[INFO] fetching crate couch_rs 0.8.37...
[INFO] testing couch_rs-0.8.37 against 1.60.0 for beta-1.61-1
[INFO] extracting crate couch_rs 0.8.37 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate couch_rs 0.8.37 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate couch_rs 0.8.37
[INFO] finished tweaking crates.io crate couch_rs 0.8.37
[INFO] tweaked toml for crates.io crate couch_rs 0.8.37 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate crates.io crate couch_rs 0.8.37 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded couch_rs_derive v0.8.37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ceacc3a73dbb3a09e32b15a141b882aca6fb49935405409225533da3b90cd2c7
[INFO] running `Command { std: "docker" "start" "-a" "ceacc3a73dbb3a09e32b15a141b882aca6fb49935405409225533da3b90cd2c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ceacc3a73dbb3a09e32b15a141b882aca6fb49935405409225533da3b90cd2c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ceacc3a73dbb3a09e32b15a141b882aca6fb49935405409225533da3b90cd2c7", kill_on_drop: false }`
[INFO] [stdout] ceacc3a73dbb3a09e32b15a141b882aca6fb49935405409225533da3b90cd2c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98f106b726ec038d4953c863d446d03f49d65ff03c4f729982cbe700b93b4104
[INFO] running `Command { std: "docker" "start" "-a" "98f106b726ec038d4953c863d446d03f49d65ff03c4f729982cbe700b93b4104", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling quote v1.0.16
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling mio v0.8.2
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling flate2 v1.0.22
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling couch_rs_derive v0.8.37
[INFO] [stderr]    Compiling tokio v1.17.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling tokio-util v0.6.9
[INFO] [stderr]    Compiling tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling async-compression v0.3.12
[INFO] [stderr]    Compiling tokio-util v0.7.0
[INFO] [stderr]    Compiling tokio-stream v0.1.8
[INFO] [stderr]    Compiling h2 v0.3.12
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling hyper v0.14.18
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.10
[INFO] [stderr]    Compiling couch_rs v0.8.37 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.14s
[INFO] running `Command { std: "docker" "inspect" "98f106b726ec038d4953c863d446d03f49d65ff03c4f729982cbe700b93b4104", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98f106b726ec038d4953c863d446d03f49d65ff03c4f729982cbe700b93b4104", kill_on_drop: false }`
[INFO] [stdout] 98f106b726ec038d4953c863d446d03f49d65ff03c4f729982cbe700b93b4104
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 949cd279d0c93b1c4b93e59df337801076d52adaacfe073c3c1c1c0bb0d01059
[INFO] running `Command { std: "docker" "start" "-a" "949cd279d0c93b1c4b93e59df337801076d52adaacfe073c3c1c1c0bb0d01059", kill_on_drop: false }`
[INFO] [stderr]    Compiling couch_rs v0.8.37 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `couch_rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name couch_rs --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="couch_rs_derive"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="native-tls"' -C metadata=861de3f46a12a648 -C extra-filename=-861de3f46a12a648 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern base64=/opt/rustwide/target/debug/deps/libbase64-4c997255cfee02b8.rlib --extern bytes=/opt/rustwide/target/debug/deps/libbytes-59116c3d90e42d31.rlib --extern couch_rs_derive=/opt/rustwide/target/debug/deps/libcouch_rs_derive-b38188a43371a353.so --extern futures_core=/opt/rustwide/target/debug/deps/libfutures_core-9477985257ead09c.rlib --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-edff35a9fb5e4c71.rlib --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-e3fc96b29b14c7fc.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-5de583aeafe41a41.rlib --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-8620503807948996.rlib --extern tokio=/opt/rustwide/target/debug/deps/libtokio-76fa25796121a402.rlib --extern tokio_stream=/opt/rustwide/target/debug/deps/libtokio_stream-169e824568e1b485.rlib --extern tokio_util=/opt/rustwide/target/debug/deps/libtokio_util-53aa137eba31a6a4.rlib --extern url=/opt/rustwide/target/debug/deps/liburl-e641032224f81586.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "949cd279d0c93b1c4b93e59df337801076d52adaacfe073c3c1c1c0bb0d01059", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "949cd279d0c93b1c4b93e59df337801076d52adaacfe073c3c1c1c0bb0d01059", kill_on_drop: false }`
[INFO] [stdout] 949cd279d0c93b1c4b93e59df337801076d52adaacfe073c3c1c1c0bb0d01059