[INFO] fetching crate sparse_complex 0.1.4...
[INFO] testing sparse_complex-0.1.4 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate sparse_complex 0.1.4 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate sparse_complex 0.1.4
[INFO] finished tweaking crates.io crate sparse_complex 0.1.4
[INFO] tweaked toml for crates.io crate sparse_complex 0.1.4 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sparse_complex 0.1.4 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 67 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0727d4a5c891ebe79db98513b29aff7cd583cf77a95bd8da16f12b673741a4bc
[INFO] running `Command { std: "docker" "start" "-a" "0727d4a5c891ebe79db98513b29aff7cd583cf77a95bd8da16f12b673741a4bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0727d4a5c891ebe79db98513b29aff7cd583cf77a95bd8da16f12b673741a4bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0727d4a5c891ebe79db98513b29aff7cd583cf77a95bd8da16f12b673741a4bc", kill_on_drop: false }`
[INFO] [stdout] 0727d4a5c891ebe79db98513b29aff7cd583cf77a95bd8da16f12b673741a4bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 345e9a74625e14addee481205ca3d9f6aaeb29bf561cda03f37653c6ca77ccd4
[INFO] running `Command { std: "docker" "start" "-a" "345e9a74625e14addee481205ca3d9f6aaeb29bf561cda03f37653c6ca77ccd4", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v1.0.8
[INFO] [stderr]    Compiling curl v0.4.49
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling libz-sys v1.1.22
[INFO] [stderr]    Compiling openssl-sys v0.9.109
[INFO] [stderr]    Compiling curl-sys v0.4.83+curl-8.15.0
[INFO] [stderr]    Compiling flate2 v1.1.2
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling socket2 v0.6.0
[INFO] [stderr]    Compiling filetime v0.2.26
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling xattr v1.5.1
[INFO] [stderr]    Compiling tar v0.4.44
[INFO] [stderr]    Compiling sparse_complex v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `sparse_complex v0.1.4 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/sparse_complex-8b3b200200d4b583/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Error: Error { description: "Couldn't resolve host name", code: 6, extra: Some("Could not resolve host: gitlab.com") }
[INFO] running `Command { std: "docker" "inspect" "345e9a74625e14addee481205ca3d9f6aaeb29bf561cda03f37653c6ca77ccd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "345e9a74625e14addee481205ca3d9f6aaeb29bf561cda03f37653c6ca77ccd4", kill_on_drop: false }`
[INFO] [stdout] 345e9a74625e14addee481205ca3d9f6aaeb29bf561cda03f37653c6ca77ccd4