[INFO] updating cached repository https://github.com/staronj/Automata
[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] 1041669fac14192984c57b12b218ebf3ab9ea50c
[INFO] checking staronj/Automata against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstaronj%2FAutomata" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/staronj/Automata on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/staronj/Automata
[INFO] finished tweaking git repo https://github.com/staronj/Automata
[INFO] tweaked toml for git repo https://github.com/staronj/Automata written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/staronj/Automata already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "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] e8a6647cb2f0e915057fff8f42e7369864d71851f0d6ad19bc13d6e914f6d000
[INFO] running `"docker" "start" "-a" "e8a6647cb2f0e915057fff8f42e7369864d71851f0d6ad19bc13d6e914f6d000"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cl-sys v0.4.1
[INFO] [stderr]     Checking multiset v0.0.4
[INFO] [stderr]     Checking colorify v0.2.3
[INFO] [stderr]     Checking is_sorted v0.1.0
[INFO] [stderr]     Checking superslice v0.1.0
[INFO] [stderr]     Checking qutex v0.2.1
[INFO] [stderr]    Compiling ocl-core v0.10.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking regex v1.0.5
[INFO] [stderr]     Checking ocl-core-vector v0.1.0
[INFO] [stderr] error[E0658]: use of unstable library feature 'is_sorted': new API
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/is_sorted-0.1.0/src/lib.rs:119:31
[INFO] [stderr]     |
[INFO] [stderr] 119 |         self.map(|v| key(&v)).is_sorted()
[INFO] [stderr]     |                               ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/53485
[INFO] [stderr]     = help: add `#![feature(is_sorted)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: could not compile `is_sorted`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e8a6647cb2f0e915057fff8f42e7369864d71851f0d6ad19bc13d6e914f6d000"`
[INFO] running `"docker" "rm" "-f" "e8a6647cb2f0e915057fff8f42e7369864d71851f0d6ad19bc13d6e914f6d000"`
[INFO] [stdout] e8a6647cb2f0e915057fff8f42e7369864d71851f0d6ad19bc13d6e914f6d000