[INFO] fetching crate webcomponent 0.3.3...
[INFO] extracting crate webcomponent 0.3.3 into work/ex/beta-1.35-1/sources/1.34.0/reg/webcomponent/0.3.3
[INFO] extracting crate webcomponent 0.3.3 into work/ex/beta-1.35-1/sources/beta-2019-04-11/reg/webcomponent/0.3.3
[INFO] validating manifest of webcomponent-0.3.3 on toolchain 1.34.0
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+1.34.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of webcomponent-0.3.3 on toolchain beta-2019-04-11
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+beta-2019-04-11" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing webcomponent-0.3.3
[INFO] finished frobbing webcomponent-0.3.3
[INFO] frobbed toml for webcomponent-0.3.3 written to work/ex/beta-1.35-1/sources/1.34.0/reg/webcomponent/0.3.3/Cargo.toml
[INFO] started frobbing webcomponent-0.3.3
[INFO] finished frobbing webcomponent-0.3.3
[INFO] frobbed toml for webcomponent-0.3.3 written to work/ex/beta-1.35-1/sources/beta-2019-04-11/reg/webcomponent/0.3.3/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+1.34.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+beta-2019-04-11" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+1.34.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+beta-2019-04-11" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing webcomponent-0.3.3 against beta-2019-04-11 for beta-1.35-1
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/beta-1.35-1/worker-7/beta-2019-04-11:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/beta-1.35-1/sources/beta-2019-04-11/reg/webcomponent/0.3.3:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-04-11" "build" "--frozen"`
[INFO] [stdout] 6097caa138396b969f4432c1b6ab1a1917b9a060c1dfddada0c7b54f241ed39c
[INFO] running `"docker" "start" "-a" "6097caa138396b969f4432c1b6ab1a1917b9a060c1dfddada0c7b54f241ed39c"`
[INFO] [stderr]    Compiling web-dom v0.0.8
[INFO] [stderr]    Compiling webcomponent v0.3.3 (/opt/crater/workdir)
[INFO] [stderr] error[E0502]: cannot borrow `*controller` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/lib.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |             (controller.processor)(controller, &tag, el);
[INFO] [stderr]    |             ----------------------^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             mutable borrow occurs here
[INFO] [stderr]    |             immutable borrow occurs here
[INFO] [stderr]    |             immutable borrow later used by call
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0502`.
[INFO] [stderr] error: Could not compile `webcomponent`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "6097caa138396b969f4432c1b6ab1a1917b9a060c1dfddada0c7b54f241ed39c"`
[INFO] running `"docker" "rm" "-f" "6097caa138396b969f4432c1b6ab1a1917b9a060c1dfddada0c7b54f241ed39c"`
[INFO] [stdout] 6097caa138396b969f4432c1b6ab1a1917b9a060c1dfddada0c7b54f241ed39c