[INFO] fetching crate ringbuf 0.1.6...
[INFO] checking ringbuf-0.1.6 against master#446e5e57b667c841ba3ebb4b41b44fb98bd3af4b for pr-65294
[INFO] extracting crate ringbuf 0.1.6 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate ringbuf 0.1.6 on toolchain 446e5e57b667c841ba3ebb4b41b44fb98bd3af4b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ringbuf 0.1.6
[INFO] finished tweaking crates.io crate ringbuf 0.1.6
[INFO] tweaked toml for crates.io crate ringbuf 0.1.6 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "/opt/rustwide/cargo-home/bin/cargo" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 707bdf124d0edeb1350fb2e1c93d860930cda87f49e2969cb8fe320250ecf65b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "707bdf124d0edeb1350fb2e1c93d860930cda87f49e2969cb8fe320250ecf65b"`
[INFO] [stderr]    Compiling ringbuf v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/lib.rs:314:55
[INFO] [stderr]     |
[INFO] [stderr] 314 |             mem::drop(mem::replace(elem_ref, unsafe { mem::uninitialized() }));
[INFO] [stderr]     |                                                       ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/lib.rs:613:52
[INFO] [stderr]     |
[INFO] [stderr] 613 |             let elem = mem::replace(&mut slice[0], mem::uninitialized());
[INFO] [stderr]     |                                                    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/lib.rs:314:55
[INFO] [stderr]     |
[INFO] [stderr] 314 |             mem::drop(mem::replace(elem_ref, unsafe { mem::uninitialized() }));
[INFO] [stderr]     |                                                       ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/lib.rs:613:52
[INFO] [stderr]     |
[INFO] [stderr] 613 |             let elem = mem::replace(&mut slice[0], mem::uninitialized());
[INFO] [stderr]     |                                                    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.16s
[INFO] running `"docker" "inspect" "707bdf124d0edeb1350fb2e1c93d860930cda87f49e2969cb8fe320250ecf65b"`
[INFO] running `"docker" "rm" "-f" "707bdf124d0edeb1350fb2e1c93d860930cda87f49e2969cb8fe320250ecf65b"`
[INFO] [stdout] 707bdf124d0edeb1350fb2e1c93d860930cda87f49e2969cb8fe320250ecf65b