[INFO] fetching crate github-api 0.4.3...
[INFO] documenting github-api-0.4.3 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate github-api 0.4.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate github-api 0.4.3 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate github-api 0.4.3
[INFO] finished tweaking crates.io crate github-api 0.4.3
[INFO] tweaked toml for crates.io crate github-api 0.4.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded burgundy v0.3.3
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cea566717b463d7a1b51417aafbb8703a7b207d94fd8f52502dbf111d307e8d6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cea566717b463d7a1b51417aafbb8703a7b207d94fd8f52502dbf111d307e8d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cea566717b463d7a1b51417aafbb8703a7b207d94fd8f52502dbf111d307e8d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cea566717b463d7a1b51417aafbb8703a7b207d94fd8f52502dbf111d307e8d6", kill_on_drop: false }`
[INFO] [stdout] cea566717b463d7a1b51417aafbb8703a7b207d94fd8f52502dbf111d307e8d6
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] baa9c527b865772285af9d1854d548f8e1f430e9e26cc7be253732af2e887b07
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "baa9c527b865772285af9d1854d548f8e1f430e9e26cc7be253732af2e887b07", kill_on_drop: false }`
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking burgundy v0.3.3
[INFO] [stderr]  Documenting github-api v0.4.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use extern::burgundy;
[INFO] [stdout]    |     ^^^^^^ expected identifier, found keyword
[INFO] [stdout]    |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]    |
[INFO] [stdout] 10 | use r#extern::burgundy;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]   --> src/lib.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use extern::burgundy::Error;
[INFO] [stdout]    |         ^^^^^^ expected identifier, found keyword
[INFO] [stdout]    |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use r#extern::burgundy::Error;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]   --> src/lib.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub use extern::burgundy::Result;
[INFO] [stdout]    |         ^^^^^^ expected identifier, found keyword
[INFO] [stdout]    |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub use r#extern::burgundy::Result;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(extern_in_paths)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: subsumed by `::foo::bar` paths
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]  --> src/get.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ expected identifier, found keyword
[INFO] [stdout]   |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]   |
[INFO] [stdout] 1 | use r#extern::burgundy;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]  --> src/get/orgs.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ expected identifier, found keyword
[INFO] [stdout]   |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]   |
[INFO] [stdout] 1 | use r#extern::burgundy;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]  --> src/get/orgs/owner.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ expected identifier, found keyword
[INFO] [stdout]   |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]   |
[INFO] [stdout] 1 | use r#extern::burgundy;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]  --> src/get/orgs/owner/repos.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ expected identifier, found keyword
[INFO] [stdout]   |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]   |
[INFO] [stdout] 1 | use r#extern::burgundy;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]  --> src/get/repos.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ expected identifier, found keyword
[INFO] [stdout]   |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]   |
[INFO] [stdout] 1 | use r#extern::burgundy;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]  --> src/get/repos/owner.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ expected identifier, found keyword
[INFO] [stdout]   |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]   |
[INFO] [stdout] 1 | use r#extern::burgundy;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]  --> src/get/repos/owner/repo.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ expected identifier, found keyword
[INFO] [stdout]   |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]   |
[INFO] [stdout] 1 | use r#extern::burgundy;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]  --> src/get/repos/owner/repo/compare.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ expected identifier, found keyword
[INFO] [stdout]   |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]   |
[INFO] [stdout] 1 | use r#extern::burgundy;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]  --> src/get/repos/owner/repo/compare/revision.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ expected identifier, found keyword
[INFO] [stdout]   |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]   |
[INFO] [stdout] 1 | use r#extern::burgundy;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]  --> src/get/repos/owner/repo/contents.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ expected identifier, found keyword
[INFO] [stdout]   |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]   |
[INFO] [stdout] 1 | use r#extern::burgundy;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]  --> src/get/repos/owner/repo/contents/path.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::base64;
[INFO] [stdout]   |     ^^^^^^ expected identifier, found keyword
[INFO] [stdout]   |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]   |
[INFO] [stdout] 1 | use r#extern::base64;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]  --> src/get/repos/owner/repo/contents/path.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ expected identifier, found keyword
[INFO] [stdout]   |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]   |
[INFO] [stdout] 2 | use r#extern::burgundy;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]  --> src/get/repos/owner/repo/commits.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ expected identifier, found keyword
[INFO] [stdout]   |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]   |
[INFO] [stdout] 1 | use r#extern::burgundy;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]  --> src/get/repos/owner/repo/commits/path.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ expected identifier, found keyword
[INFO] [stdout]   |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]   |
[INFO] [stdout] 1 | use r#extern::burgundy;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found keyword `extern`
[INFO] [stdout]  --> src/get/repos/owner/repo/commits/sha.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ expected identifier, found keyword
[INFO] [stdout]   |
[INFO] [stdout] help: you can escape reserved keywords to use them as identifiers
[INFO] [stdout]   |
[INFO] [stdout] 1 | use r#extern::burgundy;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: maybe a missing crate `r#extern`?
[INFO] [stdout]   --> src/lib.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use extern::burgundy::Error;
[INFO] [stdout]    |         ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: maybe a missing crate `r#extern`?
[INFO] [stdout]   --> src/lib.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub use extern::burgundy::Result;
[INFO] [stdout]    |         ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `r#extern`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use extern::burgundy;
[INFO] [stdout]    |     ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `r#extern`
[INFO] [stdout]  --> src/get.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `r#extern`
[INFO] [stdout]  --> src/get/orgs.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `r#extern`
[INFO] [stdout]  --> src/get/orgs/owner.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `r#extern`
[INFO] [stdout]  --> src/get/orgs/owner/repos.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `r#extern`
[INFO] [stdout]  --> src/get/repos.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `r#extern`
[INFO] [stdout]  --> src/get/repos/owner.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `r#extern`
[INFO] [stdout]  --> src/get/repos/owner/repo.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `r#extern`
[INFO] [stdout]  --> src/get/repos/owner/repo/compare.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `r#extern`
[INFO] [stdout]  --> src/get/repos/owner/repo/compare/revision.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `r#extern`
[INFO] [stdout]  --> src/get/repos/owner/repo/contents.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `r#extern`
[INFO] [stdout]  --> src/get/repos/owner/repo/contents/path.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::base64;
[INFO] [stdout]   |     ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `r#extern`
[INFO] [stdout]  --> src/get/repos/owner/repo/contents/path.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `r#extern`
[INFO] [stdout]  --> src/get/repos/owner/repo/commits.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `r#extern`
[INFO] [stdout]  --> src/get/repos/owner/repo/commits/path.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `r#extern`
[INFO] [stdout]  --> src/get/repos/owner/repo/commits/sha.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use extern::burgundy;
[INFO] [stdout]   |     ^^^^^^ maybe a missing crate `r#extern`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(crate_visibility_modifier)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(extern_in_paths)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 40 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433, E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `github-api`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name github_api src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern base64=/opt/rustwide/target/debug/deps/libbase64-3e3f2557dd2e5666.rmeta --extern burgundy=/opt/rustwide/target/debug/deps/libburgundy-899500277c2ed2cf.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-db88f49d9e5662e7.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-ec5e695d7e4b5284.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-3a89c57880b62507.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-7b195ede6b83e119.rmeta --cap-lints=warn --crate-version 0.4.3` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "baa9c527b865772285af9d1854d548f8e1f430e9e26cc7be253732af2e887b07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baa9c527b865772285af9d1854d548f8e1f430e9e26cc7be253732af2e887b07", kill_on_drop: false }`
[INFO] [stdout] baa9c527b865772285af9d1854d548f8e1f430e9e26cc7be253732af2e887b07