[INFO] fetching crate cairo-svgpath 0.1.1...
[INFO] testing cairo-svgpath-0.1.1 against 1.59.0 for beta-1.60-1
[INFO] extracting crate cairo-svgpath 0.1.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate cairo-svgpath 0.1.1 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cairo-svgpath 0.1.1
[INFO] finished tweaking crates.io crate cairo-svgpath 0.1.1
[INFO] tweaked toml for crates.io crate cairo-svgpath 0.1.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1514f39fcc90f111d495fb2e2aed568035b76c99d3c9087803de36469d64eaba
[INFO] running `Command { std: "docker" "start" "-a" "1514f39fcc90f111d495fb2e2aed568035b76c99d3c9087803de36469d64eaba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1514f39fcc90f111d495fb2e2aed568035b76c99d3c9087803de36469d64eaba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1514f39fcc90f111d495fb2e2aed568035b76c99d3c9087803de36469d64eaba", kill_on_drop: false }`
[INFO] [stdout] 1514f39fcc90f111d495fb2e2aed568035b76c99d3c9087803de36469d64eaba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8082793ee3178d101b347e640adf0b5449874919bfb882b8e80303a146521cae
[INFO] running `Command { std: "docker" "start" "-a" "8082793ee3178d101b347e640adf0b5449874919bfb882b8e80303a146521cae", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling float-cmp v0.5.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling svgtypes v0.4.4
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling euclid_macros v0.1.0
[INFO] [stderr]    Compiling euclid v0.19.9
[INFO] [stderr]    Compiling lyon_geom v0.12.7
[INFO] [stderr]    Compiling cairo-svgpath v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cairo-svgpath` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "8082793ee3178d101b347e640adf0b5449874919bfb882b8e80303a146521cae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8082793ee3178d101b347e640adf0b5449874919bfb882b8e80303a146521cae", kill_on_drop: false }`
[INFO] [stdout] 8082793ee3178d101b347e640adf0b5449874919bfb882b8e80303a146521cae