[INFO] fetching crate leak-detect-allocator 0.1.3...
[INFO] documenting leak-detect-allocator-0.1.3 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate leak-detect-allocator 0.1.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate leak-detect-allocator 0.1.3 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate leak-detect-allocator 0.1.3
[INFO] finished tweaking crates.io crate leak-detect-allocator 0.1.3
[INFO] tweaked toml for crates.io crate leak-detect-allocator 0.1.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1f9e5088142ed9412844db7dd77ac6d181fa942687377b09f8e7beab9d70b20
[INFO] running `Command { std: "docker" "start" "-a" "f1f9e5088142ed9412844db7dd77ac6d181fa942687377b09f8e7beab9d70b20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1f9e5088142ed9412844db7dd77ac6d181fa942687377b09f8e7beab9d70b20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1f9e5088142ed9412844db7dd77ac6d181fa942687377b09f8e7beab9d70b20", kill_on_drop: false }`
[INFO] [stdout] f1f9e5088142ed9412844db7dd77ac6d181fa942687377b09f8e7beab9d70b20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a8588ab62b9eac5dd742ba3ec0cd45af9fcec920391715907f2a693a145bfeb3
[INFO] running `Command { std: "docker" "start" "-a" "a8588ab62b9eac5dd742ba3ec0cd45af9fcec920391715907f2a693a145bfeb3", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]     Checking object v0.28.4
[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]  Documenting leak-detect-allocator v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![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 `leak-detect-allocator`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name leak_detect_allocator src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0302ea4c8c57c551 -L dependency=/opt/rustwide/target/debug/deps --extern backtrace=/opt/rustwide/target/debug/deps/libbacktrace-90c850a78796e652.rmeta --extern heapless=/opt/rustwide/target/debug/deps/libheapless-d424640f4b0031ee.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-6a77d5dadf64d1bc.rmeta --extern spin=/opt/rustwide/target/debug/deps/libspin-ae26ba524b5b1fed.rmeta --cap-lints=warn --crate-version 0.1.3` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "a8588ab62b9eac5dd742ba3ec0cd45af9fcec920391715907f2a693a145bfeb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8588ab62b9eac5dd742ba3ec0cd45af9fcec920391715907f2a693a145bfeb3", kill_on_drop: false }`
[INFO] [stdout] a8588ab62b9eac5dd742ba3ec0cd45af9fcec920391715907f2a693a145bfeb3