[INFO] fetching crate stack-cstr 0.2.0...
[INFO] testing stack-cstr-0.2.0 against 1.95.0 for beta-1.96-2
[INFO] extracting crate stack-cstr 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate stack-cstr 0.2.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate stack-cstr 0.2.0
[INFO] tweaked toml for crates.io crate stack-cstr 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate stack-cstr 0.2.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate stack-cstr 0.2.0 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0621c8d4f67cf1125820df60f33fea5fa256166cf2e96528bbfb7dc426e0b542
[INFO] running `Command { std: "docker" "start" "-a" "0621c8d4f67cf1125820df60f33fea5fa256166cf2e96528bbfb7dc426e0b542", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0621c8d4f67cf1125820df60f33fea5fa256166cf2e96528bbfb7dc426e0b542", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0621c8d4f67cf1125820df60f33fea5fa256166cf2e96528bbfb7dc426e0b542", kill_on_drop: false }`
[INFO] [stdout] 0621c8d4f67cf1125820df60f33fea5fa256166cf2e96528bbfb7dc426e0b542
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5078882bbd8729bc41044e839bbbf543fbda83e0500451f0fc1daa4ba95e8341
[INFO] running `Command { std: "docker" "start" "-a" "5078882bbd8729bc41044e839bbbf543fbda83e0500451f0fc1daa4ba95e8341", kill_on_drop: false }`
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling thiserror-impl v2.0.16
[INFO] [stderr]    Compiling thiserror v2.0.16
[INFO] [stderr]    Compiling stack-cstr v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(slice_internals)]
[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 `stack-cstr` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "5078882bbd8729bc41044e839bbbf543fbda83e0500451f0fc1daa4ba95e8341", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5078882bbd8729bc41044e839bbbf543fbda83e0500451f0fc1daa4ba95e8341", kill_on_drop: false }`
[INFO] [stdout] 5078882bbd8729bc41044e839bbbf543fbda83e0500451f0fc1daa4ba95e8341
