[INFO] fetching crate credent_cli_model 0.4.1...
[INFO] testing credent_cli_model-0.4.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate credent_cli_model 0.4.1 into /workspace/builds/worker-36/source
[INFO] validating manifest of crates.io crate credent_cli_model 0.4.1 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 credent_cli_model 0.4.1
[INFO] finished tweaking crates.io crate credent_cli_model 0.4.1
[INFO] tweaked toml for crates.io crate credent_cli_model 0.4.1 written to /workspace/builds/worker-36/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] 3d1592a922800f186fa07c0a6777ddcb81f63e1ab320fb630e0cee3ee08f028f
[INFO] running `Command { std: "docker" "start" "-a" "3d1592a922800f186fa07c0a6777ddcb81f63e1ab320fb630e0cee3ee08f028f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d1592a922800f186fa07c0a6777ddcb81f63e1ab320fb630e0cee3ee08f028f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d1592a922800f186fa07c0a6777ddcb81f63e1ab320fb630e0cee3ee08f028f", kill_on_drop: false }`
[INFO] [stdout] 3d1592a922800f186fa07c0a6777ddcb81f63e1ab320fb630e0cee3ee08f028f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] 729617fd5be7aaabd2de091a5a0ee588003777481183db401fa9b0662cf062b8
[INFO] running `Command { std: "docker" "start" "-a" "729617fd5be7aaabd2de091a5a0ee588003777481183db401fa9b0662cf062b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling credent_cli_model v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: `credent` needs either the "backend-smol" or "backend-tokio" feature to be enabled.
[INFO] [stdout]   --> src/error.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | / compile_error!(
[INFO] [stdout] 11 | |     r#"`credent` needs either the "backend-smol" or "backend-tokio" feature to be enabled."#
[INFO] [stdout] 12 | | );
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `IoError` in this scope
[INFO] [stdout]   --> src/error.rs:28:16
[INFO] [stdout]    |
[INFO] [stdout] 28 |         error: IoError,
[INFO] [stdout]    |                ^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `IoError` in this scope
[INFO] [stdout]   --> src/error.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 |     StdErrFlush(IoError),
[INFO] [stdout]    |                 ^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `credent_cli_model` due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "729617fd5be7aaabd2de091a5a0ee588003777481183db401fa9b0662cf062b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "729617fd5be7aaabd2de091a5a0ee588003777481183db401fa9b0662cf062b8", kill_on_drop: false }`
[INFO] [stdout] 729617fd5be7aaabd2de091a5a0ee588003777481183db401fa9b0662cf062b8