[INFO] cloning repository https://github.com/Wazzaps/SimplExp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Wazzaps/SimplExp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWazzaps%2FSimplExp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWazzaps%2FSimplExp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e7113fddb9688652195b50236cfd49aea0aa5d1c
[INFO] documenting Wazzaps/SimplExp against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWazzaps%2FSimplExp" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Wazzaps/SimplExp 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 git repo https://github.com/Wazzaps/SimplExp
[INFO] finished tweaking git repo https://github.com/Wazzaps/SimplExp
[INFO] tweaked toml for git repo https://github.com/Wazzaps/SimplExp written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/Wazzaps/SimplExp 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 konst_proc_macros v0.2.11
[INFO] [stderr]   Downloaded konst v0.2.13
[INFO] [stderr]   Downloaded konst_macro_rules v0.2.13
[INFO] [stderr]   Downloaded eq-float v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 827a8a9047ee43bb3584689aee4bd9267b2bba1daf2a175deca08e688e0f62a1
[INFO] running `Command { std: "docker" "start" "-a" "827a8a9047ee43bb3584689aee4bd9267b2bba1daf2a175deca08e688e0f62a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "827a8a9047ee43bb3584689aee4bd9267b2bba1daf2a175deca08e688e0f62a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "827a8a9047ee43bb3584689aee4bd9267b2bba1daf2a175deca08e688e0f62a1", kill_on_drop: false }`
[INFO] [stdout] 827a8a9047ee43bb3584689aee4bd9267b2bba1daf2a175deca08e688e0f62a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] c5dddf7eb658333136e943b3071507eae756ce738744416a44dbed187b9984f1
[INFO] running `Command { std: "docker" "start" "-a" "c5dddf7eb658333136e943b3071507eae756ce738744416a44dbed187b9984f1", kill_on_drop: false }`
[INFO] [stderr]     Checking konst_macro_rules v0.2.13
[INFO] [stderr]    Compiling konst_proc_macros v0.2.11
[INFO] [stderr]     Checking eq-float v0.1.0
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]     Checking konst v0.2.13
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]     Checking serde v1.0.136
[INFO] [stderr]     Checking serde_json v1.0.78
[INFO] [stderr]  Documenting simplexp v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(vec_into_raw_parts)]
[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:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(concat_idents)]
[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 `simplexp`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type cdylib --crate-name simplexp src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f7379758cefedbf6 -L dependency=/opt/rustwide/target/debug/deps --extern eq_float=/opt/rustwide/target/debug/deps/libeq_float-ed3797ffc25970e5.rmeta --extern konst=/opt/rustwide/target/debug/deps/libkonst-eaf52ff1a863ac7d.rmeta --extern num_derive=/opt/rustwide/target/debug/deps/libnum_derive-be54927750eb1009.so --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-2cd290f5395ab79d.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-bab1c7eb038c23fa.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-a723854833706a76.rmeta --cap-lints=warn --crate-version 0.3.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "c5dddf7eb658333136e943b3071507eae756ce738744416a44dbed187b9984f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5dddf7eb658333136e943b3071507eae756ce738744416a44dbed187b9984f1", kill_on_drop: false }`
[INFO] [stdout] c5dddf7eb658333136e943b3071507eae756ce738744416a44dbed187b9984f1