[INFO] fetching crate piet-svg 0.6.2...
[INFO] checking piet-svg-0.6.2 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate piet-svg 0.6.2 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate piet-svg 0.6.2 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate piet-svg 0.6.2
[INFO] finished tweaking crates.io crate piet-svg 0.6.2
[INFO] tweaked toml for crates.io crate piet-svg 0.6.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate piet-svg 0.6.2 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-ccc v0.1.2
[INFO] [stderr]   Downloaded evcxr_runtime v1.1.0
[INFO] [stderr]   Downloaded svg v0.10.0
[INFO] [stderr]   Downloaded smallvec v1.10.0
[INFO] [stderr]   Downloaded semver v0.11.0
[INFO] [stderr]   Downloaded thiserror-impl v1.0.38
[INFO] [stderr]   Downloaded quote v1.0.23
[INFO] [stderr]   Downloaded getrandom v0.2.8
[INFO] [stderr]   Downloaded font-kit v0.10.1
[INFO] [stderr]   Downloaded cc v1.0.79
[INFO] [stderr]   Downloaded pest v2.5.4
[INFO] [stderr]   Downloaded png v0.17.7
[INFO] [stderr]   Downloaded kurbo v0.9.0
[INFO] [stderr]   Downloaded flate2 v1.0.25
[INFO] [stderr]   Downloaded ttf-parser v0.12.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.50
[INFO] [stderr]   Downloaded syn v1.0.107
[INFO] [stderr]   Downloaded ucd-trie v0.1.5
[INFO] [stderr]   Downloaded miniz_oxide v0.6.2
[INFO] [stderr]   Downloaded image v0.24.5
[INFO] [stderr]   Downloaded bytemuck v1.13.0
[INFO] [stderr]   Downloaded unicode-ident v1.0.6
[INFO] [stderr]   Downloaded pathfinder_simd v0.5.1
[INFO] [stderr]   Downloaded arrayvec v0.7.2
[INFO] [stderr]   Downloaded log v0.4.17
[INFO] [stderr]   Downloaded os_info v3.6.0
[INFO] [stderr]   Downloaded thiserror v1.0.38
[INFO] [stderr]   Downloaded semver-parser v0.10.2
[INFO] [stderr]   Downloaded rustc_version v0.3.3
[INFO] [stderr]   Downloaded pkg-config v0.3.26
[INFO] [stderr]   Downloaded walkdir v2.3.2
[INFO] [stderr]   Downloaded pico-args v0.4.2
[INFO] [stderr]   Downloaded unicode-general-category v0.4.0
[INFO] [stderr]   Downloaded unicode-script v0.5.5
[INFO] [stderr]   Downloaded cmake v0.1.49
[INFO] [stderr]   Downloaded libc v0.2.139
[INFO] [stderr]   Downloaded rustybuzz v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 85696a4f3f06364ab748421bd90a7132f873efd96a53457ea34fce98bca2e445
[INFO] running `Command { std: "docker" "start" "-a" "85696a4f3f06364ab748421bd90a7132f873efd96a53457ea34fce98bca2e445", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "85696a4f3f06364ab748421bd90a7132f873efd96a53457ea34fce98bca2e445", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85696a4f3f06364ab748421bd90a7132f873efd96a53457ea34fce98bca2e445", kill_on_drop: false }`
[INFO] [stdout] 85696a4f3f06364ab748421bd90a7132f873efd96a53457ea34fce98bca2e445
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7672c5628978b4a96e33b991d8391f836c9f38ff65271b7f71cdb0e8acdeee6
[INFO] running `Command { std: "docker" "start" "-a" "b7672c5628978b4a96e33b991d8391f836c9f38ff65271b7f71cdb0e8acdeee6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]    Compiling unicode-general-category v0.4.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.50/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 cmake v0.1.49
[INFO] [stderr]    Compiling servo-fontconfig-sys v5.1.0
[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" "b7672c5628978b4a96e33b991d8391f836c9f38ff65271b7f71cdb0e8acdeee6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7672c5628978b4a96e33b991d8391f836c9f38ff65271b7f71cdb0e8acdeee6", kill_on_drop: false }`
[INFO] [stdout] b7672c5628978b4a96e33b991d8391f836c9f38ff65271b7f71cdb0e8acdeee6