[INFO] updating cached repository web-dom/webcomponent
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/web-dom/webcomponent
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/web-dom/webcomponent" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/web-dom/webcomponent"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/web-dom/webcomponent'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/web-dom/webcomponent" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/web-dom/webcomponent"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/web-dom/webcomponent'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7b8acde96bdf6d34812e3051313fa0980f674bbb
[INFO] sha for GitHub repo web-dom/webcomponent: 7b8acde96bdf6d34812e3051313fa0980f674bbb
[INFO] validating manifest of web-dom/webcomponent on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of web-dom/webcomponent on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing web-dom/webcomponent
[INFO] finished frobbing web-dom/webcomponent
[INFO] frobbed toml for web-dom/webcomponent written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/web-dom/webcomponent/Cargo.toml
[INFO] started frobbing web-dom/webcomponent
[INFO] finished frobbing web-dom/webcomponent
[INFO] frobbed toml for web-dom/webcomponent written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/web-dom/webcomponent/Cargo.toml
[INFO] crate web-dom/webcomponent already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking web-dom/webcomponent against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-2/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/web-dom/webcomponent:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=forbid" "-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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1a81fdc94f387455359135d47f049c2954bd7f1e82b631ec2067de5beb82e853
[INFO] running `"docker" "start" "-a" "1a81fdc94f387455359135d47f049c2954bd7f1e82b631ec2067de5beb82e853"`
[INFO] [stderr]     Checking web-dom v0.0.8
[INFO] [stderr]     Checking 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] warning: build failed, waiting for other jobs to finish...
[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" "1a81fdc94f387455359135d47f049c2954bd7f1e82b631ec2067de5beb82e853"`
[INFO] running `"docker" "rm" "-f" "1a81fdc94f387455359135d47f049c2954bd7f1e82b631ec2067de5beb82e853"`
[INFO] [stdout] 1a81fdc94f387455359135d47f049c2954bd7f1e82b631ec2067de5beb82e853