[INFO] fetching crate trillium-testing 0.3.1...
[INFO] testing trillium-testing-0.3.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate trillium-testing 0.3.1 into /workspace/builds/worker-30/source
[INFO] validating manifest of crates.io crate trillium-testing 0.3.1 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 trillium-testing 0.3.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate trillium-testing 0.3.1
[INFO] tweaked toml for crates.io crate trillium-testing 0.3.1 written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] crate crates.io crate trillium-testing 0.3.1 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded trillium-tokio v0.2.0
[INFO] [stderr]   Downloaded trillium-async-std v0.2.0
[INFO] [stderr]   Downloaded trillium-smol v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] 6cfd56078c4b0e87550560ec4afa673f44fb0ab482b46f90ac5d7db9a37ac725
[INFO] running `Command { std: "docker" "start" "-a" "6cfd56078c4b0e87550560ec4afa673f44fb0ab482b46f90ac5d7db9a37ac725", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cfd56078c4b0e87550560ec4afa673f44fb0ab482b46f90ac5d7db9a37ac725", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cfd56078c4b0e87550560ec4afa673f44fb0ab482b46f90ac5d7db9a37ac725", kill_on_drop: false }`
[INFO] [stdout] 6cfd56078c4b0e87550560ec4afa673f44fb0ab482b46f90ac5d7db9a37ac725
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] 7c904932723f83d370a8e7b117420a3cd475c5855e9443ca099a26774359cfec
[INFO] running `Command { std: "docker" "start" "-a" "7c904932723f83d370a8e7b117420a3cd475c5855e9443ca099a26774359cfec", 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] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling futures-io v0.3.16
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling memmem v0.1.1
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling smartstring v0.2.9
[INFO] [stderr]    Compiling simple-mutex v1.1.5
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling waker-set v0.2.0
[INFO] [stderr]    Compiling rlimit v0.6.2
[INFO] [stderr]    Compiling async-dup v1.2.2
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling smartcow v0.1.0
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling portpicker v0.1.1
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling trillium-tls-common v0.1.0
[INFO] [stderr]    Compiling pin-project v1.0.8
[INFO] [stderr]    Compiling stopper v0.2.0
[INFO] [stderr]    Compiling trillium-http v0.2.0
[INFO] [stderr]    Compiling trillium v0.2.0
[INFO] [stderr]    Compiling trillium-server-common v0.3.0
[INFO] [stderr]    Compiling trillium-testing v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: must enable smol, async-std, or tokio feature
[INFO] [stdout]    --> src/with_server.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |         compile_error!("must enable smol, async-std, or tokio feature");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: must enable smol, async-std, or tokio feature
[INFO] [stdout]    --> src/lib.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |         compile_error!("must enable smol, async-std, or tokio feature");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `trillium-testing` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "7c904932723f83d370a8e7b117420a3cd475c5855e9443ca099a26774359cfec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c904932723f83d370a8e7b117420a3cd475c5855e9443ca099a26774359cfec", kill_on_drop: false }`
[INFO] [stdout] 7c904932723f83d370a8e7b117420a3cd475c5855e9443ca099a26774359cfec