[INFO] fetching crate restack 0.7.0...
[INFO] testing restack-0.7.0 against 1.76.0 for beta-1.77-1
[INFO] extracting crate restack 0.7.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate restack 0.7.0 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate restack 0.7.0
[INFO] finished tweaking crates.io crate restack 0.7.0
[INFO] tweaked toml for crates.io crate restack 0.7.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate restack 0.7.0 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" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded indoc v2.0.1
[INFO] [stderr]   Downloaded lexopt v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d5fb0b7aa70d6b7ac41f265ce0ff72f57a932d384a09354f2ff437236744b00
[INFO] running `Command { std: "docker" "start" "-a" "8d5fb0b7aa70d6b7ac41f265ce0ff72f57a932d384a09354f2ff437236744b00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d5fb0b7aa70d6b7ac41f265ce0ff72f57a932d384a09354f2ff437236744b00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d5fb0b7aa70d6b7ac41f265ce0ff72f57a932d384a09354f2ff437236744b00", kill_on_drop: false }`
[INFO] [stdout] 8d5fb0b7aa70d6b7ac41f265ce0ff72f57a932d384a09354f2ff437236744b00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c00ddd6300e1cf2bcc56b29d8fe0d0a6b130e6fdc71bc4c277992188eeb25ec0
[INFO] running `Command { std: "docker" "start" "-a" "c00ddd6300e1cf2bcc56b29d8fe0d0a6b130e6fdc71bc4c277992188eeb25ec0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling rustix v0.37.20
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]    Compiling linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling tempfile v3.6.0
[INFO] [stderr]    Compiling fastrand v1.9.0
[INFO] [stderr]    Compiling lexopt v0.3.0
[INFO] [stderr]    Compiling restack v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/main.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(byte_slice_trim_ascii)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/main.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(exit_status_error)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/main.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![feature(io_error_more)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/main.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![feature(slice_group_by)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[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 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "c00ddd6300e1cf2bcc56b29d8fe0d0a6b130e6fdc71bc4c277992188eeb25ec0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c00ddd6300e1cf2bcc56b29d8fe0d0a6b130e6fdc71bc4c277992188eeb25ec0", kill_on_drop: false }`
[INFO] [stdout] c00ddd6300e1cf2bcc56b29d8fe0d0a6b130e6fdc71bc4c277992188eeb25ec0
[INFO] testing restack-0.7.0 against beta-2024-02-10 for beta-1.77-1
[INFO] extracting crate restack 0.7.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate restack 0.7.0 on toolchain beta-2024-02-10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc2/source/rust-toolchain
[INFO] started tweaking crates.io crate restack 0.7.0
[INFO] finished tweaking crates.io crate restack 0.7.0
[INFO] tweaked toml for crates.io crate restack 0.7.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate restack 0.7.0 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" "+beta-2024-02-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5238cd7997def03cccb8d1089372ba45239c6bb0394e692b796e1227669ec537
[INFO] running `Command { std: "docker" "start" "-a" "5238cd7997def03cccb8d1089372ba45239c6bb0394e692b796e1227669ec537", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5238cd7997def03cccb8d1089372ba45239c6bb0394e692b796e1227669ec537", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5238cd7997def03cccb8d1089372ba45239c6bb0394e692b796e1227669ec537", kill_on_drop: false }`
[INFO] [stdout] 5238cd7997def03cccb8d1089372ba45239c6bb0394e692b796e1227669ec537
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 025c6b5299349266eff151577ba3c1faa720792a6a0648f830658155851963c4
[INFO] running `Command { std: "docker" "start" "-a" "025c6b5299349266eff151577ba3c1faa720792a6a0648f830658155851963c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling rustix v0.37.20
[INFO] [stderr]    Compiling linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]    Compiling fastrand v1.9.0
[INFO] [stderr]    Compiling tempfile v3.6.0
[INFO] [stderr]    Compiling lexopt v0.3.0
[INFO] [stderr]    Compiling restack v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/main.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(byte_slice_trim_ascii)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/main.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(exit_status_error)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/main.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![feature(io_error_more)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/main.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![feature(slice_group_by)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `slice_group_by` has been stable since 1.77.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/main.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![feature(slice_group_by)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted
[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 5 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "025c6b5299349266eff151577ba3c1faa720792a6a0648f830658155851963c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "025c6b5299349266eff151577ba3c1faa720792a6a0648f830658155851963c4", kill_on_drop: false }`
[INFO] [stdout] 025c6b5299349266eff151577ba3c1faa720792a6a0648f830658155851963c4
