[INFO] crate buildkit-frontend 0.3.0 is already in cache
[INFO] testing buildkit-frontend-0.3.0 against 1.44.0 for beta-1.45-1
[INFO] extracting crate buildkit-frontend 0.3.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate buildkit-frontend 0.3.0 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 buildkit-frontend 0.3.0
[INFO] finished tweaking crates.io crate buildkit-frontend 0.3.0
[INFO] tweaked toml for crates.io crate buildkit-frontend 0.3.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate buildkit-frontend 0.3.0 already has a lockfile, it will not be regenerated
[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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] f86b3cbb1489ff78f0dbbe8c6e0efaf3a927626751598e0953c44134de83f684
[INFO] running `"docker" "start" "-a" "f86b3cbb1489ff78f0dbbe8c6e0efaf3a927626751598e0953c44134de83f684"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling futures-core v0.3.4
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling tower-service v0.3.0
[INFO] [stderr]    Compiling pin-project-lite v0.1.4
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]    Compiling futures-sink v0.3.4
[INFO] [stderr]    Compiling futures-task v0.3.4
[INFO] [stderr]    Compiling futures-io v0.3.4
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling anyhow v1.0.26
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling tower-layer v0.3.0
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling multimap v0.8.0
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling try-lock v0.2.2
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling regex-syntax v0.6.16
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling tracing-core v0.1.10
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling http v0.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.33
[INFO] [stderr]    Compiling futures-channel v0.3.4
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling aho-corasick v0.7.9
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling num_cpus v1.12.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling which v3.1.0
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling petgraph v0.5.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling mio v0.6.21
[INFO] [stderr]    Compiling backtrace v0.3.45
[INFO] [stderr]    Compiling prost-build v0.6.1
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling sha2 v0.8.1
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling regex v1.3.4
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.7
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]    Compiling async-trait v0.1.24
[INFO] [stderr]    Compiling tokio v0.2.13
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]    Compiling async-stream v0.2.1
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling tracing v0.1.13
[INFO] [stderr]    Compiling pin-project v0.4.8
[INFO] [stderr]    Compiling tower-discover v0.3.0
[INFO] [stderr]    Compiling tower-load-shed v0.3.0
[INFO] [stderr]    Compiling tracing-futures v0.2.3
[INFO] [stderr]    Compiling prost v0.6.1
[INFO] [stderr]    Compiling futures-util v0.3.4
[INFO] [stderr]    Compiling prost-types v0.6.1
[INFO] [stderr]    Compiling tokio-util v0.2.0
[INFO] [stderr]    Compiling tower-timeout v0.3.0
[INFO] [stderr]    Compiling tower-load v0.3.0
[INFO] [stderr]    Compiling tower-make v0.3.0
[INFO] [stderr]    Compiling tower-limit v0.3.0
[INFO] [stderr]    Compiling tower-buffer v0.3.0
[INFO] [stderr]    Compiling tower-retry v0.3.0
[INFO] [stderr]    Compiling tonic-build v0.1.1
[INFO] [stderr]    Compiling tower-util v0.3.0
[INFO] [stderr]    Compiling tower-ready-cache v0.3.1
[INFO] [stderr]    Compiling h2 v0.2.2
[INFO] [stderr]    Compiling futures-executor v0.3.4
[INFO] [stderr]    Compiling tower-balance v0.3.0
[INFO] [stderr]    Compiling futures v0.3.4
[INFO] [stderr]    Compiling tower v0.3.1
[INFO] [stderr]    Compiling buildkit-proto v0.2.0
[INFO] [stderr]    Compiling hyper v0.13.3
[INFO] [stderr]    Compiling tonic v0.1.1
[INFO] [stderr]    Compiling serde_json v1.0.48
[INFO] [stderr]    Compiling chrono v0.4.10
[INFO] [stderr]    Compiling buildkit-llb v0.2.0
[INFO] [stderr]    Compiling buildkit-frontend v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 44s
[INFO] running `"docker" "inspect" "f86b3cbb1489ff78f0dbbe8c6e0efaf3a927626751598e0953c44134de83f684"`
[INFO] running `"docker" "rm" "-f" "f86b3cbb1489ff78f0dbbe8c6e0efaf3a927626751598e0953c44134de83f684"`
[INFO] [stdout] f86b3cbb1489ff78f0dbbe8c6e0efaf3a927626751598e0953c44134de83f684
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 218d2c9e316cb966860324918506478f5c2b02c6c739b7367b40e149b1d5a169
[INFO] running `"docker" "start" "-a" "218d2c9e316cb966860324918506478f5c2b02c6c739b7367b40e149b1d5a169"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.12
