[INFO] fetching crate flo_render_canvas 0.3.1...
[INFO] testing flo_render_canvas-0.3.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate flo_render_canvas 0.3.1 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate flo_render_canvas 0.3.1
[INFO] finished tweaking crates.io crate flo_render_canvas 0.3.1
[INFO] tweaked toml for crates.io crate flo_render_canvas 0.3.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate flo_render_canvas 0.3.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate flo_render_canvas 0.3.1 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lyon_algorithms v0.17.7
[INFO] [stderr]   Downloaded float_next_after v0.1.5
[INFO] [stderr]   Downloaded lyon v0.17.10
[INFO] [stderr]   Downloaded lyon_geom v0.17.7
[INFO] [stderr]   Downloaded inflate v0.3.4
[INFO] [stderr]   Downloaded lyon_path v0.17.7
[INFO] [stderr]   Downloaded sid v0.6.1
[INFO] [stderr]   Downloaded png v0.11.0
[INFO] [stderr]   Downloaded futures-macro v0.3.26
[INFO] [stderr]   Downloaded futures-executor v0.3.26
[INFO] [stderr]   Downloaded desync v0.7.2
[INFO] [stderr]   Downloaded flo_render v0.3.1
[INFO] [stderr]   Downloaded roots v0.0.7
[INFO] [stderr]   Downloaded futures v0.3.26
[INFO] [stderr]   Downloaded serde v1.0.154
[INFO] [stderr]   Downloaded serde_derive v1.0.154
[INFO] [stderr]   Downloaded deflate v0.7.20
[INFO] [stderr]   Downloaded flo_stream v0.6.0
[INFO] [stderr]   Downloaded futures-channel v0.3.26
[INFO] [stderr]   Downloaded lyon_tessellation v0.17.10
[INFO] [stderr]   Downloaded flo_canvas v0.3.1
[INFO] [stderr]   Downloaded flo_curves v0.6.1
[INFO] [stderr]   Downloaded rust-hsluv v0.1.4
[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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41964d8f06fe6b086a4b2df9d246307b3e19c9969b481ab13596897d8aa11f8e
[INFO] running `Command { std: "docker" "start" "-a" "41964d8f06fe6b086a4b2df9d246307b3e19c9969b481ab13596897d8aa11f8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41964d8f06fe6b086a4b2df9d246307b3e19c9969b481ab13596897d8aa11f8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41964d8f06fe6b086a4b2df9d246307b3e19c9969b481ab13596897d8aa11f8e", kill_on_drop: false }`
[INFO] [stdout] 41964d8f06fe6b086a4b2df9d246307b3e19c9969b481ab13596897d8aa11f8e
[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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8d0de70650277f90c9626e688502846838741189cd067cb4f8793d6a2692c5c
[INFO] running `Command { std: "docker" "start" "-a" "e8d0de70650277f90c9626e688502846838741189cd067cb4f8793d6a2692c5c", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling futures-core v0.3.26
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling futures-channel v0.3.26
[INFO] [stderr]    Compiling futures-task v0.3.26
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling futures-sink v0.3.26
[INFO] [stderr]    Compiling futures-util v0.3.26
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling futures-io v0.3.26
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling termcolor v1.2.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.51/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 either v1.8.1
[INFO] [stderr]    Compiling serde_derive v1.0.154
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling serde v1.0.154
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling roots v0.0.7
[INFO] [stderr]    Compiling rust-hsluv v0.1.4
[INFO] [stderr]    Compiling libloading v0.5.2
[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 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e8d0de70650277f90c9626e688502846838741189cd067cb4f8793d6a2692c5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8d0de70650277f90c9626e688502846838741189cd067cb4f8793d6a2692c5c", kill_on_drop: false }`
[INFO] [stdout] e8d0de70650277f90c9626e688502846838741189cd067cb4f8793d6a2692c5c