[INFO] cloning repository https://github.com/K-atc/teapot-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/K-atc/teapot-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FK-atc%2Fteapot-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FK-atc%2Fteapot-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6ce655b2d58ba9a5a2fee87c9fccb9e17adeacaa
[INFO] documenting K-atc/teapot-rs 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%2FK-atc%2Fteapot-rs" "/workspace/builds/worker-22/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-22/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/K-atc/teapot-rs 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/K-atc/teapot-rs
[INFO] finished tweaking git repo https://github.com/K-atc/teapot-rs
[INFO] tweaked toml for git repo https://github.com/K-atc/teapot-rs written to /workspace/builds/worker-22/source/Cargo.toml
[INFO] crate git repo https://github.com/K-atc/teapot-rs 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-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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] 8594aa29645e521f06523cbac173f32fbd1c4ca2798caedd08fe86ba40350203
[INFO] running `Command { std: "docker" "start" "-a" "8594aa29645e521f06523cbac173f32fbd1c4ca2798caedd08fe86ba40350203", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8594aa29645e521f06523cbac173f32fbd1c4ca2798caedd08fe86ba40350203", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8594aa29645e521f06523cbac173f32fbd1c4ca2798caedd08fe86ba40350203", kill_on_drop: false }`
[INFO] [stdout] 8594aa29645e521f06523cbac173f32fbd1c4ca2798caedd08fe86ba40350203
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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] 56e2b0cb16f6d53af2c1aa26fceba5da4add9c7755c20329213db9e31cbf1f9a
[INFO] running `Command { std: "docker" "start" "-a" "56e2b0cb16f6d53af2c1aa26fceba5da4add9c7755c20329213db9e31cbf1f9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling libc v0.2.118
[INFO] [stderr]     Checking ahash v0.4.7
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking acid_io v0.1.0 (https://github.com/K-atc/acid_io.git#bda7898d)
[INFO] [stderr]  Documenting teapot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(binary_heap_into_iter_sorted)]
[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 `teapot`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name teapot src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="difference"' --cfg 'feature="metrics"' --cfg 'feature="std"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=2ed8484b6aeb10e4 -L dependency=/opt/rustwide/target/debug/deps --extern acid_io=/opt/rustwide/target/debug/deps/libacid_io-3b1e4a633e7b71ac.rmeta --extern difference=/opt/rustwide/target/debug/deps/libdifference-6e6f557abf504c74.rmeta --extern hashbrown=/opt/rustwide/target/debug/deps/libhashbrown-92224d0d2b3385ef.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "56e2b0cb16f6d53af2c1aa26fceba5da4add9c7755c20329213db9e31cbf1f9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56e2b0cb16f6d53af2c1aa26fceba5da4add9c7755c20329213db9e31cbf1f9a", kill_on_drop: false }`
[INFO] [stdout] 56e2b0cb16f6d53af2c1aa26fceba5da4add9c7755c20329213db9e31cbf1f9a