[INFO] fetching crate generic-vec 0.1.2...
[INFO] documenting generic-vec-0.1.2 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate generic-vec 0.1.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate generic-vec 0.1.2 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 generic-vec 0.1.2
[INFO] finished tweaking crates.io crate generic-vec 0.1.2
[INFO] tweaked toml for crates.io crate generic-vec 0.1.2 written to /workspace/builds/worker-0/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] fe83b1c10aa8e107059663edb2b4290a9a9273cd959fc0886d5852fabacba466
[INFO] running `Command { std: "docker" "start" "-a" "fe83b1c10aa8e107059663edb2b4290a9a9273cd959fc0886d5852fabacba466", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe83b1c10aa8e107059663edb2b4290a9a9273cd959fc0886d5852fabacba466", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe83b1c10aa8e107059663edb2b4290a9a9273cd959fc0886d5852fabacba466", kill_on_drop: false }`
[INFO] [stdout] fe83b1c10aa8e107059663edb2b4290a9a9273cd959fc0886d5852fabacba466
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] bfac00c504411a9c4029df365eabc6299c02549e7cdc63253c39a04d62f3f133
[INFO] running `Command { std: "docker" "start" "-a" "bfac00c504411a9c4029df365eabc6299c02549e7cdc63253c39a04d62f3f133", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting generic-vec v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> src/lib.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         const_fn,
[INFO] [stdout]    |         ^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::alloc::AllocRef`
[INFO] [stdout]   --> src/raw/heap/nightly.rs:13:18
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::alloc::{AllocRef, Global};
[INFO] [stdout]    |                  ^^^^^^^^ no `AllocRef` in `alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `AllocRef` in module `std::alloc`
[INFO] [stdout]    --> src/impls.rs:113:24
[INFO] [stdout]     |
[INFO] [stdout] 113 | impl<T, A: std::alloc::AllocRef> From<Vec<T, A>> for crate::HeapVec<T, A> {
[INFO] [stdout]     |                        ^^^^^^^^ not found in `std::alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `AllocRef` in module `std::alloc`
[INFO] [stdout]    --> src/impls.rs:140:24
[INFO] [stdout]     |
[INFO] [stdout] 140 | impl<T, A: std::alloc::AllocRef> From<crate::HeapVec<T, A>> for Vec<T, A> {
[INFO] [stdout]     |                        ^^^^^^^^ not found in `std::alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `AllocRef` in module `std::alloc`
[INFO] [stdout]    --> src/lib.rs:547:24
[INFO] [stdout]     |
[INFO] [stdout] 547 | impl<T, A: std::alloc::AllocRef> HeapVec<T, A> {
[INFO] [stdout]     |                        ^^^^^^^^ not found in `std::alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     feature(min_const_generics, unsafe_block_in_unsafe_fn)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[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]   = help: the feature `unsafe_block_in_unsafe_fn` has been stable since 1.52.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `generic-vec`
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | /     feature(
[INFO] [stdout] 9  | |         trusted_len,
[INFO] [stdout] 10 | |         min_specialization,
[INFO] [stdout] 11 | |         exact_size_is_empty,
[INFO] [stdout] ...  |
[INFO] [stdout] 18 | |         doc_cfg,
[INFO] [stdout] 19 | |     )
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name generic_vec src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="alloc"' --cfg 'feature="default"' --cfg 'feature="std"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.2` (exit status: 1)
[INFO] [stdout] Some errors have detailed explanations: E0405, E0432, E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0405`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "bfac00c504411a9c4029df365eabc6299c02549e7cdc63253c39a04d62f3f133", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfac00c504411a9c4029df365eabc6299c02549e7cdc63253c39a04d62f3f133", kill_on_drop: false }`
[INFO] [stdout] bfac00c504411a9c4029df365eabc6299c02549e7cdc63253c39a04d62f3f133
