[INFO] crate alloc_counter 0.0.2 is already in cache
[INFO] extracting crate alloc_counter 0.0.2 into work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/alloc_counter/0.0.2
[INFO] extracting crate alloc_counter 0.0.2 into work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/alloc_counter/0.0.2
[INFO] validating manifest of alloc_counter-0.0.2 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 alloc_counter-0.0.2 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 alloc_counter-0.0.2
[INFO] finished frobbing alloc_counter-0.0.2
[INFO] frobbed toml for alloc_counter-0.0.2 written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/alloc_counter/0.0.2/Cargo.toml
[INFO] started frobbing alloc_counter-0.0.2
[INFO] finished frobbing alloc_counter-0.0.2
[INFO] frobbed toml for alloc_counter-0.0.2 written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/alloc_counter/0.0.2/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] checking alloc_counter-0.0.2 against try#f45cc3094ee337acd688771b9234318046b0572d for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-5/try#f45cc3094ee337acd688771b9234318046b0572d:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/alloc_counter/0.0.2:/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" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2f80af160aba86afbf91538d9dc67bc4d3b778d8fa9e5e1290a386d07938637e
[INFO] running `"docker" "start" "-a" "2f80af160aba86afbf91538d9dc67bc4d3b778d8fa9e5e1290a386d07938637e"`
[INFO] [stderr]    Compiling alloc_counter_macro v0.0.1
[INFO] [stderr]     Checking alloc_counter v0.0.2 (/opt/crater/workdir)
[INFO] [stderr] error[E0727]: `async` generators are not yet supported
[INFO] [stderr]   --> tests/futures.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     #[no_alloc]
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `alloc_counter`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "2f80af160aba86afbf91538d9dc67bc4d3b778d8fa9e5e1290a386d07938637e"`
[INFO] running `"docker" "rm" "-f" "2f80af160aba86afbf91538d9dc67bc4d3b778d8fa9e5e1290a386d07938637e"`
[INFO] [stdout] 2f80af160aba86afbf91538d9dc67bc4d3b778d8fa9e5e1290a386d07938637e