[INFO] fetching crate gc-arena 0.1.1...
[INFO] extracting crate gc-arena 0.1.1 into work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/gc-arena/0.1.1
[INFO] extracting crate gc-arena 0.1.1 into work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/gc-arena/0.1.1
[INFO] validating manifest of gc-arena-0.1.1 on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of gc-arena-0.1.1 on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing gc-arena-0.1.1
[INFO] finished frobbing gc-arena-0.1.1
[INFO] frobbed toml for gc-arena-0.1.1 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/gc-arena/0.1.1/Cargo.toml
[INFO] started frobbing gc-arena-0.1.1
[INFO] finished frobbing gc-arena-0.1.1
[INFO] frobbed toml for gc-arena-0.1.1 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/gc-arena/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking gc-arena-0.1.1 against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-4/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/gc-arena/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 567b7c30a32670e8235e9390f51f77ac62a609a2e88d5b31070924a63096afa9
[INFO] running `"docker" "start" "-a" "567b7c30a32670e8235e9390f51f77ac62a609a2e88d5b31070924a63096afa9"`
[INFO] [stderr]    Compiling gc-arena-derive v0.1.1
[INFO] [stderr]     Checking gc-arena v0.1.1 (/opt/crater/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 2.39s
[INFO] running `"docker" "inspect" "567b7c30a32670e8235e9390f51f77ac62a609a2e88d5b31070924a63096afa9"`
[INFO] running `"docker" "rm" "-f" "567b7c30a32670e8235e9390f51f77ac62a609a2e88d5b31070924a63096afa9"`
[INFO] [stdout] 567b7c30a32670e8235e9390f51f77ac62a609a2e88d5b31070924a63096afa9