[INFO] cloning repository https://github.com/ejmahler/unity_coroutines
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ejmahler/unity_coroutines" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fejmahler%2Funity_coroutines"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fejmahler%2Funity_coroutines'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 54589ee4e451efe5645749719c10ecc4c4cac6f8
[INFO] checking ejmahler/unity_coroutines against beta-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fejmahler%2Funity_coroutines" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ejmahler/unity_coroutines on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ejmahler/unity_coroutines
[INFO] finished tweaking git repo https://github.com/ejmahler/unity_coroutines
[INFO] tweaked toml for git repo https://github.com/ejmahler/unity_coroutines written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/ejmahler/unity_coroutines already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-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] 97d6291cd9ab0aec985d5914b511f71ec9123fd6f91e02ba41392363502b40b2
[INFO] running `"docker" "start" "-a" "97d6291cd9ab0aec985d5914b511f71ec9123fd6f91e02ba41392363502b40b2"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking unity_coroutines v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(generators, generator_trait)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `resume` found for type `std::boxed::Box<(dyn std::ops::Generator<Return = (), Yield = coroutine::CoroutineCondition> + 'static)>` in the current scope
[INFO] [stderr]   --> src/coroutine.rs:62:45
[INFO] [stderr]    |
[INFO] [stderr] 62 |                 let resume_result = coroutine.generator.resume();
[INFO] [stderr]    |                                                         ^^^^^^ method not found in `std::boxed::Box<(dyn std::ops::Generator<Return = (), Yield = coroutine::CoroutineCondition> + 'static)>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `unity_coroutines`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(generators, generator_trait)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `resume` found for type `std::boxed::Box<(dyn std::ops::Generator<Return = (), Yield = coroutine::CoroutineCondition> + 'static)>` in the current scope
[INFO] [stderr]   --> src/coroutine.rs:62:45
[INFO] [stderr]    |
[INFO] [stderr] 62 |                 let resume_result = coroutine.generator.resume();
[INFO] [stderr]    |                                                         ^^^^^^ method not found in `std::boxed::Box<(dyn std::ops::Generator<Return = (), Yield = coroutine::CoroutineCondition> + 'static)>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `unity_coroutines`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "97d6291cd9ab0aec985d5914b511f71ec9123fd6f91e02ba41392363502b40b2"`
[INFO] running `"docker" "rm" "-f" "97d6291cd9ab0aec985d5914b511f71ec9123fd6f91e02ba41392363502b40b2"`
[INFO] [stdout] 97d6291cd9ab0aec985d5914b511f71ec9123fd6f91e02ba41392363502b40b2