Servo fails with stacktrace for every website

[pyfisch]

Building servo after ./mach clean succeeds (although with a few warnings) but on startup servo fails for every website with a stacktrace. I built and ran servo before but these errors are new for me.

How to run servo again, is there some extra clean command?

I am running Ubuntu 16.04.

Version:

$ git rev-parse HEAD
104e0b473073340689b4bca5c128c61632d4e58d

Build output:

$ ./mach build -d
   Compiling khronos_api v1.0.1
   Compiling binary-space-partition v0.1.2
   Compiling itoa v0.3.1
   Compiling precomputed-hash v0.1.0
   Compiling bitreader v0.3.0
   Compiling antidote v1.0.0
   Compiling procedural-masquerade v0.1.2
   Compiling percent-encoding v1.0.0
   Compiling slab v0.3.0
   Compiling adler32 v1.0.0
   Compiling sha1 v0.2.0
   Compiling log v0.3.8
   Compiling typeable v0.1.2
   Compiling lzw v0.10.0
   Compiling thread_profiler v0.1.3
   Compiling libc v0.2.23
   Compiling ref_slice v1.1.1
   Compiling regex-syntax v0.4.1
   Compiling unicode-xid v0.0.4
   Compiling synom v0.11.3
   Compiling same-file v0.1.3
   Compiling xcb v0.7.6
   Compiling time v0.1.37
   Compiling osmesa-src v12.0.1 (https://github.com/servo/osmesa-src#42509fbd)
   Compiling semver v0.1.20
   Compiling lazy_static v0.2.8
   Compiling open v1.2.0
   Compiling error-chain v0.7.2
   Compiling threadpool v1.3.2
   Compiling foreign-types v0.2.0
   Compiling alloc-no-stdlib v1.2.0
   Compiling toml v0.2.1
   Compiling brotli-decompressor v1.0.9
   Compiling ref_filter_map v1.0.1
   Compiling siphasher v0.2.2
   Compiling mp3-metadata v0.2.3
   Compiling quote v0.3.15
   Compiling syn v0.11.11
   Compiling bit-vec v0.4.3
   Compiling bitflags v0.7.0
   Compiling xdg v2.1.0
   Compiling bit-set v0.4.0
   Compiling fnv v1.0.5
   Compiling extra-default v0.2.0
   Compiling unicode-normalization v0.1.4
   Compiling bytes v0.3.0
   Compiling scoped_threadpool v0.1.7
   Compiling utf8-ranges v1.0.0
   Compiling either v1.1.0
   Compiling openssl v0.9.12
   Compiling itertools v0.5.10
   Compiling atomic_refcell v0.1.0
   Compiling thread-id v3.1.0
   Compiling mozjs_sys v0.0.0 (https://github.com/servo/mozjs#834ce35c)
   Compiling cookie v0.6.2
   Compiling gamma-lut v0.2.0
   Compiling dtoa v0.4.1
   Compiling xml-rs v0.3.6
   Compiling servo_remutex v0.0.1 (file:///xyz/servo/components/remutex)
   Compiling xi-unicode v0.1.0
   Compiling script_plugins v0.0.1 (file:///xyz/servo/components/script_plugins)
   Compiling gl_generator v0.5.3
   Compiling half v1.0.0
   Compiling inflate v0.1.1
   Compiling synstructure v0.5.2
   Compiling html5ever v0.18.0
   Compiling servo-glutin v0.11.0
   Compiling rust-webvr v0.5.0
   Compiling domobject_derive v0.0.1 (file:///xyz/servo/components/domobject_derive)
   Compiling cssparser v0.16.1
   Compiling style_derive v0.0.1 (file:///xyz/servo/components/style_derive)
   Compiling glx v0.1.2
   Compiling jstraceable_derive v0.0.1 (file:///xyz/servo/components/jstraceable_derive)
