[INFO] fetching crate copying_gc 0.1.0...
[INFO] checking copying_gc-0.1.0 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] extracting crate copying_gc 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate copying_gc 0.1.0 on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate copying_gc 0.1.0
[INFO] finished tweaking crates.io crate copying_gc 0.1.0
[INFO] tweaked toml for crates.io crate copying_gc 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15f7ffc0b5fd8b9132ec925299ad4a12f14fc30e119fe8c53d428df794a246af
[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" "15f7ffc0b5fd8b9132ec925299ad4a12f14fc30e119fe8c53d428df794a246af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15f7ffc0b5fd8b9132ec925299ad4a12f14fc30e119fe8c53d428df794a246af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15f7ffc0b5fd8b9132ec925299ad4a12f14fc30e119fe8c53d428df794a246af", kill_on_drop: false }`
[INFO] [stdout] 15f7ffc0b5fd8b9132ec925299ad4a12f14fc30e119fe8c53d428df794a246af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 042dc3bea9ba232a692be8983a72be2ebd4e3d3ab88d31bcbd7a2be985f59f03
[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" "042dc3bea9ba232a692be8983a72be2ebd4e3d3ab88d31bcbd7a2be985f59f03", kill_on_drop: false }`
[INFO] [stderr]     Checking copying_gc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `alloc::heap`
[INFO] [stdout]  --> src/bitmap.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use alloc::heap;
[INFO] [stdout]   |     ^^^^^^^^^^^ no `heap` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `alloc::heap`
[INFO] [stdout]  --> src/space.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use alloc::heap as alloc_heap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ no `heap` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/space.rs:65:39
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn realloc(&mut self, p: &mut RootedTrait) {
[INFO] [stdout]    |                                       ^^^^^^^^^^^ help: use `dyn`: `dyn RootedTrait`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/space.rs:77:34
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn marked(&mut self, p: &HeapTrait) -> bool {
[INFO] [stdout]    |                                  ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/space.rs:85:41
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn forward(&mut self, ptr: &mut HeapTrait) {
[INFO] [stdout]    |                                         ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/space.rs:89:59
[INFO] [stdout]    |
[INFO] [stdout] 89 |                 let forwarded = *(ptr.raw_inner() as *mut (*mut u8));
[INFO] [stdout]    |                                                           ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runtime.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |     allocated: Vec<Box<RootedTrait>>,
[INFO] [stdout]    |                        ^^^^^^^^^^^ help: use `dyn`: `dyn RootedTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runtime.rs:43:40
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut new_allocated: Vec<Box<RootedTrait>> = vec![];
[INFO] [stdout]    |                                        ^^^^^^^^^^^ help: use `dyn`: `dyn RootedTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trace.rs:18:41
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn subfields(&mut self) -> Vec<&mut HeapTrait>;
[INFO] [stdout]    |                                         ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trace.rs:24:84
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn trace_with<'a, Tracer>(&'a mut self, _: Tracer) where Tracer: FnMut(&'a mut HeapTrait) { }
[INFO] [stdout]    |                                                                                    ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trace.rs:28:81
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn trace_with<'a, Tracer>(&'a mut self, Tracer) where Tracer: FnMut(&'a mut HeapTrait);
[INFO] [stdout]    |                                                                                 ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trace.rs:45:41
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn subfields(&mut self) -> Vec<&mut HeapTrait> {
[INFO] [stdout]    |                                         ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ptr.rs:14:37
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn space_ptr(&mut self) -> &mut SpacePtrTrait;
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn SpacePtrTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ptr.rs:77:37
[INFO] [stdout]    |
[INFO] [stdout] 77 |     fn space_ptr(&mut self) -> &mut SpacePtrTrait {
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn SpacePtrTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/ptr.rs:85:46
[INFO] [stdout]    |
[INFO] [stdout] 85 |             *(self.space_ptr.inner() as *mut (*mut T)) = space_ptr.inner();
[INFO] [stdout]    |                                              ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ptr.rs:95:42
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn subfields(&mut self)  -> Vec<&mut HeapTrait> {
[INFO] [stdout]    |                                          ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ptr.rs:111:30
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn inner(&self) -> *mut (Trace + 'static) { self.0.inner() }
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Trace + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ptr.rs:121:42
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn subfields(&mut self)  -> Vec<&mut HeapTrait> {
[INFO] [stdout]     |                                          ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/space_ptr.rs:6:30
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn inner(&self) -> *mut (Trace + 'static);
[INFO] [stdout]   |                              ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Trace + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/space_ptr.rs:39:42
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn subfields(&mut self)  -> Vec<&mut HeapTrait> {
[INFO] [stdout]    |                                          ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/space_ptr.rs:45:30
