[INFO] fetching crate gc-arena 0.1.1...
[INFO] checking gc-arena-0.1.1 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate gc-arena 0.1.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate gc-arena 0.1.1 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate gc-arena 0.1.1
[INFO] finished tweaking crates.io crate gc-arena 0.1.1
[INFO] tweaked toml for crates.io crate gc-arena 0.1.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] e62087366258e301cd6deee5b1d5d10e2d4dcef9bb2b9e23dd4dba464449eb21
[INFO] running `"docker" "start" "-a" "e62087366258e301cd6deee5b1d5d10e2d4dcef9bb2b9e23dd4dba464449eb21"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling gc-arena-derive v0.1.1
[INFO] [stderr]     Checking gc-arena v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context.rs:52:36
[INFO] [stderr]    |
[INFO] [stderr] 52 |     all: Cell<Option<NonNull<GcBox<Collect>>>>,
[INFO] [stderr]    |                                    ^^^^^^^ help: use `dyn`: `dyn Collect`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context.rs:53:38
[INFO] [stderr]    |
[INFO] [stderr] 53 |     sweep: Cell<Option<NonNull<GcBox<Collect>>>>,
[INFO] [stderr]    |                                      ^^^^^^^ help: use `dyn`: `dyn Collect`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context.rs:54:43
[INFO] [stderr]    |
[INFO] [stderr] 54 |     sweep_prev: Cell<Option<NonNull<GcBox<Collect>>>>,
[INFO] [stderr]    |                                           ^^^^^^^ help: use `dyn`: `dyn Collect`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context.rs:56:37
[INFO] [stderr]    |
[INFO] [stderr] 56 |     gray: RefCell<Vec<NonNull<GcBox<Collect>>>>,
[INFO] [stderr]    |                                     ^^^^^^^ help: use `dyn`: `dyn Collect`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context.rs:57:43
[INFO] [stderr]    |
[INFO] [stderr] 57 |     gray_again: RefCell<Vec<NonNull<GcBox<Collect>>>>,
[INFO] [stderr]    |                                           ^^^^^^^ help: use `dyn`: `dyn Collect`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context.rs:62:45
[INFO] [stderr]    |
[INFO] [stderr] 62 |         struct DropAll(Option<NonNull<GcBox<Collect>>>);
[INFO] [stderr]    |                                             ^^^^^^^ help: use `dyn`: `dyn Collect`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/context.rs:321:49
[INFO] [stderr]     |
[INFO] [stderr] 321 | unsafe fn static_gc_box<'gc>(ptr: NonNull<GcBox<Collect + 'gc>>) -> NonNull<GcBox<Collect>> {
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn Collect + 'gc`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/context.rs:321:83
[INFO] [stderr]     |
[INFO] [stderr] 321 | unsafe fn static_gc_box<'gc>(ptr: NonNull<GcBox<Collect + 'gc>>) -> NonNull<GcBox<Collect>> {
[INFO] [stderr]     |                                                                                   ^^^^^^^ help: use `dyn`: `dyn Collect`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/types.rs:16:48
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub(crate) next: Cell<Option<NonNull<GcBox<Collect>>>>,
[INFO] [stderr]    |                                                ^^^^^^^ help: use `dyn`: `dyn Collect`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context.rs:52:36
[INFO] [stderr]    |
[INFO] [stderr] 52 |     all: Cell<Option<NonNull<GcBox<Collect>>>>,
[INFO] [stderr]    |                                    ^^^^^^^ help: use `dyn`: `dyn Collect`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context.rs:53:38
[INFO] [stderr]    |
[INFO] [stderr] 53 |     sweep: Cell<Option<NonNull<GcBox<Collect>>>>,
[INFO] [stderr]    |                                      ^^^^^^^ help: use `dyn`: `dyn Collect`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context.rs:54:43
[INFO] [stderr]    |
[INFO] [stderr] 54 |     sweep_prev: Cell<Option<NonNull<GcBox<Collect>>>>,
[INFO] [stderr]    |                                           ^^^^^^^ help: use `dyn`: `dyn Collect`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context.rs:56:37
[INFO] [stderr]    |
[INFO] [stderr] 56 |     gray: RefCell<Vec<NonNull<GcBox<Collect>>>>,
[INFO] [stderr]    |                                     ^^^^^^^ help: use `dyn`: `dyn Collect`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context.rs:57:43
[INFO] [stderr]    |
[INFO] [stderr] 57 |     gray_again: RefCell<Vec<NonNull<GcBox<Collect>>>>,
[INFO] [stderr]    |                                           ^^^^^^^ help: use `dyn`: `dyn Collect`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context.rs:62:45
[INFO] [stderr]    |
[INFO] [stderr] 62 |         struct DropAll(Option<NonNull<GcBox<Collect>>>);
[INFO] [stderr]    |                                             ^^^^^^^ help: use `dyn`: `dyn Collect`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/context.rs:321:49
[INFO] [stderr]     |
[INFO] [stderr] 321 | unsafe fn static_gc_box<'gc>(ptr: NonNull<GcBox<Collect + 'gc>>) -> NonNull<GcBox<Collect>> {
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn Collect + 'gc`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/context.rs:321:83
[INFO] [stderr]     |
[INFO] [stderr] 321 | unsafe fn static_gc_box<'gc>(ptr: NonNull<GcBox<Collect + 'gc>>) -> NonNull<GcBox<Collect>> {
[INFO] [stderr]     |                                                                                   ^^^^^^^ help: use `dyn`: `dyn Collect`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/types.rs:16:48
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub(crate) next: Cell<Option<NonNull<GcBox<Collect>>>>,
[INFO] [stderr]    |                                                ^^^^^^^ help: use `dyn`: `dyn Collect`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.94s
[INFO] running `"docker" "inspect" "e62087366258e301cd6deee5b1d5d10e2d4dcef9bb2b9e23dd4dba464449eb21"`
[INFO] running `"docker" "rm" "-f" "e62087366258e301cd6deee5b1d5d10e2d4dcef9bb2b9e23dd4dba464449eb21"`
[INFO] [stdout] e62087366258e301cd6deee5b1d5d10e2d4dcef9bb2b9e23dd4dba464449eb21