[INFO] fetching crate mextk-sys 0.1.0...
[INFO] testing mextk-sys-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate mextk-sys 0.1.0 into /workspace/builds/worker-90/source
[INFO] validating manifest of crates.io crate mextk-sys 0.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mextk-sys 0.1.0
[INFO] finished tweaking crates.io crate mextk-sys 0.1.0
[INFO] tweaked toml for crates.io crate mextk-sys 0.1.0 written to /workspace/builds/worker-90/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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 mextk-libc v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f060d9179cea002e227d94f5be464b0f3380d617a2e4b99d430e85879b2e3b29
[INFO] running `Command { std: "docker" "start" "-a" "f060d9179cea002e227d94f5be464b0f3380d617a2e4b99d430e85879b2e3b29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f060d9179cea002e227d94f5be464b0f3380d617a2e4b99d430e85879b2e3b29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f060d9179cea002e227d94f5be464b0f3380d617a2e4b99d430e85879b2e3b29", kill_on_drop: false }`
[INFO] [stdout] f060d9179cea002e227d94f5be464b0f3380d617a2e4b99d430e85879b2e3b29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 507ad8e8331818544cfa51eb8a7743c397fd78473f7b76f1006b455a1a91b391
[INFO] running `Command { std: "docker" "start" "-a" "507ad8e8331818544cfa51eb8a7743c397fd78473f7b76f1006b455a1a91b391", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mextk-libc v0.1.0
[INFO] [stderr]    Compiling mextk-sys v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.55s
[INFO] running `Command { std: "docker" "inspect" "507ad8e8331818544cfa51eb8a7743c397fd78473f7b76f1006b455a1a91b391", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "507ad8e8331818544cfa51eb8a7743c397fd78473f7b76f1006b455a1a91b391", kill_on_drop: false }`
[INFO] [stdout] 507ad8e8331818544cfa51eb8a7743c397fd78473f7b76f1006b455a1a91b391
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a7cfa0adc184a3db2c154845c4c11feb1fb13bab559649ff7a2682b29a5055c
[INFO] running `Command { std: "docker" "start" "-a" "0a7cfa0adc184a3db2c154845c4c11feb1fb13bab559649ff7a2682b29a5055c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mextk-sys v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `mextk-sys`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name mextk_sys --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test -C metadata=200aa10bb762d6d9 -C extra-filename=-200aa10bb762d6d9 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern mextk_libc=/opt/rustwide/target/debug/deps/libmextk_libc-712c29740d78f3e7.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "0a7cfa0adc184a3db2c154845c4c11feb1fb13bab559649ff7a2682b29a5055c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a7cfa0adc184a3db2c154845c4c11feb1fb13bab559649ff7a2682b29a5055c", kill_on_drop: false }`
[INFO] [stdout] 0a7cfa0adc184a3db2c154845c4c11feb1fb13bab559649ff7a2682b29a5055c