[INFO] fetching crate tagged_ptr 0.1.0...
[INFO] checking tagged_ptr-0.1.0 against beta-2019-10-27 for pr-65897
[INFO] extracting crate tagged_ptr 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate tagged_ptr 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 tagged_ptr 0.1.0
[INFO] finished tweaking crates.io crate tagged_ptr 0.1.0
[INFO] tweaked toml for crates.io crate tagged_ptr 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[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] 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=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] 51ecc261ab68649dd7f83eb9af14bb3b64de1a619bec1c56708b5cb1c05c7417
[INFO] running `"docker" "start" "-a" "51ecc261ab68649dd7f83eb9af14bb3b64de1a619bec1c56708b5cb1c05c7417"`
[INFO] [stderr]     Checking tagged_ptr v0.1.0 (/opt/rustwide/workdir)
[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(rc_raw)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^
[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(rc_raw)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `tagged_ptr`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/tagged_ptr.rs:217:32
[INFO] [stderr]     |
[INFO] [stderr] 217 |         let x: X = Unpacked::B(rc);
[INFO] [stderr]     |                                ^^ expected struct `std::rc::Rc`, found struct `std::boxed::Box`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `std::rc::Rc<u32>`
[INFO] [stderr]                found type `std::boxed::Box<std::rc::Rc<{integer}>>`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/tagged_ptr.rs:230:32
[INFO] [stderr]     |
[INFO] [stderr] 230 |         let x: X = Unpacked::B(rc);
[INFO] [stderr]     |                                ^^ expected struct `std::rc::Rc`, found struct `std::boxed::Box`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `std::rc::Rc<u32>`
[INFO] [stderr]                found type `std::boxed::Box<std::rc::Rc<{integer}>>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `tagged_ptr`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "51ecc261ab68649dd7f83eb9af14bb3b64de1a619bec1c56708b5cb1c05c7417"`
[INFO] running `"docker" "rm" "-f" "51ecc261ab68649dd7f83eb9af14bb3b64de1a619bec1c56708b5cb1c05c7417"`
[INFO] [stdout] 51ecc261ab68649dd7f83eb9af14bb3b64de1a619bec1c56708b5cb1c05c7417