[INFO] cloning repository https://github.com/CloneRob/PL-0-Compiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CloneRob/PL-0-Compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCloneRob%2FPL-0-Compiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCloneRob%2FPL-0-Compiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 87e0fdfe3c0d347cdb9cf3c835ab98df96a99b91
[INFO] testing CloneRob/PL-0-Compiler against beta-2023-04-20 for beta-1.70-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCloneRob%2FPL-0-Compiler" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CloneRob/PL-0-Compiler on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CloneRob/PL-0-Compiler
[INFO] finished tweaking git repo https://github.com/CloneRob/PL-0-Compiler
[INFO] tweaked toml for git repo https://github.com/CloneRob/PL-0-Compiler written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/CloneRob/PL-0-Compiler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded regex-syntax v0.3.1
[INFO] [stderr]   Downloaded aho-corasick v0.5.1
[INFO] [stderr]   Downloaded regex_macros v0.1.35
[INFO] [stderr]   Downloaded thread_local v0.2.5
[INFO] [stderr]   Downloaded libc v0.2.10
[INFO] [stderr]   Downloaded regex v0.1.68
[INFO] [stderr]   Downloaded winapi v0.2.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8b5d65c77fe277c1e94c09bc6e771dd0481240c1d210fd7913cf286cc33391f
[INFO] running `Command { std: "docker" "start" "-a" "e8b5d65c77fe277c1e94c09bc6e771dd0481240c1d210fd7913cf286cc33391f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8b5d65c77fe277c1e94c09bc6e771dd0481240c1d210fd7913cf286cc33391f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8b5d65c77fe277c1e94c09bc6e771dd0481240c1d210fd7913cf286cc33391f", kill_on_drop: false }`
[INFO] [stdout] e8b5d65c77fe277c1e94c09bc6e771dd0481240c1d210fd7913cf286cc33391f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be9c196c046a609c1a7a7d3e73592be7f423cc6137a3d581f44bef00be9e379d
[INFO] running `Command { std: "docker" "start" "-a" "be9c196c046a609c1a7a7d3e73592be7f423cc6137a3d581f44bef00be9e379d", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling libc v0.2.10
[INFO] [stderr]    Compiling winapi v0.2.6
[INFO] [stderr]    Compiling regex-syntax v0.3.1
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling aho-corasick v0.5.1
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling thread_local v0.2.5
[INFO] [stderr]    Compiling regex v0.1.68
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-0.1.68/src/lib.rs:501:42
[INFO] [stdout]     |
[INFO] [stdout] 501 | #![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` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "be9c196c046a609c1a7a7d3e73592be7f423cc6137a3d581f44bef00be9e379d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be9c196c046a609c1a7a7d3e73592be7f423cc6137a3d581f44bef00be9e379d", kill_on_drop: false }`
[INFO] [stdout] be9c196c046a609c1a7a7d3e73592be7f423cc6137a3d581f44bef00be9e379d
