[INFO] fetching crate ferrite-session 0.1.0...
[INFO] testing ferrite-session-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate ferrite-session 0.1.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate ferrite-session 0.1.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ferrite-session 0.1.0
[INFO] finished tweaking crates.io crate ferrite-session 0.1.0
[INFO] tweaked toml for crates.io crate ferrite-session 0.1.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate ferrite-session 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async-macros v2.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0268e0a46351f3ec64465847b9d57dc40fcc3d71d335d56abffcfbe3fb59b8d2
[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" "0268e0a46351f3ec64465847b9d57dc40fcc3d71d335d56abffcfbe3fb59b8d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0268e0a46351f3ec64465847b9d57dc40fcc3d71d335d56abffcfbe3fb59b8d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0268e0a46351f3ec64465847b9d57dc40fcc3d71d335d56abffcfbe3fb59b8d2", kill_on_drop: false }`
[INFO] [stdout] 0268e0a46351f3ec64465847b9d57dc40fcc3d71d335d56abffcfbe3fb59b8d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1128e65ee45c5fd328f32c97697b6b4c9425957fade8cbb2a6952ad4f5450f08
[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" "1128e65ee45c5fd328f32c97697b6b4c9425957fade8cbb2a6952ad4f5450f08", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling futures-channel v0.3.8
[INFO] [stderr]    Compiling async-macros v2.0.0
[INFO] [stderr]    Compiling nb-connect v1.0.2
[INFO] [stderr]    Compiling polling v2.0.2
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling async-io v1.2.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling async-global-executor v1.4.3
[INFO] [stderr]    Compiling pin-project-internal v1.0.1
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling async-std v1.7.0
[INFO] [stderr]    Compiling pin-project v1.0.1
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling futures-executor v0.3.8
[INFO] [stderr]    Compiling futures v0.3.8
[INFO] [stderr]    Compiling ferrite-session v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `ferrite-session`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name internal_choice --edition=2018 src/bin/internal_choice.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=ab9ff73407498dd9 -C extra-filename=-ab9ff73407498dd9 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern async_macros=/opt/rustwide/target/debug/deps/libasync_macros-f4d7cd3f1f078d04.rlib --extern async_std=/opt/rustwide/target/debug/deps/libasync_std-d6c6634a97473bbc.rlib --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-105d55669bbbb492.rlib --extern ferrite_session=/opt/rustwide/target/debug/deps/libferrite_session-cddd9133bd47a80a.rlib --extern futures=/opt/rustwide/target/debug/deps/libfutures-234ff72dd46a2e8d.rlib --extern log=/opt/rustwide/target/debug/deps/liblog-9eadb0415de29753.rlib --extern paste=/opt/rustwide/target/debug/deps/libpaste-90c10bde96d03b5d.so --extern rand=/opt/rustwide/target/debug/deps/librand-a9c09fd25b234ac2.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1128e65ee45c5fd328f32c97697b6b4c9425957fade8cbb2a6952ad4f5450f08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1128e65ee45c5fd328f32c97697b6b4c9425957fade8cbb2a6952ad4f5450f08", kill_on_drop: false }`
[INFO] [stdout] 1128e65ee45c5fd328f32c97697b6b4c9425957fade8cbb2a6952ad4f5450f08