[INFO] cloning repository https://github.com/stevenpack/learnnet
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stevenpack/learnnet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevenpack%2Flearnnet"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevenpack%2Flearnnet'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ff61a30bae7a50d1dd58226d4f50a43f39244a15
[INFO] checking stevenpack/learnnet against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevenpack%2Flearnnet" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/stevenpack/learnnet on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/stevenpack/learnnet
[INFO] finished tweaking git repo https://github.com/stevenpack/learnnet
[INFO] tweaked toml for git repo https://github.com/stevenpack/learnnet written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/stevenpack/learnnet already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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" "+45d050cde277b22a755847338f2acc2c7b834141" "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] 5ca5be35031d408ac46c67049a1a48c71d8715fae40da1fb2f4786090b3f0917
[INFO] running `"docker" "start" "-a" "5ca5be35031d408ac46c67049a1a48c71d8715fae40da1fb2f4786090b3f0917"`
[INFO] [stderr]     Checking libc v0.2.31
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]    Compiling cc v1.0.1
[INFO] [stderr]    Compiling scopeguard v0.3.2
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling either v1.2.0
[INFO] [stderr]    Compiling lazy_static v0.2.9
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]    Compiling futures v0.1.16
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking serde v1.0.15
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]     Checking percent-encoding v1.0.0
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]    Compiling yansi v0.3.4
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking lazycell v0.5.1
[INFO] [stderr]    Compiling siphasher v0.2.2
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking httparse v1.2.3
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]    Compiling openssl v0.9.20
[INFO] [stderr]    Compiling typenum v1.9.0
[INFO] [stderr] error[E0635]: unknown feature `const_atomic_bool_new`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/yansi-0.3.4/src/lib.rs:1:40
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![cfg_attr(feature="nightly", feature(const_atomic_bool_new))]
[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 E0635`.
[INFO] [stderr] error: could not compile `yansi`.
[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" "5ca5be35031d408ac46c67049a1a48c71d8715fae40da1fb2f4786090b3f0917"`
[INFO] running `"docker" "rm" "-f" "5ca5be35031d408ac46c67049a1a48c71d8715fae40da1fb2f4786090b3f0917"`
[INFO] [stdout] 5ca5be35031d408ac46c67049a1a48c71d8715fae40da1fb2f4786090b3f0917