[INFO] fetching crate horned-owl 0.8.0...
[INFO] checking horned-owl-0.8.0 against beta for pr-78714
[INFO] extracting crate horned-owl 0.8.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate horned-owl 0.8.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate horned-owl 0.8.0
[INFO] finished tweaking crates.io crate horned-owl 0.8.0
[INFO] tweaked toml for crates.io crate horned-owl 0.8.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate horned-owl 0.8.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 805a3afb184554b90ab7835148759d5ede7f2887a7eb6c25876be53d0e91b31f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "805a3afb184554b90ab7835148759d5ede7f2887a7eb6c25876be53d0e91b31f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "805a3afb184554b90ab7835148759d5ede7f2887a7eb6c25876be53d0e91b31f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "805a3afb184554b90ab7835148759d5ede7f2887a7eb6c25876be53d0e91b31f", kill_on_drop: false }`
[INFO] [stdout] 805a3afb184554b90ab7835148759d5ede7f2887a7eb6c25876be53d0e91b31f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ed5552107a5585bd38bef5482fff4818ba8fc2a4577754be4590eb539e0d77a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7ed5552107a5585bd38bef5482fff4818ba8fc2a4577754be4590eb539e0d77a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]     Checking mownstr v0.1.1
[INFO] [stderr]     Checking rio_api v0.4.2
[INFO] [stderr]     Checking resiter v0.4.0
[INFO] [stderr]     Checking weak-table v0.3.0
[INFO] [stderr]     Checking curie v0.0.8
[INFO] [stderr]     Checking slurp v1.0.1
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]     Checking enum_meta v0.6.0
[INFO] [stderr]     Checking aho-corasick v0.7.8
[INFO] [stderr]     Checking quick-xml v0.18.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking backtrace v0.3.44
[INFO] [stderr]     Checking rio_turtle v0.4.2
[INFO] [stderr]     Checking rio_xml v0.4.2
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking uuid v0.1.18
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking mktemp v0.3.1
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking quick-xml v0.12.4
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking sophia_iri v0.6.1
[INFO] [stderr]     Checking sophia_api v0.6.1
[INFO] [stderr]     Checking sophia_term v0.6.1
[INFO] [stderr]     Checking sophia v0.6.1
[INFO] [stderr]     Checking horned-owl v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `is_subclass` found for struct `horned_owl::ontology::set::SetOntology` in the current scope
[INFO] [stdout]   --> benches/horned.rs:88:20
[INFO] [stdout]    |
[INFO] [stdout] 88 |         assert!(!o.is_subclass(&d, &c));
[INFO] [stdout]    |                    ^^^^^^^^^^^ method not found in `horned_owl::ontology::set::SetOntology`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `is_subclass` found for struct `horned_owl::ontology::set::SetOntology` in the current scope
[INFO] [stdout]   --> benches/horned.rs:89:19
[INFO] [stdout]    |
[INFO] [stdout] 89 |         assert!(o.is_subclass(&c, &d));
[INFO] [stdout]    |                   ^^^^^^^^^^^ method not found in `horned_owl::ontology::set::SetOntology`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `horned-owl`
[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 `Command { std: "docker" "inspect" "7ed5552107a5585bd38bef5482fff4818ba8fc2a4577754be4590eb539e0d77a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ed5552107a5585bd38bef5482fff4818ba8fc2a4577754be4590eb539e0d77a", kill_on_drop: false }`
[INFO] [stdout] 7ed5552107a5585bd38bef5482fff4818ba8fc2a4577754be4590eb539e0d77a