[INFO] fetching crate ask-cli 0.2.1...
[INFO] testing ask-cli-0.2.1 against 1.75.0 for beta-1.76-1
[INFO] extracting crate ask-cli 0.2.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate ask-cli 0.2.1 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate ask-cli 0.2.1
[INFO] finished tweaking crates.io crate ask-cli 0.2.1
[INFO] tweaked toml for crates.io crate ask-cli 0.2.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate ask-cli 0.2.1 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" "+1.75.0" "fetch" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded humantime-serde v1.1.1
[INFO] [stderr]   Downloaded filetime v0.2.22
[INFO] [stderr]   Downloaded trycmd v0.14.19
[INFO] [stderr]   Downloaded serde_spanned v0.6.4
[INFO] [stderr]   Downloaded rustdoc-types v0.23.0
[INFO] [stderr]   Downloaded snapbox-macros v0.3.6
[INFO] [stderr]   Downloaded cargo-manifest v0.9.0
[INFO] [stderr]   Downloaded semver v1.0.20
[INFO] [stderr]   Downloaded rustdoc-json v0.8.7
[INFO] [stderr]   Downloaded content_inspector v0.2.4
[INFO] [stderr]   Downloaded os_pipe v1.1.4
[INFO] [stderr]   Downloaded cargo-platform v0.1.5
[INFO] [stderr]   Downloaded snapbox v0.4.14
[INFO] [stderr]   Downloaded cargo_metadata v0.17.0
[INFO] [stderr]   Downloaded hashbag v0.1.11
[INFO] [stderr]   Downloaded public-api v0.32.0
[INFO] [stderr]   Downloaded winnow v0.5.19
[INFO] [stderr]   Downloaded expect-test v1.4.1
[INFO] [stderr]   Downloaded dissimilar v1.0.7
[INFO] [stderr]   Downloaded similar v2.3.0
[INFO] [stderr]   Downloaded supercilex-tests v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f7ba7cd5ea503c26dbef078c786fe7399b940333639341b0f73c091052f1271
[INFO] running `Command { std: "docker" "start" "-a" "1f7ba7cd5ea503c26dbef078c786fe7399b940333639341b0f73c091052f1271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f7ba7cd5ea503c26dbef078c786fe7399b940333639341b0f73c091052f1271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f7ba7cd5ea503c26dbef078c786fe7399b940333639341b0f73c091052f1271", kill_on_drop: false }`
[INFO] [stdout] 1f7ba7cd5ea503c26dbef078c786fe7399b940333639341b0f73c091052f1271
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c70954dd49bb55e94936ff6e77f0cbc42ff9b606d3f88602c403393195f4be4b
[INFO] running `Command { std: "docker" "start" "-a" "c70954dd49bb55e94936ff6e77f0cbc42ff9b606d3f88602c403393195f4be4b", kill_on_drop: false }`
[INFO] [stderr]    Compiling ask-cli v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(read_buf)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(core_io_borrowed_buf)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `ask-cli` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "c70954dd49bb55e94936ff6e77f0cbc42ff9b606d3f88602c403393195f4be4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c70954dd49bb55e94936ff6e77f0cbc42ff9b606d3f88602c403393195f4be4b", kill_on_drop: false }`
[INFO] [stdout] c70954dd49bb55e94936ff6e77f0cbc42ff9b606d3f88602c403393195f4be4b
[INFO] testing ask-cli-0.2.1 against beta-2023-12-22 for beta-1.76-1
[INFO] extracting crate ask-cli 0.2.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate ask-cli 0.2.1 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7-tc2/source/rust-toolchain
[INFO] started tweaking crates.io crate ask-cli 0.2.1
[INFO] finished tweaking crates.io crate ask-cli 0.2.1
[INFO] tweaked toml for crates.io crate ask-cli 0.2.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate ask-cli 0.2.1 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-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9e5f16f1b944fe32a17063bf4fc648977f694c28392a23b79328bd5e07b47cb
[INFO] running `Command { std: "docker" "start" "-a" "c9e5f16f1b944fe32a17063bf4fc648977f694c28392a23b79328bd5e07b47cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9e5f16f1b944fe32a17063bf4fc648977f694c28392a23b79328bd5e07b47cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9e5f16f1b944fe32a17063bf4fc648977f694c28392a23b79328bd5e07b47cb", kill_on_drop: false }`
[INFO] [stdout] c9e5f16f1b944fe32a17063bf4fc648977f694c28392a23b79328bd5e07b47cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3a7ffee76b63f184c9280a113ec83dca2648418c9befeec7e4461e2b9ace8ff
[INFO] running `Command { std: "docker" "start" "-a" "f3a7ffee76b63f184c9280a113ec83dca2648418c9befeec7e4461e2b9ace8ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling ask-cli v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(read_buf)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(core_io_borrowed_buf)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `ask-cli` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "f3a7ffee76b63f184c9280a113ec83dca2648418c9befeec7e4461e2b9ace8ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3a7ffee76b63f184c9280a113ec83dca2648418c9befeec7e4461e2b9ace8ff", kill_on_drop: false }`
[INFO] [stdout] f3a7ffee76b63f184c9280a113ec83dca2648418c9befeec7e4461e2b9ace8ff
