[INFO] fetching crate coop_heap 0.1.1...
[INFO] testing coop_heap-0.1.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate coop_heap 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate coop_heap 0.1.1
[INFO] finished tweaking crates.io crate coop_heap 0.1.1
[INFO] tweaked toml for crates.io crate coop_heap 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate coop_heap 0.1.1 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 3e5deef667d510f7c6c5e2f15f76e368f5c9f356561f04d9b1470e4dbe5569c6
[INFO] running `Command { std: "docker" "start" "-a" "3e5deef667d510f7c6c5e2f15f76e368f5c9f356561f04d9b1470e4dbe5569c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e5deef667d510f7c6c5e2f15f76e368f5c9f356561f04d9b1470e4dbe5569c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e5deef667d510f7c6c5e2f15f76e368f5c9f356561f04d9b1470e4dbe5569c6", kill_on_drop: false }`
[INFO] [stdout] 3e5deef667d510f7c6c5e2f15f76e368f5c9f356561f04d9b1470e4dbe5569c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] f1eb99aa95c0990f705d45029eec6d97d8054661450c359edeca9a6887f96900
[INFO] running `Command { std: "docker" "start" "-a" "f1eb99aa95c0990f705d45029eec6d97d8054661450c359edeca9a6887f96900", kill_on_drop: false }`
[INFO] [stderr]    Compiling coop_heap 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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(allocator_api, slice_ptr_get)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: ambiguous glob re-exports
[INFO] [stdout]  --> src/lib.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use alloc::*;
[INFO] [stdout]   |         ^^^^^^^^ the name `PtrAndMeta` in the type namespace is first re-exported here
[INFO] [stdout] 8 | pub use global::*;
[INFO] [stdout]   |         --------- but the name `PtrAndMeta` in the type namespace is also re-exported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(ambiguous_glob_reexports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `coop_heap` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f1eb99aa95c0990f705d45029eec6d97d8054661450c359edeca9a6887f96900", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1eb99aa95c0990f705d45029eec6d97d8054661450c359edeca9a6887f96900", kill_on_drop: false }`
[INFO] [stdout] f1eb99aa95c0990f705d45029eec6d97d8054661450c359edeca9a6887f96900