[INFO] cloning repository https://github.com/ejmahler/unity_coroutines
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fejmahler%2Funity_coroutines'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 54589ee4e451efe5645749719c10ecc4c4cac6f8
[INFO] testing ejmahler/unity_coroutines against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fejmahler%2Funity_coroutines" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ejmahler/unity_coroutines on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-12/source/Cargo.toml
[INFO] crate git repo https://github.com/ejmahler/unity_coroutines already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 09f6a7bd511473149c64c2e8e54ae51fb8c56f4af9e0fd169503584edbb2833b
[INFO] running `Command { std: "docker" "start" "-a" "09f6a7bd511473149c64c2e8e54ae51fb8c56f4af9e0fd169503584edbb2833b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09f6a7bd511473149c64c2e8e54ae51fb8c56f4af9e0fd169503584edbb2833b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09f6a7bd511473149c64c2e8e54ae51fb8c56f4af9e0fd169503584edbb2833b", kill_on_drop: false }`
[INFO] [stdout] 09f6a7bd511473149c64c2e8e54ae51fb8c56f4af9e0fd169503584edbb2833b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5bcb5a63912b8f954e9543ab70b3d61546a9ac68369986b42ea063dbcc084fa0
[INFO] running `Command { std: "docker" "start" "-a" "5bcb5a63912b8f954e9543ab70b3d61546a9ac68369986b42ea063dbcc084fa0", kill_on_drop: false }`
[INFO] [stderr]    Compiling unity_coroutines v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generators, generator_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/coroutine.rs:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 |     YieldInstruction(Box<YieldInstruction>),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn YieldInstruction`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/coroutine.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |     generator: Box<Generator<Yield=CoroutineCondition, Return=()>>,
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Generator<Yield=CoroutineCondition, Return=()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/coroutine.rs:23:40
[INFO] [stdout]    |
[INFO] [stdout] 23 |     queued_coroutines: HashMap<usize, Box<Generator<Yield=CoroutineCondition, Return=()>>>,
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Generator<Yield=CoroutineCondition, Return=()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `resume` found for struct `Box<(dyn Generator<Return = (), Yield = CoroutineCondition> + 'static)>` in the current scope
[INFO] [stdout]   --> src/coroutine.rs:62:45
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 let resume_result = coroutine.generator.resume();
[INFO] [stdout]    |                                                         ^^^^^^ method not found in `Box<(dyn Generator<Return = (), Yield = CoroutineCondition> + 'static)>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `unity_coroutines`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "5bcb5a63912b8f954e9543ab70b3d61546a9ac68369986b42ea063dbcc084fa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bcb5a63912b8f954e9543ab70b3d61546a9ac68369986b42ea063dbcc084fa0", kill_on_drop: false }`
[INFO] [stdout] 5bcb5a63912b8f954e9543ab70b3d61546a9ac68369986b42ea063dbcc084fa0