[INFO] fetching crate simple-generators-util 0.1.1...
[INFO] testing simple-generators-util-0.1.1 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate simple-generators-util 0.1.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate simple-generators-util 0.1.1 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simple-generators-util 0.1.1
[INFO] finished tweaking crates.io crate simple-generators-util 0.1.1
[INFO] tweaked toml for crates.io crate simple-generators-util 0.1.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e35d7ca62fe4a81bf5beba4a800371837f8125a42ca6de3bdbb19425a0ea98bf
[INFO] running `Command { std: "docker" "start" "-a" "e35d7ca62fe4a81bf5beba4a800371837f8125a42ca6de3bdbb19425a0ea98bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e35d7ca62fe4a81bf5beba4a800371837f8125a42ca6de3bdbb19425a0ea98bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e35d7ca62fe4a81bf5beba4a800371837f8125a42ca6de3bdbb19425a0ea98bf", kill_on_drop: false }`
[INFO] [stdout] e35d7ca62fe4a81bf5beba4a800371837f8125a42ca6de3bdbb19425a0ea98bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] faad5c98b49149b13590577f07d3877a7d0c5157fb87a627ea682d5416472f06
[INFO] running `Command { std: "docker" "start" "-a" "faad5c98b49149b13590577f07d3877a7d0c5157fb87a627ea682d5416472f06", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling pin-project-internal v0.4.29
[INFO] [stderr]    Compiling pin-project v0.4.29
[INFO] [stderr]    Compiling simple-generators-util v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generator_trait, never_type)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generator_trait, never_type)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `simple-generators-util` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "faad5c98b49149b13590577f07d3877a7d0c5157fb87a627ea682d5416472f06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faad5c98b49149b13590577f07d3877a7d0c5157fb87a627ea682d5416472f06", kill_on_drop: false }`
[INFO] [stdout] faad5c98b49149b13590577f07d3877a7d0c5157fb87a627ea682d5416472f06