[INFO] fetching crate zone-alloc 0.4.4...
[INFO] testing zone-alloc-0.4.4 against 1.90.0 for beta-1.91-3
[INFO] extracting crate zone-alloc 0.4.4 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate zone-alloc 0.4.4
[INFO] finished tweaking crates.io crate zone-alloc 0.4.4
[INFO] tweaked toml for crates.io crate zone-alloc 0.4.4 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate zone-alloc 0.4.4 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate zone-alloc 0.4.4 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-ident v1.0.13
[INFO] [stderr]   Downloaded quote v1.0.37
[INFO] [stderr]   Downloaded once_cell v1.20.2
[INFO] [stderr]   Downloaded proc-macro2 v1.0.87
[INFO] [stderr]   Downloaded allocator-api2 v0.2.18
[INFO] [stderr]   Downloaded syn v2.0.79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee60f4b0990e6d1048ea8a0e106393cf997f4bccfc7fbf13fb0cc86a9d0ceb8e
[INFO] running `Command { std: "docker" "start" "-a" "ee60f4b0990e6d1048ea8a0e106393cf997f4bccfc7fbf13fb0cc86a9d0ceb8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee60f4b0990e6d1048ea8a0e106393cf997f4bccfc7fbf13fb0cc86a9d0ceb8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee60f4b0990e6d1048ea8a0e106393cf997f4bccfc7fbf13fb0cc86a9d0ceb8e", kill_on_drop: false }`
[INFO] [stdout] ee60f4b0990e6d1048ea8a0e106393cf997f4bccfc7fbf13fb0cc86a9d0ceb8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d5c5234ffe5cd8b73cb8173c5461498e48d83dd61098f05f0fc3acadf8ae98d
[INFO] running `Command { std: "docker" "start" "-a" "4d5c5234ffe5cd8b73cb8173c5461498e48d83dd61098f05f0fc3acadf8ae98d", kill_on_drop: false }`
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling once_cell v1.20.2
[INFO] [stderr]    Compiling allocator-api2 v0.2.18
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling zone-alloc v0.4.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:167:1
[INFO] [stdout]     |
[INFO] [stdout] 167 | #![feature(dropck_eyepatch)]
[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:168:1
[INFO] [stdout]     |
[INFO] [stdout] 168 | #![feature(sync_unsafe_cell)]
[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:169:1
[INFO] [stdout]     |
[INFO] [stdout] 169 | #![feature(trait_alias)]
[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 `zone-alloc` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "4d5c5234ffe5cd8b73cb8173c5461498e48d83dd61098f05f0fc3acadf8ae98d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d5c5234ffe5cd8b73cb8173c5461498e48d83dd61098f05f0fc3acadf8ae98d", kill_on_drop: false }`
[INFO] [stdout] 4d5c5234ffe5cd8b73cb8173c5461498e48d83dd61098f05f0fc3acadf8ae98d