[INFO] fetching crate genco-derive 0.5.0-alpha.5...
[INFO] testing genco-derive-0.5.0-alpha.5 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate genco-derive 0.5.0-alpha.5 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate genco-derive 0.5.0-alpha.5 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate genco-derive 0.5.0-alpha.5
[INFO] finished tweaking crates.io crate genco-derive 0.5.0-alpha.5
[INFO] tweaked toml for crates.io crate genco-derive 0.5.0-alpha.5 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded genco-derive v0.5.0-alpha.5
[INFO] [stderr]   Downloaded genco v0.5.0-alpha.5
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e081f49ba9b57bfe6244c4c2a2fc6d5621bbbca2fe1cb6bda2c2e5a72844ae24
[INFO] running `"docker" "start" "-a" "e081f49ba9b57bfe6244c4c2a2fc6d5621bbbca2fe1cb6bda2c2e5a72844ae24"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling genco-derive v0.5.0-alpha.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.23s
[INFO] running `"docker" "inspect" "e081f49ba9b57bfe6244c4c2a2fc6d5621bbbca2fe1cb6bda2c2e5a72844ae24"`
[INFO] running `"docker" "rm" "-f" "e081f49ba9b57bfe6244c4c2a2fc6d5621bbbca2fe1cb6bda2c2e5a72844ae24"`
[INFO] [stdout] e081f49ba9b57bfe6244c4c2a2fc6d5621bbbca2fe1cb6bda2c2e5a72844ae24
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 815b84d1ebcd8d61b97d044b7a3965cb5840d9dc69d6a51ce6b636d263684315
[INFO] running `"docker" "start" "-a" "815b84d1ebcd8d61b97d044b7a3965cb5840d9dc69d6a51ce6b636d263684315"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling genco-derive v0.5.0-alpha.5
[INFO] [stderr]    Compiling genco v0.5.0-alpha.5
[INFO] [stderr] error: proc macro panicked
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/genco-0.5.0-alpha.5/src/lang/java/mod.rs:442:22
[INFO] [stderr]     |
[INFO] [stderr] 442 |             out.push(quote!(import #(package)#(SEP)#(name);));
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: message: failed to join spans
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/genco-0.5.0-alpha.5/src/lib.rs:165:1
[INFO] [stderr]     |
[INFO] [stderr] 165 | #![feature(proc_macro_hygiene)]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `genco`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "815b84d1ebcd8d61b97d044b7a3965cb5840d9dc69d6a51ce6b636d263684315"`
[INFO] running `"docker" "rm" "-f" "815b84d1ebcd8d61b97d044b7a3965cb5840d9dc69d6a51ce6b636d263684315"`
[INFO] [stdout] 815b84d1ebcd8d61b97d044b7a3965cb5840d9dc69d6a51ce6b636d263684315