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling pretty_assertions v0.6.1
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling url v2.1.1
[INFO] [stderr]    Compiling buildkit-frontend v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `buildkit-frontend`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name ssh_mount --edition=2018 examples/ssh-mount.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C debuginfo=2 -C metadata=f96facb7fd1807e4 -C extra-filename=-f96facb7fd1807e4 --out-dir /opt/rustwide/target/debug/examples -L dependency=/opt/rustwide/target/debug/deps --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-9c4455e1d76e3332.so --extern buildkit_frontend=/opt/rustwide/target/debug/deps/libbuildkit_frontend-e6c3d4fd7fbde776.rlib --extern buildkit_llb=/opt/rustwide/target/debug/deps/libbuildkit_llb-8c7953f7709aef8d.rlib --extern buildkit_proto=/opt/rustwide/target/debug/deps/libbuildkit_proto-69a30e173bdd264b.rlib --extern bytes=/opt/rustwide/target/debug/deps/libbytes-fa58d22be861d894.rlib --extern chrono=/opt/rustwide/target/debug/deps/libchrono-541ba8583512ada9.rlib --extern either=/opt/rustwide/target/debug/deps/libeither-19da0396cea95667.rlib --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-f3ee18287e1180ce.rlib --extern failure=/opt/rustwide/target/debug/deps/libfailure-cbb52001583d7863.rlib --extern futures=/opt/rustwide/target/debug/deps/libfutures-a8f633deabb6a587.rlib --extern libc=/opt/rustwide/target/debug/deps/liblibc-a4e27cfb38cdeb17.rlib --extern log=/opt/rustwide/target/debug/deps/liblog-7d3993e8061c37ae.rlib --extern mio=/opt/rustwide/target/debug/deps/libmio-f23d0de5815a3d05.rlib --extern pin_project=/opt/rustwide/target/debug/deps/libpin_project-6d43052b584a3c9f.rlib --extern pretty_assertions=/opt/rustwide/target/debug/deps/libpretty_assertions-5eeab04e629c67f7.rlib --extern regex=/opt/rustwide/target/debug/deps/libregex-2c5f3c2178672246.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-6830a42f8bcd7984.rlib --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-f5e64ff1a8fe92a3.rlib --extern tokio=/opt/rustwide/target/debug/deps/libtokio-535d1602c445bbbf.rlib --extern tonic=/opt/rustwide/target/debug/deps/libtonic-c2b5cd8a471f3cc7.rlib --extern tower=/opt/rustwide/target/debug/deps/libtower-a4208acfae13595d.rlib --extern url=/opt/rustwide/target/debug/deps/liburl-2a82f50d1dde2f97.rlib --cap-lints=warn -L native=/opt/rustwide/target/debug/build/backtrace-sys-c8aef8db123e10ca/out` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `buildkit-frontend`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name buildkit_frontend --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --emit=dep-info,link -C debuginfo=2 --test -C metadata=a02e0abe09b032d3 -C extra-filename=-a02e0abe09b032d3 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-9c4455e1d76e3332.so --extern buildkit_llb=/opt/rustwide/target/debug/deps/libbuildkit_llb-8c7953f7709aef8d.rlib --extern buildkit_proto=/opt/rustwide/target/debug/deps/libbuildkit_proto-69a30e173bdd264b.rlib --extern bytes=/opt/rustwide/target/debug/deps/libbytes-fa58d22be861d894.rlib --extern chrono=/opt/rustwide/target/debug/deps/libchrono-541ba8583512ada9.rlib --extern either=/opt/rustwide/target/debug/deps/libeither-19da0396cea95667.rlib --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-f3ee18287e1180ce.rlib --extern failure=/opt/rustwide/target/debug/deps/libfailure-cbb52001583d7863.rlib --extern futures=/opt/rustwide/target/debug/deps/libfutures-a8f633deabb6a587.rlib --extern libc=/opt/rustwide/target/debug/deps/liblibc-a4e27cfb38cdeb17.rlib --extern log=/opt/rustwide/target/debug/deps/liblog-7d3993e8061c37ae.rlib --extern mio=/opt/rustwide/target/debug/deps/libmio-f23d0de5815a3d05.rlib --extern pin_project=/opt/rustwide/target/debug/deps/libpin_project-6d43052b584a3c9f.rlib --extern pretty_assertions=/opt/rustwide/target/debug/deps/libpretty_assertions-5eeab04e629c67f7.rlib --extern regex=/opt/rustwide/target/debug/deps/libregex-2c5f3c2178672246.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-6830a42f8bcd7984.rlib --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-f5e64ff1a8fe92a3.rlib --extern tokio=/opt/rustwide/target/debug/deps/libtokio-535d1602c445bbbf.rlib --extern tonic=/opt/rustwide/target/debug/deps/libtonic-c2b5cd8a471f3cc7.rlib --extern tower=/opt/rustwide/target/debug/deps/libtower-a4208acfae13595d.rlib --extern url=/opt/rustwide/target/debug/deps/liburl-2a82f50d1dde2f97.rlib --cap-lints=warn -L native=/opt/rustwide/target/debug/build/backtrace-sys-c8aef8db123e10ca/out` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "218d2c9e316cb966860324918506478f5c2b02c6c739b7367b40e149b1d5a169"`
[INFO] running `"docker" "rm" "-f" "218d2c9e316cb966860324918506478f5c2b02c6c739b7367b40e149b1d5a169"`
[INFO] [stdout] 218d2c9e316cb966860324918506478f5c2b02c6c739b7367b40e149b1d5a169