[INFO] updating cached repository https://github.com/kevinmehall/webrender-experiments
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7c077ef1f15d87530a28132485783068be9c08ce
[INFO] checking kevinmehall/webrender-experiments against try#7cb06892a23b4da510686618c8730f0b2e8bd952 for pr-66963
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevinmehall%2Fwebrender-experiments" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kevinmehall/webrender-experiments on toolchain 7cb06892a23b4da510686618c8730f0b2e8bd952
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7cb06892a23b4da510686618c8730f0b2e8bd952" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/kevinmehall/webrender-experiments
[INFO] finished tweaking git repo https://github.com/kevinmehall/webrender-experiments
[INFO] tweaked toml for git repo https://github.com/kevinmehall/webrender-experiments written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/kevinmehall/webrender-experiments already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7cb06892a23b4da510686618c8730f0b2e8bd952" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-9/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7cb06892a23b4da510686618c8730f0b2e8bd952" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/servo/webrender`
[INFO] [stderr]     Updating git repository `https://github.com/servo/webrender_traits`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7cb06892a23b4da510686618c8730f0b2e8bd952" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+7cb06892a23b4da510686618c8730f0b2e8bd952" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 71b43a069b0d73f0685e6d67c79416aafea5e1253009e6c1eacd8f2ba482eccc
[INFO] running `"docker" "start" "-a" "71b43a069b0d73f0685e6d67c79416aafea5e1253009e6c1eacd8f2ba482eccc"`
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]    Compiling heapsize v0.3.9
[INFO] [stderr]    Compiling opaque-debug v0.2.3
[INFO] [stderr]     Checking binary-space-partition v0.1.2
[INFO] [stderr]     Checking svg_fmt v0.4.1
[INFO] [stderr]     Checking serde v0.7.15
[INFO] [stderr]    Compiling x11 v2.18.1
[INFO] [stderr]    Compiling block-padding v0.1.5
[INFO] [stderr]    Compiling syn v0.10.8
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]     Checking dylib v0.0.1
[INFO] [stderr]    Compiling gl_generator v0.13.1
[INFO] [stderr]     Checking osmesa-sys v0.0.5
[INFO] [stderr]    Compiling syntex_errors v0.54.0
[INFO] [stderr]    Compiling gl_generator v0.4.2
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking servo-freetype-sys v4.0.5
[INFO] [stderr]     Checking bincode v0.6.1
[INFO] [stderr]    Compiling gleam v0.2.32
[INFO] [stderr]    Compiling offscreen_gl_context v0.3.0
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]     Checking x11-dl v2.3.1
[INFO] [stderr]     Checking freetype v0.4.1
[INFO] [stderr]     Checking webrender_build v0.0.1 (https://github.com/servo/webrender#70220dc8)
[INFO] [stderr]     Checking euclid v0.9.0
[INFO] [stderr]     Checking app_units v0.3.1
[INFO] [stderr]    Compiling syntex_syntax v0.54.0
[INFO] [stderr]     Checking ipc-channel v0.5.1
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling glutin v0.4.9
[INFO] [stderr]    Compiling gleam v0.6.19
[INFO] [stderr]    Compiling serde_codegen_internals v0.11.3
[INFO] [stderr] error[E0423]: expected function, tuple struct or tuple variant, found struct `ast::Name`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syntex_syntax-0.54.0/src/symbol.rs:146:27
[INFO] [stderr]     |
[INFO] [stderr] 146 |                       name: ast::Name($index),
[INFO] [stderr]     |                             ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 165 | / declare_keywords! {
[INFO] [stderr] 166 | |     // Invalid identifier
[INFO] [stderr] 167 | |     (0,  Invalid,        "")
[INFO] [stderr] 168 | |
[INFO] [stderr] ...   |
[INFO] [stderr] 231 | |     (56, CrateRoot, "{{root}}")
[INFO] [stderr] 232 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr]     Checking euclid v0.6.8
[INFO] [stderr]    Compiling webrender v0.60.0 (https://github.com/servo/webrender#70220dc8)
[INFO] [stderr]    Compiling derive_more v0.13.0
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0423`.
[INFO] [stderr] error: could not compile `syntex_syntax`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "71b43a069b0d73f0685e6d67c79416aafea5e1253009e6c1eacd8f2ba482eccc"`
[INFO] running `"docker" "rm" "-f" "71b43a069b0d73f0685e6d67c79416aafea5e1253009e6c1eacd8f2ba482eccc"`
[INFO] [stdout] 71b43a069b0d73f0685e6d67c79416aafea5e1253009e6c1eacd8f2ba482eccc