[INFO] fetching crate mepple 0.2.0...
[INFO] testing mepple-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate mepple 0.2.0 into /workspace/builds/worker-23/source
[INFO] validating manifest of crates.io crate mepple 0.2.0 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 mepple 0.2.0
[INFO] finished tweaking crates.io crate mepple 0.2.0
[INFO] tweaked toml for crates.io crate mepple 0.2.0 written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sqlite3-sys v0.12.0
[INFO] [stderr]   Downloaded sqlite v0.25.3
[INFO] [stderr]   Downloaded sqlite3-src v0.2.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 63946ffb1e00afcb3d3da85bd94b5fc3ca214e7458cc06b53788fab8f6bc6cb5
[INFO] running `Command { std: "docker" "start" "-a" "63946ffb1e00afcb3d3da85bd94b5fc3ca214e7458cc06b53788fab8f6bc6cb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63946ffb1e00afcb3d3da85bd94b5fc3ca214e7458cc06b53788fab8f6bc6cb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63946ffb1e00afcb3d3da85bd94b5fc3ca214e7458cc06b53788fab8f6bc6cb5", kill_on_drop: false }`
[INFO] [stdout] 63946ffb1e00afcb3d3da85bd94b5fc3ca214e7458cc06b53788fab8f6bc6cb5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 363ebbb5288c891446c1a5a9a308282bbc22e903a5145d93c22ae4429d6c33a1
[INFO] running `Command { std: "docker" "start" "-a" "363ebbb5288c891446c1a5a9a308282bbc22e903a5145d93c22ae4429d6c33a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling mepple v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `mepple`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name mepple --edition=2018 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 -C metadata=9600239b04fe1c6f -C extra-filename=-9600239b04fe1c6f --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-df981c5871754530.rmeta --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "363ebbb5288c891446c1a5a9a308282bbc22e903a5145d93c22ae4429d6c33a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "363ebbb5288c891446c1a5a9a308282bbc22e903a5145d93c22ae4429d6c33a1", kill_on_drop: false }`
[INFO] [stdout] 363ebbb5288c891446c1a5a9a308282bbc22e903a5145d93c22ae4429d6c33a1