[INFO] fetching crate chema 0.0.9...
[INFO] testing chema-0.0.9 against 1.55.0 for beta-1.56-1
[INFO] extracting crate chema 0.0.9 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate chema 0.0.9 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 chema 0.0.9
[INFO] finished tweaking crates.io crate chema 0.0.9
[INFO] tweaked toml for crates.io crate chema 0.0.9 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate chema 0.0.9 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 3beeb46b1273cf5790948ba096570be92407759b0ad4e8c71558307b6c4a88c6
[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" "3beeb46b1273cf5790948ba096570be92407759b0ad4e8c71558307b6c4a88c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3beeb46b1273cf5790948ba096570be92407759b0ad4e8c71558307b6c4a88c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3beeb46b1273cf5790948ba096570be92407759b0ad4e8c71558307b6c4a88c6", kill_on_drop: false }`
[INFO] [stdout] 3beeb46b1273cf5790948ba096570be92407759b0ad4e8c71558307b6c4a88c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f594b140d9b2b628a63654686ea3707c1f50ec54de664326ae900107d103db2f
[INFO] running `Command { std: "docker" "start" "-a" "f594b140d9b2b628a63654686ea3707c1f50ec54de664326ae900107d103db2f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]    Compiling linked-hash-map v0.5.3
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling pin-project-lite v0.1.11
[INFO] [stderr]    Compiling dtoa v0.4.6
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling combine v4.3.2
[INFO] [stderr]    Compiling yaml-rust v0.4.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling serde_yaml v0.8.14
[INFO] [stderr]    Compiling chema v0.0.9 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `chema`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name chema --edition=2018 src/main.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=0e3e6ac47b61a89c -C extra-filename=-0e3e6ac47b61a89c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern combine=/opt/rustwide/target/debug/deps/libcombine-17bf2a083ef5e1ea.rlib --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-7a188fa0acc55ba1.rlib --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-df981c5871754530.rlib --extern log=/opt/rustwide/target/debug/deps/liblog-5bfb20592c7a6792.rlib --extern regex=/opt/rustwide/target/debug/deps/libregex-d08c389ebc7dd978.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-4018e7ae6c825f8c.rlib --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-243295651237ec62.rlib --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-189943a935cb3599.rlib --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-191a151b24d69a48.rlib --extern structopt_derive=/opt/rustwide/target/debug/deps/libstructopt_derive-3a232db18e7fce3b.so --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "f594b140d9b2b628a63654686ea3707c1f50ec54de664326ae900107d103db2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f594b140d9b2b628a63654686ea3707c1f50ec54de664326ae900107d103db2f", kill_on_drop: false }`
[INFO] [stdout] f594b140d9b2b628a63654686ea3707c1f50ec54de664326ae900107d103db2f