[INFO] fetching crate mech-html 0.1.0...
[INFO] building mech-html-0.1.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate mech-html 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate mech-html 0.1.0
[INFO] finished tweaking crates.io crate mech-html 0.1.0
[INFO] tweaked toml for crates.io crate mech-html 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mech-html 0.1.0 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 51 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.20.0 (available: v0.22.1)
[INFO] [stderr]       Adding bincode v1.3.3 (available: v2.0.1)
[INFO] [stderr]       Adding hashbrown v0.13.2 (available: v0.16.0)
[INFO] [stderr]       Adding mech-core v0.1.0 (available: v0.2.59)
[INFO] [stderr]       Adding mech-utilities v0.1.0 (available: v0.2.2)
[INFO] [stderr]       Adding miniz_oxide v0.6.2 (available: v0.8.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded base64 v0.20.0
[INFO] [stderr]   Downloaded mech-core v0.1.0
[INFO] [stderr]   Downloaded mech-utilities v0.1.0
[INFO] [stderr]   Downloaded miniz_oxide v0.6.2
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d644db52c94cf7b584d5405fe723b33593d18c1ddaf26b02c9713528dbe7730f
[INFO] running `Command { std: "docker" "start" "-a" "d644db52c94cf7b584d5405fe723b33593d18c1ddaf26b02c9713528dbe7730f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d644db52c94cf7b584d5405fe723b33593d18c1ddaf26b02c9713528dbe7730f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d644db52c94cf7b584d5405fe723b33593d18c1ddaf26b02c9713528dbe7730f", kill_on_drop: false }`
[INFO] [stdout] d644db52c94cf7b584d5405fe723b33593d18c1ddaf26b02c9713528dbe7730f
[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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 868cf83aeefaff57942adb1135b7f5f4da2bb8078964ef57d09e34fe6850f44b
[INFO] running `Command { std: "docker" "start" "-a" "868cf83aeefaff57942adb1135b7f5f4da2bb8078964ef57d09e34fe6850f44b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling seahash v4.1.0
[INFO] [stderr]    Compiling base64 v0.20.0
[INFO] [stderr]    Compiling miniz_oxide v0.6.2
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling hashbrown v0.13.2
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.104
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.104
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.104
[INFO] [stderr]    Compiling wasm-bindgen v0.2.104
[INFO] [stderr]    Compiling mech-core v0.1.0
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/mech-core-0.1.0/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(concat_idents)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in 1.90.0; see <https://github.com/rust-lang/rust/pull/142704> for more information
[INFO] [stdout]   = note: use the `${concat(..)}` metavariable expression instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling js-sys v0.3.81
[INFO] [stdout] error[E0635]: unknown feature `drain_filter`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/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-1949cf8c6b5b557f/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<std::rc::Rc<std::cell::RefCell<block::Block>>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/mech-core-0.1.0/src/schedule.rs:41:77
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let ready_blocks: Vec<BlockRef> = self.unscheduled_blocks.drain_filter(|b| b.borrow().state == BlockState::Ready).collect();
[INFO] [stdout]    |                                                                             ^    ------ type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let ready_blocks: Vec<BlockRef> = self.unscheduled_blocks.drain_filter(|b: /* Type */| b.borrow().state == BlockState::Ready).collect();
[INFO] [stdout]    |                                                                              ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/mech-core-0.1.0/src/schedule.rs:44:49
[INFO] [stdout]    |
[INFO] [stdout] 44 |       let mut graph = BlockGraph::new(block_ref.clone());
[INFO] [stdout]    |                                                 ^^^^^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling web-sys v0.3.81
[INFO] [stderr] error: could not compile `mech-core` (lib) due to 5 previous errors
[INFO] [stdout] Some errors have detailed explanations: E0282, E0557, E0599, E0635.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "868cf83aeefaff57942adb1135b7f5f4da2bb8078964ef57d09e34fe6850f44b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "868cf83aeefaff57942adb1135b7f5f4da2bb8078964ef57d09e34fe6850f44b", kill_on_drop: false }`
[INFO] [stdout] 868cf83aeefaff57942adb1135b7f5f4da2bb8078964ef57d09e34fe6850f44b