[INFO] updating cached repository https://github.com/code-ape/rust_python_extension
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] eb6ecf1e508d044bb932fd65130c426e932b7675
[INFO] checking code-ape/rust_python_extension against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcode-ape%2Frust_python_extension" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/code-ape/rust_python_extension on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/code-ape/rust_python_extension
[INFO] finished tweaking git repo https://github.com/code-ape/rust_python_extension
[INFO] tweaked toml for git repo https://github.com/code-ape/rust_python_extension written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/code-ape/rust_python_extension already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-3/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/dgrunwald/rust-cpython.git`
[INFO] [stderr]     Updating git repository `https://github.com/dgrunwald/interpolate_idents.git`
[INFO] [stderr]     Updating git repository `https://github.com/dgrunwald/interpolate_idents.git`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=forbid" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4efd8b215f531e18e95218c28a9c853bd53c97f274c48939ba003ea69e86179e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "4efd8b215f531e18e95218c28a9c853bd53c97f274c48939ba003ea69e86179e"`
[INFO] [stderr]    Compiling cpython v0.0.3 (https://github.com/dgrunwald/rust-cpython.git?rev=a23b5b591060574de91067d77081f56082aa21b2#a23b5b59)
[INFO] [stderr]     Checking abort_on_panic v1.0.0
[INFO] [stderr]    Compiling interpolate_idents v0.0.8 (https://github.com/dgrunwald/interpolate_idents.git#7e0b4dcc)
[INFO] [stderr]    Compiling interpolate_idents v0.0.3 (https://github.com/dgrunwald/interpolate_idents.git?rev=2215f3b3a664b202a9fcf6ca34efbdef8274c59c#2215f3b3)
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking num-complex v0.2.3
[INFO] [stderr]    Compiling python27-sys v0.3.0
[INFO] [stderr] error[E0463]: can't find crate for `rustc`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/git/checkouts/interpolate_idents-8a2fe00ad7320b7f/2215f3b/src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | extern crate rustc;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `interpolate_idents`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0463]: can't find crate for `rustc`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/git/checkouts/interpolate_idents-8a2fe00ad7320b7f/7e0b4dc/src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | extern crate rustc;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `interpolate_idents`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "4efd8b215f531e18e95218c28a9c853bd53c97f274c48939ba003ea69e86179e"`
[INFO] running `"docker" "rm" "-f" "4efd8b215f531e18e95218c28a9c853bd53c97f274c48939ba003ea69e86179e"`
[INFO] [stdout] 4efd8b215f531e18e95218c28a9c853bd53c97f274c48939ba003ea69e86179e