[INFO] fetching crate tagged_ptr 0.1.0...
[INFO] checking tagged_ptr-0.1.0 against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] extracting crate tagged_ptr 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate tagged_ptr 0.1.0 on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7327c1f6d4560595eee4a49fd13907ab75661afa39848760aa9f921323e8d4b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f7327c1f6d4560595eee4a49fd13907ab75661afa39848760aa9f921323e8d4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7327c1f6d4560595eee4a49fd13907ab75661afa39848760aa9f921323e8d4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7327c1f6d4560595eee4a49fd13907ab75661afa39848760aa9f921323e8d4b", kill_on_drop: false }`
[INFO] [stdout] f7327c1f6d4560595eee4a49fd13907ab75661afa39848760aa9f921323e8d4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6dfaa977dfab2c2d6280e00aaf43863ee7f1b96809c376443730c9c4f669a740
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6dfaa977dfab2c2d6280e00aaf43863ee7f1b96809c376443730c9c4f669a740", kill_on_drop: false }`
[INFO] [stderr]     Checking tagged_ptr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/tagged_ptr.rs:217:32
[INFO] [stdout]     |
[INFO] [stdout] 217 |         let x: X = Unpacked::B(rc);
[INFO] [stdout]     |                                ^^ expected struct `std::rc::Rc`, found struct `std::boxed::Box`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected struct `std::rc::Rc<u32>`
[INFO] [stdout]                found struct `std::boxed::Box<std::rc::Rc<{integer}>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/tagged_ptr.rs:230:32
[INFO] [stdout]     |
[INFO] [stdout] 230 |         let x: X = Unpacked::B(rc);
[INFO] [stdout]     |                                ^^ expected struct `std::rc::Rc`, found struct `std::boxed::Box`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected struct `std::rc::Rc<u32>`
[INFO] [stdout]                found struct `std::boxed::Box<std::rc::Rc<{integer}>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `rc_raw` has been stable since 1.17.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rc_raw)]
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tagged_ptr`.
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[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 `Command { std: "docker" "inspect" "6dfaa977dfab2c2d6280e00aaf43863ee7f1b96809c376443730c9c4f669a740", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dfaa977dfab2c2d6280e00aaf43863ee7f1b96809c376443730c9c4f669a740", kill_on_drop: false }`
[INFO] [stdout] 6dfaa977dfab2c2d6280e00aaf43863ee7f1b96809c376443730c9c4f669a740