[INFO] cloning repository https://github.com/twilco/hdlman
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/twilco/hdlman" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwilco%2Fhdlman", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwilco%2Fhdlman'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 06dc80bb782652ae35a6fef65a89288425f0d709
[INFO] documenting twilco/hdlman against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwilco%2Fhdlman" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/twilco/hdlman on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/twilco/hdlman
[INFO] finished tweaking git repo https://github.com/twilco/hdlman
[INFO] tweaked toml for git repo https://github.com/twilco/hdlman written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/twilco/hdlman already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossterm_winapi v0.6.2
[INFO] [stderr]   Downloaded colour v0.5.0
[INFO] [stderr]   Downloaded crossterm v0.16.0
[INFO] [stderr]   Downloaded directories v3.0.1
[INFO] [stderr]   Downloaded indoc v1.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "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] 663f3f385ce7184845742eef81d3a97baf3bd39f76ea37162f26989a9e892888
[INFO] running `Command { std: "docker" "start" "-a" "663f3f385ce7184845742eef81d3a97baf3bd39f76ea37162f26989a9e892888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "663f3f385ce7184845742eef81d3a97baf3bd39f76ea37162f26989a9e892888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "663f3f385ce7184845742eef81d3a97baf3bd39f76ea37162f26989a9e892888", kill_on_drop: false }`
[INFO] [stdout] 663f3f385ce7184845742eef81d3a97baf3bd39f76ea37162f26989a9e892888
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "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] 12dcf0c110cf0dc809fefef183e9a6f00df64f8f72ae7caa7437bcbd74e9be2c
[INFO] running `Command { std: "docker" "start" "-a" "12dcf0c110cf0dc809fefef183e9a6f00df64f8f72ae7caa7437bcbd74e9be2c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.52
[INFO] [stderr]     Checking serde v1.0.117
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking directories v3.0.1
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking signal-hook v0.1.16
[INFO] [stderr]     Checking crossterm v0.16.0
[INFO] [stderr]     Checking colour v0.5.0
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]    Compiling strum_macros v0.20.1
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]     Checking strum v0.20.0
[INFO] [stderr]  Documenting hdlman v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(array_methods)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `hdlman`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name hdlman src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-ede12600285e788b.rmeta --extern colour=/opt/rustwide/target/debug/deps/libcolour-6b30f2d7df8f1820.rmeta --extern directories=/opt/rustwide/target/debug/deps/libdirectories-76757d02d738d72f.rmeta --extern indoc=/opt/rustwide/target/debug/deps/libindoc-b1c661e60ea1c3eb.so --extern serde=/opt/rustwide/target/debug/deps/libserde-f1f419068ff1e684.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-3c762fa09de5dd7d.so --extern strum=/opt/rustwide/target/debug/deps/libstrum-3799f15046e0e43e.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-883557501660fb1c.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "12dcf0c110cf0dc809fefef183e9a6f00df64f8f72ae7caa7437bcbd74e9be2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12dcf0c110cf0dc809fefef183e9a6f00df64f8f72ae7caa7437bcbd74e9be2c", kill_on_drop: false }`
[INFO] [stdout] 12dcf0c110cf0dc809fefef183e9a6f00df64f8f72ae7caa7437bcbd74e9be2c
