[INFO] fetching crate rustc-ap-rustc_expand 657.0.0...
[INFO] checking rustc-ap-rustc_expand-657.0.0 against try#96b3c169cd2d8959926fa240f10342f1659f8ae3 for pr-71896
[INFO] extracting crate rustc-ap-rustc_expand 657.0.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rustc-ap-rustc_expand 657.0.0 on toolchain 96b3c169cd2d8959926fa240f10342f1659f8ae3
[INFO] running `"/workspace/cargo-home/bin/cargo" "+96b3c169cd2d8959926fa240f10342f1659f8ae3" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rustc-ap-rustc_expand 657.0.0
[INFO] finished tweaking crates.io crate rustc-ap-rustc_expand 657.0.0
[INFO] tweaked toml for crates.io crate rustc-ap-rustc_expand 657.0.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+96b3c169cd2d8959926fa240f10342f1659f8ae3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+96b3c169cd2d8959926fa240f10342f1659f8ae3" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+96b3c169cd2d8959926fa240f10342f1659f8ae3" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c13ac26386e7d8c011ab770d52952400bc26ff61f83212841b178fcd63b66726
[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" "c13ac26386e7d8c011ab770d52952400bc26ff61f83212841b178fcd63b66726"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rustc-ap-rustc_ast v657.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_target v657.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_fs_util v657.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_attr v657.0.0
[INFO] [stderr]     Checking version_check v0.9.1
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v657.0.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking termize v0.1.1
[INFO] [stderr]     Checking rustc-ap-rustc_feature v657.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_errors v657.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_session v657.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_ast_pretty v657.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_parse v657.0.0
[INFO] [stderr] error: environment variable `CFG_VERSION` not defined
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_attr-657.0.0/builtin.rs:655:42
[INFO] [stderr]     |
[INFO] [stderr] 655 |             let version = Version::parse(env!("CFG_VERSION")).unwrap();
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `rustc-ap-rustc_attr`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "c13ac26386e7d8c011ab770d52952400bc26ff61f83212841b178fcd63b66726"`
[INFO] running `"docker" "rm" "-f" "c13ac26386e7d8c011ab770d52952400bc26ff61f83212841b178fcd63b66726"`
[INFO] [stdout] c13ac26386e7d8c011ab770d52952400bc26ff61f83212841b178fcd63b66726