[INFO] cloning repository https://github.com/web-dom/webcomponent
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/web-dom/webcomponent" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fweb-dom%2Fwebcomponent", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fweb-dom%2Fwebcomponent'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b8acde96bdf6d34812e3051313fa0980f674bbb
[INFO] checking web-dom/webcomponent against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fweb-dom%2Fwebcomponent" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/web-dom/webcomponent on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/web-dom/webcomponent
[INFO] finished tweaking git repo https://github.com/web-dom/webcomponent
[INFO] tweaked toml for git repo https://github.com/web-dom/webcomponent written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/web-dom/webcomponent already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f0ee61cd13fb2a26bbe0428550d216f055be748688bdc57220ea0ace3c3a6a5
[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" "4f0ee61cd13fb2a26bbe0428550d216f055be748688bdc57220ea0ace3c3a6a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f0ee61cd13fb2a26bbe0428550d216f055be748688bdc57220ea0ace3c3a6a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f0ee61cd13fb2a26bbe0428550d216f055be748688bdc57220ea0ace3c3a6a5", kill_on_drop: false }`
[INFO] [stdout] 4f0ee61cd13fb2a26bbe0428550d216f055be748688bdc57220ea0ace3c3a6a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00f02359d8e52221046b9ffd3d94c042cd0cb317029b1e99f9b5b4d263e0f840
[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" "00f02359d8e52221046b9ffd3d94c042cd0cb317029b1e99f9b5b4d263e0f840", kill_on_drop: false }`
[INFO] [stderr]     Checking web-dom v0.0.8
[INFO] [stderr]     Checking webcomponent v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0502]: cannot borrow `*controller` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/lib.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |             (controller.processor)(controller, &tag, el);
[INFO] [stdout]    |             ----------------------^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             mutable borrow occurs here
[INFO] [stdout]    |             immutable borrow occurs here
[INFO] [stdout]    |             immutable borrow later used by call
[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 E0502`.
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `*controller` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/lib.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |             (controller.processor)(controller, &tag, el);
[INFO] [stdout]    |             ----------------------^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             mutable borrow occurs here
[INFO] [stdout]    |             immutable borrow occurs here
[INFO] [stdout]    |             immutable borrow later used by call
[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 E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `webcomponent`
[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" "00f02359d8e52221046b9ffd3d94c042cd0cb317029b1e99f9b5b4d263e0f840", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00f02359d8e52221046b9ffd3d94c042cd0cb317029b1e99f9b5b4d263e0f840", kill_on_drop: false }`
[INFO] [stdout] 00f02359d8e52221046b9ffd3d94c042cd0cb317029b1e99f9b5b4d263e0f840