[INFO] crate tagged_ptr 0.1.0 is already in cache
[INFO] checking tagged_ptr-0.1.0 against master#3dbade652ed8ebac70f903e01f51cd92c4e4302c for pr-69880
[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 3dbade652ed8ebac70f903e01f51cd92c4e4302c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "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" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "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=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" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "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] fd3d24e81d01ea1c415ca7c88b67c579ffbe6f8762ee58fd6ae01f4e6f9c8127
[INFO] running `"docker" "start" "-a" "fd3d24e81d01ea1c415ca7c88b67c579ffbe6f8762ee58fd6ae01f4e6f9c8127"`
[INFO] [stderr]     Checking tagged_ptr v0.1.0 (/opt/rustwide/workdir)
[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 struct `std::rc::Rc<u32>`
[INFO] [stderr]                found struct `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 struct `std::rc::Rc<u32>`
[INFO] [stderr]                found struct `std::boxed::Box<std::rc::Rc<{integer}>>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] warning: the feature `rc_raw` has been stable since 1.17.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(rc_raw)]
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `tagged_ptr`.
[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" "fd3d24e81d01ea1c415ca7c88b67c579ffbe6f8762ee58fd6ae01f4e6f9c8127"`
[INFO] running `"docker" "rm" "-f" "fd3d24e81d01ea1c415ca7c88b67c579ffbe6f8762ee58fd6ae01f4e6f9c8127"`
[INFO] [stdout] fd3d24e81d01ea1c415ca7c88b67c579ffbe6f8762ee58fd6ae01f4e6f9c8127