[INFO] cloning repository https://github.com/danielhuang/aoc-2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/danielhuang/aoc-2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielhuang%2Faoc-2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielhuang%2Faoc-2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b16f499a82cd42225ab077875ed9d97fd9c7511d
[INFO] documenting danielhuang/aoc-2020 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%2Fdanielhuang%2Faoc-2020" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/danielhuang/aoc-2020 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-13/source/.cargo/config
[INFO] removed /workspace/builds/worker-13/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/danielhuang/aoc-2020
[INFO] finished tweaking git repo https://github.com/danielhuang/aoc-2020
[INFO] tweaked toml for git repo https://github.com/danielhuang/aoc-2020 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/danielhuang/aoc-2020 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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 56fa7d1008740302cc5a872bfdfcfdb0c10ac4fc9c40593b0ab09df1a715f339
[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" "56fa7d1008740302cc5a872bfdfcfdb0c10ac4fc9c40593b0ab09df1a715f339", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56fa7d1008740302cc5a872bfdfcfdb0c10ac4fc9c40593b0ab09df1a715f339", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56fa7d1008740302cc5a872bfdfcfdb0c10ac4fc9c40593b0ab09df1a715f339", kill_on_drop: false }`
[INFO] [stdout] 56fa7d1008740302cc5a872bfdfcfdb0c10ac4fc9c40593b0ab09df1a715f339
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bc44d99cb540fba724870d5d78a1b3c589410539bf91ab4c7ebf9662f050eede
[INFO] running `Command { std: "docker" "start" "-a" "bc44d99cb540fba724870d5d78a1b3c589410539bf91ab4c7ebf9662f050eede", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling const_fn v0.4.4
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]     Checking futures-sink v0.3.8
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]     Checking futures-io v0.3.8
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]     Checking half v1.6.0
[INFO] [stderr]    Compiling cached_proc_macro_types v0.1.0
[INFO] [stderr]     Checking seahash v3.0.7
[INFO] [stderr]     Checking defaultmap v0.5.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling fasthash-sys v0.3.2
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking futures-task v0.3.8
[INFO] [stderr]     Checking itertools v0.9.0 (https://github.com/rust-itertools/itertools#507d609d)
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking multimap v0.8.2
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling util_proc_macro v0.1.0 (/opt/rustwide/workdir/util/util_proc_macro)
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.18
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]     Checking csv v1.1.5
[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 crossbeam-deque v0.8.0
[INFO] [stderr]     Checking xoroshiro128 v0.3.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking crossbeam v0.8.0
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]     Checking mimalloc v0.1.22
[INFO] [stderr]     Checking fasthash v0.4.0
[INFO] [stderr]    Compiling darling_core v0.10.3
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling propane-macros v0.1.0
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling darling_macro v0.10.3
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]    Compiling darling v0.10.3
[INFO] [stderr]    Compiling cached_proc_macro v0.6.0
[INFO] [stderr]     Checking propane v0.1.0
[INFO] [stderr]     Checking criterion v0.3.3
[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/propane-0.1.0/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(generator_trait)]
[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 compile `propane` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "bc44d99cb540fba724870d5d78a1b3c589410539bf91ab4c7ebf9662f050eede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc44d99cb540fba724870d5d78a1b3c589410539bf91ab4c7ebf9662f050eede", kill_on_drop: false }`
[INFO] [stdout] bc44d99cb540fba724870d5d78a1b3c589410539bf91ab4c7ebf9662f050eede