[INFO] cloning repository https://github.com/JayrellGaming/sylphverifier
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JayrellGaming/sylphverifier" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJayrellGaming%2Fsylphverifier", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJayrellGaming%2Fsylphverifier'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e0f717befce91863a6112999de4df2c7d0167edd
[INFO] documenting JayrellGaming/sylphverifier 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%2FJayrellGaming%2Fsylphverifier" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JayrellGaming/sylphverifier 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/JayrellGaming/sylphverifier
[INFO] finished tweaking git repo https://github.com/JayrellGaming/sylphverifier
[INFO] tweaked toml for git repo https://github.com/JayrellGaming/sylphverifier written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/JayrellGaming/sylphverifier 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/withoutboats/failure.git`
[INFO] [stderr]     Updating git repository `https://github.com/withoutboats/display_derive`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hmac v0.6.2
[INFO] [stderr]   Downloaded mime_guess v1.8.4
[INFO] [stderr]   Downloaded nix v0.7.0
[INFO] [stderr]   Downloaded rand v0.5.0
[INFO] [stderr]   Downloaded enumset v0.3.10
[INFO] [stderr]   Downloaded lz4-sys v1.8.0
[INFO] [stderr]   Downloaded petgraph v0.4.12
[INFO] [stderr]   Downloaded scheduled-thread-pool v0.2.0
[INFO] [stderr]   Downloaded rustc_version v0.2.2
[INFO] [stderr]   Downloaded r2d2 v0.8.2
[INFO] [stderr]   Downloaded rusqlite v0.13.0
[INFO] [stderr]   Downloaded digest v0.7.2
[INFO] [stderr]   Downloaded rand_core v0.2.0
[INFO] [stderr]   Downloaded git2 v0.7.1
[INFO] [stderr]   Downloaded arrayref v0.3.4
[INFO] [stderr]   Downloaded libz-sys v1.0.18
[INFO] [stderr]   Downloaded curl-sys v0.4.5
[INFO] [stderr]   Downloaded libgit2-sys v0.7.1
[INFO] [stderr]   Downloaded libssh2-sys v0.2.7
[INFO] [stderr]   Downloaded libsqlite3-sys v0.9.1
[INFO] [stderr]   Downloaded crypto-mac v0.6.0
[INFO] [stderr]   Downloaded cmake v0.1.31
[INFO] [stderr]   Downloaded smallstr v0.1.0
[INFO] [stderr]   Downloaded terminfo v0.5.0
[INFO] [stderr]   Downloaded mortal v0.1.2
[INFO] [stderr]   Downloaded linefeed v0.5.0
[INFO] [stderr]   Downloaded serde_derive v1.0.61
[INFO] [stderr]   Downloaded serde v1.0.61
[INFO] [stderr]   Downloaded backtrace-sys v0.1.21
[INFO] [stderr]   Downloaded serenity v0.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 21f36252a43958af1e609c19acfc0d25949bfded660a4d664fa8150eeda8dc24
[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" "21f36252a43958af1e609c19acfc0d25949bfded660a4d664fa8150eeda8dc24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21f36252a43958af1e609c19acfc0d25949bfded660a4d664fa8150eeda8dc24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21f36252a43958af1e609c19acfc0d25949bfded660a4d664fa8150eeda8dc24", kill_on_drop: false }`
[INFO] [stdout] 21f36252a43958af1e609c19acfc0d25949bfded660a4d664fa8150eeda8dc24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 77734d8d2a2d0d735745ebd5d431753e37081f399b4771cf4ffeaee1643f2464
[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" "77734d8d2a2d0d735745ebd5d431753e37081f399b4771cf4ffeaee1643f2464", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.41
[INFO] [stderr]    Compiling cc v1.0.15
[INFO] [stderr]    Compiling serde v1.0.61
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]     Checking smallvec v0.6.1
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling cfg-if v0.1.3
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]     Checking rand_core v0.2.0
[INFO] [stderr]     Checking enumset v0.3.10
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking base64 v0.9.1
[INFO] [stderr]     Checking base64 v0.8.0
[INFO] [stderr]     Checking encoding_rs v0.7.2
[INFO] [stdout] error: `allow_internal_unstable` expects a list of feature names
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/enumset-0.3.10/src/lib.rs:600:1
[INFO] [stdout]     |
[INFO] [stdout] 600 | #[allow_internal_unstable]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/enumset-0.3.10/src/lib.rs:2:39
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(all(feature = "nightly"), feature(allow_internal_unstable, macro_vis_matcher))]
[INFO] [stdout]   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `macro_vis_matcher` has been stable since 1.30.0 and no longer requires an attribute to enable
[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 compile `enumset` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "77734d8d2a2d0d735745ebd5d431753e37081f399b4771cf4ffeaee1643f2464", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77734d8d2a2d0d735745ebd5d431753e37081f399b4771cf4ffeaee1643f2464", kill_on_drop: false }`
[INFO] [stdout] 77734d8d2a2d0d735745ebd5d431753e37081f399b4771cf4ffeaee1643f2464
