[INFO] fetching crate mjb_gc 0.2.0...
[INFO] documenting mjb_gc-0.2.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate mjb_gc 0.2.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate mjb_gc 0.2.0 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 mjb_gc 0.2.0
[INFO] finished tweaking crates.io crate mjb_gc 0.2.0
[INFO] tweaked toml for crates.io crate mjb_gc 0.2.0 written to /workspace/builds/worker-5-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]     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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mjb_gc_derive v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] a86ad2b70ce602b3c6dee0b9c4febfb11ef3bad937f73ed3bab4983b796b4080
[INFO] running `Command { std: "docker" "start" "-a" "a86ad2b70ce602b3c6dee0b9c4febfb11ef3bad937f73ed3bab4983b796b4080", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a86ad2b70ce602b3c6dee0b9c4febfb11ef3bad937f73ed3bab4983b796b4080", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a86ad2b70ce602b3c6dee0b9c4febfb11ef3bad937f73ed3bab4983b796b4080", kill_on_drop: false }`
[INFO] [stdout] a86ad2b70ce602b3c6dee0b9c4febfb11ef3bad937f73ed3bab4983b796b4080
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 3f0c2d38acf97d73291115057e9bb9e8367b68892169c0c161c73ba1a57331cf
[INFO] running `Command { std: "docker" "start" "-a" "3f0c2d38acf97d73291115057e9bb9e8367b68892169c0c161c73ba1a57331cf", kill_on_drop: false }`
[INFO] [stderr]  Documenting mjb_gc v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/lib.rs:107:23
[INFO] [stdout]     |
[INFO] [stdout] 107 |               Box::leak(box GcInner {
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 108 | |                 ref_count: Cell::new(1),
[INFO] [stdout] 109 | |                 internal_ref_count: Cell::new(0),
[INFO] [stdout] 110 | |                 done: Cell::new(false),
[INFO] [stdout] 111 | |                 dropped: Cell::new(false),
[INFO] [stdout] 112 | |                 value: MaybeUninit::new(value),
[INFO] [stdout] 113 | |             })
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 107 ~             Box::leak(Box::new(GcInner {
[INFO] [stdout] 108 +                 ref_count: Cell::new(1),
[INFO] [stdout] 109 +                 internal_ref_count: Cell::new(0),
[INFO] [stdout] 110 +                 done: Cell::new(false),
[INFO] [stdout] 111 +                 dropped: Cell::new(false),
[INFO] [stdout] 112 +                 value: MaybeUninit::new(value),
[INFO] [stdout] 113 ~             }))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/lib.rs:160:23
[INFO] [stdout]     |
[INFO] [stdout] 160 |               Box::leak(box GcInner {
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 161 | |                 ref_count: Cell::new(1),
[INFO] [stdout] 162 | |                 internal_ref_count: Cell::new(0),
[INFO] [stdout] 163 | |                 done: Cell::new(false),
[INFO] [stdout] 164 | |                 dropped: Cell::new(true),
[INFO] [stdout] 165 | |                 value: MaybeUninit::<T>::uninit(),
[INFO] [stdout] 166 | |             })
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 160 ~             Box::leak(Box::new(GcInner {
[INFO] [stdout] 161 +                 ref_count: Cell::new(1),
[INFO] [stdout] 162 +                 internal_ref_count: Cell::new(0),
[INFO] [stdout] 163 +                 done: Cell::new(false),
[INFO] [stdout] 164 +                 dropped: Cell::new(true),
[INFO] [stdout] 165 +                 value: MaybeUninit::<T>::uninit(),
[INFO] [stdout] 166 ~             }))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![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 4 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 `mjb_gc`
[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 mjb_gc src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=07303071fcf1c4c1 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "3f0c2d38acf97d73291115057e9bb9e8367b68892169c0c161c73ba1a57331cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f0c2d38acf97d73291115057e9bb9e8367b68892169c0c161c73ba1a57331cf", kill_on_drop: false }`
