[INFO] fetching crate restack 0.8.0...
[INFO] testing restack-0.8.0 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate restack 0.8.0 into /workspace/builds/worker-5-tc1/source
[INFO] removed /workspace/builds/worker-5-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate restack 0.8.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate restack 0.8.0
[INFO] tweaked toml for crates.io crate restack 0.8.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate restack 0.8.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate restack 0.8.0 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fastrand v2.0.1
[INFO] [stderr]   Downloaded rstest v0.21.0
[INFO] [stderr]   Downloaded rstest_macros v0.21.0
[INFO] [stderr]   Downloaded bitflags v2.4.1
[INFO] [stderr]   Downloaded futures-core v0.3.29
[INFO] [stderr]   Downloaded shared_child v1.0.0
[INFO] [stderr]   Downloaded os_pipe v1.1.4
[INFO] [stderr]   Downloaded futures-macro v0.3.29
[INFO] [stderr]   Downloaded futures-sink v0.3.29
[INFO] [stderr]   Downloaded indoc v2.0.5
[INFO] [stderr]   Downloaded futures-task v0.3.29
[INFO] [stderr]   Downloaded futures-io v0.3.29
[INFO] [stderr]   Downloaded futures-channel v0.3.29
[INFO] [stderr]   Downloaded futures-executor v0.3.29
[INFO] [stderr]   Downloaded quote v1.0.33
[INFO] [stderr]   Downloaded duct v0.13.7
[INFO] [stderr]   Downloaded once_cell v1.18.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.70
[INFO] [stderr]   Downloaded lexopt v0.3.0
[INFO] [stderr]   Downloaded futures v0.3.29
[INFO] [stderr]   Downloaded pretty_assertions v1.4.0
[INFO] [stderr]   Downloaded syn v2.0.39
[INFO] [stderr]   Downloaded futures-util v0.3.29
[INFO] [stderr]   Downloaded regex v1.10.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] cb3c0273a66f44f0e27e39d6ddbc60621d6a08c08bb7acfe70da4ab637b542ad
[INFO] running `Command { std: "docker" "start" "cb3c0273a66f44f0e27e39d6ddbc60621d6a08c08bb7acfe70da4ab637b542ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb3c0273a66f44f0e27e39d6ddbc60621d6a08c08bb7acfe70da4ab637b542ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "cb3c0273a66f44f0e27e39d6ddbc60621d6a08c08bb7acfe70da4ab637b542ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb3c0273a66f44f0e27e39d6ddbc60621d6a08c08bb7acfe70da4ab637b542ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "cb3c0273a66f44f0e27e39d6ddbc60621d6a08c08bb7acfe70da4ab637b542ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.34
[INFO] [stderr]    Compiling bitflags v2.4.1
[INFO] [stderr]    Compiling anyhow v1.0.86
[INFO] [stderr]    Compiling linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling fastrand v2.0.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling lexopt v0.3.0
[INFO] [stderr]    Compiling tempfile v3.10.1
[INFO] [stderr]    Compiling restack v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/main.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(exit_status_error)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `restack` (bin "restack") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "cb3c0273a66f44f0e27e39d6ddbc60621d6a08c08bb7acfe70da4ab637b542ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb3c0273a66f44f0e27e39d6ddbc60621d6a08c08bb7acfe70da4ab637b542ad", kill_on_drop: false }`
[INFO] [stdout] cb3c0273a66f44f0e27e39d6ddbc60621d6a08c08bb7acfe70da4ab637b542ad
