[INFO] crate sexpr 0.1.0 is already in cache
[INFO] checking sexpr-0.1.0 against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] extracting crate sexpr 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate sexpr 0.1.0 on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate sexpr 0.1.0
[INFO] finished tweaking crates.io crate sexpr 0.1.0
[INFO] tweaked toml for crates.io crate sexpr 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 70b5aaf51adfe0a2cf75f38b92c800deadf9a38abda5be94e4ccbdd8c3a01641
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "70b5aaf51adfe0a2cf75f38b92c800deadf9a38abda5be94e4ccbdd8c3a01641"`
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking gc v0.2.1
[INFO] [stderr] error[E0432]: unresolved import `core::nonzero`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gc-0.2.1/src/lib.rs:11:11
[INFO] [stderr]    |
[INFO] [stderr] 11 | use core::nonzero::NonZero;
[INFO] [stderr]    |           ^^^^^^^ could not find `nonzero` in `core`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::ptr::Shared`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gc-0.2.1/src/gc.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::ptr::Shared;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^ no `Shared` in `ptr`
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gc-0.2.1/src/lib.rs:41:17
[INFO] [stderr]    |
[INFO] [stderr] 41 | impl<T: ?Sized> !Send for Gc<T> {}
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stderr]    = help: add `#![feature(negative_impls)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gc-0.2.1/src/lib.rs:43:17
[INFO] [stderr]    |
[INFO] [stderr] 43 | impl<T: ?Sized> !Sync for Gc<T> {}
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stderr]    = help: add `#![feature(negative_impls)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gc-0.2.1/src/lib.rs:541:17
[INFO] [stderr]     |
[INFO] [stderr] 541 | impl<T: ?Sized> !Sync for GcCell<T> {}
[INFO] [stderr]     |                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stderr]     = help: add `#![feature(negative_impls)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr]    Compiling syn v0.10.8
[INFO] [stderr] error[E0374]: the trait `CoerceUnsized` may only be implemented for a coercion between structures with one field being coerced, none found
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gc-0.2.1/src/lib.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | impl<T: Trace + ?Sized + marker::Unsize<U>, U: Trace + ?Sized> CoerceUnsized<Gc<U>> for Gc<T> {}
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0374, E0432, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0374`.
[INFO] [stderr] error: could not compile `gc`.
[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" "70b5aaf51adfe0a2cf75f38b92c800deadf9a38abda5be94e4ccbdd8c3a01641"`
[INFO] running `"docker" "rm" "-f" "70b5aaf51adfe0a2cf75f38b92c800deadf9a38abda5be94e4ccbdd8c3a01641"`
[INFO] [stdout] 70b5aaf51adfe0a2cf75f38b92c800deadf9a38abda5be94e4ccbdd8c3a01641