[INFO] updating cached repository https://github.com/Max-E/servo_library_bug
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/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] 2fe63106a437832437c6903531bd3b705d1b9420
[INFO] checking Max-E/servo_library_bug against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FMax-E%2Fservo_library_bug" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Max-E/servo_library_bug on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Max-E/servo_library_bug
[INFO] finished tweaking git repo https://github.com/Max-E/servo_library_bug
[INFO] tweaked toml for git repo https://github.com/Max-E/servo_library_bug written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Max-E/servo_library_bug already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 42e5b9f51920b01d3df7f3dc32b393979631fd2a84f1315981b5d6a07a3fd831
[INFO] running `"docker" "start" "-a" "42e5b9f51920b01d3df7f3dc32b393979631fd2a84f1315981b5d6a07a3fd831"`
[INFO] [stderr]    Compiling num-traits v0.2.1
[INFO] [stderr]    Compiling mozjs_sys v0.50.1
[INFO] [stderr]     Checking smallbitvec v1.0.7
[INFO] [stderr]    Compiling ident_case v1.0.0
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling ucd-util v0.1.1
[INFO] [stderr]    Compiling same-file v0.1.3
[INFO] [stderr]     Checking signpost v0.1.0 (https://github.com/pcwalton/signpost.git#7ed71250)
[INFO] [stderr]    Compiling webrender v0.57.0 (https://github.com/servo/webrender#0cf34e0b)
[INFO] [stderr]     Checking binary-space-partition v0.1.2
[INFO] [stderr]     Checking thread_profiler v0.1.3
[INFO] [stderr]     Checking bitreader v0.3.1
[INFO] [stderr]     Checking alloc-no-stdlib v1.2.0
[INFO] [stderr]     Checking atomic_refcell v0.1.1
[INFO] [stderr]     Checking hex v0.3.1
[INFO] [stderr]     Checking mp3-metadata v0.3.0
[INFO] [stderr]    Compiling dom_struct v0.0.1 (https://github.com/servo/servo?rev=2f8fa32#2f8fa32e)
[INFO] [stderr]     Checking swapper v0.1.0
[INFO] [stderr]     Checking half v1.0.2
[INFO] [stderr]     Checking ref_slice v1.1.1
[INFO] [stderr]     Checking mitochondria v1.1.2
[INFO] [stderr] error[E0658]: use of unstable library feature 'proc_macro_quote'
[INFO] [stderr]   --> /opt/rustwide/cargo-home/git/checkouts/servo-12bfca331f128de3/2f8fa32/components/dom_struct/lib.rs:17:22
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let attributes = quote! {
[INFO] [stderr]    |                      ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/54722
[INFO] [stderr]    = help: add `#![feature(proc_macro_quote)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: procedural macros cannot be expanded to expressions
[INFO] [stderr]   --> /opt/rustwide/cargo-home/git/checkouts/servo-12bfca331f128de3/2f8fa32/components/dom_struct/lib.rs:17:22
[INFO] [stderr]    |
[INFO] [stderr] 17 |       let attributes = quote! {
[INFO] [stderr]    |  ______________________^
[INFO] [stderr] 18 | |         #[derive(DenyPublicFields, DomObject, JSTraceable, MallocSizeOf)]
[INFO] [stderr] 19 | |         #[must_root]
[INFO] [stderr] 20 | |         #[repr(C)]
[INFO] [stderr] 21 | |     };
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/54727
[INFO] [stderr]    = help: add `#![feature(proc_macro_hygiene)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'proc_macro_quote'
[INFO] [stderr]  --> /opt/rustwide/cargo-home/git/checkouts/servo-12bfca331f128de3/2f8fa32/components/dom_struct/lib.rs:9:31
[INFO] [stderr]   |
[INFO] [stderr] 9 | use proc_macro::{TokenStream, quote};
[INFO] [stderr]   |                               ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/54722
[INFO] [stderr]   = help: add `#![feature(proc_macro_quote)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: Could not compile `dom_struct`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "42e5b9f51920b01d3df7f3dc32b393979631fd2a84f1315981b5d6a07a3fd831"`
[INFO] running `"docker" "rm" "-f" "42e5b9f51920b01d3df7f3dc32b393979631fd2a84f1315981b5d6a07a3fd831"`
[INFO] [stdout] 42e5b9f51920b01d3df7f3dc32b393979631fd2a84f1315981b5d6a07a3fd831