[INFO] [stdout] 3f0c2d38acf97d73291115057e9bb9e8367b68892169c0c161c73ba1a57331cf
[INFO] documenting mjb_gc-0.2.0 against beta-2023-12-22 for beta-1.76-rustdoc-1
[INFO] extracting crate mjb_gc 0.2.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate mjb_gc 0.2.0 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mjb_gc 0.2.0
[INFO] finished tweaking crates.io crate mjb_gc 0.2.0
[INFO] tweaked toml for crates.io crate mjb_gc 0.2.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c1b2857f8b7408a25212ae8b5934828f8926992e5aeea877240e0982d03a9ab8
[INFO] running `Command { std: "docker" "start" "-a" "c1b2857f8b7408a25212ae8b5934828f8926992e5aeea877240e0982d03a9ab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1b2857f8b7408a25212ae8b5934828f8926992e5aeea877240e0982d03a9ab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1b2857f8b7408a25212ae8b5934828f8926992e5aeea877240e0982d03a9ab8", kill_on_drop: false }`
[INFO] [stdout] c1b2857f8b7408a25212ae8b5934828f8926992e5aeea877240e0982d03a9ab8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+beta-2023-12-22" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54b130d83183881fc1e477a1779455683e6ebee35bd55868be7cdd2056430f12
[INFO] running `Command { std: "docker" "start" "-a" "54b130d83183881fc1e477a1779455683e6ebee35bd55868be7cdd2056430f12", kill_on_drop: false }`
[INFO] [stderr]  Documenting mjb_gc v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/lib.rs:107:23
[INFO] [stdout]     |
[INFO] [stdout] 107 |               Box::leak(box GcInner {
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 108 | |                 ref_count: Cell::new(1),
[INFO] [stdout] 109 | |                 internal_ref_count: Cell::new(0),
[INFO] [stdout] 110 | |                 done: Cell::new(false),
[INFO] [stdout] 111 | |                 dropped: Cell::new(false),
[INFO] [stdout] 112 | |                 value: MaybeUninit::new(value),
[INFO] [stdout] 113 | |             })
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 107 ~             Box::leak(Box::new(GcInner {
[INFO] [stdout] 108 +                 ref_count: Cell::new(1),
[INFO] [stdout] 109 +                 internal_ref_count: Cell::new(0),
[INFO] [stdout] 110 +                 done: Cell::new(false),
[INFO] [stdout] 111 +                 dropped: Cell::new(false),
[INFO] [stdout] 112 +                 value: MaybeUninit::new(value),
[INFO] [stdout] 113 ~             }))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/lib.rs:160:23
[INFO] [stdout]     |
[INFO] [stdout] 160 |               Box::leak(box GcInner {
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 161 | |                 ref_count: Cell::new(1),
[INFO] [stdout] 162 | |                 internal_ref_count: Cell::new(0),
[INFO] [stdout] 163 | |                 done: Cell::new(false),
[INFO] [stdout] 164 | |                 dropped: Cell::new(true),
[INFO] [stdout] 165 | |                 value: MaybeUninit::<T>::uninit(),
[INFO] [stdout] 166 | |             })
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 160 ~             Box::leak(Box::new(GcInner {
[INFO] [stdout] 161 +                 ref_count: Cell::new(1),
[INFO] [stdout] 162 +                 internal_ref_count: Cell::new(0),
[INFO] [stdout] 163 +                 done: Cell::new(false),
[INFO] [stdout] 164 +                 dropped: Cell::new(true),
[INFO] [stdout] 165 +                 value: MaybeUninit::<T>::uninit(),
[INFO] [stdout] 166 ~             }))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![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 4 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 `mjb_gc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2023-12-22-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2018 --crate-type lib --crate-name mjb_gc src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f97cc2ac347dca97 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "54b130d83183881fc1e477a1779455683e6ebee35bd55868be7cdd2056430f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54b130d83183881fc1e477a1779455683e6ebee35bd55868be7cdd2056430f12", kill_on_drop: false }`
[INFO] [stdout] 54b130d83183881fc1e477a1779455683e6ebee35bd55868be7cdd2056430f12
