[INFO] fetching crate vex-sys 0.1.0...
[INFO] testing vex-sys-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate vex-sys 0.1.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate vex-sys 0.1.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vex-sys 0.1.0
[INFO] finished tweaking crates.io crate vex-sys 0.1.0
[INFO] tweaked toml for crates.io crate vex-sys 0.1.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05ed242fc82646490a6075be815d28a605e6900d95ea6d9c27d9705593a7fa5f
[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" "05ed242fc82646490a6075be815d28a605e6900d95ea6d9c27d9705593a7fa5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05ed242fc82646490a6075be815d28a605e6900d95ea6d9c27d9705593a7fa5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05ed242fc82646490a6075be815d28a605e6900d95ea6d9c27d9705593a7fa5f", kill_on_drop: false }`
[INFO] [stdout] 05ed242fc82646490a6075be815d28a605e6900d95ea6d9c27d9705593a7fa5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e2b2153bd4094ffd7545fbe3b8408116ff850af0a9df5878f756e98ca580b2d
[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" "2e2b2153bd4094ffd7545fbe3b8408116ff850af0a9df5878f756e98ca580b2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling same-file v0.1.3
[INFO] [stderr]    Compiling bindgen v0.50.1
[INFO] [stderr]    Compiling strum v0.8.0
[INFO] [stderr]    Compiling fs_extra v0.1.0
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling strum_macros v0.8.0
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]    Compiling walkdir v1.0.7
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling foreman v0.4.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling vex-sys v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: could not find native static library `vex-amd64-linux`, perhaps an -L flag is missing?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vex-sys`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "2e2b2153bd4094ffd7545fbe3b8408116ff850af0a9df5878f756e98ca580b2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e2b2153bd4094ffd7545fbe3b8408116ff850af0a9df5878f756e98ca580b2d", kill_on_drop: false }`
[INFO] [stdout] 2e2b2153bd4094ffd7545fbe3b8408116ff850af0a9df5878f756e98ca580b2d