[INFO] cloning repository https://github.com/yvt/Stella2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yvt/Stella2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyvt%2FStella2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyvt%2FStella2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 79bb01d5d11643c50769986796b6fae572e13db7
[INFO] testing yvt/Stella2 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyvt%2FStella2" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yvt/Stella2 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/yvt/Stella2
[INFO] finished tweaking git repo https://github.com/yvt/Stella2
[INFO] tweaked toml for git repo https://github.com/yvt/Stella2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/yvt/Stella2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b30bb7bb0c6b665e2d60ae995e19f6305b359269abdf7da1b61b36d78e09e2a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0b30bb7bb0c6b665e2d60ae995e19f6305b359269abdf7da1b61b36d78e09e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b30bb7bb0c6b665e2d60ae995e19f6305b359269abdf7da1b61b36d78e09e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b30bb7bb0c6b665e2d60ae995e19f6305b359269abdf7da1b61b36d78e09e2a", kill_on_drop: false }`
[INFO] [stdout] 0b30bb7bb0c6b665e2d60ae995e19f6305b359269abdf7da1b61b36d78e09e2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0702d52bb8b8adedd3d83c9bc7ef8a774f3d9b9326f4c656e09691100b1a7e8b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0702d52bb8b8adedd3d83c9bc7ef8a774f3d9b9326f4c656e09691100b1a7e8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]    Compiling codemap v0.1.3
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling cairo-rs v0.8.1
[INFO] [stderr]    Compiling packed_simd v0.3.3
[INFO] [stderr]    Compiling gimli v0.21.0
[INFO] [stderr]    Compiling pango v0.8.0
[INFO] [stderr]    Compiling rgb v0.8.17
[INFO] [stderr]    Compiling object v0.19.0
[INFO] [stderr]    Compiling gdk-pixbuf v0.8.0
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling atk v0.8.0
[INFO] [stderr]    Compiling array_intrusive_list v0.1.0 (/opt/rustwide/workdir/support/array_intrusive_list)
[INFO] [stderr]    Compiling pangocairo v0.9.0
[INFO] [stderr]    Compiling svg v0.5.12
[INFO] [stderr]    Compiling tokenlock v0.3.0
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling float-cmp v0.5.3
[INFO] [stderr]    Compiling fragile v1.0.0
[INFO] [stderr]    Compiling atom2 v0.1.0 (/opt/rustwide/workdir/support/atom2)
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling iota v0.2.1
[INFO] [stderr]    Compiling flags-macro v0.1.4
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> support/atom2/src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(const_fn)] // `const fn` with a constrained type parameter (e.g., `T: PtrSized`)
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling xmlparser v0.13.1
[INFO] [stderr]    Compiling neo_linked_list v0.1.0 (/opt/rustwide/workdir/support/neo_linked_list)
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> support/atom2/src/lib.rs:233:14
[INFO] [stdout]     |
[INFO] [stdout] 233 |             .compare_and_swap(current_ptr as *mut (), new_ptr as *mut (), order);
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling array v0.0.1
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling minisort v0.1.0 (/opt/rustwide/workdir/support/minisort)
[INFO] [stderr] error: could not compile `atom2`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]  --> support/minisort/src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(specialization)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout]   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]   = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0702d52bb8b8adedd3d83c9bc7ef8a774f3d9b9326f4c656e09691100b1a7e8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0702d52bb8b8adedd3d83c9bc7ef8a774f3d9b9326f4c656e09691100b1a7e8b", kill_on_drop: false }`
[INFO] [stdout] 0702d52bb8b8adedd3d83c9bc7ef8a774f3d9b9326f4c656e09691100b1a7e8b