[INFO] fetching crate concgc 0.1.1...
[INFO] documenting concgc-0.1.1 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate concgc 0.1.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate concgc 0.1.1 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate concgc 0.1.1
[INFO] finished tweaking crates.io crate concgc 0.1.1
[INFO] tweaked toml for crates.io crate concgc 0.1.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hashbrown v0.7.2
[INFO] [stderr]   Downloaded derive_deref v1.1.1
[INFO] [stderr]   Downloaded ahash v0.3.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fdb7f93204c82880f3e0271a80df7d07b186a249fddd70310db327db1e8aba64
[INFO] running `Command { std: "docker" "start" "-a" "fdb7f93204c82880f3e0271a80df7d07b186a249fddd70310db327db1e8aba64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fdb7f93204c82880f3e0271a80df7d07b186a249fddd70310db327db1e8aba64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdb7f93204c82880f3e0271a80df7d07b186a249fddd70310db327db1e8aba64", kill_on_drop: false }`
[INFO] [stdout] fdb7f93204c82880f3e0271a80df7d07b186a249fddd70310db327db1e8aba64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a3427c6a70192d3a5b64abee810183e60b4e097953509ac5862500442f66d4f
[INFO] running `Command { std: "docker" "start" "-a" "1a3427c6a70192d3a5b64abee810183e60b4e097953509ac5862500442f66d4f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling derive_deref v1.1.1
[INFO] [stderr]  Documenting concgc v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/lib.rs:194:13
[INFO] [stdout]     |
[INFO] [stdout] 194 |             box *self
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 194 |             Box::new(*self)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/lib.rs:197:13
[INFO] [stdout]     |
[INFO] [stdout] 197 |             box *self
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 197 |             Box::new(*self)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/lib.rs:250:58
[INFO] [stdout]     |
[INFO] [stdout] 250 |                 space: Mutex::new(Box::into_raw_non_null(box AutoGcSpace::new())),
[INFO] [stdout]     |                                                          ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 250 |                 space: Mutex::new(Box::into_raw_non_null(Box::new(AutoGcSpace::new()))),
[INFO] [stdout]     |                                                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/lib.rs:249:46
[INFO] [stdout]     |
[INFO] [stdout] 249 |               let ptr = Box::into_raw_non_null(box GcInner {
[INFO] [stdout]     |  ______________________________________________^
[INFO] [stdout] 250 | |                 space: Mutex::new(Box::into_raw_non_null(box AutoGcSpace::new())),
[INFO] [stdout] 251 | |                 data: x,
[INFO] [stdout] 252 | |             });
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 249 ~             let ptr = Box::into_raw_non_null(Box::new(GcInner {
[INFO] [stdout] 250 +                 space: Mutex::new(Box::into_raw_non_null(box AutoGcSpace::new())),
[INFO] [stdout] 251 +                 data: x,
[INFO] [stdout] 252 ~             }));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/lib.rs:498:53
[INFO] [stdout]     |
[INFO] [stdout] 498 |   ...                   let mut tracer = Tracer(box |v: Box<dyn AnyGc>| {
[INFO] [stdout]     |  _______________________________________________^
[INFO] [stdout] 499 | | ...                       let hashable_v = HashableAnyGc(v.clone_as_any());
[INFO] [stdout] 500 | | ...                       if !marked.contains(&hashable_v) {
[INFO] [stdout] 501 | | ...                           to_mark_set.insert(hashable_v);
[INFO] [stdout] 502 | | ...                       }
[INFO] [stdout] 503 | | ...                   });
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 498 ~                             let mut tracer = Tracer(Box::new(|v: Box<dyn AnyGc>| {
[INFO] [stdout] 499 +                                 let hashable_v = HashableAnyGc(v.clone_as_any());
[INFO] [stdout] 500 +                                 if !marked.contains(&hashable_v) {
[INFO] [stdout] 501 +                                     to_mark_set.insert(hashable_v);
[INFO] [stdout] 502 +                                 }
[INFO] [stdout] 503 ~                             }));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/lib.rs:583:13
[INFO] [stdout]     |
[INFO] [stdout] 583 | /             box Root {
[INFO] [stdout] 584 | |                 ptr: self.ptr,
[INFO] [stdout] 585 | |                 phantom: PhantomData,
[INFO] [stdout] 586 | |             }
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 583 ~             Box::new(Root {
[INFO] [stdout] 584 +                 ptr: self.ptr,
[INFO] [stdout] 585 +                 phantom: PhantomData,
[INFO] [stdout] 586 +             })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/lib.rs:589:13
[INFO] [stdout]     |
[INFO] [stdout] 589 | /             box Root {
[INFO] [stdout] 590 | |                 ptr: self.ptr,
[INFO] [stdout] 591 | |                 phantom: PhantomData,
[INFO] [stdout] 592 | |             }
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 589 ~             Box::new(Root {
[INFO] [stdout] 590 +                 ptr: self.ptr,
[INFO] [stdout] 591 +                 phantom: PhantomData,
[INFO] [stdout] 592 +             })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/lib.rs:638:58
[INFO] [stdout]     |
[INFO] [stdout] 638 |                 space: Mutex::new(Box::into_raw_non_null(box AutoGcSpace::new())),
[INFO] [stdout]     |                                                          ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 638 |                 space: Mutex::new(Box::into_raw_non_null(Box::new(AutoGcSpace::new()))),
[INFO] [stdout]     |                                                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/lib.rs:637:46
[INFO] [stdout]     |
[INFO] [stdout] 637 |               let ptr = Box::into_raw_non_null(box RootInner {
[INFO] [stdout]     |  ______________________________________________^
[INFO] [stdout] 638 | |                 space: Mutex::new(Box::into_raw_non_null(box AutoGcSpace::new())),
[INFO] [stdout] 639 | |                 data: x,
[INFO] [stdout] 640 | |             });
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 637 ~             let ptr = Box::into_raw_non_null(Box::new(RootInner {
[INFO] [stdout] 638 +                 space: Mutex::new(Box::into_raw_non_null(box AutoGcSpace::new())),
[INFO] [stdout] 639 +                 data: x,
[INFO] [stdout] 640 ~             }));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(box_syntax)]
[INFO] [stdout]   |            ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 11 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `concgc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2018 --crate-type lib --crate-name concgc src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=5d342dfbabd99235 -L dependency=/opt/rustwide/target/debug/deps --extern derive_deref=/opt/rustwide/target/debug/deps/libderive_deref-488de88262ffb14f.so --extern hashbrown=/opt/rustwide/target/debug/deps/libhashbrown-2331ab27b33f806f.rmeta --extern spin=/opt/rustwide/target/debug/deps/libspin-49697cc1536a8d2b.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "1a3427c6a70192d3a5b64abee810183e60b4e097953509ac5862500442f66d4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a3427c6a70192d3a5b64abee810183e60b4e097953509ac5862500442f66d4f", kill_on_drop: false }`
[INFO] [stdout] 1a3427c6a70192d3a5b64abee810183e60b4e097953509ac5862500442f66d4f
