[INFO] crate rusoto_ec2 0.40.0 is already in cache
[INFO] extracting crate rusoto_ec2 0.40.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/rusoto_ec2/0.40.0
[INFO] extracting crate rusoto_ec2 0.40.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rusoto_ec2/0.40.0
[INFO] validating manifest of rusoto_ec2-0.40.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rusoto_ec2-0.40.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rusoto_ec2-0.40.0
[INFO] finished frobbing rusoto_ec2-0.40.0
[INFO] frobbed toml for rusoto_ec2-0.40.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/rusoto_ec2/0.40.0/Cargo.toml
[INFO] started frobbing rusoto_ec2-0.40.0
[INFO] finished frobbing rusoto_ec2-0.40.0
[INFO] frobbed toml for rusoto_ec2-0.40.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rusoto_ec2/0.40.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing rusoto_ec2-0.40.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rusoto_ec2/0.40.0:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 47626d7be4aba19e780cb4349538cdc3e59a2e3684db764c0520870c7d1cc048
[INFO] running `"docker" "start" "-a" "47626d7be4aba19e780cb4349538cdc3e59a2e3684db764c0520870c7d1cc048"`
[INFO] [stderr]    Compiling rusoto_ec2 v0.40.0 (/opt/crater/workdir)
[INFO] [stderr] error: Could not compile `rusoto_ec2`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --edition=2018 --crate-name rusoto_ec2 src/lib.rs --color never --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="native-tls"' -C metadata=bd2b4bf1fd136346 -C extra-filename=-bd2b4bf1fd136346 --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern bytes=/opt/crater/target/debug/deps/libbytes-a094dc9fa3ca383e.rmeta --extern futures=/opt/crater/target/debug/deps/libfutures-f60afb80ba7dd5f9.rmeta --extern rusoto_core=/opt/crater/target/debug/deps/librusoto_core-ade1f18a24e51cd8.rmeta --extern serde_urlencoded=/opt/crater/target/debug/deps/libserde_urlencoded-0d8de6462314691c.rmeta --extern xml=/opt/crater/target/debug/deps/libxml-ea0e8eefc16e6b83.rmeta --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `"docker" "inspect" "47626d7be4aba19e780cb4349538cdc3e59a2e3684db764c0520870c7d1cc048"`
[INFO] running `"docker" "rm" "-f" "47626d7be4aba19e780cb4349538cdc3e59a2e3684db764c0520870c7d1cc048"`
[INFO] [stdout] 47626d7be4aba19e780cb4349538cdc3e59a2e3684db764c0520870c7d1cc048