[INFO] cloning repository https://github.com/jclulow/festival-of-stress
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jclulow/festival-of-stress" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjclulow%2Ffestival-of-stress", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjclulow%2Ffestival-of-stress'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f68aecfbcd7ffd83b67fe4b36fadfc25fc26e777
[INFO] documenting jclulow/festival-of-stress 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%2Fjclulow%2Ffestival-of-stress" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jclulow/festival-of-stress 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] removed /workspace/builds/worker-4/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/jclulow/festival-of-stress
[INFO] finished tweaking git repo https://github.com/jclulow/festival-of-stress
[INFO] tweaked toml for git repo https://github.com/jclulow/festival-of-stress written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/jclulow/festival-of-stress 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 3839c4064fb2962a19fa0ef883f5249baa60eb4fa5e22b8b7bcafaa385e6af32
[INFO] running `Command { std: "docker" "start" "-a" "3839c4064fb2962a19fa0ef883f5249baa60eb4fa5e22b8b7bcafaa385e6af32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3839c4064fb2962a19fa0ef883f5249baa60eb4fa5e22b8b7bcafaa385e6af32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3839c4064fb2962a19fa0ef883f5249baa60eb4fa5e22b8b7bcafaa385e6af32", kill_on_drop: false }`
[INFO] [stdout] 3839c4064fb2962a19fa0ef883f5249baa60eb4fa5e22b8b7bcafaa385e6af32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 04570d1873ac0de512255d944eed0e22dfebd5fc8f21cc7e658b5d7a97f287c8
[INFO] running `Command { std: "docker" "start" "-a" "04570d1873ac0de512255d944eed0e22dfebd5fc8f21cc7e658b5d7a97f287c8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking slog-term v2.8.0
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking jmclib v0.1.0 (https://github.com/jclulow/rust-jmclib#6bd3ef80)
[INFO] [stderr]  Documenting stress v0.0.0 (/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(command_access)]
[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 `stress`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name stress src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=cf008cc45a7a7255 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-54553145b98c6eed.rmeta --extern atty=/opt/rustwide/target/debug/deps/libatty-5a01726b27cf1cc0.rmeta --extern getopts=/opt/rustwide/target/debug/deps/libgetopts-2351748c1aefaf25.rmeta --extern jmclib=/opt/rustwide/target/debug/deps/libjmclib-d5b27c9afe2493f4.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-cc025d830a8c9e0d.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-045e5ceedfe458e1.rmeta --extern rand_chacha=/opt/rustwide/target/debug/deps/librand_chacha-3c3ee9eb7b75b648.rmeta --extern slog=/opt/rustwide/target/debug/deps/libslog-3c33bc7a533a96d2.rmeta --extern slog_term=/opt/rustwide/target/debug/deps/libslog_term-77fef9418a6553a3.rmeta --extern walkdir=/opt/rustwide/target/debug/deps/libwalkdir-d3d6186354e1d0a7.rmeta --cap-lints=warn --crate-version 0.0.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "04570d1873ac0de512255d944eed0e22dfebd5fc8f21cc7e658b5d7a97f287c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04570d1873ac0de512255d944eed0e22dfebd5fc8f21cc7e658b5d7a97f287c8", kill_on_drop: false }`
[INFO] [stdout] 04570d1873ac0de512255d944eed0e22dfebd5fc8f21cc7e658b5d7a97f287c8