[INFO] crate classgroup 0.1.0 is already in cache
[INFO] checking classgroup-0.1.0 against beta-2019-10-27 for pr-65897
[INFO] extracting crate classgroup 0.1.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate classgroup 0.1.0 on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate classgroup 0.1.0
[INFO] finished tweaking crates.io crate classgroup 0.1.0
[INFO] tweaked toml for crates.io crate classgroup 0.1.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "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" "+beta-2019-10-27" "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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=allow" "-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" "+beta-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 27d508cf698294ed78e2da4ce219b22f17cd9ba5ca23bd4001cc8791354801b7
[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" "27d508cf698294ed78e2da4ce219b22f17cd9ba5ca23bd4001cc8791354801b7"`
[INFO] [stderr]     Checking classgroup v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `gmp`
[INFO] [stderr]   --> bench/bench.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use gmp::mpz::Mpz;
[INFO] [stderr]    |     ^^^ use of undeclared type or module `gmp`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Mpz`
[INFO] [stderr]   --> bench/bench.rs:25:23
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let m_2048 = -Mpz::from_str(
[INFO] [stderr]    |                       ^^^ use of undeclared type or module `Mpz`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Mpz`
[INFO] [stderr]   --> bench/bench.rs:39:23
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let m_1024 = -Mpz::from_str(
[INFO] [stderr]    |                       ^^^ use of undeclared type or module `Mpz`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: could not compile `classgroup`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "27d508cf698294ed78e2da4ce219b22f17cd9ba5ca23bd4001cc8791354801b7"`
[INFO] running `"docker" "rm" "-f" "27d508cf698294ed78e2da4ce219b22f17cd9ba5ca23bd4001cc8791354801b7"`
[INFO] [stdout] 27d508cf698294ed78e2da4ce219b22f17cd9ba5ca23bd4001cc8791354801b7