[INFO] cloning repository https://github.com/ray33ee/Project-Midas
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ray33ee/Project-Midas" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fray33ee%2FProject-Midas", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fray33ee%2FProject-Midas'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2603a70fc602d6707045bf0e36d2dce371739906
[INFO] documenting ray33ee/Project-Midas 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%2Fray33ee%2FProject-Midas" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ray33ee/Project-Midas 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] started tweaking git repo https://github.com/ray33ee/Project-Midas
[INFO] finished tweaking git repo https://github.com/ray33ee/Project-Midas
[INFO] tweaked toml for git repo https://github.com/ray33ee/Project-Midas written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/ray33ee/Project-Midas 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]     Updating git repository `https://github.com/ray33ee/hlua`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bimap v0.6.0
[INFO] [stderr]   Downloaded message-io v0.6.0
[INFO] [stderr]   Downloaded ipaddress v0.1.2
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4fa9314c478d4c5232a769836fe96c7628aa06641c1087de2c4071cb7aa1efc3
[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" "4fa9314c478d4c5232a769836fe96c7628aa06641c1087de2c4071cb7aa1efc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4fa9314c478d4c5232a769836fe96c7628aa06641c1087de2c4071cb7aa1efc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fa9314c478d4c5232a769836fe96c7628aa06641c1087de2c4071cb7aa1efc3", kill_on_drop: false }`
[INFO] [stdout] 4fa9314c478d4c5232a769836fe96c7628aa06641c1087de2c4071cb7aa1efc3
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/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] [stdout] 254416b45b735ba121a92654efe240975d88872f13fd7549a81b042242ae2f46
[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" "254416b45b735ba121a92654efe240975d88872f13fd7549a81b042242ae2f46", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking ucd-util v0.1.8
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]     Checking bimap v0.6.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling lua52-sys v0.1.2 (https://github.com/ray33ee/hlua#13989ad4)
[INFO] [stderr]     Checking mio v0.7.7
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking crossterm v0.18.2
[INFO] [stderr]     Checking crossterm v0.19.0
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking crossbeam-queue v0.3.1
[INFO] [stderr]     Checking tui v0.14.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking crossbeam v0.8.0
[INFO] [stderr]     Checking ipaddress v0.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking hlua v0.4.1 (https://github.com/ray33ee/hlua#13989ad4)
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling num_enum_derive v0.5.1
[INFO] [stderr]     Checking num_enum v0.5.1
[INFO] [stderr]     Checking message-io v0.6.0
[INFO] [stderr]  Documenting midas v0.2.18 (/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(available_concurrency)]
[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 `midas`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name midas 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 bimap=/opt/rustwide/target/debug/deps/libbimap-52cbfca0dbba5b90.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-7cbf1359cf929fc4.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-8c409a34eb1fe024.rmeta --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-faf808783cbdafd4.rmeta --extern crossbeam_channel=/opt/rustwide/target/debug/deps/libcrossbeam_channel-e65bca5cc19255a8.rmeta --extern crossterm=/opt/rustwide/target/debug/deps/libcrossterm-f80b354f9b860dad.rmeta --extern hlua=/opt/rustwide/target/debug/deps/libhlua-66d4472afa35bde8.rmeta --extern ipaddress=/opt/rustwide/target/debug/deps/libipaddress-310a9b149250d263.rmeta --extern message_io=/opt/rustwide/target/debug/deps/libmessage_io-023023be92796a72.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-ca8cfba374a7c843.rmeta --extern tui=/opt/rustwide/target/debug/deps/libtui-c57045363f3b30d7.rmeta --cap-lints=warn --crate-version 0.2.18` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "254416b45b735ba121a92654efe240975d88872f13fd7549a81b042242ae2f46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "254416b45b735ba121a92654efe240975d88872f13fd7549a81b042242ae2f46", kill_on_drop: false }`
[INFO] [stdout] 254416b45b735ba121a92654efe240975d88872f13fd7549a81b042242ae2f46
