[INFO] cloning repository https://github.com/SirVer/mioco_bug
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SirVer/mioco_bug" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirVer%2Fmioco_bug"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirVer%2Fmioco_bug'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 25905b4b339a8ac866ec1949d6a47535e3489105
[INFO] testing SirVer/mioco_bug against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirVer%2Fmioco_bug" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SirVer/mioco_bug on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/SirVer/mioco_bug
[INFO] finished tweaking git repo https://github.com/SirVer/mioco_bug
[INFO] tweaked toml for git repo https://github.com/SirVer/mioco_bug written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/SirVer/mioco_bug already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "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=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5cb03caa5aeec82e6a4ee29872e55f9c562a6ac7abe6fac0402166c366fb6922
[INFO] running `"docker" "start" "-a" "5cb03caa5aeec82e6a4ee29872e55f9c562a6ac7abe6fac0402166c366fb6922"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.15
[INFO] [stderr]    Compiling cfg-if v0.1.0
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling gcc v0.3.32
[INFO] [stderr]    Compiling slab v0.1.3
[INFO] [stderr]    Compiling bytes v0.3.0
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]    Compiling thread-scoped v1.0.1
[INFO] [stderr]    Compiling slab v0.2.0
[INFO] [stderr]    Compiling spin v0.4.3
[INFO] [stderr]    Compiling owning_ref v0.2.0
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling net2 v0.2.26
[INFO] [stderr]    Compiling time v0.1.35
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling num_cpus v0.2.13
[INFO] [stderr]    Compiling context v1.0.0
[INFO] [stderr]    Compiling miow v0.1.3
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]    Compiling mio v0.5.1
[INFO] [stderr]    Compiling mioco v0.8.0
[INFO] [stderr] error[E0446]: private type `src::sync::mpsc::ReceiverCore<T>` in public interface
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mioco-0.8.0/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]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mioco-0.8.0/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" "5cb03caa5aeec82e6a4ee29872e55f9c562a6ac7abe6fac0402166c366fb6922"`
[INFO] running `"docker" "rm" "-f" "5cb03caa5aeec82e6a4ee29872e55f9c562a6ac7abe6fac0402166c366fb6922"`
[INFO] [stdout] 5cb03caa5aeec82e6a4ee29872e55f9c562a6ac7abe6fac0402166c366fb6922