO] [stderr]    Compiling phf v0.8.0
[INFO] [stderr]    Compiling scraper v0.12.0
[INFO] [stderr]    Compiling css_walker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unexpected token: `<eof>`
[INFO] [stdout]   --> src/main.rs:52:47
[INFO] [stdout]    |
[INFO] [stdout] 52 |             println!("class {:?}", div.value().);
[INFO] [stdout]    |                                               ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `css_walker` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "a0de68f7652d548cb87077f0a1e97f3a85fc5c23e5003dab2f1e867f7798aedd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0de68f7652d548cb87077f0a1e97f3a85fc5c23e5003dab2f1e867f7798aedd", kill_on_drop: false }`
[INFO] [stdout] a0de68f7652d548cb87077f0a1e97f3a85fc5c23e5003dab2f1e867f7798aedd