[INFO] fetching crate druid-widget-nursery 0.1.0...
[INFO] checking druid-widget-nursery-0.1.0 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate druid-widget-nursery 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate druid-widget-nursery 0.1.0 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 druid-widget-nursery 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate druid-widget-nursery 0.1.0
[INFO] tweaked toml for crates.io crate druid-widget-nursery 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate druid-widget-nursery 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-macro v0.3.26
[INFO] [stderr]   Downloaded notify v5.1.0
[INFO] [stderr]   Downloaded filetime v0.2.19
[INFO] [stderr]   Downloaded druid-widget-nursery-derive v0.1.0
[INFO] [stderr]   Downloaded qu-derive v0.3.4
[INFO] [stderr]   Downloaded qu v0.5.1
[INFO] [stderr]   Downloaded gtk3-macros v0.16.0
[INFO] [stderr]   Downloaded pangocairo-sys v0.16.3
[INFO] [stderr]   Downloaded proc-macro-crate v1.3.0
[INFO] [stderr]   Downloaded gobject-sys v0.16.3
[INFO] [stderr]   Downloaded piet-web v0.6.2
[INFO] [stderr]   Downloaded cairo-sys-rs v0.16.3
[INFO] [stderr]   Downloaded unic-bidi v0.9.0
[INFO] [stderr]   Downloaded atk v0.16.0
[INFO] [stderr]   Downloaded fluent-syntax v0.11.0
[INFO] [stderr]   Downloaded field-offset v0.3.4
[INFO] [stderr]   Downloaded druid-derive v0.5.0
[INFO] [stderr]   Downloaded cairo-rs v0.16.7
[INFO] [stderr]   Downloaded glib-macros v0.16.3
[INFO] [stderr]   Downloaded glib-sys v0.16.3
[INFO] [stderr]   Downloaded gio-sys v0.16.3
[INFO] [stderr]   Downloaded gio v0.16.7
[INFO] [stderr]   Downloaded pest v2.5.4
[INFO] [stderr]   Downloaded druid-shell v0.8.0
[INFO] [stderr]   Downloaded gtk-sys v0.16.0
[INFO] [stderr]   Downloaded glib v0.16.7
[INFO] [stderr]   Downloaded druid-material-icons v0.2.0
[INFO] [stderr]   Downloaded pango v0.16.5
[INFO] [stderr]   Downloaded pango-sys v0.16.3
[INFO] [stderr]   Downloaded piet v0.6.2
[INFO] [stderr]   Downloaded druid v0.8.2
[INFO] [stderr]   Downloaded pangocairo v0.16.3
[INFO] [stderr]   Downloaded piet-coregraphics v0.6.2
[INFO] [stderr]   Downloaded gdk-pixbuf v0.16.7
[INFO] [stderr]   Downloaded gdk-pixbuf-sys v0.16.3
[INFO] [stderr]   Downloaded gtk v0.16.2
[INFO] [stderr]   Downloaded core-text v19.2.0
[INFO] [stderr]   Downloaded unic-ucd-bidi v0.9.0
[INFO] [stderr]   Downloaded type-map v0.4.0
[INFO] [stderr]   Downloaded self_cell v0.10.2
[INFO] [stderr]   Downloaded tinystr v0.7.1
[INFO] [stderr]   Downloaded unic-langid v0.9.1
[INFO] [stderr]   Downloaded gdk v0.16.2
[INFO] [stderr]   Downloaded gdk-sys v0.16.0
[INFO] [stderr]   Downloaded utf16_lit v2.0.2
[INFO] [stderr]   Downloaded unic-langid-impl v0.9.1
[INFO] [stderr]   Downloaded piet-common v0.6.2
[INFO] [stderr]   Downloaded atk-sys v0.16.0
[INFO] [stderr]   Downloaded keyboard-types v0.6.2
[INFO] [stderr]   Downloaded piet-cairo v0.6.2
[INFO] [stderr]   Downloaded associative-cache v1.0.1
[INFO] [stderr]   Downloaded piet-direct2d v0.6.2
[INFO] [stderr]   Downloaded fluent-bundle v0.15.2
[INFO] [stderr]   Downloaded kurbo v0.9.0
[INFO] [stderr]   Downloaded intl-memoizer v0.5.1
[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] 05d669b9cc93bb545410b51d9e6c9bfcdbf35919569442a31e514ba9b1534e5c
[INFO] running `Command { std: "docker" "start" "-a" "05d669b9cc93bb545410b51d9e6c9bfcdbf35919569442a31e514ba9b1534e5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05d669b9cc93bb545410b51d9e6c9bfcdbf35919569442a31e514ba9b1534e5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05d669b9cc93bb545410b51d9e6c9bfcdbf35919569442a31e514ba9b1534e5c", kill_on_drop: false }`
[INFO] [stdout] 05d669b9cc93bb545410b51d9e6c9bfcdbf35919569442a31e514ba9b1534e5c
[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] e5f14dfe9567eb11aa2055163261db8d08ad35fcc4175a324265f18b3cb7b596
[INFO] running `Command { std: "docker" "start" "-a" "e5f14dfe9567eb11aa2055163261db8d08ad35fcc4175a324265f18b3cb7b596", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling cfg-expr v0.11.0
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling thiserror v1.0.38
[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 memchr v2.5.0
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[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" "e5f14dfe9567eb11aa2055163261db8d08ad35fcc4175a324265f18b3cb7b596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5f14dfe9567eb11aa2055163261db8d08ad35fcc4175a324265f18b3cb7b596", kill_on_drop: false }`
[INFO] [stdout] e5f14dfe9567eb11aa2055163261db8d08ad35fcc4175a324265f18b3cb7b596