[INFO] fetching crate c_str 1.0.8...
[INFO] documenting c_str-1.0.8 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate c_str 1.0.8 into /workspace/builds/worker-58/source
[INFO] validating manifest of crates.io crate c_str 1.0.8 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate c_str 1.0.8
[INFO] finished tweaking crates.io crate c_str 1.0.8
[INFO] tweaked toml for crates.io crate c_str 1.0.8 written to /workspace/builds/worker-58/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "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" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: path `/workspace/builds/worker-58/source/src/c_str.rs` was erroneously implicitly accepted for library `c_str`,
[INFO] [stderr] please rename the file to `src/lib.rs` or set lib.path in Cargo.toml
[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-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 755d08b6aae7798ae6d0f753c5b723010d4c7b484feda993ededd234cbea662b
[INFO] running `Command { std: "docker" "start" "-a" "755d08b6aae7798ae6d0f753c5b723010d4c7b484feda993ededd234cbea662b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "755d08b6aae7798ae6d0f753c5b723010d4c7b484feda993ededd234cbea662b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "755d08b6aae7798ae6d0f753c5b723010d4c7b484feda993ededd234cbea662b", kill_on_drop: false }`
[INFO] [stdout] 755d08b6aae7798ae6d0f753c5b723010d4c7b484feda993ededd234cbea662b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f7337f8b4a726a9466ae2f0e0c7f94985ed270cb89f45722c842330dc1618e4
[INFO] running `Command { std: "docker" "start" "-a" "7f7337f8b4a726a9466ae2f0e0c7f94985ed270cb89f45722c842330dc1618e4", kill_on_drop: false }`
[INFO] [stderr] warning: path `/opt/rustwide/workdir/src/c_str.rs` was erroneously implicitly accepted for library `c_str`,
[INFO] [stderr] please rename the file to `src/lib.rs` or set lib.path in Cargo.toml
[INFO] [stderr]  Documenting c_str v1.0.8 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/c_str.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | #![feature(core, collections, libc, convert)]
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/c_str.rs:43:18
[INFO] [stdout]    |
[INFO] [stdout] 43 | #![feature(core, collections, libc, convert)]
[INFO] [stdout]    |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/c_str.rs:43:31
[INFO] [stdout]    |
[INFO] [stdout] 43 | #![feature(core, collections, libc, convert)]
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/c_str.rs:43:37
[INFO] [stdout]    |
[INFO] [stdout] 43 | #![feature(core, collections, libc, convert)]
[INFO] [stdout]    |                                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `convert`
[INFO] [stdout]   --> src/c_str.rs:43:37
[INFO] [stdout]    |
[INFO] [stdout] 43 | #![feature(core, collections, libc, convert)]
[INFO] [stdout]    |                                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `collections`
[INFO] [stdout]   --> src/c_str.rs:43:18
[INFO] [stdout]    |
[INFO] [stdout] 43 | #![feature(core, collections, libc, convert)]
[INFO] [stdout]    |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `c_str`
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type dylib --crate-type rlib --crate-name c_str src/c_str.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=52528832e06b666b -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 1.0.8` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "7f7337f8b4a726a9466ae2f0e0c7f94985ed270cb89f45722c842330dc1618e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f7337f8b4a726a9466ae2f0e0c7f94985ed270cb89f45722c842330dc1618e4", kill_on_drop: false }`
[INFO] [stdout] 7f7337f8b4a726a9466ae2f0e0c7f94985ed270cb89f45722c842330dc1618e4