[INFO] fetching crate mech-gui 0.1.0...
[INFO] testing mech-gui-0.1.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate mech-gui 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate mech-gui 0.1.0
[INFO] finished tweaking crates.io crate mech-gui 0.1.0
[INFO] tweaked toml for crates.io crate mech-gui 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mech-gui 0.1.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "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" "+1.91.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 312 packages to latest compatible versions
[INFO] [stderr]       Adding eframe v0.18.0 (available: v0.33.0)
[INFO] [stderr]       Adding image v0.24.9 (available: v0.25.8)
[INFO] [stderr]       Adding mech-core v0.1.0 (available: v0.2.64)
[INFO] [stderr]       Adding mech-syntax v0.1.0 (available: v0.2.64)
[INFO] [stderr]       Adding mech-utilities v0.1.0 (available: v0.2.2)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded websocket-base v0.26.5
[INFO] [stderr]   Downloaded eframe v0.18.0
[INFO] [stderr]   Downloaded arboard v2.1.1
[INFO] [stderr]   Downloaded glutin_egl_sys v0.1.6
[INFO] [stderr]   Downloaded glutin_emscripten_sys v0.1.1
[INFO] [stderr]   Downloaded osmesa-sys v0.1.2
[INFO] [stderr]   Downloaded winres v0.1.12
[INFO] [stderr]   Downloaded wayland-egl v0.29.5
[INFO] [stderr]   Downloaded traitobject v0.1.1
[INFO] [stderr]   Downloaded android_glue v0.2.3
[INFO] [stderr]   Downloaded emath v0.18.0
[INFO] [stderr]   Downloaded glutin_gles2_sys v0.1.5
[INFO] [stderr]   Downloaded egui-winit v0.18.0
[INFO] [stderr]   Downloaded mech-core v0.1.0
[INFO] [stderr]   Downloaded egui v0.18.1
[INFO] [stderr]   Downloaded calloop v0.9.3
[INFO] [stderr]   Downloaded glutin_glx_sys v0.1.8
[INFO] [stderr]   Downloaded websocket v0.26.5
[INFO] [stderr]   Downloaded ndk-glue v0.6.2
[INFO] [stderr]   Downloaded epaint v0.18.1
[INFO] [stderr]   Downloaded smithay-client-toolkit v0.15.4
[INFO] [stderr]   Downloaded shared_library v0.1.9
[INFO] [stderr]   Downloaded nom-unicode v0.3.0
[INFO] [stderr]   Downloaded glutin v0.28.0
[INFO] [stderr]   Downloaded egui_glow v0.18.1
[INFO] [stderr]   Downloaded ndk-glue v0.5.2
[INFO] [stderr]   Downloaded glutin_wgl_sys v0.1.5
[INFO] [stderr]   Downloaded memmap2 v0.3.1
[INFO] [stderr]   Downloaded mech-syntax v0.1.0
[INFO] [stderr]   Downloaded mech-utilities v0.1.0
[INFO] [stderr]   Downloaded webbrowser v0.7.1
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e32568f7121668c05bafa7a9e2946bb190879fa91090173d5125ef609b4d49f
[INFO] running `Command { std: "docker" "start" "-a" "8e32568f7121668c05bafa7a9e2946bb190879fa91090173d5125ef609b4d49f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e32568f7121668c05bafa7a9e2946bb190879fa91090173d5125ef609b4d49f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e32568f7121668c05bafa7a9e2946bb190879fa91090173d5125ef609b4d49f", kill_on_drop: false }`
[INFO] [stdout] 8e32568f7121668c05bafa7a9e2946bb190879fa91090173d5125ef609b4d49f
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fab0b577d6eced470bf4f28df27841a634761101b1ab8b92098be9191fd173a3
[INFO] running `Command { std: "docker" "start" "-a" "fab0b577d6eced470bf4f28df27841a634761101b1ab8b92098be9191fd173a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling xml-rs v0.8.28
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling wayland-sys v0.29.5
[INFO] [stderr]    Compiling dlib v0.5.2
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling bytemuck_derive v1.10.2
[INFO] [stderr]    Compiling ahash v0.7.8
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling generic-array v0.12.4
[INFO] [stderr]    Compiling smithay-client-toolkit v0.15.4
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling instant v0.1.13
[INFO] [stderr]    Compiling ab_glyph_rasterizer v0.1.10
[INFO] [stderr]    Compiling cty v0.2.2
[INFO] [stderr]    Compiling winit v0.26.1
[INFO] [stderr]    Compiling ab_glyph v0.2.32
[INFO] [stderr]    Compiling raw-window-handle v0.4.3
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling deranged v0.5.5
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling safemem v0.3.3
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling hashbrown v0.13.2
[INFO] [stderr]    Compiling sha-1 v0.8.2
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling traitobject v0.1.1
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling seahash v4.1.0
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling glow v0.11.2
[INFO] [stderr]    Compiling colored v2.2.0
[INFO] [stderr]    Compiling nu-ansi-term v0.50.3
[INFO] [stderr]    Compiling wayland-scanner v0.29.5
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling url v2.5.7
[INFO] [stderr]    Compiling flate2 v1.1.5
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling jpeg-decoder v0.3.2
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling tracing-subscriber v0.3.20
[INFO] [stderr]    Compiling png v0.17.16
[INFO] [stderr]    Compiling bytemuck v1.24.0
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.6
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.8
[INFO] [stderr]    Compiling webbrowser v0.7.1
[INFO] [stderr]    Compiling emath v0.18.0
[INFO] [stderr]    Compiling wayland-client v0.29.5
[INFO] [stderr]    Compiling wayland-protocols v0.29.5
[INFO] [stderr]    Compiling time v0.3.44
[INFO] [stderr]    Compiling nix v0.24.3
[INFO] [stderr]    Compiling nix v0.22.3
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling memmap2 v0.3.1
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling gethostname v0.2.3
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling time v0.1.45
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling epaint v0.18.1
[INFO] [stderr]    Compiling num_cpus v1.17.0
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr]    Compiling mech-core v0.1.0
[INFO] [stderr]    Compiling nom-unicode v0.3.0
[INFO] [stderr]    Compiling image v0.24.9
[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 osmesa-sys v0.1.2
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling websocket-base v0.26.5
[INFO] [stderr]    Compiling egui v0.18.1
[INFO] [stderr]    Compiling wayland-commons v0.29.5
[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-1949cf8c6b5b557f/mech-core-0.1.0/src/lib.rs:1:1
[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-1949cf8c6b5b557f/mech-core-0.1.0/src/lib.rs:2:1
[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-1949cf8c6b5b557f/mech-core-0.1.0/src/lib.rs:4:1
[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-1949cf8c6b5b557f/mech-core-0.1.0/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(drain_filter)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling websocket v0.26.5
[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] [stderr]    Compiling calloop v0.9.3
[INFO] [stderr]    Compiling x11rb v0.9.0
[INFO] [stderr]    Compiling wayland-cursor v0.29.5
[INFO] [stderr]    Compiling wayland-egl v0.29.5
[INFO] [stderr]    Compiling egui_glow v0.18.1
[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] [stderr]    Compiling arboard v2.1.1
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557, 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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "fab0b577d6eced470bf4f28df27841a634761101b1ab8b92098be9191fd173a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fab0b577d6eced470bf4f28df27841a634761101b1ab8b92098be9191fd173a3", kill_on_drop: false }`
[INFO] [stdout] fab0b577d6eced470bf4f28df27841a634761101b1ab8b92098be9191fd173a3
