[INFO] crate webcomponent 0.3.3 is already in cache
[INFO] extracting crate webcomponent 0.3.3 into work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/webcomponent/0.3.3
[INFO] extracting crate webcomponent 0.3.3 into work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/reg/webcomponent/0.3.3
[INFO] validating manifest of webcomponent-0.3.3 on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of webcomponent-0.3.3 on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "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/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/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/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/reg/webcomponent/0.3.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking webcomponent-0.3.3 against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-0/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/webcomponent/0.3.3:/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" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d215fd0599b2ca40a0f807256889c7033ab2bd4d71131797f80ed63208f2b787
[INFO] running `"docker" "start" "-a" "d215fd0599b2ca40a0f807256889c7033ab2bd4d71131797f80ed63208f2b787"`
[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" "d215fd0599b2ca40a0f807256889c7033ab2bd4d71131797f80ed63208f2b787"`
[INFO] running `"docker" "rm" "-f" "d215fd0599b2ca40a0f807256889c7033ab2bd4d71131797f80ed63208f2b787"`
[INFO] [stdout] d215fd0599b2ca40a0f807256889c7033ab2bd4d71131797f80ed63208f2b787