[INFO] fetching crate mech-syntax 0.1.0...
[INFO] documenting mech-syntax-0.1.0 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate mech-syntax 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate mech-syntax 0.1.0 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mech-syntax 0.1.0
[INFO] finished tweaking crates.io crate mech-syntax 0.1.0
[INFO] tweaked toml for crates.io crate mech-syntax 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate mech-syntax 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tower-lsp v0.17.0
[INFO] [stderr]   Downloaded tower-lsp-macros v0.6.0
[INFO] [stderr]   Downloaded rlibc v1.0.0
[INFO] [stderr]   Downloaded nom-unicode v0.3.0
[INFO] [stderr]   Downloaded time v0.3.17
[INFO] [stderr]   Downloaded parking_lot_core v0.9.5
[INFO] [stderr]   Downloaded hashbrown v0.13.1
[INFO] [stderr]   Downloaded mech-core v0.1.0
[INFO] [stderr]   Downloaded tokio v1.23.0
[INFO] [stderr]   Downloaded unicode-segmentation v1.10.0
[INFO] [stderr]   Downloaded nom v7.1.2
[INFO] [stderr]   Downloaded async-trait v0.1.60
[INFO] [stderr]   Downloaded lsp-types v0.93.2
[INFO] [stderr]   Downloaded auto_impl v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7465b299c7e81659cbbfae0eb75fa2b54420db28ccaa171862dcae5be88510d
[INFO] running `Command { std: "docker" "start" "-a" "f7465b299c7e81659cbbfae0eb75fa2b54420db28ccaa171862dcae5be88510d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7465b299c7e81659cbbfae0eb75fa2b54420db28ccaa171862dcae5be88510d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7465b299c7e81659cbbfae0eb75fa2b54420db28ccaa171862dcae5be88510d", kill_on_drop: false }`
[INFO] [stdout] f7465b299c7e81659cbbfae0eb75fa2b54420db28ccaa171862dcae5be88510d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a730b1153437f7634f457e244b454e3d12937bb52cc437508cb257d11c92862
[INFO] running `Command { std: "docker" "start" "-a" "4a730b1153437f7634f457e244b454e3d12937bb52cc437508cb257d11c92862", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling ahash v0.8.2
[INFO] [stderr]     Checking once_cell v1.17.0
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking time-core v0.1.0
[INFO] [stderr]     Checking nom v7.1.2
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking unicode-segmentation v1.10.0
[INFO] [stderr]     Checking time v0.3.17
[INFO] [stderr]     Checking hashbrown v0.13.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking rayon v1.6.1
[INFO] [stderr]     Checking nom-unicode v0.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]     Checking mech-core v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mech-core-0.1.0/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(get_mut_unchecked)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mech-core-0.1.0/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(concat_idents)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mech-core-0.1.0/src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(iter_intersperse)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mech-core-0.1.0/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `drain_filter`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mech-core-0.1.0/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `drain_filter` found for struct `Vec<std::rc::Rc<std::cell::RefCell<block::Block>>>` in the current scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mech-core-0.1.0/src/schedule.rs:41:63
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let ready_blocks: Vec<BlockRef> = self.unscheduled_blocks.drain_filter(|b| b.borrow().state == BlockState::Ready).collect();
[INFO] [stdout]    |                                                               ^^^^^^^^^^^^ method not found in `Vec<Rc<RefCell<Block>>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mech-core` (lib) due to 7 previous errors
[INFO] running `Command { std: "docker" "inspect" "4a730b1153437f7634f457e244b454e3d12937bb52cc437508cb257d11c92862", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a730b1153437f7634f457e244b454e3d12937bb52cc437508cb257d11c92862", kill_on_drop: false }`
[INFO] [stdout] 4a730b1153437f7634f457e244b454e3d12937bb52cc437508cb257d11c92862
[INFO] documenting mech-syntax-0.1.0 against beta-2024-02-10 for beta-1.77-rustdoc-1
[INFO] extracting crate mech-syntax 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate mech-syntax 0.1.0 on toolchain beta-2024-02-10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mech-syntax 0.1.0
[INFO] finished tweaking crates.io crate mech-syntax 0.1.0
[INFO] tweaked toml for crates.io crate mech-syntax 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate mech-syntax 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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-2024-02-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97fcb83120323b6fc7c7f7681f4eb973f87cf9fabaa6dc7fa628d73beba0a6d6
[INFO] running `Command { std: "docker" "start" "-a" "97fcb83120323b6fc7c7f7681f4eb973f87cf9fabaa6dc7fa628d73beba0a6d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97fcb83120323b6fc7c7f7681f4eb973f87cf9fabaa6dc7fa628d73beba0a6d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97fcb83120323b6fc7c7f7681f4eb973f87cf9fabaa6dc7fa628d73beba0a6d6", kill_on_drop: false }`
[INFO] [stdout] 97fcb83120323b6fc7c7f7681f4eb973f87cf9fabaa6dc7fa628d73beba0a6d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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-2024-02-10" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66761667036b3449b82eab3d1c78beb21e812c819077de0b3b2e1d731d279880
[INFO] running `Command { std: "docker" "start" "-a" "66761667036b3449b82eab3d1c78beb21e812c819077de0b3b2e1d731d279880", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling ahash v0.8.2
[INFO] [stderr]     Checking once_cell v1.17.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking time-core v0.1.0
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]     Checking nom v7.1.2
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking unicode-segmentation v1.10.0
[INFO] [stderr]     Checking time v0.3.17
[INFO] [stderr]     Checking hashbrown v0.13.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking rayon v1.6.1
[INFO] [stderr]     Checking nom-unicode v0.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]     Checking mech-core v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mech-core-0.1.0/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(get_mut_unchecked)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mech-core-0.1.0/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(concat_idents)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mech-core-0.1.0/src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(iter_intersperse)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mech-core-0.1.0/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `drain_filter`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mech-core-0.1.0/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `drain_filter` found for struct `Vec<std::rc::Rc<std::cell::RefCell<block::Block>>>` in the current scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mech-core-0.1.0/src/schedule.rs:41:63
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let ready_blocks: Vec<BlockRef> = self.unscheduled_blocks.drain_filter(|b| b.borrow().state == BlockState::Ready).collect();
[INFO] [stdout]    |                                                               ^^^^^^^^^^^^ method not found in `Vec<Rc<RefCell<Block>>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mech-core` (lib) due to 7 previous errors
[INFO] running `Command { std: "docker" "inspect" "66761667036b3449b82eab3d1c78beb21e812c819077de0b3b2e1d731d279880", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66761667036b3449b82eab3d1c78beb21e812c819077de0b3b2e1d731d279880", kill_on_drop: false }`
[INFO] [stdout] 66761667036b3449b82eab3d1c78beb21e812c819077de0b3b2e1d731d279880
