[INFO] fetching crate claws 1.0.0...
[INFO] testing claws-1.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate claws 1.0.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate claws 1.0.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate claws 1.0.0
[INFO] finished tweaking crates.io crate claws 1.0.0
[INFO] tweaked toml for crates.io crate claws 1.0.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate claws 1.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b78be8fe140faf4e25708c0169da07c30f0498931bd4865584bea209a5844dc2
[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" "b78be8fe140faf4e25708c0169da07c30f0498931bd4865584bea209a5844dc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b78be8fe140faf4e25708c0169da07c30f0498931bd4865584bea209a5844dc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b78be8fe140faf4e25708c0169da07c30f0498931bd4865584bea209a5844dc2", kill_on_drop: false }`
[INFO] [stdout] b78be8fe140faf4e25708c0169da07c30f0498931bd4865584bea209a5844dc2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f94fa000cc514367a7c0c81222b15d64739a6270790bb6bcc79fe01199c87b6c
[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" "f94fa000cc514367a7c0c81222b15d64739a6270790bb6bcc79fe01199c87b6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling subtle v1.0.0
[INFO] [stderr]    Compiling md5 v0.7.0
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling rusoto_core v0.42.0
[INFO] [stderr]    Compiling tokio-codec v0.1.2
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling tokio-fs v0.1.7
[INFO] [stderr]    Compiling tokio-signal v0.2.9
[INFO] [stderr]    Compiling crypto-mac v0.7.0
[INFO] [stderr]    Compiling tokio-uds v0.2.7
[INFO] [stderr]    Compiling tokio-udp v0.1.6
[INFO] [stderr]    Compiling tokio-process v0.2.5
[INFO] [stderr]    Compiling hmac v0.7.1
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling hyper v0.12.36
[INFO] [stderr]    Compiling sct v0.6.1
[INFO] [stderr]    Compiling webpki v0.21.4
[INFO] [stderr]    Compiling ct-logs v0.6.0
[INFO] [stderr]    Compiling rustls v0.16.0
[INFO] [stderr]    Compiling webpki-roots v0.17.0
[INFO] [stderr]    Compiling tokio-rustls v0.10.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling hyper-rustls v0.17.1
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]    Compiling fehler-macros v1.0.0
[INFO] [stderr]    Compiling structopt v0.3.23
[INFO] [stderr]    Compiling fehler v1.0.0
[INFO] [stderr]    Compiling rusoto_credential v0.42.0
[INFO] [stderr]    Compiling rusoto_signature v0.42.0
[INFO] [stderr]    Compiling rusoto_logs v0.42.0
[INFO] [stderr]    Compiling rusoto_ec2 v0.42.0
[INFO] [stderr]    Compiling rusoto_s3 v0.42.0
[INFO] [stderr] error: could not compile `rusoto_ec2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name rusoto_ec2 --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusoto_ec2-0.42.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="rustls"' -C metadata=09553b3d5d528ec5 -C extra-filename=-09553b3d5d528ec5 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-73aaaf2d96d7db16.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-1e2976b395eeb9c1.rmeta --extern rusoto_core=/opt/rustwide/target/debug/deps/librusoto_core-6e71aa634592457b.rmeta --extern serde_urlencoded=/opt/rustwide/target/debug/deps/libserde_urlencoded-da3fd5149ef483dc.rmeta --extern xml=/opt/rustwide/target/debug/deps/libxml-2c962774058b1b6f.rmeta --cap-lints allow --cap-lints=warn -L native=/opt/rustwide/target/debug/build/ring-0469882a47fe746a/out` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "f94fa000cc514367a7c0c81222b15d64739a6270790bb6bcc79fe01199c87b6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f94fa000cc514367a7c0c81222b15d64739a6270790bb6bcc79fe01199c87b6c", kill_on_drop: false }`
[INFO] [stdout] f94fa000cc514367a7c0c81222b15d64739a6270790bb6bcc79fe01199c87b6c