[INFO] fetching crate rustc-ap-rustc_errors 727.0.0...
[INFO] documenting rustc-ap-rustc_errors-727.0.0 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate rustc-ap-rustc_errors 727.0.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate rustc-ap-rustc_errors 727.0.0 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustc-ap-rustc_errors 727.0.0
[INFO] finished tweaking crates.io crate rustc-ap-rustc_errors 727.0.0
[INFO] tweaked toml for crates.io crate rustc-ap-rustc_errors 727.0.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-ap-rustc_data_structures v727.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast v727.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lint_defs v727.0.0
[INFO] [stderr]   Downloaded measureme v9.1.2
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v727.0.0
[INFO] [stderr]   Downloaded annotate-snippets v0.8.0
[INFO] [stderr]   Downloaded termize v0.1.1
[INFO] [stderr]   Downloaded rustc-ap-rustc_serialize v727.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_index v727.0.0
[INFO] [stderr]   Downloaded rustc-rayon-core v0.3.2
[INFO] [stderr]   Downloaded rustc-ap-rustc_graphviz v727.0.0
[INFO] [stderr]   Downloaded rustc-rayon v0.3.2
[INFO] [stderr]   Downloaded rustc-ap-rustc_arena v727.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_span v727.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_macros v727.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_target v727.0.0
[INFO] [stderr]   Downloaded memmap2 v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe4d879157303a31709b6459c0e9d6732d9d134cff395558926b5e32e233bb58
[INFO] running `Command { std: "docker" "start" "-a" "fe4d879157303a31709b6459c0e9d6732d9d134cff395558926b5e32e233bb58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe4d879157303a31709b6459c0e9d6732d9d134cff395558926b5e32e233bb58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe4d879157303a31709b6459c0e9d6732d9d134cff395558926b5e32e233bb58", kill_on_drop: false }`
[INFO] [stdout] fe4d879157303a31709b6459c0e9d6732d9d134cff395558926b5e32e233bb58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 877c71e87ddf824cbee747e12f870306a387dfaa8c91fba125d777066190a980
[INFO] running `Command { std: "docker" "start" "-a" "877c71e87ddf824cbee747e12f870306a387dfaa8c91fba125d777066190a980", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling psm v0.1.21
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling rustc-rayon-core v0.3.2
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking lock_api v0.4.9
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/smallvec-1.10.0/src/lib.rs:83:37
[INFO] [stdout]    |
[INFO] [stdout] 83 | #![cfg_attr(feature = "may_dangle", feature(dropck_eyepatch))]
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smallvec` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "877c71e87ddf824cbee747e12f870306a387dfaa8c91fba125d777066190a980", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "877c71e87ddf824cbee747e12f870306a387dfaa8c91fba125d777066190a980", kill_on_drop: false }`
[INFO] [stdout] 877c71e87ddf824cbee747e12f870306a387dfaa8c91fba125d777066190a980
