[INFO] updating cached repository https://github.com/samphippen/descriptor
[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] 01336a02a497156bb9d64d1a822aa44b97436139
[INFO] checking samphippen/descriptor against beta-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamphippen%2Fdescriptor" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/samphippen/descriptor 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 git repo https://github.com/samphippen/descriptor
[INFO] removed path dependency expector from git repo https://github.com/samphippen/descriptor
[INFO] finished tweaking git repo https://github.com/samphippen/descriptor
[INFO] tweaked toml for git repo https://github.com/samphippen/descriptor written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/samphippen/descriptor already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: dependency (expector) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-0/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[INFO] the lockfile is outdated, regenerating it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" "+beta-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: dependency (expector) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[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=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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8606425dd3068e828fda606376b4969015e4f79ebd622bd3c1ebc2d1ce2ab410
[INFO] running `"docker" "start" "-a" "8606425dd3068e828fda606376b4969015e4f79ebd622bd3c1ebc2d1ce2ab410"`
[INFO] [stderr] warning: dependency (expector) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Checking expector v0.1.0
[INFO] [stderr]     Checking descriptor v0.1.0-pre (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved imports `std::panic::recover`, `std::panic::RecoverSafe`
[INFO] [stderr]  --> src/example_group/example_group.rs:4:18
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::panic::{recover, RecoverSafe, UnwindSafe};
[INFO] [stderr]   |                  ^^^^^^^  ^^^^^^^^^^^ no `RecoverSafe` in `panic`
[INFO] [stderr]   |                  |
[INFO] [stderr]   |                  no `recover` in `panic`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::boxed::FnBox`
[INFO] [stderr]  --> src/example.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::boxed::FnBox;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^ no `FnBox` in `boxed`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `take_handler` in module `panic`
[INFO] [stderr]   --> src/world.rs:20:37
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let orig_panic_handler = panic::take_handler();
[INFO] [stderr]    |                                     ^^^^^^^^^^^^ not found in `panic`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `set_handler` in module `panic`
[INFO] [stderr]   --> src/world.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 |     panic::set_handler(|_| ());
[INFO] [stderr]    |            ^^^^^^^^^^^ not found in `panic`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `set_handler` in module `panic`
[INFO] [stderr]   --> src/world.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 |     panic::set_handler(move |arg| (*orig_panic_handler)(arg));
[INFO] [stderr]    |            ^^^^^^^^^^^ not found in `panic`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(recover, std_panic, panic_handler, fnbox)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `descriptor`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "8606425dd3068e828fda606376b4969015e4f79ebd622bd3c1ebc2d1ce2ab410"`
[INFO] running `"docker" "rm" "-f" "8606425dd3068e828fda606376b4969015e4f79ebd622bd3c1ebc2d1ce2ab410"`
[INFO] [stdout] 8606425dd3068e828fda606376b4969015e4f79ebd622bd3c1ebc2d1ce2ab410