[INFO] updating cached repository paulrouget/servoshell
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/paulrouget/servoshell
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/paulrouget/servoshell" "work/ex/beta-1.37-6/sources/1.36.0/gh/paulrouget/servoshell"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/paulrouget/servoshell'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/paulrouget/servoshell" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/paulrouget/servoshell"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/paulrouget/servoshell'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a51916ae135730afda6bf3e26e5793595049ecba
[INFO] sha for GitHub repo paulrouget/servoshell: a51916ae135730afda6bf3e26e5793595049ecba
[INFO] validating manifest of paulrouget/servoshell 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 paulrouget/servoshell 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 paulrouget/servoshell
[INFO] finished frobbing paulrouget/servoshell
[INFO] frobbed toml for paulrouget/servoshell written to work/ex/beta-1.37-6/sources/1.36.0/gh/paulrouget/servoshell/Cargo.toml
[INFO] started frobbing paulrouget/servoshell
[INFO] finished frobbing paulrouget/servoshell
[INFO] frobbed toml for paulrouget/servoshell written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/paulrouget/servoshell/Cargo.toml
[INFO] crate paulrouget/servoshell 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing paulrouget/servoshell against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/paulrouget/servoshell:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 5e1a8a89444865ec5120c9f4308345abf2e3248a3df937a30e1567a6dd656c3b
[INFO] running `"docker" "start" "-a" "5e1a8a89444865ec5120c9f4308345abf2e3248a3df937a30e1567a6dd656c3b"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling libc v0.2.33
[INFO] [stderr]    Compiling mozjs_sys v0.50.0
[INFO] [stderr]    Compiling procedural-masquerade v0.1.2
[INFO] [stderr]    Compiling rayon-core v1.2.0
[INFO] [stderr]    Compiling futures v0.1.13
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling smallvec v0.6.0
[INFO] [stderr]    Compiling ident_case v1.0.0
[INFO] [stderr]    Compiling libloading v0.4.0
[INFO] [stderr]    Compiling smallbitvec v1.0.6
[INFO] [stderr]    Compiling bindgen v0.31.3
[INFO] [stderr]    Compiling getopts v0.2.14
[INFO] [stderr]    Compiling signpost v0.1.0 (https://github.com/pcwalton/signpost.git#7ed71250)
[INFO] [stderr]    Compiling atomic_refcell v0.1.0
[INFO] [stderr] warning[E0503]: cannot use `state` because it was mutably borrowed
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/getopts-0.2.14/src/lib.rs:1008:33
[INFO] [stderr]      |
[INFO] [stderr] 955  |     let mut machine = |cont: &mut bool, (i, c): (usize, char)| {
[INFO] [stderr]      |                       ---------------------------------------- borrow of `state` occurs here
[INFO] [stderr] ...
[INFO] [stderr] 959  |         state = match (state, whitespace, limit) {
[INFO] [stderr]      |         ----- borrow occurs due to use of `state` in closure
[INFO] [stderr] ...
[INFO] [stderr] 1008 |     while cont && match state { B | C => true, A => false } {
[INFO] [stderr]      |                                 ^ use of borrowed `state`
[INFO] [stderr] 1009 |         machine(&mut cont, (fake_i, ' '));
[INFO] [stderr]      |         ------- borrow later used here
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]      = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr] 
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling openssl v0.9.22
[INFO] [stderr]    Compiling binary-space-partition v0.1.2
[INFO] [stderr]    Compiling webrender v0.56.1 (https://github.com/servo/webrender#92959212)
[INFO] [stderr]    Compiling bitreader v0.3.0
[INFO] [stderr]    Compiling thread_profiler v0.1.3
[INFO] [stderr]    Compiling alloc-no-stdlib v1.2.0
[INFO] [stderr]    Compiling mp3-metadata v0.3.0
[INFO] [stderr]    Compiling mitochondria v1.1.2
[INFO] [stderr]    Compiling threadpool v1.3.2
[INFO] [stderr]    Compiling dom_struct v0.0.1 (https://github.com/servo/servo?rev=989d2fd532#989d2fd5)
[INFO] [stderr]    Compiling open v1.2.0
[INFO] [stderr]    Compiling ref_slice v1.1.1
[INFO] [stderr] error[E0658]: procedural macros cannot be expanded to expressions
[INFO] [stderr]   --> /opt/crater/cargo-home/git/checkouts/servo-12bfca331f128de3/989d2fd/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 stable release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/git/checkouts/servo-12bfca331f128de3/989d2fd/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-12bfca331f128de3/989d2fd/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] 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" "5e1a8a89444865ec5120c9f4308345abf2e3248a3df937a30e1567a6dd656c3b"`
[INFO] running `"docker" "rm" "-f" "5e1a8a89444865ec5120c9f4308345abf2e3248a3df937a30e1567a6dd656c3b"`
[INFO] [stdout] 5e1a8a89444865ec5120c9f4308345abf2e3248a3df937a30e1567a6dd656c3b