[INFO] fetching crate psbattletools 0.2.4...
[INFO] documenting psbattletools-0.2.4 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate psbattletools 0.2.4 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate psbattletools 0.2.4 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 psbattletools 0.2.4
[INFO] finished tweaking crates.io crate psbattletools 0.2.4
[INFO] tweaked toml for crates.io crate psbattletools 0.2.4 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate psbattletools 0.2.4 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 cargo-husky v1.5.0
[INFO] [stderr]   Downloaded structopt-derive v0.4.16
[INFO] [stderr]   Downloaded libc v0.2.104
[INFO] [stderr]   Downloaded gjson v0.8.0
[INFO] [stderr]   Downloaded structopt v0.3.23
[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] [stdout] 9ff6fd20cc638b67a8c4c55ecbacca56c41852112cf7e7492e13f5969f0500b4
[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" "9ff6fd20cc638b67a8c4c55ecbacca56c41852112cf7e7492e13f5969f0500b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ff6fd20cc638b67a8c4c55ecbacca56c41852112cf7e7492e13f5969f0500b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ff6fd20cc638b67a8c4c55ecbacca56c41852112cf7e7492e13f5969f0500b4", kill_on_drop: false }`
[INFO] [stdout] 9ff6fd20cc638b67a8c4c55ecbacca56c41852112cf7e7492e13f5969f0500b4
[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] 4180e0fcb8daf85e998b778397a5680fff3a4f7b62fb7ad12fcd8d55ee5a6ce0
[INFO] running `Command { std: "docker" "start" "-a" "4180e0fcb8daf85e998b778397a5680fff3a4f7b62fb7ad12fcd8d55ee5a6ce0", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking gjson v0.8.0
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]     Checking structopt v0.3.23
[INFO] [stderr]  Documenting psbattletools v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iter_intersperse, test)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:30
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iter_intersperse, test)]
[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 `psbattletools`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name psbattletools src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=6d70b3383d872f07 -L dependency=/opt/rustwide/target/debug/deps --extern crossbeam_utils=/opt/rustwide/target/debug/deps/libcrossbeam_utils-dd628995cd773cc5.rmeta --extern gjson=/opt/rustwide/target/debug/deps/libgjson-e1b6a20ad1f024e3.rmeta --extern indexmap=/opt/rustwide/target/debug/deps/libindexmap-69857b6523404e55.rmeta --extern json=/opt/rustwide/target/debug/deps/libjson-d3b01422cf953791.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern prettytable=/opt/rustwide/target/debug/deps/libprettytable-fd0f965764621dd1.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-f3a964a683ff37a8.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-01d9c5dc0d72cf1f.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-001d106abb8a3447.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-d8f01cc889bf8ea3.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-8c3e7514974afba7.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-ad18258194618cb6.rmeta --cap-lints=warn --crate-version 0.2.4` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "4180e0fcb8daf85e998b778397a5680fff3a4f7b62fb7ad12fcd8d55ee5a6ce0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4180e0fcb8daf85e998b778397a5680fff3a4f7b62fb7ad12fcd8d55ee5a6ce0", kill_on_drop: false }`
[INFO] [stdout] 4180e0fcb8daf85e998b778397a5680fff3a4f7b62fb7ad12fcd8d55ee5a6ce0