[INFO] cloning repository https://github.com/francescofranze/gc3c
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/francescofranze/gc3c" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrancescofranze%2Fgc3c", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrancescofranze%2Fgc3c'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 13e0f9aff7e04ab068230ec0d8d7c77b2b11e325
[INFO] checking francescofranze/gc3c against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrancescofranze%2Fgc3c" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/francescofranze/gc3c on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/francescofranze/gc3c
[INFO] finished tweaking git repo https://github.com/francescofranze/gc3c
[INFO] tweaked toml for git repo https://github.com/francescofranze/gc3c written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/francescofranze/gc3c already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1eb5692790978df018cd36c2213328088ff5fe751164573dd842aa836ddbb3e1
[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" "1eb5692790978df018cd36c2213328088ff5fe751164573dd842aa836ddbb3e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1eb5692790978df018cd36c2213328088ff5fe751164573dd842aa836ddbb3e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1eb5692790978df018cd36c2213328088ff5fe751164573dd842aa836ddbb3e1", kill_on_drop: false }`
[INFO] [stdout] 1eb5692790978df018cd36c2213328088ff5fe751164573dd842aa836ddbb3e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0aac9d91b215ab6e88798c12391ac4082372ce1bbabc35d8580dbd051f42ba02
[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" "0aac9d91b215ab6e88798c12391ac4082372ce1bbabc35d8580dbd051f42ba02", kill_on_drop: false }`
[INFO] [stderr]     Checking gc3c v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `core::alloc::Alloc`
[INFO] [stdout]   --> src/lib.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use core::alloc::Alloc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ no `Alloc` in `alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(unsize)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(coerce_unsized)] 
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(alloc)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(allocator_api)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:196:20
[INFO] [stdout]     |
[INFO] [stdout] 196 |     whites: Vec<Gc<Mark>>,
[INFO] [stdout]     |                    ^^^^ help: use `dyn`: `dyn Mark`
[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/lib.rs:197:19
[INFO] [stdout]     |
[INFO] [stdout] 197 |     greys: Vec<Gc<Mark>>,
[INFO] [stdout]     |                   ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:198:20
[INFO] [stdout]     |
[INFO] [stdout] 198 |     blacks: Vec<Gc<Mark>>,
[INFO] [stdout]     |                    ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:199:19
[INFO] [stdout]     |
[INFO] [stdout] 199 |     roots: Vec<Gc<Mark>>,
[INFO] [stdout]     |                   ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:229:33
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn movec(&mut self, obj: Gc<Mark>, color: GcColor) {
[INFO] [stdout]     |                                 ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:237:35
[INFO] [stdout]     |
[INFO] [stdout] 237 |     fn remove(&mut self, obj: &Gc<Mark>) {
[INFO] [stdout]     |                                   ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:268:31
[INFO] [stdout]     |
[INFO] [stdout] 268 |     fn add(&mut self, obj: Gc<Mark>, color: GcColor) {
[INFO] [stdout]     |                               ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:302:34
[INFO] [stdout]     |
[INFO] [stdout] 302 |     fn mark_1(&mut self, obj: Gc<Mark>) {
[INFO] [stdout]     |                                  ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:308:37
[INFO] [stdout]     |
[INFO] [stdout] 308 |     fn mark_grey(&mut self, obj: Gc<Mark>) {
[INFO] [stdout]     |                                     ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:358:36
[INFO] [stdout]     |
[INFO] [stdout] 358 |     pub fn add_root(&self, obj: Gc<Mark>) {
[INFO] [stdout]     |                                    ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:367:35
[INFO] [stdout]     |
[INFO] [stdout] 367 |     pub fn rm_root(&self, obj: Gc<Mark>) {
[INFO] [stdout]     |                                   ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:397:33
[INFO] [stdout]     |
[INFO] [stdout] 397 |     pub fn new_ref(&self, o: Gc<Mark>, robj: Gc<Mark>) {
[INFO] [stdout]     |                                 ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:397:49
[INFO] [stdout]     |
[INFO] [stdout] 397 |     pub fn new_ref(&self, o: Gc<Mark>, robj: Gc<Mark>) {
[INFO] [stdout]     |                                                 ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:453:31
[INFO] [stdout]     |
[INFO] [stdout] 453 |         let mut it = Vec::<Gc<Mark>>::new();
[INFO] [stdout]     |                               ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:503:26
[INFO] [stdout]     |
[INFO] [stdout] 503 |     pub fn new_ref(o: Gc<Mark>, r: Gc<Mark>) {
[INFO] [stdout]     |                          ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:503:39
[INFO] [stdout]     |
[INFO] [stdout] 503 |     pub fn new_ref(o: Gc<Mark>, r: Gc<Mark>) {
[INFO] [stdout]     |                                       ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:528:27
[INFO] [stdout]     |
[INFO] [stdout] 528 |     pub fn add_root(o: Gc<Mark>) {
[INFO] [stdout]     |                           ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:534:26
[INFO] [stdout]     |
[INFO] [stdout] 534 |     pub fn rm_root(o: Gc<Mark>) {
[INFO] [stdout]     |                          ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `core::alloc::Alloc`
[INFO] [stdout]   --> src/lib.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use core::alloc::Alloc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ no `Alloc` in `alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(unsize)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(coerce_unsized)] 
