[INFO] updating cached repository https://github.com/katharostech/amethyst-ecs-benchmarks
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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] 8c718d53eb8e39c1c19254b64742331ed4e033ca
[INFO] testing katharostech/amethyst-ecs-benchmarks against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkatharostech%2Famethyst-ecs-benchmarks" "work/builds/worker-3/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/katharostech/amethyst-ecs-benchmarks on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/katharostech/amethyst-ecs-benchmarks
[INFO] finished tweaking git repo https://github.com/katharostech/amethyst-ecs-benchmarks
[INFO] tweaked toml for git repo https://github.com/katharostech/amethyst-ecs-benchmarks written to work/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/katharostech/amethyst-ecs-benchmarks already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 3a7d6453e35e9044d1804c6ac828aa23b35f65adbd7ec18d2137c9178e621d2c
[INFO] running `"docker" "start" "-a" "3a7d6453e35e9044d1804c6ac828aa23b35f65adbd7ec18d2137c9178e621d2c"`
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling names v0.11.0
[INFO] [stderr]    Compiling easy_ffi v0.1.0
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling criterion-plot v0.3.1
[INFO] [stderr]    Compiling rand_xoshiro v0.1.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling hibitset v0.6.2
[INFO] [stderr]    Compiling backtrace v0.3.34
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling csv-core v0.1.6
[INFO] [stderr]    Compiling amethyst_error v0.2.0 (https://github.com/amethyst/amethyst#af3bf68a)
[INFO] [stderr]    Compiling regex v1.2.1
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling quickcheck v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.98
[INFO] [stderr]    Compiling shred-derive v0.6.1
[INFO] [stderr]    Compiling derivative v1.0.2
[INFO] [stderr]    Compiling alga_derive v0.9.1
[INFO] [stderr]    Compiling getset v0.0.7
[INFO] [stderr]    Compiling derive-new v0.5.7
[INFO] [stderr]    Compiling shred v0.9.2
[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/shred-0.9.2/src/lib.rs:54:34
[INFO] [stderr]    |
[INFO] [stderr] 54 | #![cfg_attr(feature = "nightly", 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 `shred`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "3a7d6453e35e9044d1804c6ac828aa23b35f65adbd7ec18d2137c9178e621d2c"`
[INFO] running `"docker" "rm" "-f" "3a7d6453e35e9044d1804c6ac828aa23b35f65adbd7ec18d2137c9178e621d2c"`
[INFO] [stdout] 3a7d6453e35e9044d1804c6ac828aa23b35f65adbd7ec18d2137c9178e621d2c