[INFO] fetching crate reverie-zk 0.2.1-rc.4...
[INFO] documenting reverie-zk-0.2.1-rc.4 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate reverie-zk 0.2.1-rc.4 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate reverie-zk 0.2.1-rc.4 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0/source/rust-toolchain
[INFO] started tweaking crates.io crate reverie-zk 0.2.1-rc.4
[INFO] finished tweaking crates.io crate reverie-zk 0.2.1-rc.4
[INFO] tweaked toml for crates.io crate reverie-zk 0.2.1-rc.4 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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" "+1.54.0" "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-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2fec7075524572090c6c0ef48a743785ea79a9151b9b61b8956ebc0366ff2831
[INFO] running `Command { std: "docker" "start" "-a" "2fec7075524572090c6c0ef48a743785ea79a9151b9b61b8956ebc0366ff2831", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fec7075524572090c6c0ef48a743785ea79a9151b9b61b8956ebc0366ff2831", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fec7075524572090c6c0ef48a743785ea79a9151b9b61b8956ebc0366ff2831", kill_on_drop: false }`
[INFO] [stdout] 2fec7075524572090c6c0ef48a743785ea79a9151b9b61b8956ebc0366ff2831
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a7d2cb247687eb440faffb06199b0bf1372d14d37915872a22c572ceb9b927d
[INFO] running `Command { std: "docker" "start" "-a" "6a7d2cb247687eb440faffb06199b0bf1372d14d37915872a22c572ceb9b927d", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling sysinfo v0.15.9
[INFO] [stderr]     Checking crossbeam-queue v0.3.2
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking serde-big-array v0.3.2
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking async-scoped v0.6.1
[INFO] [stderr]     Checking crossbeam v0.8.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking polling v2.1.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking async-io v1.6.0
[INFO] [stderr]     Checking async-global-executor v2.0.2
[INFO] [stderr]     Checking async-std v1.9.0
[INFO] [stderr]     Checking async-stream v0.3.2
[INFO] [stderr]  Documenting reverie-zk v0.2.1-rc.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `reverie-zk`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name reverie 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 async_channel=/opt/rustwide/target/debug/deps/libasync_channel-4bd9f3e9d0fef939.rmeta --extern async_scoped=/opt/rustwide/target/debug/deps/libasync_scoped-6520351cacc51044.rmeta --extern async_std=/opt/rustwide/target/debug/deps/libasync_std-152fa6374e122718.rmeta --extern async_stream=/opt/rustwide/target/debug/deps/libasync_stream-4290a47212532dbe.rmeta --extern bincode=/opt/rustwide/target/debug/deps/libbincode-d2b491aad6306fc0.rmeta --extern blake3=/opt/rustwide/target/debug/deps/libblake3-177752a74912a4e7.rmeta --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-cd269e746beec3eb.rmeta --extern fnv=/opt/rustwide/target/debug/deps/libfnv-335ca1a37265ba44.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-4e132399b961d086.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-74a9ecb2cbac341a.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-439732ba5f207e6a.rmeta --extern rand_chacha=/opt/rustwide/target/debug/deps/librand_chacha-cf1fec0a6ed37842.rmeta --extern rand_core=/opt/rustwide/target/debug/deps/librand_core-1f6fa088a2d5f4fe.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-b6b35a89be1d7184.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-df1c680f233dbcab.rmeta --extern serde_big_array=/opt/rustwide/target/debug/deps/libserde_big_array-ee8a4321bfc5dee3.rmeta --extern static_assertions=/opt/rustwide/target/debug/deps/libstatic_assertions-140fe15ab40ccc28.rmeta --extern sysinfo=/opt/rustwide/target/debug/deps/libsysinfo-214152c72207e5dc.rmeta --extern typenum=/opt/rustwide/target/debug/deps/libtypenum-8fa0e6bbb9428c5d.rmeta --cap-lints=warn --crate-version 0.2.1-rc.4` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "6a7d2cb247687eb440faffb06199b0bf1372d14d37915872a22c572ceb9b927d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a7d2cb247687eb440faffb06199b0bf1372d14d37915872a22c572ceb9b927d", kill_on_drop: false }`
[INFO] [stdout] 6a7d2cb247687eb440faffb06199b0bf1372d14d37915872a22c572ceb9b927d
