[INFO] cloning repository https://github.com/ZhouHansen/async_rust_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ZhouHansen/async_rust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZhouHansen%2Fasync_rust_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZhouHansen%2Fasync_rust_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 35a57a71145390d68ca6d19ee16905543662d726
[INFO] testing ZhouHansen/async_rust_playground against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZhouHansen%2Fasync_rust_playground" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ZhouHansen/async_rust_playground on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ZhouHansen/async_rust_playground
[INFO] finished tweaking git repo https://github.com/ZhouHansen/async_rust_playground
[INFO] tweaked toml for git repo https://github.com/ZhouHansen/async_rust_playground written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/ZhouHansen/async_rust_playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fdc98ffbf2c125dc04fea72b7cc966bb64755a8737e6269a9120cb008953dbb
[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" "9fdc98ffbf2c125dc04fea72b7cc966bb64755a8737e6269a9120cb008953dbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fdc98ffbf2c125dc04fea72b7cc966bb64755a8737e6269a9120cb008953dbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fdc98ffbf2c125dc04fea72b7cc966bb64755a8737e6269a9120cb008953dbb", kill_on_drop: false }`
[INFO] [stdout] 9fdc98ffbf2c125dc04fea72b7cc966bb64755a8737e6269a9120cb008953dbb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+1.49.0" "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] 0e59e8004c34e6f6c7f4999c5445594e180ba40528bccd1767225098c9c2e920
[INFO] running `Command { std: "docker" "start" "-a" "0e59e8004c34e6f6c7f4999c5445594e180ba40528bccd1767225098c9c2e920", kill_on_drop: false }`
[INFO] [stderr]    Compiling async_rust_playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/task_exc.rs:24:19
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub task: Box<ToyTask + Send>,
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: use `dyn`: `dyn ToyTask + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.19s
[INFO] running `Command { std: "docker" "inspect" "0e59e8004c34e6f6c7f4999c5445594e180ba40528bccd1767225098c9c2e920", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e59e8004c34e6f6c7f4999c5445594e180ba40528bccd1767225098c9c2e920", kill_on_drop: false }`
[INFO] [stdout] 0e59e8004c34e6f6c7f4999c5445594e180ba40528bccd1767225098c9c2e920
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9373e96a37cb9a6579fc1d3eaf13d666211e13b43787f7694d974b05a671ff21
[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" "9373e96a37cb9a6579fc1d3eaf13d666211e13b43787f7694d974b05a671ff21", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/task_exc.rs:24:19
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub task: Box<ToyTask + Send>,
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: use `dyn`: `dyn ToyTask + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling async_rust_playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/task_exc.rs:24:19
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub task: Box<ToyTask + Send>,
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: use `dyn`: `dyn ToyTask + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "9373e96a37cb9a6579fc1d3eaf13d666211e13b43787f7694d974b05a671ff21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9373e96a37cb9a6579fc1d3eaf13d666211e13b43787f7694d974b05a671ff21", kill_on_drop: false }`
[INFO] [stdout] 9373e96a37cb9a6579fc1d3eaf13d666211e13b43787f7694d974b05a671ff21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 20bc06a064f4a5e0cce2ccc2677c2feda22a404fa51db4351b3956179ad38a7b
[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" "20bc06a064f4a5e0cce2ccc2677c2feda22a404fa51db4351b3956179ad38a7b", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/task_exc.rs:24:19
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub task: Box<ToyTask + Send>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^ help: use `dyn`: `dyn ToyTask + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/task_exc.rs:24:19
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub task: Box<ToyTask + Send>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^ help: use `dyn`: `dyn ToyTask + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/async_rust_playground-327e7a65ea6d2f89
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/async_rust_playground-b0e6014bf65fd44b
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests async_rust_playground
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "20bc06a064f4a5e0cce2ccc2677c2feda22a404fa51db4351b3956179ad38a7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20bc06a064f4a5e0cce2ccc2677c2feda22a404fa51db4351b3956179ad38a7b", kill_on_drop: false }`
[INFO] [stdout] 20bc06a064f4a5e0cce2ccc2677c2feda22a404fa51db4351b3956179ad38a7b