[INFO] crate std_detect 0.1.5 is already in cache
[INFO] testing std_detect-0.1.5 against 1.44.0 for beta-1.45-1
[INFO] extracting crate std_detect 0.1.5 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate std_detect 0.1.5 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 std_detect 0.1.5
[INFO] finished tweaking crates.io crate std_detect 0.1.5
[INFO] tweaked toml for crates.io crate std_detect 0.1.5 written to /workspace/builds/worker-2/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] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] b3bdb0f54cb0b2c9f6aa8794ee96e7b7567ee62ff7f76052393a98528007d3d9
[INFO] running `"docker" "start" "-a" "b3bdb0f54cb0b2c9f6aa8794ee96e7b7567ee62ff7f76052393a98528007d3d9"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling std_detect v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | #![feature(const_fn, staged_api, stdsimd, doc_cfg, allow_internal_unstable)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:18:34
[INFO] [stderr]    |
[INFO] [stderr] 18 | #![cfg_attr(target_os = "linux", feature(linkage))]
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0545]: `issue` must be a non-zero numeric string or "none"
[INFO] [stderr]    --> src/detect/arch/x86.rs:251:42
[INFO] [stderr]     |
[INFO] [stderr] 251 | #[unstable(feature = "stdsimd_internal", issue = "0")]
[INFO] [stderr]     |                                          ^^^^^^^^---
[INFO] [stderr]     |                                                  |
[INFO] [stderr]     |                                                  `issue` must not be "0", use "none" instead
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `std_detect`.
[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: build failed
[INFO] running `"docker" "inspect" "b3bdb0f54cb0b2c9f6aa8794ee96e7b7567ee62ff7f76052393a98528007d3d9"`
[INFO] running `"docker" "rm" "-f" "b3bdb0f54cb0b2c9f6aa8794ee96e7b7567ee62ff7f76052393a98528007d3d9"`
[INFO] [stdout] b3bdb0f54cb0b2c9f6aa8794ee96e7b7567ee62ff7f76052393a98528007d3d9