[INFO] updating cached repository https://github.com/MatthieuGANNE/matrix_mult
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 54ab15bbc9e0f7fd54fcde3ee1ef6486bc4e2ab6
[INFO] checking MatthieuGANNE/matrix_mult against beta-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMatthieuGANNE%2Fmatrix_mult" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MatthieuGANNE/matrix_mult on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/MatthieuGANNE/matrix_mult
[INFO] finished tweaking git repo https://github.com/MatthieuGANNE/matrix_mult
[INFO] tweaked toml for git repo https://github.com/MatthieuGANNE/matrix_mult written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/MatthieuGANNE/matrix_mult already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=allow" "-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" "+beta-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d7ce672afb6ca037c13356a5250f563cadc519e73dac5c40259935f57c2a070c
[INFO] running `"docker" "start" "-a" "d7ce672afb6ca037c13356a5250f563cadc519e73dac5c40259935f57c2a070c"`
[INFO] [stderr]    Compiling serde v1.0.97
[INFO] [stderr]    Compiling openblas-src v0.6.1
[INFO] [stderr]    Compiling packed_simd v0.3.3
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]    Compiling hwloc v0.5.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking getrandom v0.1.6
[INFO] [stderr]     Checking errno v0.2.4
[INFO] [stderr]     Checking cblas-sys v0.1.4
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]     Checking itertools-num v0.1.3
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking alga v0.9.1
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling serde_derive v1.0.97
[INFO] [stderr]    Compiling derive-divisible v0.1.0 (https://github.com/wagnerf42/derive-divisible?branch=new_api#e3e655f9)
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking blas-src v0.2.1
[INFO] [stderr]     Checking rayon-core v1.5.0
[INFO] [stderr]     Checking crossbeam v0.7.2
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta 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]     Checking nalgebra v0.18.0
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking bstr v0.2.6
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking rayon_logs v0.1.2 (https://github.com/wagnerf42/rayon-logs#f60bfb40)
[INFO] [stderr]     Checking tinytemplate v1.0.2
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stderr]     Checking rayon_adaptive v0.1.0 (https://github.com/wagnerf42/rayon-adaptive.git?branch=new_api#4254a6d4)
[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] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d7ce672afb6ca037c13356a5250f563cadc519e73dac5c40259935f57c2a070c"`
[INFO] running `"docker" "rm" "-f" "d7ce672afb6ca037c13356a5250f563cadc519e73dac5c40259935f57c2a070c"`
[INFO] [stdout] d7ce672afb6ca037c13356a5250f563cadc519e73dac5c40259935f57c2a070c