[INFO] fetching crate coffeehouse 0.1.1...
[INFO] testing coffeehouse-0.1.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate coffeehouse 0.1.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate coffeehouse 0.1.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate coffeehouse 0.1.1
[INFO] finished tweaking crates.io crate coffeehouse 0.1.1
[INFO] tweaked toml for crates.io crate coffeehouse 0.1.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate coffeehouse 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d4087d840847fc6b47b21d5a5c4982dc0219e9ac5c4ea753c80d265157c3213
[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" "2d4087d840847fc6b47b21d5a5c4982dc0219e9ac5c4ea753c80d265157c3213", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d4087d840847fc6b47b21d5a5c4982dc0219e9ac5c4ea753c80d265157c3213", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d4087d840847fc6b47b21d5a5c4982dc0219e9ac5c4ea753c80d265157c3213", kill_on_drop: false }`
[INFO] [stdout] 2d4087d840847fc6b47b21d5a5c4982dc0219e9ac5c4ea753c80d265157c3213
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3dd5c130be82aee10be5dc432daa33752ef11943eaf251eb3901235fa3df3332
[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" "3dd5c130be82aee10be5dc432daa33752ef11943eaf251eb3901235fa3df3332", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling futures-core v0.3.12
[INFO] [stderr]    Compiling futures-task v0.3.12
[INFO] [stderr]    Compiling futures-sink v0.3.12
[INFO] [stderr]    Compiling tokio v1.2.0
[INFO] [stderr]    Compiling tracing v0.1.23
[INFO] [stderr]    Compiling mio v0.7.7
[INFO] [stderr]    Compiling openssl-sys v0.9.60
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]    Compiling idna v0.2.1
[INFO] [stderr]    Compiling futures-channel v0.3.12
[INFO] [stderr]    Compiling futures-util v0.3.12
[INFO] [stderr]    Compiling url v2.2.0
[INFO] [stderr]    Compiling openssl v0.10.32
[INFO] [stderr]    Compiling tokio-util v0.6.3
[INFO] [stderr]    Compiling tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling pin-project-internal v1.0.5
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling pin-project v1.0.5
[INFO] [stderr]    Compiling pin-project v0.4.27
[INFO] [stderr]    Compiling tracing-futures v0.2.4
[INFO] [stderr]    Compiling h2 v0.3.0
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling hyper v0.14.4
[INFO] [stderr]    Compiling serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling serde_json v1.0.62
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.0
[INFO] [stderr]    Compiling coffeehouse v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.14s
[INFO] running `Command { std: "docker" "inspect" "3dd5c130be82aee10be5dc432daa33752ef11943eaf251eb3901235fa3df3332", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dd5c130be82aee10be5dc432daa33752ef11943eaf251eb3901235fa3df3332", kill_on_drop: false }`
[INFO] [stdout] 3dd5c130be82aee10be5dc432daa33752ef11943eaf251eb3901235fa3df3332
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e74015fc3b812d59a1c64eda64c1a0cb013ca6ff5fd6ed30d57cfba3bdb271b
[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" "9e74015fc3b812d59a1c64eda64c1a0cb013ca6ff5fd6ed30d57cfba3bdb271b", kill_on_drop: false }`
[INFO] [stderr]    Compiling coffeehouse v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `tokio`
[INFO] [stdout]  --> examples/lydia.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[tokio::main]
[INFO] [stdout]   |   ^^^^^ use of undeclared crate or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0752]: `main` function is not allowed to be `async`
[INFO] [stdout]  --> examples/lydia.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | async fn main() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `main` function is not allowed to be `async`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0752.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `coffeehouse` due to 3 previous errors
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "9e74015fc3b812d59a1c64eda64c1a0cb013ca6ff5fd6ed30d57cfba3bdb271b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e74015fc3b812d59a1c64eda64c1a0cb013ca6ff5fd6ed30d57cfba3bdb271b", kill_on_drop: false }`
[INFO] [stdout] 9e74015fc3b812d59a1c64eda64c1a0cb013ca6ff5fd6ed30d57cfba3bdb271b