[INFO] fetching crate hwt 0.4.2...
[INFO] testing hwt-0.4.2 against 1.44.0 for beta-1.45-1
[INFO] extracting crate hwt 0.4.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate hwt 0.4.2 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate hwt 0.4.2
[INFO] finished tweaking crates.io crate hwt 0.4.2
[INFO] tweaked toml for crates.io crate hwt 0.4.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: file found to be present in multiple build targets: /workspace/builds/worker-8/source/examples/benches.rs
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4060e1903f5cb4a0604637289e5588dd341eb3e9629883b1b5f5ec1e70397675
[INFO] running `"docker" "start" "-a" "4060e1903f5cb4a0604637289e5588dd341eb3e9629883b1b5f5ec1e70397675"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/rustwide/workdir/examples/benches.rs
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling packed_simd v0.3.3
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling likely v0.1.0
[INFO] [stderr]    Compiling hashbrown v0.2.2
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]    Compiling const-random v0.1.8
[INFO] [stderr]    Compiling ahash v0.1.20
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ahash-0.1.20/src/lib.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | #![feature(core_intrinsics)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `ahash`.
[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] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/packed_simd-0.3.3/src/lib.rs:202:1
[INFO] [stderr]     |
[INFO] [stderr] 202 | / #![feature(
[INFO] [stderr] 203 | |     repr_simd,
[INFO] [stderr] 204 | |     const_fn,
[INFO] [stderr] 205 | |     platform_intrinsics,
[INFO] [stderr] ...   |
[INFO] [stderr] 215 | |     custom_inner_attributes
[INFO] [stderr] 216 | | )]
[INFO] [stderr]     | |__^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `packed_simd`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4060e1903f5cb4a0604637289e5588dd341eb3e9629883b1b5f5ec1e70397675"`
[INFO] running `"docker" "rm" "-f" "4060e1903f5cb4a0604637289e5588dd341eb3e9629883b1b5f5ec1e70397675"`
[INFO] [stdout] 4060e1903f5cb4a0604637289e5588dd341eb3e9629883b1b5f5ec1e70397675