[INFO] cloning repository https://github.com/Worldotank1287/checked_wipe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Worldotank1287/checked_wipe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWorldotank1287%2Fchecked_wipe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWorldotank1287%2Fchecked_wipe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c3e43cec874237995403086efabb24678f3b8189
[INFO] documenting Worldotank1287/checked_wipe 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%2FWorldotank1287%2Fchecked_wipe" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Worldotank1287/checked_wipe 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/Worldotank1287/checked_wipe
[INFO] finished tweaking git repo https://github.com/Worldotank1287/checked_wipe
[INFO] tweaked toml for git repo https://github.com/Worldotank1287/checked_wipe written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Worldotank1287/checked_wipe 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 number_prefix v0.4.0
[INFO] [stderr]   Downloaded scan_fmt v0.2.6
[INFO] [stderr]   Downloaded indicatif v0.16.2
[INFO] [stderr]   Downloaded nix v0.21.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 7f0ac103cb74cb42c27ec8228331ab3ea0f4046a26fccc96dace1e57c23f7933
[INFO] running `Command { std: "docker" "start" "-a" "7f0ac103cb74cb42c27ec8228331ab3ea0f4046a26fccc96dace1e57c23f7933", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f0ac103cb74cb42c27ec8228331ab3ea0f4046a26fccc96dace1e57c23f7933", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f0ac103cb74cb42c27ec8228331ab3ea0f4046a26fccc96dace1e57c23f7933", kill_on_drop: false }`
[INFO] [stdout] 7f0ac103cb74cb42c27ec8228331ab3ea0f4046a26fccc96dace1e57c23f7933
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 755d48e06841a3708b954c85b6a532e25e784f416fef8824a4ea65b912d04cb0
[INFO] running `Command { std: "docker" "start" "-a" "755d48e06841a3708b954c85b6a532e25e784f416fef8824a4ea65b912d04cb0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]     Checking number_prefix v0.4.0
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking scan_fmt v0.2.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking nix v0.21.0
[INFO] [stderr]     Checking console v0.14.1
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking indicatif v0.16.2
[INFO] [stderr]  Documenting checked_wipe v0.2.0 (/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(pattern)]
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `checked_wipe`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name checked_wipe src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=3b67e04423862abc -L dependency=/opt/rustwide/target/debug/deps --extern chrono=/opt/rustwide/target/debug/deps/libchrono-d2088872e7240b42.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-9d36dbf0ad736eb4.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-27882f514158cddf.rmeta --extern indicatif=/opt/rustwide/target/debug/deps/libindicatif-b7137f513ded1586.rmeta --extern nix=/opt/rustwide/target/debug/deps/libnix-2a673666379a7b10.rmeta --extern scan_fmt=/opt/rustwide/target/debug/deps/libscan_fmt-7c762bfcf57ca443.rmeta --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "755d48e06841a3708b954c85b6a532e25e784f416fef8824a4ea65b912d04cb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "755d48e06841a3708b954c85b6a532e25e784f416fef8824a4ea65b912d04cb0", kill_on_drop: false }`
[INFO] [stdout] 755d48e06841a3708b954c85b6a532e25e784f416fef8824a4ea65b912d04cb0