[INFO] fetching crate hacspec 0.2.0-beta.4...
[INFO] testing hacspec-0.2.0-beta.4 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate hacspec 0.2.0-beta.4 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate hacspec 0.2.0-beta.4 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1/source/rust-toolchain
[INFO] started tweaking crates.io crate hacspec 0.2.0-beta.4
[INFO] finished tweaking crates.io crate hacspec 0.2.0-beta.4
[INFO] tweaked toml for crates.io crate hacspec 0.2.0-beta.4 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate hacspec 0.2.0-beta.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 75532f67005316e9d666b561ee72e547078d89077e435ec179f4e157f76d828c
[INFO] running `Command { std: "docker" "start" "-a" "75532f67005316e9d666b561ee72e547078d89077e435ec179f4e157f76d828c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75532f67005316e9d666b561ee72e547078d89077e435ec179f4e157f76d828c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75532f67005316e9d666b561ee72e547078d89077e435ec179f4e157f76d828c", kill_on_drop: false }`
[INFO] [stdout] 75532f67005316e9d666b561ee72e547078d89077e435ec179f4e157f76d828c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 288835630eab5478ca4e879947c70e900c3e1dc6643ea52ed485886ffbc19d72
[INFO] running `Command { std: "docker" "start" "-a" "288835630eab5478ca4e879947c70e900c3e1dc6643ea52ed485886ffbc19d72", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling typed-arena v2.0.1
[INFO] [stderr]    Compiling im v15.0.0
[INFO] [stderr]    Compiling bitmaps v2.1.0
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling pretty v0.10.0
[INFO] [stderr]    Compiling sized-chunks v0.6.4
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling hacspec-util v0.1.0-beta.1
[INFO] [stderr]    Compiling hacspec v0.2.0-beta.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `rustc_ast`
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate rustc_ast;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hacspec` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "288835630eab5478ca4e879947c70e900c3e1dc6643ea52ed485886ffbc19d72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "288835630eab5478ca4e879947c70e900c3e1dc6643ea52ed485886ffbc19d72", kill_on_drop: false }`
[INFO] [stdout] 288835630eab5478ca4e879947c70e900c3e1dc6643ea52ed485886ffbc19d72