[INFO] updating cached repository zacps/sand
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/zacps/sand
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/zacps/sand" "work/ex/beta-1.37-6/sources/1.36.0/gh/zacps/sand"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/zacps/sand'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/zacps/sand" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/zacps/sand"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/zacps/sand'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] eadce4677effb0995d363fd06497495340722d20
[INFO] sha for GitHub repo zacps/sand: eadce4677effb0995d363fd06497495340722d20
[INFO] validating manifest of zacps/sand on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of zacps/sand on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing zacps/sand
[INFO] finished frobbing zacps/sand
[INFO] frobbed toml for zacps/sand written to work/ex/beta-1.37-6/sources/1.36.0/gh/zacps/sand/Cargo.toml
[INFO] started frobbing zacps/sand
[INFO] finished frobbing zacps/sand
[INFO] frobbed toml for zacps/sand written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/zacps/sand/Cargo.toml
[INFO] crate zacps/sand already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing zacps/sand against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/zacps/sand:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] bc40066d05e3929963fe438f232ef7ee4eb64e06ddcbff9c842dfbb2f5b543ac
[INFO] running `"docker" "start" "-a" "bc40066d05e3929963fe438f232ef7ee4eb64e06ddcbff9c842dfbb2f5b543ac"`
[INFO] [stderr]    Compiling gcc v0.3.47
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling cc v1.0.1
[INFO] [stderr]    Compiling heapsize v0.4.0
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling slab v0.3.0
[INFO] [stderr]    Compiling lazycell v0.4.0
[INFO] [stderr]    Compiling mozjs_sys v0.50.0
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling rayon-core v1.2.0
[INFO] [stderr]    Compiling fnv v1.0.5
[INFO] [stderr]    Compiling procedural-masquerade v0.1.2
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling ident_case v1.0.0
[INFO] [stderr]    Compiling stable_deref_trait v1.0.0
[INFO] [stderr]    Compiling futures v0.1.13
[INFO] [stderr]    Compiling percent-encoding v1.0.0
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling smallvec v0.6.0
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling smallbitvec v1.0.6
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling adler32 v1.0.0
[INFO] [stderr]    Compiling libloading v0.4.0
[INFO] [stderr]    Compiling ansi_term v0.10.2
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]    Compiling vec_map v0.8.0
[INFO] [stderr]    Compiling httparse v1.2.1
[INFO] [stderr]    Compiling nom v1.2.4
[INFO] [stderr]    Compiling bindgen v0.31.3
[INFO] [stderr]    Compiling scoped_threadpool v0.1.7
[INFO] [stderr]    Compiling atomic_refcell v0.1.0
[INFO] [stderr]    Compiling unicode-segmentation v1.2.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling signpost v0.1.0 (https://github.com/pcwalton/signpost.git#7ed71250)
[INFO] [stderr]    Compiling openssl v0.9.22
[INFO] [stderr]    Compiling xi-unicode v0.1.0
[INFO] [stderr]    Compiling webrender v0.55.0 (https://github.com/servo/webrender#23d1358c)
[INFO] [stderr]    Compiling binary-space-partition v0.1.2
[INFO] [stderr]    Compiling bitreader v0.3.0
[INFO] [stderr]    Compiling alloc-no-stdlib v1.2.0
[INFO] [stderr]    Compiling thread_profiler v0.1.3
[INFO] [stderr]    Compiling bytes v0.3.0
[INFO] [stderr]    Compiling mp3-metadata v0.3.0
[INFO] [stderr]    Compiling khronos_api v1.0.1
[INFO] [stderr]    Compiling sha1 v0.2.0
[INFO] [stderr]    Compiling ref_slice v1.1.1
[INFO] [stderr]    Compiling swapper v0.1.0
[INFO] [stderr]    Compiling half v1.0.0
[INFO] [stderr]    Compiling threadpool v1.3.2
[INFO] [stderr]    Compiling mitochondria v1.1.2
[INFO] [stderr]    Compiling pam-sys v0.5.4
[INFO] [stderr]    Compiling dom_struct v0.0.1 (https://github.com/servo/servo?rev=22472b4#22472b4d)
[INFO] [stderr] error[E0658]: procedural macros cannot be expanded to expressions
[INFO] [stderr]   --> /opt/crater/cargo-home/git/checkouts/servo-12bfca331f128de3/22472b4/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] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the beta release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/git/checkouts/servo-12bfca331f128de3/22472b4/components/dom_struct/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![feature(proc_macro)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'proc_macro_quote'
[INFO] [stderr]  --> /opt/crater/cargo-home/git/checkouts/servo-12bfca331f128de3/22472b4/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] 
[INFO] [stderr]    Compiling open v1.2.0
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[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" "bc40066d05e3929963fe438f232ef7ee4eb64e06ddcbff9c842dfbb2f5b543ac"`
[INFO] running `"docker" "rm" "-f" "bc40066d05e3929963fe438f232ef7ee4eb64e06ddcbff9c842dfbb2f5b543ac"`
[INFO] [stdout] bc40066d05e3929963fe438f232ef7ee4eb64e06ddcbff9c842dfbb2f5b543ac