[INFO] fetching crate windmark 0.1.14...
[INFO] documenting windmark-0.1.14 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate windmark 0.1.14 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate windmark 0.1.14 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] removed /workspace/builds/worker-10/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate windmark 0.1.14
[INFO] finished tweaking crates.io crate windmark 0.1.14
[INFO] tweaked toml for crates.io crate windmark 0.1.14 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate windmark 0.1.14 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lock_api v0.3.4
[INFO] [stderr]   Downloaded fixedbitset v0.2.0
[INFO] [stderr]   Downloaded tree_magic v0.2.3
[INFO] [stderr]   Downloaded parking_lot v0.10.2
[INFO] [stderr]   Downloaded memchr v1.0.2
[INFO] [stderr]   Downloaded petgraph v0.5.1
[INFO] [stderr]   Downloaded nom v3.2.1
[INFO] [stderr]   Downloaded parking_lot_core v0.7.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] cee4e2909f23032b78c5c3e1ad99def6ecee4706e327044a0c42fec127f96998
[INFO] running `Command { std: "docker" "start" "-a" "cee4e2909f23032b78c5c3e1ad99def6ecee4706e327044a0c42fec127f96998", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cee4e2909f23032b78c5c3e1ad99def6ecee4706e327044a0c42fec127f96998", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cee4e2909f23032b78c5c3e1ad99def6ecee4706e327044a0c42fec127f96998", kill_on_drop: false }`
[INFO] [stdout] cee4e2909f23032b78c5c3e1ad99def6ecee4706e327044a0c42fec127f96998
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] [stdout] 2181fb05379565b5889682e4e8f617f9042e2db8f5bf6e5eb5d22cdca09767c8
[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" "2181fb05379565b5889682e4e8f617f9042e2db8f5bf6e5eb5d22cdca09767c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking log v0.4.16
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking tokio-openssl v0.4.0
[INFO] [stderr]  Documenting windmark v0.1.14 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:98:12
[INFO] [stdout]    |
[INFO] [stdout] 98 | #![feature(once_cell, fn_traits)]
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:98:23
[INFO] [stdout]    |
[INFO] [stdout] 98 | #![feature(once_cell, fn_traits)]
[INFO] [stdout]    |                       ^^^^^^^^^
[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 `windmark`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name windmark src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=e2c9620100b3842d -L dependency=/opt/rustwide/target/debug/deps --extern log=/opt/rustwide/target/debug/deps/liblog-2e691dd3c3a23271.rmeta --extern matchit=/opt/rustwide/target/debug/deps/libmatchit-3cbaf78f21f6b788.rmeta --extern openssl=/opt/rustwide/target/debug/deps/libopenssl-73715f61bc645a0a.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-cb768725e26a3b91.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-4d6fb2a0fdea0f0a.rmeta --extern tokio_openssl=/opt/rustwide/target/debug/deps/libtokio_openssl-ab1a4e4c24e32edf.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-a35cfd85ea65b537.rmeta --cap-lints=warn --crate-version 0.1.14` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "2181fb05379565b5889682e4e8f617f9042e2db8f5bf6e5eb5d22cdca09767c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2181fb05379565b5889682e4e8f617f9042e2db8f5bf6e5eb5d22cdca09767c8", kill_on_drop: false }`
[INFO] [stdout] 2181fb05379565b5889682e4e8f617f9042e2db8f5bf6e5eb5d22cdca09767c8