[INFO] crate tango-client 0.2.3 is already in cache
[INFO] testing tango-client-0.2.3 against 1.45.2 for beta-1.46-1
[INFO] extracting crate tango-client 0.2.3 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate tango-client 0.2.3 on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tango-client 0.2.3
[INFO] finished tweaking crates.io crate tango-client 0.2.3
[INFO] tweaked toml for crates.io crate tango-client 0.2.3 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86facb5835abad1ce7cecd5e24fec6ea9b56616ef49239ff563ff2154ca757a2
[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" "86facb5835abad1ce7cecd5e24fec6ea9b56616ef49239ff563ff2154ca757a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86facb5835abad1ce7cecd5e24fec6ea9b56616ef49239ff563ff2154ca757a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86facb5835abad1ce7cecd5e24fec6ea9b56616ef49239ff563ff2154ca757a2", kill_on_drop: false }`
[INFO] [stdout] 86facb5835abad1ce7cecd5e24fec6ea9b56616ef49239ff563ff2154ca757a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4878f7402210a29e688729d069943eb5cb4a580dc45aeb43c3dfcd1ca89adf47
[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" "4878f7402210a29e688729d069943eb5cb4a580dc45aeb43c3dfcd1ca89adf47", kill_on_drop: false }`
[INFO] [stderr]    Compiling tango-client-sys v0.1.2
[INFO] [stderr] error: failed to run custom build command for `tango-client-sys v0.1.2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/tango-client-sys-60d897d3a8f01120/build-script-build` (exit code: 1)
[INFO] [stderr] --- stdout
[INFO] [stderr] cargo:rerun-if-env-changed=TANGO_NO_PKG_CONFIG
[INFO] [stderr] cargo:rerun-if-env-changed=PKG_CONFIG
[INFO] [stderr] cargo:rerun-if-env-changed=TANGO_STATIC
[INFO] [stderr] cargo:rerun-if-env-changed=TANGO_DYNAMIC
[INFO] [stderr] cargo:rerun-if-env-changed=PKG_CONFIG_ALL_STATIC
[INFO] [stderr] cargo:rerun-if-env-changed=PKG_CONFIG_ALL_DYNAMIC
[INFO] [stderr] cargo:rerun-if-env-changed=PKG_CONFIG_PATH_x86_64-unknown-linux-gnu
[INFO] [stderr] cargo:rerun-if-env-changed=PKG_CONFIG_PATH_x86_64_unknown_linux_gnu
[INFO] [stderr] cargo:rerun-if-env-changed=HOST_PKG_CONFIG_PATH
[INFO] [stderr] cargo:rerun-if-env-changed=PKG_CONFIG_PATH
[INFO] [stderr] cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR_x86_64-unknown-linux-gnu
[INFO] [stderr] cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR_x86_64_unknown_linux_gnu
[INFO] [stderr] cargo:rerun-if-env-changed=HOST_PKG_CONFIG_LIBDIR
[INFO] [stderr] cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR
[INFO] [stderr] cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_x86_64-unknown-linux-gnu
[INFO] [stderr] cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_x86_64_unknown_linux_gnu
[INFO] [stderr] cargo:rerun-if-env-changed=HOST_PKG_CONFIG_SYSROOT_DIR
[INFO] [stderr] cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR
[INFO] [stderr] `"pkg-config" "--libs" "--cflags" "tango"` did not exit successfully: exit code: 1
[INFO] [stderr] --- stderr
[INFO] [stderr] Package tango was not found in the pkg-config search path.
[INFO] [stderr] Perhaps you should add the directory containing `tango.pc'
[INFO] [stderr] to the PKG_CONFIG_PATH environment variable
[INFO] [stderr] No package 'tango' found
[INFO] [stderr] ---
[INFO] running `Command { std: "docker" "inspect" "4878f7402210a29e688729d069943eb5cb4a580dc45aeb43c3dfcd1ca89adf47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4878f7402210a29e688729d069943eb5cb4a580dc45aeb43c3dfcd1ca89adf47", kill_on_drop: false }`
[INFO] [stdout] 4878f7402210a29e688729d069943eb5cb4a580dc45aeb43c3dfcd1ca89adf47