[INFO] crate keel 0.0.1 is already in cache
[INFO] extracting crate keel 0.0.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/keel/0.0.1
[INFO] extracting crate keel 0.0.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/keel/0.0.1
[INFO] validating manifest of keel-0.0.1 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of keel-0.0.1 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing keel-0.0.1
[INFO] removed 1 missing examples
[INFO] finished frobbing keel-0.0.1
[INFO] frobbed toml for keel-0.0.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/keel/0.0.1/Cargo.toml
[INFO] started frobbing keel-0.0.1
[INFO] removed 1 missing examples
[INFO] finished frobbing keel-0.0.1
[INFO] frobbed toml for keel-0.0.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/keel/0.0.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing keel-0.0.1 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/keel/0.0.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 072999de8a9732ab518fa24bf670219765411c5abde9538ebe7c78ffe3398e3d
[INFO] running `"docker" "start" "-a" "072999de8a9732ab518fa24bf670219765411c5abde9538ebe7c78ffe3398e3d"`
[INFO] [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]    Compiling k8s-openapi v0.2.0
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr] error: Could not compile `k8s-openapi`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name k8s_openapi /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/k8s-openapi-0.2.0/src/lib.rs --color never --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 --cfg 'feature="v1_11"' -C metadata=fc25061df59f32aa -C extra-filename=-fc25061df59f32aa --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern base64=/opt/crater/target/debug/deps/libbase64-931ff60ca18d83eb.rlib --extern bytes=/opt/crater/target/debug/deps/libbytes-b8d84800b337abb7.rlib --extern chrono=/opt/crater/target/debug/deps/libchrono-b9a8713d2134cf00.rlib --extern http=/opt/crater/target/debug/deps/libhttp-8914bb68364de224.rlib --extern serde=/opt/crater/target/debug/deps/libserde-c55174c1f02a9342.rlib --extern serde_json=/opt/crater/target/debug/deps/libserde_json-86f23295433fb37c.rlib --extern url=/opt/crater/target/debug/deps/liburl-4858f7c80a0a9641.rlib --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `"docker" "inspect" "072999de8a9732ab518fa24bf670219765411c5abde9538ebe7c78ffe3398e3d"`
[INFO] running `"docker" "rm" "-f" "072999de8a9732ab518fa24bf670219765411c5abde9538ebe7c78ffe3398e3d"`
[INFO] [stdout] 072999de8a9732ab518fa24bf670219765411c5abde9538ebe7c78ffe3398e3d