[INFO] fetching crate dockviewers_core 0.2.2...
[INFO] testing dockviewers_core-0.2.2 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate dockviewers_core 0.2.2 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate dockviewers_core 0.2.2
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate dockviewers_core 0.2.2
[INFO] tweaked toml for crates.io crate dockviewers_core 0.2.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate dockviewers_core 0.2.2 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate dockviewers_core 0.2.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.125
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.125
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.125
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.125
[INFO] [stderr]   Downloaded facet-macros v0.46.5
[INFO] [stderr]   Downloaded facet-macro-types v0.46.5
[INFO] [stderr]   Downloaded strip-ansi-escapes v0.2.1
[INFO] [stderr]   Downloaded tracing-error v0.2.1
[INFO] [stderr]   Downloaded function_name-proc-macro v0.3.0
[INFO] [stderr]   Downloaded const-fnv1a-hash v1.1.0
[INFO] [stderr]   Downloaded facet-dessert v0.46.0
[INFO] [stderr]   Downloaded strum v0.28.0
[INFO] [stderr]   Downloaded facet-path v0.46.5
[INFO] [stderr]   Downloaded impls v1.0.3
[INFO] [stderr]   Downloaded mutants v0.0.3
[INFO] [stderr]   Downloaded arraydeque v0.5.1
[INFO] [stderr]   Downloaded erased-serde v0.4.10
[INFO] [stderr]   Downloaded rust-ini v0.21.3
[INFO] [stderr]   Downloaded ordered-multimap v0.7.3
[INFO] [stderr]   Downloaded json5 v0.4.1
[INFO] [stderr]   Downloaded pest_derive v2.9.0
[INFO] [stderr]   Downloaded macro-attr v0.2.0
[INFO] [stderr]   Downloaded function_name v0.3.0
[INFO] [stderr]   Downloaded serde-untagged v0.1.9
[INFO] [stderr]   Downloaded facet-macro-parse v0.46.5
[INFO] [stderr]   Downloaded hashlink v0.11.1
[INFO] [stderr]   Downloaded dlv-list v0.5.2
[INFO] [stderr]   Downloaded pest_generator v2.9.0
[INFO] [stderr]   Downloaded xdg v3.0.0
[INFO] [stderr]   Downloaded smallvec v2.0.0-alpha.12
[INFO] [stderr]   Downloaded facet-solver v0.46.5
[INFO] [stderr]   Downloaded pest_meta v2.9.0
[INFO] [stderr]   Downloaded clap_derive v4.6.4
[INFO] [stderr]   Downloaded toml v1.1.2+spec-1.1.0
[INFO] [stderr]   Downloaded vte v0.14.1
[INFO] [stderr]   Downloaded config v0.15.25
[INFO] [stderr]   Downloaded v_utils_macros v2.12.5
[INFO] [stderr]   Downloaded facet-toml v0.46.1
[INFO] [stderr]   Downloaded facet-macros-impl v0.46.5
[INFO] [stderr]   Downloaded bon v3.9.3
[INFO] [stderr]   Downloaded bon-macros v3.9.3
[INFO] [stderr]   Downloaded facet-format v0.47.1
[INFO] [stderr]   Downloaded unsynn v0.3.0
[INFO] [stderr]   Downloaded yaml-rust2 v0.11.0
[INFO] [stderr]   Downloaded js-sys v0.3.102
[INFO] [stderr]   Downloaded v_utils v2.17.7
[INFO] [stderr]   Downloaded zerocopy-derive v0.8.54
[INFO] [stderr]   Downloaded facet-json v0.46.1
[INFO] [stderr]   Downloaded ron v0.12.2
[INFO] [stderr]   Downloaded pest v2.9.0
[INFO] [stderr]   Downloaded regex v1.13.0
[INFO] [stderr]   Downloaded facet-core v0.46.5
[INFO] [stderr]   Downloaded facet v0.46.5
[INFO] [stderr]   Downloaded iddqd v0.4.6
[INFO] [stderr]   Downloaded facet-reflect v0.46.5
[INFO] [stderr]   Downloaded zerocopy v0.8.54
[INFO] [stderr]   Downloaded ustr v1.1.0
[INFO] [stderr]   Downloaded web-sys v0.3.102
[INFO] [stderr]   Downloaded regex-automata v0.4.15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 414a89a077a595cbe0c5d9bfe1ce40108e720fa6e8f5aa6c52b0e74638403b5c
[INFO] running `Command { std: "docker" "start" "414a89a077a595cbe0c5d9bfe1ce40108e720fa6e8f5aa6c52b0e74638403b5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "414a89a077a595cbe0c5d9bfe1ce40108e720fa6e8f5aa6c52b0e74638403b5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "414a89a077a595cbe0c5d9bfe1ce40108e720fa6e8f5aa6c52b0e74638403b5c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "414a89a077a595cbe0c5d9bfe1ce40108e720fa6e8f5aa6c52b0e74638403b5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "414a89a077a595cbe0c5d9bfe1ce40108e720fa6e8f5aa6c52b0e74638403b5c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling dockviewers_core v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_json v1.0.150
[INFO] [stderr]    Compiling syn v2.0.118
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[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(default_field_values)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dockviewers_core` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "414a89a077a595cbe0c5d9bfe1ce40108e720fa6e8f5aa6c52b0e74638403b5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "414a89a077a595cbe0c5d9bfe1ce40108e720fa6e8f5aa6c52b0e74638403b5c", kill_on_drop: false }`
[INFO] [stdout] 414a89a077a595cbe0c5d9bfe1ce40108e720fa6e8f5aa6c52b0e74638403b5c
