[INFO] cloning repository https://github.com/Anexen/pyxirr-mixed-python-rust-project-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Anexen/pyxirr-mixed-python-rust-project-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnexen%2Fpyxirr-mixed-python-rust-project-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnexen%2Fpyxirr-mixed-python-rust-project-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec7338235e8cf8a875aa897fecc2470f1ec6f131
[INFO] testing Anexen/pyxirr-mixed-python-rust-project-example against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnexen%2Fpyxirr-mixed-python-rust-project-example" "/workspace/builds/worker-114/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-114/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Anexen/pyxirr-mixed-python-rust-project-example 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 git repo https://github.com/Anexen/pyxirr-mixed-python-rust-project-example
[INFO] finished tweaking git repo https://github.com/Anexen/pyxirr-mixed-python-rust-project-example
[INFO] tweaked toml for git repo https://github.com/Anexen/pyxirr-mixed-python-rust-project-example written to /workspace/builds/worker-114/source/Cargo.toml
[INFO] crate git repo https://github.com/Anexen/pyxirr-mixed-python-rust-project-example already has a lockfile, it will not be regenerated
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pyo3cls v0.10.1
[INFO] [stderr]   Downloaded pyo3-derive-backend v0.10.1
[INFO] [stderr]   Downloaded pyo3 v0.10.1
[INFO] [stderr]   Downloaded xirr v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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] e4a26e3262c0252e8affe564a0b913ec7b4c3d2189a0fbbe6d937dd0f252fa09
[INFO] running `Command { std: "docker" "start" "-a" "e4a26e3262c0252e8affe564a0b913ec7b4c3d2189a0fbbe6d937dd0f252fa09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4a26e3262c0252e8affe564a0b913ec7b4c3d2189a0fbbe6d937dd0f252fa09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4a26e3262c0252e8affe564a0b913ec7b4c3d2189a0fbbe6d937dd0f252fa09", kill_on_drop: false }`
[INFO] [stdout] e4a26e3262c0252e8affe564a0b913ec7b4c3d2189a0fbbe6d937dd0f252fa09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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] 78502739da7dd4468eb4209ec254e69026b12ae00a3d653268de11c708bb817a
[INFO] running `Command { std: "docker" "start" "-a" "78502739da7dd4468eb4209ec254e69026b12ae00a3d653268de11c708bb817a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling proc-macro-hack v0.5.16
[INFO] [stderr]    Compiling smallvec v1.4.0
[INFO] [stderr]    Compiling unindent v0.1.5
[INFO] [stderr]    Compiling inventory v0.1.6
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling pyo3 v0.10.1
[INFO] [stderr] error: failed to run custom build command for `pyo3 v0.10.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/pyo3-60a5f3248a790c85/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Error: "PyO3 requires a nightly or dev version of Rust."
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "78502739da7dd4468eb4209ec254e69026b12ae00a3d653268de11c708bb817a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78502739da7dd4468eb4209ec254e69026b12ae00a3d653268de11c708bb817a", kill_on_drop: false }`
[INFO] [stdout] 78502739da7dd4468eb4209ec254e69026b12ae00a3d653268de11c708bb817a