[INFO] fetching crate staticvec 0.11.2...
[INFO] testing staticvec-0.11.2 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate staticvec 0.11.2 into /workspace/builds/worker-105/source
[INFO] validating manifest of crates.io crate staticvec 0.11.2 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate staticvec 0.11.2
[INFO] removed 3 missing examples
[INFO] removed 3 missing tests
[INFO] finished tweaking crates.io crate staticvec 0.11.2
[INFO] tweaked toml for crates.io crate staticvec 0.11.2 written to /workspace/builds/worker-105/source/Cargo.toml
[INFO] crate crates.io crate staticvec 0.11.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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 cool_asserts v1.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a813e859625b1731219eb4eea5a177f04092ed4d47545a2f8e61170fc38436a7
[INFO] running `Command { std: "docker" "start" "-a" "a813e859625b1731219eb4eea5a177f04092ed4d47545a2f8e61170fc38436a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a813e859625b1731219eb4eea5a177f04092ed4d47545a2f8e61170fc38436a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a813e859625b1731219eb4eea5a177f04092ed4d47545a2f8e61170fc38436a7", kill_on_drop: false }`
[INFO] [stdout] a813e859625b1731219eb4eea5a177f04092ed4d47545a2f8e61170fc38436a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 291b77b54eb4674221e315cdcdf70db8cf974de7216db10c575b64d11e72b556
[INFO] running `Command { std: "docker" "start" "-a" "291b77b54eb4674221e315cdcdf70db8cf974de7216db10c575b64d11e72b556", kill_on_drop: false }`
[INFO] [stderr]    Compiling staticvec v0.11.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | / #![feature(
[INFO] [stdout] 32 | |   adt_const_params,
[INFO] [stdout] 33 | |   const_assume,
[INFO] [stdout] 34 | |   const_eval_select,
[INFO] [stdout] ...  |
[INFO] [stdout] 66 | |   untagged_unions
[INFO] [stdout] 67 | | )]
[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:68:30
[INFO] [stdout]    |
[INFO] [stdout] 68 | #![cfg_attr(feature = "std", feature(read_buf))]
[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 `staticvec` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "291b77b54eb4674221e315cdcdf70db8cf974de7216db10c575b64d11e72b556", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "291b77b54eb4674221e315cdcdf70db8cf974de7216db10c575b64d11e72b556", kill_on_drop: false }`
[INFO] [stdout] 291b77b54eb4674221e315cdcdf70db8cf974de7216db10c575b64d11e72b556