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn inner(&self) -> *mut (Trace + 'static) {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Trace + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/space_ptr.rs:46:29
[INFO] [stdout]    |
[INFO] [stdout] 46 |         self.inner as *mut (Trace + 'static)
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Trace + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `alloc::heap`
[INFO] [stdout]  --> src/bitmap.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use alloc::heap;
[INFO] [stdout]   |     ^^^^^^^^^^^ no `heap` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `alloc::heap`
[INFO] [stdout]  --> src/space.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use alloc::heap as alloc_heap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ no `heap` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/space.rs:65:39
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn realloc(&mut self, p: &mut RootedTrait) {
[INFO] [stdout]    |                                       ^^^^^^^^^^^ help: use `dyn`: `dyn RootedTrait`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/space.rs:77:34
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn marked(&mut self, p: &HeapTrait) -> bool {
[INFO] [stdout]    |                                  ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/space.rs:85:41
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn forward(&mut self, ptr: &mut HeapTrait) {
[INFO] [stdout]    |                                         ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/space.rs:89:59
[INFO] [stdout]    |
[INFO] [stdout] 89 |                 let forwarded = *(ptr.raw_inner() as *mut (*mut u8));
[INFO] [stdout]    |                                                           ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runtime.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |     allocated: Vec<Box<RootedTrait>>,
[INFO] [stdout]    |                        ^^^^^^^^^^^ help: use `dyn`: `dyn RootedTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runtime.rs:43:40
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut new_allocated: Vec<Box<RootedTrait>> = vec![];
[INFO] [stdout]    |                                        ^^^^^^^^^^^ help: use `dyn`: `dyn RootedTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trace.rs:18:41
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn subfields(&mut self) -> Vec<&mut HeapTrait>;
[INFO] [stdout]    |                                         ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trace.rs:24:84
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn trace_with<'a, Tracer>(&'a mut self, _: Tracer) where Tracer: FnMut(&'a mut HeapTrait) { }
[INFO] [stdout]    |                                                                                    ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trace.rs:28:81
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn trace_with<'a, Tracer>(&'a mut self, Tracer) where Tracer: FnMut(&'a mut HeapTrait);
[INFO] [stdout]    |                                                                                 ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trace.rs:45:41
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn subfields(&mut self) -> Vec<&mut HeapTrait> {
[INFO] [stdout]    |                                         ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ptr.rs:14:37
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn space_ptr(&mut self) -> &mut SpacePtrTrait;
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn SpacePtrTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ptr.rs:77:37
[INFO] [stdout]    |
[INFO] [stdout] 77 |     fn space_ptr(&mut self) -> &mut SpacePtrTrait {
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn SpacePtrTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/ptr.rs:85:46
[INFO] [stdout]    |
[INFO] [stdout] 85 |             *(self.space_ptr.inner() as *mut (*mut T)) = space_ptr.inner();
[INFO] [stdout]    |                                              ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ptr.rs:95:42
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn subfields(&mut self)  -> Vec<&mut HeapTrait> {
[INFO] [stdout]    |                                          ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ptr.rs:111:30
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn inner(&self) -> *mut (Trace + 'static) { self.0.inner() }
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Trace + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ptr.rs:121:42
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn subfields(&mut self)  -> Vec<&mut HeapTrait> {
[INFO] [stdout]     |                                          ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/space_ptr.rs:6:30
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn inner(&self) -> *mut (Trace + 'static);
[INFO] [stdout]   |                              ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Trace + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/space_ptr.rs:39:42
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn subfields(&mut self)  -> Vec<&mut HeapTrait> {
[INFO] [stdout]    |                                          ^^^^^^^^^ help: use `dyn`: `dyn HeapTrait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/space_ptr.rs:45:30
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn inner(&self) -> *mut (Trace + 'static) {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Trace + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/space_ptr.rs:46:29
[INFO] [stdout]    |
[INFO] [stdout] 46 |         self.inner as *mut (Trace + 'static)
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Trace + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `copying_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] [stdout] error: aborting due to 2 previous errors; 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "042dc3bea9ba232a692be8983a72be2ebd4e3d3ab88d31bcbd7a2be985f59f03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "042dc3bea9ba232a692be8983a72be2ebd4e3d3ab88d31bcbd7a2be985f59f03", kill_on_drop: false }`
[INFO] [stdout] 042dc3bea9ba232a692be8983a72be2ebd4e3d3ab88d31bcbd7a2be985f59f03