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(alloc)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(allocator_api)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:196:20
[INFO] [stdout]     |
[INFO] [stdout] 196 |     whites: Vec<Gc<Mark>>,
[INFO] [stdout]     |                    ^^^^ help: use `dyn`: `dyn Mark`
[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/lib.rs:197:19
[INFO] [stdout]     |
[INFO] [stdout] 197 |     greys: Vec<Gc<Mark>>,
[INFO] [stdout]     |                   ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:198:20
[INFO] [stdout]     |
[INFO] [stdout] 198 |     blacks: Vec<Gc<Mark>>,
[INFO] [stdout]     |                    ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:199:19
[INFO] [stdout]     |
[INFO] [stdout] 199 |     roots: Vec<Gc<Mark>>,
[INFO] [stdout]     |                   ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:229:33
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn movec(&mut self, obj: Gc<Mark>, color: GcColor) {
[INFO] [stdout]     |                                 ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:237:35
[INFO] [stdout]     |
[INFO] [stdout] 237 |     fn remove(&mut self, obj: &Gc<Mark>) {
[INFO] [stdout]     |                                   ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:268:31
[INFO] [stdout]     |
[INFO] [stdout] 268 |     fn add(&mut self, obj: Gc<Mark>, color: GcColor) {
[INFO] [stdout]     |                               ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:302:34
[INFO] [stdout]     |
[INFO] [stdout] 302 |     fn mark_1(&mut self, obj: Gc<Mark>) {
[INFO] [stdout]     |                                  ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:308:37
[INFO] [stdout]     |
[INFO] [stdout] 308 |     fn mark_grey(&mut self, obj: Gc<Mark>) {
[INFO] [stdout]     |                                     ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:358:36
[INFO] [stdout]     |
[INFO] [stdout] 358 |     pub fn add_root(&self, obj: Gc<Mark>) {
[INFO] [stdout]     |                                    ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:367:35
[INFO] [stdout]     |
[INFO] [stdout] 367 |     pub fn rm_root(&self, obj: Gc<Mark>) {
[INFO] [stdout]     |                                   ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:397:33
[INFO] [stdout]     |
[INFO] [stdout] 397 |     pub fn new_ref(&self, o: Gc<Mark>, robj: Gc<Mark>) {
[INFO] [stdout]     |                                 ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:397:49
[INFO] [stdout]     |
[INFO] [stdout] 397 |     pub fn new_ref(&self, o: Gc<Mark>, robj: Gc<Mark>) {
[INFO] [stdout]     |                                                 ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:453:31
[INFO] [stdout]     |
[INFO] [stdout] 453 |         let mut it = Vec::<Gc<Mark>>::new();
[INFO] [stdout]     |                               ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:503:26
[INFO] [stdout]     |
[INFO] [stdout] 503 |     pub fn new_ref(o: Gc<Mark>, r: Gc<Mark>) {
[INFO] [stdout]     |                          ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:503:39
[INFO] [stdout]     |
[INFO] [stdout] 503 |     pub fn new_ref(o: Gc<Mark>, r: Gc<Mark>) {
[INFO] [stdout]     |                                       ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:528:27
[INFO] [stdout]     |
[INFO] [stdout] 528 |     pub fn add_root(o: Gc<Mark>) {
[INFO] [stdout]     |                           ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:534:26
[INFO] [stdout]     |
[INFO] [stdout] 534 |     pub fn rm_root(o: Gc<Mark>) {
[INFO] [stdout]     |                          ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:601:42
[INFO] [stdout]     |
[INFO] [stdout] 601 |     fn assert_is_white(gc: &GcEnv, o: Gc<Mark>) {
[INFO] [stdout]     |                                          ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:607:42
[INFO] [stdout]     |
[INFO] [stdout] 607 |     fn assert_is_black(gc: &GcEnv, o: Gc<Mark>) {
[INFO] [stdout]     |                                          ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:613:41
[INFO] [stdout]     |
[INFO] [stdout] 613 |     fn assert_is_grey(gc: &GcEnv, o: Gc<Mark>) {
[INFO] [stdout]     |                                         ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:618:42
[INFO] [stdout]     |
[INFO] [stdout] 618 |     fn assert_released(gc: &GcEnv, o: Gc<Mark>) {
[INFO] [stdout]     |                                          ^^^^ help: use `dyn`: `dyn Mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `dealloc` found for struct `std::alloc::Global` in the current scope
[INFO] [stdout]   --> src/lib.rs:93:34
[INFO] [stdout]    |
[INFO] [stdout] 93 |             alloc::alloc::Global.dealloc(
[INFO] [stdout]    |                                  ^^^^^^^ method not found in `std::alloc::Global`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::alloc::AllocRef;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `dealloc` found for struct `std::alloc::Global` in the current scope
[INFO] [stdout]   --> src/lib.rs:93:34
[INFO] [stdout]    |
[INFO] [stdout] 93 |             alloc::alloc::Global.dealloc(
[INFO] [stdout]    |                                  ^^^^^^^ method not found in `std::alloc::Global`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::alloc::AllocRef;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors; 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gc3c`
[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 6 previous errors; 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0aac9d91b215ab6e88798c12391ac4082372ce1bbabc35d8580dbd051f42ba02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0aac9d91b215ab6e88798c12391ac4082372ce1bbabc35d8580dbd051f42ba02", kill_on_drop: false }`
[INFO] [stdout] 0aac9d91b215ab6e88798c12391ac4082372ce1bbabc35d8580dbd051f42ba02