[INFO] fetching crate cairo-svgpath 0.1.1...
[INFO] checking cairo-svgpath-0.1.1 against beta for pr-78714
[INFO] extracting crate cairo-svgpath 0.1.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate cairo-svgpath 0.1.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", 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-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf25d7aa1eabae852dda858a8e52bb6791b7a72feb4fee4167f931280706c52f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cf25d7aa1eabae852dda858a8e52bb6791b7a72feb4fee4167f931280706c52f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf25d7aa1eabae852dda858a8e52bb6791b7a72feb4fee4167f931280706c52f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf25d7aa1eabae852dda858a8e52bb6791b7a72feb4fee4167f931280706c52f", kill_on_drop: false }`
[INFO] [stdout] cf25d7aa1eabae852dda858a8e52bb6791b7a72feb4fee4167f931280706c52f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3111fdba37e2553ee12fc2d62f780869da164f2d79afaf28409650685f704f5a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3111fdba37e2553ee12fc2d62f780869da164f2d79afaf28409650685f704f5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking siphasher v0.2.3
[INFO] [stderr]     Checking float-cmp v0.5.3
[INFO] [stderr]     Checking proc-macro2 v0.4.30
[INFO] [stderr]     Checking phf_shared v0.7.24
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]     Checking svgtypes v0.4.4
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]    Compiling euclid_macros v0.1.0
[INFO] [stderr]     Checking euclid v0.19.9
[INFO] [stderr]     Checking lyon_geom v0.12.7
[INFO] [stderr]     Checking cairo-svgpath v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta 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[E0554]: `#![feature]` may not be used on the beta 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] [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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3111fdba37e2553ee12fc2d62f780869da164f2d79afaf28409650685f704f5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3111fdba37e2553ee12fc2d62f780869da164f2d79afaf28409650685f704f5a", kill_on_drop: false }`
[INFO] [stdout] 3111fdba37e2553ee12fc2d62f780869da164f2d79afaf28409650685f704f5a