[INFO] fetching crate arcrs 0.1.1-alpha.7...
[INFO] testing arcrs-0.1.1-alpha.7 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate arcrs 0.1.1-alpha.7 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate arcrs 0.1.1-alpha.7
[INFO] finished tweaking crates.io crate arcrs 0.1.1-alpha.7
[INFO] tweaked toml for crates.io crate arcrs 0.1.1-alpha.7 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate arcrs 0.1.1-alpha.7 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 32 packages to latest compatible versions
[INFO] [stderr]       Adding indoc-impl v0.3.6 (available: v0.3.7)
[INFO] [stderr]       Adding pyo3 v0.12.4 (available: v0.25.1)
[INFO] [stderr]       Adding pyo3-derive-backend v0.12.4 (available: v0.12.5)
[INFO] [stderr]       Adding pyo3cls v0.12.4 (available: v0.12.5)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded indoc v0.3.6
[INFO] [stderr]   Downloaded indoc-impl v0.3.6
[INFO] [stderr]   Downloaded unindent v0.1.11
[INFO] [stderr]   Downloaded pyo3-derive-backend v0.12.4
[INFO] [stderr]   Downloaded pyo3cls v0.12.4
[INFO] [stderr]   Downloaded pyo3 v0.12.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f5f1eed55ecfa3c2da0aa4e18a8afe2e60b46e70c42fbb98c37451ee8bf2fc18
[INFO] running `Command { std: "docker" "start" "-a" "f5f1eed55ecfa3c2da0aa4e18a8afe2e60b46e70c42fbb98c37451ee8bf2fc18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5f1eed55ecfa3c2da0aa4e18a8afe2e60b46e70c42fbb98c37451ee8bf2fc18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5f1eed55ecfa3c2da0aa4e18a8afe2e60b46e70c42fbb98c37451ee8bf2fc18", kill_on_drop: false }`
[INFO] [stdout] f5f1eed55ecfa3c2da0aa4e18a8afe2e60b46e70c42fbb98c37451ee8bf2fc18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 97eea3d62dd6430b8931bc3fbd4f741bd1450d9b7255a66297e0773672c297d1
[INFO] running `Command { std: "docker" "start" "-a" "97eea3d62dd6430b8931bc3fbd4f741bd1450d9b7255a66297e0773672c297d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling cfg-if v1.0.1
[INFO] [stderr]    Compiling inventory v0.1.11
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling unindent v0.1.11
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling pyo3 v0.12.4
[INFO] [stderr]    Compiling instant v0.1.13
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr] error: failed to run custom build command for `pyo3 v0.12.4`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/pyo3-ea53428b270fedeb/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Error: "Must provide PYO3_CROSS_LIB_DIR environment variable when cross-compiling"
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "97eea3d62dd6430b8931bc3fbd4f741bd1450d9b7255a66297e0773672c297d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97eea3d62dd6430b8931bc3fbd4f741bd1450d9b7255a66297e0773672c297d1", kill_on_drop: false }`
[INFO] [stdout] 97eea3d62dd6430b8931bc3fbd4f741bd1450d9b7255a66297e0773672c297d1