[INFO] fetching crate capture-stdio 0.1.1...
[INFO] testing capture-stdio-0.1.1 against 1.76.0 for beta-1.77-1
[INFO] extracting crate capture-stdio 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate capture-stdio 0.1.1 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 capture-stdio 0.1.1
[INFO] finished tweaking crates.io crate capture-stdio 0.1.1
[INFO] tweaked toml for crates.io crate capture-stdio 0.1.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded os_pipe v1.1.5
[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] c4ea2558add8389ac9426b55e69caf776e08cc574c593259e6f648a487faed63
[INFO] running `Command { std: "docker" "start" "-a" "c4ea2558add8389ac9426b55e69caf776e08cc574c593259e6f648a487faed63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4ea2558add8389ac9426b55e69caf776e08cc574c593259e6f648a487faed63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4ea2558add8389ac9426b55e69caf776e08cc574c593259e6f648a487faed63", kill_on_drop: false }`
[INFO] [stdout] c4ea2558add8389ac9426b55e69caf776e08cc574c593259e6f648a487faed63
[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] bf99d0a3250ed99429a6415efb80e90dc1bed13f9557cbdc30524f87e0718af6
[INFO] running `Command { std: "docker" "start" "-a" "bf99d0a3250ed99429a6415efb80e90dc1bed13f9557cbdc30524f87e0718af6", kill_on_drop: false }`
[INFO] [stderr]    Compiling os_pipe v1.1.5
[INFO] [stderr]    Compiling capture-stdio v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(internal_output_capture)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 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 `capture-stdio` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "bf99d0a3250ed99429a6415efb80e90dc1bed13f9557cbdc30524f87e0718af6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf99d0a3250ed99429a6415efb80e90dc1bed13f9557cbdc30524f87e0718af6", kill_on_drop: false }`
[INFO] [stdout] bf99d0a3250ed99429a6415efb80e90dc1bed13f9557cbdc30524f87e0718af6
[INFO] testing capture-stdio-0.1.1 against beta-2024-02-10 for beta-1.77-1
[INFO] extracting crate capture-stdio 0.1.1 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate capture-stdio 0.1.1 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 capture-stdio 0.1.1
[INFO] finished tweaking crates.io crate capture-stdio 0.1.1
[INFO] tweaked toml for crates.io crate capture-stdio 0.1.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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] 9256fa237501bd5bbc742f0b2dad9d37c9e11362b51c7ebcff51a73bdcf1c787
[INFO] running `Command { std: "docker" "start" "-a" "9256fa237501bd5bbc742f0b2dad9d37c9e11362b51c7ebcff51a73bdcf1c787", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9256fa237501bd5bbc742f0b2dad9d37c9e11362b51c7ebcff51a73bdcf1c787", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9256fa237501bd5bbc742f0b2dad9d37c9e11362b51c7ebcff51a73bdcf1c787", kill_on_drop: false }`
[INFO] [stdout] 9256fa237501bd5bbc742f0b2dad9d37c9e11362b51c7ebcff51a73bdcf1c787
[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] 19ea26ae5b2dc1c35fbdf1d5fc47bf0006cf4746295056e512b66b56b1a28adc
[INFO] running `Command { std: "docker" "start" "-a" "19ea26ae5b2dc1c35fbdf1d5fc47bf0006cf4746295056e512b66b56b1a28adc", kill_on_drop: false }`
[INFO] [stderr]    Compiling os_pipe v1.1.5
[INFO] [stderr]    Compiling capture-stdio v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(internal_output_capture)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 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 `capture-stdio` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "19ea26ae5b2dc1c35fbdf1d5fc47bf0006cf4746295056e512b66b56b1a28adc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19ea26ae5b2dc1c35fbdf1d5fc47bf0006cf4746295056e512b66b56b1a28adc", kill_on_drop: false }`
[INFO] [stdout] 19ea26ae5b2dc1c35fbdf1d5fc47bf0006cf4746295056e512b66b56b1a28adc
