[INFO] fetching crate storagevec 0.2.1...
[INFO] documenting storagevec-0.2.1 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate storagevec 0.2.1 into /workspace/builds/worker-104/source
[INFO] validating manifest of crates.io crate storagevec 0.2.1 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate storagevec 0.2.1
[INFO] finished tweaking crates.io crate storagevec 0.2.1
[INFO] tweaked toml for crates.io crate storagevec 0.2.1 written to /workspace/builds/worker-104/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tinymap v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e7046259ab91238eb0677a1bbf9dc7982c6685df60bd195b7e9cc96da32513c2
[INFO] running `Command { std: "docker" "start" "-a" "e7046259ab91238eb0677a1bbf9dc7982c6685df60bd195b7e9cc96da32513c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7046259ab91238eb0677a1bbf9dc7982c6685df60bd195b7e9cc96da32513c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7046259ab91238eb0677a1bbf9dc7982c6685df60bd195b7e9cc96da32513c2", kill_on_drop: false }`
[INFO] [stdout] e7046259ab91238eb0677a1bbf9dc7982c6685df60bd195b7e9cc96da32513c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fed8aa344ae8346d9a5398c727fd81e5dfa0c29102439a76748cd0eb79e550b3
[INFO] running `Command { std: "docker" "start" "-a" "fed8aa344ae8346d9a5398c727fd81e5dfa0c29102439a76748cd0eb79e550b3", kill_on_drop: false }`
[INFO] [stderr]     Checking tinyvec v1.3.1
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tinyvec-1.3.1/src/lib.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   feature(min_const_generics, array_map)
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `min_const_generics` has been stable since 1.51.0 and no longer requires an attribute to enable
[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 `tinyvec` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "fed8aa344ae8346d9a5398c727fd81e5dfa0c29102439a76748cd0eb79e550b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fed8aa344ae8346d9a5398c727fd81e5dfa0c29102439a76748cd0eb79e550b3", kill_on_drop: false }`
[INFO] [stdout] fed8aa344ae8346d9a5398c727fd81e5dfa0c29102439a76748cd0eb79e550b3
