[INFO] fetching crate small-sorted-map 0.0.1-alpha.4...
[INFO] documenting small-sorted-map-0.0.1-alpha.4 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate small-sorted-map 0.0.1-alpha.4 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate small-sorted-map 0.0.1-alpha.4 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 small-sorted-map 0.0.1-alpha.4
[INFO] finished tweaking crates.io crate small-sorted-map 0.0.1-alpha.4
[INFO] tweaked toml for crates.io crate small-sorted-map 0.0.1-alpha.4 written to /workspace/builds/worker-7-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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 7aaa32436fa88b566fefe0269e1c08963a9560e588b9715e67df834574a4a24c
[INFO] running `Command { std: "docker" "start" "-a" "7aaa32436fa88b566fefe0269e1c08963a9560e588b9715e67df834574a4a24c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7aaa32436fa88b566fefe0269e1c08963a9560e588b9715e67df834574a4a24c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aaa32436fa88b566fefe0269e1c08963a9560e588b9715e67df834574a4a24c", kill_on_drop: false }`
[INFO] [stdout] 7aaa32436fa88b566fefe0269e1c08963a9560e588b9715e67df834574a4a24c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 01c9c4902deb315946f89ecc03f6b12c98a009ad2f841dd05be7c71556aba211
[INFO] running `Command { std: "docker" "start" "-a" "01c9c4902deb315946f89ecc03f6b12c98a009ad2f841dd05be7c71556aba211", kill_on_drop: false }`
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]  Documenting small-sorted-map v0.0.1-alpha.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(result_into_ok_or_err, default_free_fn)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:35
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(result_into_ok_or_err, default_free_fn)]
[INFO] [stdout]   |                                   ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `result_into_ok_or_err`
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(result_into_ok_or_err, default_free_fn)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `small-sorted-map`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name small_sorted_map src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="serde"' --cfg 'feature="serde_crate"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=9c16baf6b86e3ed5 -L dependency=/opt/rustwide/target/debug/deps --extern serde_crate=/opt/rustwide/target/debug/deps/libserde-b6956e1a4b2bd63a.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-2d73737dc2840d69.rmeta --cap-lints=warn --crate-version 0.0.1-alpha.4` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "01c9c4902deb315946f89ecc03f6b12c98a009ad2f841dd05be7c71556aba211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01c9c4902deb315946f89ecc03f6b12c98a009ad2f841dd05be7c71556aba211", kill_on_drop: false }`
[INFO] [stdout] 01c9c4902deb315946f89ecc03f6b12c98a009ad2f841dd05be7c71556aba211
