[INFO] crate mioco 0.8.1 is already in cache
[INFO] checking mioco-0.8.1 against nightly-2019-10-27 for pr-65897
[INFO] extracting crate mioco 0.8.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate mioco 0.8.1 on toolchain nightly-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mioco 0.8.1
[INFO] finished tweaking crates.io crate mioco 0.8.1
[INFO] tweaked toml for crates.io crate mioco 0.8.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "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=allow" "-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" "+nightly-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 930fe61253a1090c3348e919e8a8ea50db08f85823ba340220ae0055c49f54c8
[INFO] running `"docker" "start" "-a" "930fe61253a1090c3348e919e8a8ea50db08f85823ba340220ae0055c49f54c8"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking bytes v0.3.0
[INFO] [stderr]     Checking slab v0.1.3
[INFO] [stderr]     Checking owning_ref v0.2.4
[INFO] [stderr]     Checking slab v0.2.0
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling context v1.0.1
[INFO] [stderr]     Checking miow v0.1.5
[INFO] [stderr]     Checking mio v0.5.1
[INFO] [stderr]     Checking mioco v0.8.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0446]: private type `src::sync::mpsc::ReceiverCore<T>` in public interface
[INFO] [stderr]   --> src/sync/mpsc.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | struct ReceiverCore<T> {
[INFO] [stderr]    | - `src::sync::mpsc::ReceiverCore<T>` declared as private
[INFO] [stderr] ...
[INFO] [stderr] 35 |     type Raw = ReceiverCore<T>;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
[INFO] [stderr] 
[INFO] [stderr] error[E0446]: private type `src::timer::TimerCore` in public interface
[INFO] [stderr]   --> src/timer.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | struct TimerCore {
[INFO] [stderr]    | - `src::timer::TimerCore` declared as private
[INFO] [stderr] ...
[INFO] [stderr] 47 |     type Raw = TimerCore;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^ can't leak private type
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0446`.
[INFO] [stderr] error: could not compile `mioco`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0446]: private type `src::sync::mpsc::ReceiverCore<T>` in public interface
[INFO] [stderr]   --> src/sync/mpsc.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | struct ReceiverCore<T> {
[INFO] [stderr]    | - `src::sync::mpsc::ReceiverCore<T>` declared as private
[INFO] [stderr] ...
[INFO] [stderr] 35 |     type Raw = ReceiverCore<T>;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
[INFO] [stderr] 
[INFO] [stderr] error[E0446]: private type `src::timer::TimerCore` in public interface
[INFO] [stderr]   --> src/timer.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | struct TimerCore {
[INFO] [stderr]    | - `src::timer::TimerCore` declared as private
[INFO] [stderr] ...
[INFO] [stderr] 47 |     type Raw = TimerCore;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^ can't leak private type
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0446`.
[INFO] [stderr] error: could not compile `mioco`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "930fe61253a1090c3348e919e8a8ea50db08f85823ba340220ae0055c49f54c8"`
[INFO] running `"docker" "rm" "-f" "930fe61253a1090c3348e919e8a8ea50db08f85823ba340220ae0055c49f54c8"`
[INFO] [stdout] 930fe61253a1090c3348e919e8a8ea50db08f85823ba340220ae0055c49f54c8