[INFO] fetching crate amnion 0.1.0...
[INFO] checking amnion-0.1.0 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate amnion 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate amnion 0.1.0 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate amnion 0.1.0
[INFO] finished tweaking crates.io crate amnion 0.1.0
[INFO] tweaked toml for crates.io crate amnion 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate amnion 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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.74
[INFO] [stderr]   Downloaded cocoa-foundation v0.1.0
[INFO] [stderr]   Downloaded wfd v0.1.7
[INFO] [stderr]   Downloaded amnion-backend v0.1.0
[INFO] [stderr]   Downloaded which v4.3.0
[INFO] [stderr]   Downloaded native-dialog v0.6.3
[INFO] [stderr]   Downloaded rustversion v1.0.9
[INFO] [stderr]   Downloaded scratch v1.0.2
[INFO] [stderr]   Downloaded urlencoding v2.1.2
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[INFO] [stderr]   Downloaded window_clipboard v0.2.3
[INFO] [stderr]   Downloaded ordered-float v3.3.0
[INFO] [stderr]   Downloaded mutate_once v0.1.1
[INFO] [stderr]   Downloaded gpu-descriptor-types v0.1.1
[INFO] [stderr]   Downloaded amnion-frontend v0.1.0
[INFO] [stderr]   Downloaded cxx-build v1.0.80
[INFO] [stderr]   Downloaded gpu-descriptor v0.2.3
[INFO] [stderr]   Downloaded anyhow v1.0.66
[INFO] [stderr]   Downloaded owned_ttf_parser v0.17.0
[INFO] [stderr]   Downloaded libc v0.2.137
[INFO] [stderr]   Downloaded ash v0.34.0+1.2.203
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[INFO] [stderr]   Downloaded wgpu-hal v0.12.5
[INFO] [stderr]   Downloaded wgpu v0.12.0
[INFO] [stderr]   Downloaded nix v0.24.2
[INFO] [stderr]   Downloaded webpki-roots v0.22.5
[INFO] [stderr]   Downloaded euclid v0.22.7
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[INFO] [stderr]   Downloaded profiling v1.0.7
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[INFO] [stderr]   Downloaded glam v0.10.2
[INFO] [stderr]   Downloaded cxx v1.0.80
[INFO] [stderr]   Downloaded hyper v0.14.22
[INFO] [stderr]   Downloaded reqwest v0.11.12
[INFO] [stderr]   Downloaded serde_json v1.0.87
[INFO] [stderr]   Downloaded megalodon v0.2.0
[INFO] [stderr]   Downloaded syn v1.0.103
[INFO] [stderr]   Downloaded openssl v0.10.42
[INFO] [stderr]   Downloaded crossbeam-deque v0.8.2
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.12
[INFO] [stderr]   Downloaded ab_glyph v0.2.18
[INFO] [stderr]   Downloaded gpu-alloc v0.5.3
[INFO] [stderr]   Downloaded range-alloc v0.1.2
[INFO] [stderr]   Downloaded renderdoc-sys v0.7.1
[INFO] [stderr]   Downloaded iced_wgpu v0.5.1
[INFO] [stderr]   Downloaded clipboard_macos v0.1.0
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[INFO] [stderr]   Downloaded proc-macro-crate v1.2.1
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[INFO] [stderr]   Downloaded bytemuck_derive v1.3.0
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[INFO] [stderr]   Downloaded futures-executor v0.3.25
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[INFO] [stderr]   Downloaded iced_winit v0.4.0
[INFO] [stderr]   Downloaded futures v0.3.25
[INFO] [stderr]   Downloaded iced_core v0.5.0
[INFO] [stderr]   Downloaded link-cplusplus v1.0.7
[INFO] [stderr]   Downloaded serde_path_to_error v0.1.8
[INFO] [stderr]   Downloaded futures-macro v0.3.25
[INFO] [stderr]   Downloaded bytes v1.2.1
[INFO] [stderr]   Downloaded openssl-sys v0.9.77
[INFO] [stderr]   Downloaded tungstenite v0.17.3
[INFO] [stderr]   Downloaded tokio-macros v1.8.0
[INFO] [stderr]   Downloaded serde_derive v1.0.147
[INFO] [stderr]   Downloaded generic-array v0.14.6
[INFO] [stderr]   Downloaded digest v0.10.5
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.80
[INFO] [stderr]   Downloaded sha1 v0.10.5
[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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f80804567967c426f5b645e761990fc08f91e8b42780cfc89bf6dc2fbdf47baa
[INFO] running `Command { std: "docker" "start" "-a" "f80804567967c426f5b645e761990fc08f91e8b42780cfc89bf6dc2fbdf47baa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f80804567967c426f5b645e761990fc08f91e8b42780cfc89bf6dc2fbdf47baa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f80804567967c426f5b645e761990fc08f91e8b42780cfc89bf6dc2fbdf47baa", kill_on_drop: false }`
[INFO] [stdout] f80804567967c426f5b645e761990fc08f91e8b42780cfc89bf6dc2fbdf47baa
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8ec0451c7813c84f21e0e1be91139b3d20083c682c7ee3048d102b031ca65ed
[INFO] running `Command { std: "docker" "start" "-a" "e8ec0451c7813c84f21e0e1be91139b3d20083c682c7ee3048d102b031ca65ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling cc v1.0.74
[INFO] [stderr]     Checking num-traits v0.2.15
[INFO] [stderr]     Checking libloading v0.7.3
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e8ec0451c7813c84f21e0e1be91139b3d20083c682c7ee3048d102b031ca65ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8ec0451c7813c84f21e0e1be91139b3d20083c682c7ee3048d102b031ca65ed", kill_on_drop: false }`
[INFO] [stdout] e8ec0451c7813c84f21e0e1be91139b3d20083c682c7ee3048d102b031ca65ed
