[INFO] fetching crate surge-samplerate 0.2.4-alpha.0...
[INFO] documenting surge-samplerate-0.2.4-alpha.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate surge-samplerate 0.2.4-alpha.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate surge-samplerate 0.2.4-alpha.0 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 surge-samplerate 0.2.4-alpha.0
[INFO] finished tweaking crates.io crate surge-samplerate 0.2.4-alpha.0
[INFO] tweaked toml for crates.io crate surge-samplerate 0.2.4-alpha.0 written to /workspace/builds/worker-1/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3eec6cc4276de4160c50a748e5119e10c02597495b3df1ad96173829be742310
[INFO] running `Command { std: "docker" "start" "-a" "3eec6cc4276de4160c50a748e5119e10c02597495b3df1ad96173829be742310", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3eec6cc4276de4160c50a748e5119e10c02597495b3df1ad96173829be742310", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3eec6cc4276de4160c50a748e5119e10c02597495b3df1ad96173829be742310", kill_on_drop: false }`
[INFO] [stdout] 3eec6cc4276de4160c50a748e5119e10c02597495b3df1ad96173829be742310
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 09d3299d1881616495d9989a9de53ab590e9531139308bb53c38727c40efad79
[INFO] running `Command { std: "docker" "start" "-a" "09d3299d1881616495d9989a9de53ab590e9531139308bb53c38727c40efad79", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling enum_dispatch v0.3.8
[INFO] [stderr]  Documenting surge-samplerate v0.2.4-alpha.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(in_band_lifetimes)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed due to unsolved ergonomic questions and added lifetime resolution complexity
[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 `surge-samplerate`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name surge_samplerate src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=71faac5bb2af39d2 -L dependency=/opt/rustwide/target/debug/deps --extern atomic_float=/opt/rustwide/target/debug/deps/libatomic_float-b0fefee00109c4c6.rmeta --extern enum_dispatch=/opt/rustwide/target/debug/deps/libenum_dispatch-abaab2b4dcff7497.so --extern surge_constants=/opt/rustwide/target/debug/deps/libsurge_constants-d6a288ac10a94c58.rmeta --cap-lints=warn --crate-version 0.2.4-alpha.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "09d3299d1881616495d9989a9de53ab590e9531139308bb53c38727c40efad79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09d3299d1881616495d9989a9de53ab590e9531139308bb53c38727c40efad79", kill_on_drop: false }`
[INFO] [stdout] 09d3299d1881616495d9989a9de53ab590e9531139308bb53c38727c40efad79