[INFO] fetching crate entity_component 0.99.0...
[INFO] testing entity_component-0.99.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate entity_component 0.99.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate entity_component 0.99.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate entity_component 0.99.0
[INFO] finished tweaking crates.io crate entity_component 0.99.0
[INFO] tweaked toml for crates.io crate entity_component 0.99.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate entity_component 0.99.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4cfed12d7b47a6616a54ec7a4d100bb49120c5638237aa594698ad16a142a3ed
[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" "4cfed12d7b47a6616a54ec7a4d100bb49120c5638237aa594698ad16a142a3ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4cfed12d7b47a6616a54ec7a4d100bb49120c5638237aa594698ad16a142a3ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cfed12d7b47a6616a54ec7a4d100bb49120c5638237aa594698ad16a142a3ed", kill_on_drop: false }`
[INFO] [stdout] 4cfed12d7b47a6616a54ec7a4d100bb49120c5638237aa594698ad16a142a3ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b70181794faff4fbf1c805fd7ff544ea8b84c2abe2957be31c72a3690484f64d
[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" "b70181794faff4fbf1c805fd7ff544ea8b84c2abe2957be31c72a3690484f64d", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitset-core v0.1.1
[INFO] [stderr]    Compiling paste v1.0.2
[INFO] [stderr]    Compiling entity_component v0.99.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: `core::num::<impl usize>::saturating_pow` is not yet stable as a const fn
[INFO] [stdout]   --> src/bitset.rs:15:39
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub(crate) const BITSET_SIZE: usize = 2usize.saturating_pow(BITSET_EXP);
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `entity_component`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "b70181794faff4fbf1c805fd7ff544ea8b84c2abe2957be31c72a3690484f64d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b70181794faff4fbf1c805fd7ff544ea8b84c2abe2957be31c72a3690484f64d", kill_on_drop: false }`
[INFO] [stdout] b70181794faff4fbf1c805fd7ff544ea8b84c2abe2957be31c72a3690484f64d