[INFO] cloning repository https://github.com/SirVer/mioco_bug
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirVer%2Fmioco_bug'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25905b4b339a8ac866ec1949d6a47535e3489105
[INFO] checking SirVer/mioco_bug against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirVer%2Fmioco_bug" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SirVer/mioco_bug on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-7/source/Cargo.toml
[INFO] crate git repo https://github.com/SirVer/mioco_bug already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 874b61216edb40fc5f7d0db80ba0b0677abc949123b1e9874c9cd7a7cc69eec4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "874b61216edb40fc5f7d0db80ba0b0677abc949123b1e9874c9cd7a7cc69eec4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "874b61216edb40fc5f7d0db80ba0b0677abc949123b1e9874c9cd7a7cc69eec4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "874b61216edb40fc5f7d0db80ba0b0677abc949123b1e9874c9cd7a7cc69eec4", kill_on_drop: false }`
[INFO] [stdout] 874b61216edb40fc5f7d0db80ba0b0677abc949123b1e9874c9cd7a7cc69eec4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f243aea9e4996bd335cc7b5dcfa5156dbb07def8d2cce960420460a202ae4083
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f243aea9e4996bd335cc7b5dcfa5156dbb07def8d2cce960420460a202ae4083", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcc v0.3.32
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]     Checking num_cpus v0.2.13
[INFO] [stderr]     Checking time v0.1.35
[INFO] [stderr]     Checking nix v0.6.0
[INFO] [stderr]     Checking miow v0.1.3
[INFO] [stderr]     Checking mio v0.5.1
[INFO] [stderr]    Compiling context v1.0.0
[INFO] [stderr]     Checking mioco v0.8.0
[INFO] [stdout] error[E0446]: private type `src::sync::mpsc::ReceiverCore<T>` in public interface
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mioco-0.8.0/src/sync/mpsc.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct ReceiverCore<T> {
[INFO] [stdout]    | - `src::sync::mpsc::ReceiverCore<T>` declared as private
[INFO] [stdout] ...
[INFO] [stdout] 35 |     type Raw = ReceiverCore<T>;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0446]: private type `src::timer::TimerCore` in public interface
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mioco-0.8.0/src/timer.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct TimerCore {
[INFO] [stdout]    | - `src::timer::TimerCore` declared as private
[INFO] [stdout] ...
[INFO] [stdout] 47 |     type Raw = TimerCore;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^ can't leak private type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0446`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mioco`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f243aea9e4996bd335cc7b5dcfa5156dbb07def8d2cce960420460a202ae4083", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f243aea9e4996bd335cc7b5dcfa5156dbb07def8d2cce960420460a202ae4083", kill_on_drop: false }`
[INFO] [stdout] f243aea9e4996bd335cc7b5dcfa5156dbb07def8d2cce960420460a202ae4083