[INFO] crate kg-tree 0.1.1 is already in cache
[INFO] extracting crate kg-tree 0.1.1 into work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/kg-tree/0.1.1
[INFO] extracting crate kg-tree 0.1.1 into work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/kg-tree/0.1.1
[INFO] validating manifest of kg-tree-0.1.1 on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kg-tree-0.1.1 on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kg-tree-0.1.1
[INFO] finished frobbing kg-tree-0.1.1
[INFO] frobbed toml for kg-tree-0.1.1 written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/kg-tree/0.1.1/Cargo.toml
[INFO] started frobbing kg-tree-0.1.1
[INFO] finished frobbing kg-tree-0.1.1
[INFO] frobbed toml for kg-tree-0.1.1 written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/kg-tree/0.1.1/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking kg-tree-0.1.1 against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-3/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/kg-tree/0.1.1:/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=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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e49ad6eee8d28f2b4fa7ed6c1fff6bf22caf95095090f31419b78c2429260f52
[INFO] running `"docker" "start" "-a" "e49ad6eee8d28f2b4fa7ed6c1fff6bf22caf95095090f31419b78c2429260f52"`
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling kg-display v0.1.1
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking kg-utils v0.2.3
[INFO] [stderr]    Compiling heapsize_derive v0.1.4
[INFO] [stderr] error[E0658]: use of unstable library feature 'alloc_layout_extra'
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/kg-utils-0.2.3/src/collections/sparse_set.rs:231:11
[INFO] [stderr]     |
[INFO] [stderr] 231 |     match Layout::array::<T>(size) {
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/55724
[INFO] [stderr]     = help: add #![feature(alloc_layout_extra)] to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: Could not compile `kg-utils`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0658]: use of unstable library feature 'alloc_layout_extra'
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/kg-utils-0.2.3/src/collections/sparse_set.rs:231:11
[INFO] [stderr]     |
[INFO] [stderr] 231 |     match Layout::array::<T>(size) {
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/55724
[INFO] [stderr]     = help: add #![feature(alloc_layout_extra)] to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: Could not compile `kg-utils`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e49ad6eee8d28f2b4fa7ed6c1fff6bf22caf95095090f31419b78c2429260f52"`
[INFO] running `"docker" "rm" "-f" "e49ad6eee8d28f2b4fa7ed6c1fff6bf22caf95095090f31419b78c2429260f52"`
[INFO] [stdout] e49ad6eee8d28f2b4fa7ed6c1fff6bf22caf95095090f31419b78c2429260f52