[INFO] cloning repository https://github.com/paulsevere/rust-dom-experiment
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/paulsevere/rust-dom-experiment" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulsevere%2Frust-dom-experiment", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulsevere%2Frust-dom-experiment'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b45ca7c337a2a64bbbf13973fb594759b2860465
[INFO] checking paulsevere/rust-dom-experiment against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulsevere%2Frust-dom-experiment" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/paulsevere/rust-dom-experiment on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/paulsevere/rust-dom-experiment
[INFO] finished tweaking git repo https://github.com/paulsevere/rust-dom-experiment
[INFO] tweaked toml for git repo https://github.com/paulsevere/rust-dom-experiment written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/paulsevere/rust-dom-experiment already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 91d080235fb9097f87b33f4a758088993b14d5e4aedbf109fae951813c070393
[INFO] running `Command { std: "docker" "start" "-a" "91d080235fb9097f87b33f4a758088993b14d5e4aedbf109fae951813c070393", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91d080235fb9097f87b33f4a758088993b14d5e4aedbf109fae951813c070393", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91d080235fb9097f87b33f4a758088993b14d5e4aedbf109fae951813c070393", kill_on_drop: false }`
[INFO] [stdout] 91d080235fb9097f87b33f4a758088993b14d5e4aedbf109fae951813c070393
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--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] 007387e508afbbf7e61fd75d890fb1a07d65e381509f5815b9232c9730b23890
[INFO] running `Command { std: "docker" "start" "-a" "007387e508afbbf7e61fd75d890fb1a07d65e381509f5815b9232c9730b23890", kill_on_drop: false }`
[INFO] [stderr]     Checking dump v0.1.1
[INFO] [stderr]     Checking cgmath v0.15.0
[INFO] [stderr]     Checking serde_json v1.0.8
[INFO] [stderr]     Checking euclid v0.16.0
[INFO] [stderr]    Compiling serde_derive_internals v0.18.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/dump-0.1.1/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(core_intrinsics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dump`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "007387e508afbbf7e61fd75d890fb1a07d65e381509f5815b9232c9730b23890", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "007387e508afbbf7e61fd75d890fb1a07d65e381509f5815b9232c9730b23890", kill_on_drop: false }`
[INFO] [stdout] 007387e508afbbf7e61fd75d890fb1a07d65e381509f5815b9232c9730b23890