[INFO] fetching crate alloc-singleton 0.1.0...
[INFO] documenting alloc-singleton-0.1.0 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate alloc-singleton 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate alloc-singleton 0.1.0 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 alloc-singleton 0.1.0
[INFO] finished tweaking crates.io crate alloc-singleton 0.1.0
[INFO] tweaked toml for crates.io crate alloc-singleton 0.1.0 written to /workspace/builds/worker-4-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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded generic-array v0.12.4
[INFO] [stderr]   Downloaded as-slice v0.1.5
[INFO] [stderr]   Downloaded generic-array v0.13.3
[INFO] [stderr]   Downloaded owned-singleton-macros v0.1.0
[INFO] [stderr]   Downloaded owned-singleton v0.1.0
[INFO] [stderr]   Downloaded rand v0.5.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] cb2ba188ba5c0e751731f106a28e32b52b831d4b08a2088020dffb0e1f9a5bc7
[INFO] running `Command { std: "docker" "start" "-a" "cb2ba188ba5c0e751731f106a28e32b52b831d4b08a2088020dffb0e1f9a5bc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb2ba188ba5c0e751731f106a28e32b52b831d4b08a2088020dffb0e1f9a5bc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb2ba188ba5c0e751731f106a28e32b52b831d4b08a2088020dffb0e1f9a5bc7", kill_on_drop: false }`
[INFO] [stdout] cb2ba188ba5c0e751731f106a28e32b52b831d4b08a2088020dffb0e1f9a5bc7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 971927bd1210c3d02199eca5cb7dfc8aa5d6aa4a02c08f443d0492f11ef27268
[INFO] running `Command { std: "docker" "start" "-a" "971927bd1210c3d02199eca5cb7dfc8aa5d6aa4a02c08f443d0492f11ef27268", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stderr]    Compiling owned-singleton-macros v0.1.0
[INFO] [stderr]     Checking owned-singleton v0.1.0
[INFO] [stderr]  Documenting alloc-singleton v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.98s
[INFO] running `Command { std: "docker" "inspect" "971927bd1210c3d02199eca5cb7dfc8aa5d6aa4a02c08f443d0492f11ef27268", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "971927bd1210c3d02199eca5cb7dfc8aa5d6aa4a02c08f443d0492f11ef27268", kill_on_drop: false }`
[INFO] [stdout] 971927bd1210c3d02199eca5cb7dfc8aa5d6aa4a02c08f443d0492f11ef27268
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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" "rustdoc" "--lib" "-Zrustdoc-map" "--features" "nightly" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ce0412b905f92af2592a0b9d6ad7a21812e1f8f8a0c6916826c89f2b6c1728d
[INFO] running `Command { std: "docker" "start" "-a" "5ce0412b905f92af2592a0b9d6ad7a21812e1f8f8a0c6916826c89f2b6c1728d", kill_on_drop: false }`
[INFO] [stderr]  Documenting alloc-singleton v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:7:42
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![cfg_attr(feature = "nightly", feature(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: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `alloc-singleton`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name alloc_singleton src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="generic-array"' --cfg 'feature="nightly"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat -C metadata=52ff6dc51bce0445 -L dependency=/opt/rustwide/target/debug/deps --extern as_slice=/opt/rustwide/target/debug/deps/libas_slice-989a6e29534ec4f3.rmeta --extern generic_array=/opt/rustwide/target/debug/deps/libgeneric_array-9d01b0e44c0d50fe.rmeta --extern owned_singleton=/opt/rustwide/target/debug/deps/libowned_singleton-8f56ddf6705abdee.rmeta --extern stable_deref_trait=/opt/rustwide/target/debug/deps/libstable_deref_trait-67d6416f1e2e4147.rmeta --extern-html-root-url 'as_slice=https://docs.rs/as-slice/0.1.5/' --extern-html-root-url 'generic_array=https://docs.rs/generic-array/0.12.4/' --extern-html-root-url 'owned_singleton=https://docs.rs/owned-singleton/0.1.0/' --extern-html-root-url 'stable_deref_trait=https://docs.rs/stable_deref_trait/1.2.0/' -Zunstable-options --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "5ce0412b905f92af2592a0b9d6ad7a21812e1f8f8a0c6916826c89f2b6c1728d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ce0412b905f92af2592a0b9d6ad7a21812e1f8f8a0c6916826c89f2b6c1728d", kill_on_drop: false }`
[INFO] [stdout] 5ce0412b905f92af2592a0b9d6ad7a21812e1f8f8a0c6916826c89f2b6c1728d
