[INFO] fetching crate spmc_buffer 0.5.1...
[INFO] checking spmc_buffer-0.5.1 against try#c8bdaa84ec1b37f18f30375e196a65b7602f3790 for pr-73345
[INFO] extracting crate spmc_buffer 0.5.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate spmc_buffer 0.5.1 on toolchain c8bdaa84ec1b37f18f30375e196a65b7602f3790
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate spmc_buffer 0.5.1
[INFO] finished tweaking crates.io crate spmc_buffer 0.5.1
[INFO] tweaked toml for crates.io crate spmc_buffer 0.5.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded testbench v0.7.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 50e5e26dc4eb61fadf7ae3fc96f4b1d67d1f9d8f930cd1c7cce56721c05a2367
[INFO] running `Command { std: "docker" "start" "-a" "50e5e26dc4eb61fadf7ae3fc96f4b1d67d1f9d8f930cd1c7cce56721c05a2367", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50e5e26dc4eb61fadf7ae3fc96f4b1d67d1f9d8f930cd1c7cce56721c05a2367", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50e5e26dc4eb61fadf7ae3fc96f4b1d67d1f9d8f930cd1c7cce56721c05a2367", kill_on_drop: false }`
[INFO] [stdout] 50e5e26dc4eb61fadf7ae3fc96f4b1d67d1f9d8f930cd1c7cce56721c05a2367
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d4ede2e2ca714a7de9fc3b3e3b1eaa8ff960ffbdb526056580b210b0bf79f3a1
[INFO] running `Command { std: "docker" "start" "-a" "d4ede2e2ca714a7de9fc3b3e3b1eaa8ff960ffbdb526056580b210b0bf79f3a1", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking testbench v0.7.3
[INFO] [stderr]     Checking spmc_buffer v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `testbench::race_cell::UsizeRaceCell`
[INFO] [stdout]    --> src/lib.rs:541:39
[INFO] [stdout]     |
[INFO] [stdout] 541 |     use testbench::race_cell::{Racey, UsizeRaceCell};
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^ no `UsizeRaceCell` in `race_cell`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spmc_buffer`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "d4ede2e2ca714a7de9fc3b3e3b1eaa8ff960ffbdb526056580b210b0bf79f3a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4ede2e2ca714a7de9fc3b3e3b1eaa8ff960ffbdb526056580b210b0bf79f3a1", kill_on_drop: false }`
[INFO] [stdout] d4ede2e2ca714a7de9fc3b3e3b1eaa8ff960ffbdb526056580b210b0bf79f3a1