[INFO] crate pin-project 0.4.6 is already in cache
[INFO] checking pin-project-0.4.6 against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] extracting crate pin-project 0.4.6 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate pin-project 0.4.6 on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate pin-project 0.4.6
[INFO] finished tweaking crates.io crate pin-project 0.4.6
[INFO] tweaked toml for crates.io crate pin-project 0.4.6 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate pin-project 0.4.6 already has a lockfile, it will not be regenerated
[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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e6c75cde1237537fd425c90e9ce545411d26b38bc0c951af7457dd4e78cb69d4
[INFO] running `"docker" "start" "-a" "e6c75cde1237537fd425c90e9ce545411d26b38bc0c951af7457dd4e78cb69d4"`
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.6
[INFO] [stderr]     Checking pin-project v0.4.6 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `rustversion`
[INFO] [stderr]    --> tests/pin_project.rs:338:3
[INFO] [stderr]     |
[INFO] [stderr] 338 | #[rustversion::since(1.36)]
[INFO] [stderr]     |   ^^^^^^^^^^^ use of undeclared type or module `rustversion`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: could not compile `pin-project`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e6c75cde1237537fd425c90e9ce545411d26b38bc0c951af7457dd4e78cb69d4"`
[INFO] running `"docker" "rm" "-f" "e6c75cde1237537fd425c90e9ce545411d26b38bc0c951af7457dd4e78cb69d4"`
[INFO] [stdout] e6c75cde1237537fd425c90e9ce545411d26b38bc0c951af7457dd4e78cb69d4