[INFO] crate spmc_buffer 0.5.1 is already in cache
[INFO] extracting crate spmc_buffer 0.5.1 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/spmc_buffer/0.5.1
[INFO] extracting crate spmc_buffer 0.5.1 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/spmc_buffer/0.5.1
[INFO] validating manifest of spmc_buffer-0.5.1 on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of spmc_buffer-0.5.1 on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing spmc_buffer-0.5.1
[INFO] finished frobbing spmc_buffer-0.5.1
[INFO] frobbed toml for spmc_buffer-0.5.1 written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/spmc_buffer/0.5.1/Cargo.toml
[INFO] started frobbing spmc_buffer-0.5.1
[INFO] finished frobbing spmc_buffer-0.5.1
[INFO] frobbed toml for spmc_buffer-0.5.1 written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/spmc_buffer/0.5.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing spmc_buffer-0.5.1 against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/spmc_buffer/0.5.1:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] dd8c3fe648b2a9dbc0d31ee76a717e6157aa9a38cf315ed84088b05ca59875ee
[INFO] running `"docker" "start" "-a" "dd8c3fe648b2a9dbc0d31ee76a717e6157aa9a38cf315ed84088b05ca59875ee"`
[INFO] [stderr]    Compiling testbench v0.6.0
[INFO] [stderr]    Compiling spmc_buffer v0.5.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `"docker" "inspect" "dd8c3fe648b2a9dbc0d31ee76a717e6157aa9a38cf315ed84088b05ca59875ee"`
[INFO] running `"docker" "rm" "-f" "dd8c3fe648b2a9dbc0d31ee76a717e6157aa9a38cf315ed84088b05ca59875ee"`
[INFO] [stdout] dd8c3fe648b2a9dbc0d31ee76a717e6157aa9a38cf315ed84088b05ca59875ee
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/spmc_buffer/0.5.1:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 245e3e5190dec62f63d1c288f7aa279e8e6ff7abac29418326790e4922ff277a
[INFO] running `"docker" "start" "-a" "245e3e5190dec62f63d1c288f7aa279e8e6ff7abac29418326790e4922ff277a"`
[INFO] [stderr]    Compiling spmc_buffer v0.5.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved import `testbench::race_cell::UsizeRaceCell`
[INFO] [stderr]    --> src/lib.rs:541:39
[INFO] [stderr]     |
[INFO] [stderr] 541 |     use testbench::race_cell::{Racey, UsizeRaceCell};
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^ no `UsizeRaceCell` in `race_cell`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `spmc_buffer`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "245e3e5190dec62f63d1c288f7aa279e8e6ff7abac29418326790e4922ff277a"`
[INFO] running `"docker" "rm" "-f" "245e3e5190dec62f63d1c288f7aa279e8e6ff7abac29418326790e4922ff277a"`
[INFO] [stdout] 245e3e5190dec62f63d1c288f7aa279e8e6ff7abac29418326790e4922ff277a