[INFO] cloning repository https://github.com/Dylan-DPC/cargo-stabilize
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Dylan-DPC/cargo-stabilize" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDylan-DPC%2Fcargo-stabilize", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDylan-DPC%2Fcargo-stabilize'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 33f6bc0d22f9d2c5f4f7ca3633f0a0090c769633
[INFO] documenting Dylan-DPC/cargo-stabilize 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%2FDylan-DPC%2Fcargo-stabilize" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Dylan-DPC/cargo-stabilize 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/Dylan-DPC/cargo-stabilize
[INFO] finished tweaking git repo https://github.com/Dylan-DPC/cargo-stabilize
[INFO] tweaked toml for git repo https://github.com/Dylan-DPC/cargo-stabilize written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/Dylan-DPC/cargo-stabilize 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] a97fd8cbb6db6af9138514f73124029dbad360eb624588ebc4be54738758ffb1
[INFO] running `Command { std: "docker" "start" "-a" "a97fd8cbb6db6af9138514f73124029dbad360eb624588ebc4be54738758ffb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a97fd8cbb6db6af9138514f73124029dbad360eb624588ebc4be54738758ffb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a97fd8cbb6db6af9138514f73124029dbad360eb624588ebc4be54738758ffb1", kill_on_drop: false }`
[INFO] [stdout] a97fd8cbb6db6af9138514f73124029dbad360eb624588ebc4be54738758ffb1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] bd2b0a3ea655888e1b6f541048899ef78d514997e2e99c83ac16de3c9ee724df
[INFO] running `Command { std: "docker" "start" "-a" "bd2b0a3ea655888e1b6f541048899ef78d514997e2e99c83ac16de3c9ee724df", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking strsim v0.9.3
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]    Compiling clap_derive v0.3.0 (https://github.com/clap-rs/clap_derive#2622165b)
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking walkdir v2.2.9
[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/regex-1.3.1/src/lib.rs:617:34
[INFO] [stdout]     |
[INFO] [stdout] 617 | #![cfg_attr(feature = "pattern", feature(pattern))]
[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 `regex` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "bd2b0a3ea655888e1b6f541048899ef78d514997e2e99c83ac16de3c9ee724df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd2b0a3ea655888e1b6f541048899ef78d514997e2e99c83ac16de3c9ee724df", kill_on_drop: false }`
[INFO] [stdout] bd2b0a3ea655888e1b6f541048899ef78d514997e2e99c83ac16de3c9ee724df
