[INFO] fetching crate bar 0.1.1...
[INFO] documenting bar-0.1.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate bar 0.1.1 into /workspace/builds/worker-84/source
[INFO] validating manifest of crates.io crate bar 0.1.1 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bar 0.1.1
[INFO] finished tweaking crates.io crate bar 0.1.1
[INFO] tweaked toml for crates.io crate bar 0.1.1 written to /workspace/builds/worker-84/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "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-2022-05-20" "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-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a17ab99aa5988f0fdacf9961a2a694dfc440a1a012ee1b10750f9a6139889ad0
[INFO] running `Command { std: "docker" "start" "-a" "a17ab99aa5988f0fdacf9961a2a694dfc440a1a012ee1b10750f9a6139889ad0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a17ab99aa5988f0fdacf9961a2a694dfc440a1a012ee1b10750f9a6139889ad0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a17ab99aa5988f0fdacf9961a2a694dfc440a1a012ee1b10750f9a6139889ad0", kill_on_drop: false }`
[INFO] [stdout] a17ab99aa5988f0fdacf9961a2a694dfc440a1a012ee1b10750f9a6139889ad0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ebb1de0ff5f765b009c56501245f7fc2f85a2be9b7262596e882c56d7f33c40
[INFO] running `Command { std: "docker" "start" "-a" "6ebb1de0ff5f765b009c56501245f7fc2f85a2be9b7262596e882c56d7f33c40", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking strsim v0.5.2
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking term v0.2.14
[INFO] [stderr]     Checking toml v0.1.30
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking docopt v0.6.86
[INFO] [stderr]  Documenting bar v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `collections`
[INFO] [stdout]   --> src/bar/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | extern crate collections;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/bar/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_syntax, box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/bar/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(associated_consts)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `associated_consts` has been stable since 1.20.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/bar/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(collections, collections_bound, btree_range)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/bar/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(unicode)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0463, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `bar`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name bar src/bar/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=1bef968683cdc28c -L dependency=/opt/rustwide/target/debug/deps --extern docopt=/opt/rustwide/target/debug/deps/libdocopt-2ff3972822ecdb9f.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-4d71df194c95b93b.rmeta --extern rustc_serialize=/opt/rustwide/target/debug/deps/librustc_serialize-133015b43c1c35be.rmeta --extern term=/opt/rustwide/target/debug/deps/libterm-e7a8e5b581d061ac.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-fc49901ec23d8aa6.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "6ebb1de0ff5f765b009c56501245f7fc2f85a2be9b7262596e882c56d7f33c40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ebb1de0ff5f765b009c56501245f7fc2f85a2be9b7262596e882c56d7f33c40", kill_on_drop: false }`
[INFO] [stdout] 6ebb1de0ff5f765b009c56501245f7fc2f85a2be9b7262596e882c56d7f33c40