[INFO] fetching crate rusoto_ec2 0.40.0...
[INFO] extracting crate rusoto_ec2 0.40.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/rusoto_ec2/0.40.0
[INFO] extracting crate rusoto_ec2 0.40.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/rusoto_ec2/0.40.0
[INFO] validating manifest of rusoto_ec2-0.40.0 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 rusoto_ec2-0.40.0 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 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-1.37-6/sources/1.36.0/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-1.37-6/sources/beta-2019-07-23/reg/rusoto_ec2/0.40.0/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] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing rusoto_ec2-0.40.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 62ac0603a2bd2cd3e59e3a21f1f5f2e4ed445277c40d91fdbb718719a99e4601
[INFO] running `"docker" "start" "-a" "62ac0603a2bd2cd3e59e3a21f1f5f2e4ed445277c40d91fdbb718719a99e4601"`
[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"' --cfg 'feature="rusoto_core"' -C metadata=4f7f869f6a499670 -C extra-filename=-4f7f869f6a499670 --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern bytes=/opt/crater/target/debug/deps/libbytes-13fb674f61efa969.rlib --extern futures=/opt/crater/target/debug/deps/libfutures-1b04893c31162bb0.rlib --extern rusoto_core=/opt/crater/target/debug/deps/librusoto_core-22db06056d199b1b.rlib --extern serde_urlencoded=/opt/crater/target/debug/deps/libserde_urlencoded-f40361f2276b479b.rlib --extern xml=/opt/crater/target/debug/deps/libxml-75c0b04fb90cbfe4.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `"docker" "inspect" "62ac0603a2bd2cd3e59e3a21f1f5f2e4ed445277c40d91fdbb718719a99e4601"`
[INFO] running `"docker" "rm" "-f" "62ac0603a2bd2cd3e59e3a21f1f5f2e4ed445277c40d91fdbb718719a99e4601"`
[INFO] [stdout] 62ac0603a2bd2cd3e59e3a21f1f5f2e4ed445277c40d91fdbb718719a99e4601