[INFO] cloning repository https://github.com/64/iris
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/64/iris" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F64%2Firis", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F64%2Firis'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7bf3735a25763a66757d88ecf0f5d3f7065dde40
[INFO] documenting 64/iris against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F64%2Firis" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/64/iris on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/64/iris
[INFO] finished tweaking git repo https://github.com/64/iris
[INFO] tweaked toml for git repo https://github.com/64/iris written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/64/iris already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af9bf2ebe966727dfe819577b7b75be527391c3ff7f8f9dd9f63df02cc1df369
[INFO] running `Command { std: "docker" "start" "-a" "af9bf2ebe966727dfe819577b7b75be527391c3ff7f8f9dd9f63df02cc1df369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af9bf2ebe966727dfe819577b7b75be527391c3ff7f8f9dd9f63df02cc1df369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af9bf2ebe966727dfe819577b7b75be527391c3ff7f8f9dd9f63df02cc1df369", kill_on_drop: false }`
[INFO] [stdout] af9bf2ebe966727dfe819577b7b75be527391c3ff7f8f9dd9f63df02cc1df369
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 836163b9f4e42c41596a8174ea3de2d3e1fcf975c4cabd2c2464839269cca09b
[INFO] running `Command { std: "docker" "start" "-a" "836163b9f4e42c41596a8174ea3de2d3e1fcf975c4cabd2c2464839269cca09b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling sobol_burley v0.1.0
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling openexr-sys v0.7.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling enum_dispatch v0.3.5
[INFO] [stderr]     Checking openexr v0.7.1
[INFO] [stderr]  Documenting iris 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:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(stdarch)]
[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 `iris`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name iris src/main.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=baecb5917c402080 -L dependency=/opt/rustwide/target/debug/deps --extern enum_dispatch=/opt/rustwide/target/debug/deps/libenum_dispatch-52a959cf8cc84983.so --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-f8ae474d490eaa04.rmeta --extern openexr=/opt/rustwide/target/debug/deps/libopenexr-c18a7ac750b90dc5.rmeta --extern sobol_burley=/opt/rustwide/target/debug/deps/libsobol_burley-80150851cc7c2cde.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "836163b9f4e42c41596a8174ea3de2d3e1fcf975c4cabd2c2464839269cca09b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "836163b9f4e42c41596a8174ea3de2d3e1fcf975c4cabd2c2464839269cca09b", kill_on_drop: false }`
[INFO] [stdout] 836163b9f4e42c41596a8174ea3de2d3e1fcf975c4cabd2c2464839269cca09b