   Compiling matches v0.1.4
   Compiling mac v0.1.1
   Compiling heapsize v0.4.0
   Compiling pkg-config v0.3.9
   Compiling string_cache_shared v0.3.0
   Compiling owning_ref v0.2.4
   Compiling heapsize_derive v0.1.4
   Compiling metadeps v1.1.1
   Compiling gleam v0.4.6
   Compiling x11-dl v2.14.0
   Compiling dbus v0.5.3
   Compiling rustc_version v0.1.7
   Compiling language-tags v0.2.2
   Compiling unicase v1.4.0
   Compiling pdqsort v0.1.2
   Compiling x11 v2.14.0
   Compiling httparse v1.2.1
   Compiling deny_public_fields v0.0.1 (file:///xyz/servo/components/deny_public_fields)
   Compiling rayon-core v1.2.0
   Compiling sig v0.1.1
   Compiling smallvec v0.4.0
   Compiling unicode-segmentation v1.2.0
   Compiling gcc v0.3.47
   Compiling rand v0.3.15
   Compiling tinyfiledialogs v2.5.9
   Compiling parking_lot_core v0.2.2
   Compiling parking_lot v0.3.8
   Compiling libz-sys v1.0.13
   Compiling gaol v0.0.1 (https://github.com/servo/gaol#227ff0ba)
   Compiling backtrace-sys v0.1.11
   Compiling openssl-sys v0.9.12
   Compiling num-traits v0.1.37
   Compiling num-integer v0.1.34
   Compiling num-rational v0.1.36
   Compiling num-iter v0.1.33
   Compiling enum_primitive v0.1.1
   Compiling hyper v0.10.10
   Compiling getopts v0.2.14
   Compiling scopeguard v0.3.2
   Compiling coco v0.1.1
   Compiling bitflags v0.8.2
   Compiling brotli v1.0.8
   Compiling iovec v0.1.0
   Compiling miniz-sys v0.1.9
   Compiling browserhtml v0.1.17 (https://github.com/browserhtml/browserhtml?branch=crate#7c66ae9a)
   Compiling cfg-if v0.1.2
   Compiling bow v1.0.2
   Compiling dom_struct v0.0.1 (file:///xyz/servo/components/dom_struct)
   Compiling signpost v0.1.0 (https://github.com/pcwalton/signpost.git#7ed71250)
   Compiling void v1.0.2
   Compiling walkdir v1.0.7
   Compiling unreachable v0.1.1
   Compiling thread_local v0.3.3
   Compiling debug_unreachable v0.1.1
   Compiling style v0.0.1 (file:///xyz/servo/components/style)
   Compiling futf v0.1.3
   Compiling byteorder v1.0.0
   Compiling traitobject v0.1.0
   Compiling mp4parse v0.7.1
   Compiling base64 v0.5.2
   Compiling deflate v0.7.5
   Compiling ogg v0.5.0
   Compiling png v0.6.2
   Compiling phf_shared v0.7.21
   Compiling phf v0.7.21
   Compiling phf_generator v0.7.21
   Compiling phf_codegen v0.7.21
   Compiling cssparser-macros v0.3.0
   Compiling string_cache_codegen v0.4.0
   Compiling servo_atoms v0.0.1 (file:///xyz/servo/components/atoms)
   Compiling selectors v0.19.0 (file:///xyz/servo/components/selectors)
   Compiling shared_library v0.1.5
   Compiling osmesa-sys v0.1.2
   Compiling mime_guess v1.8.1
   Compiling servo v0.0.1 (file:///xyz/servo/ports/servo)
   Compiling bitflags v0.5.0
   Compiling pulldown-cmark v0.0.8
   Compiling serde_derive_internals v0.15.1
   Compiling memchr v1.0.1
   Compiling aho-corasick v0.6.3
   Compiling regex v0.2.2
   Compiling serde_derive v1.0.8
   Compiling env_logger v0.4.3
   Compiling servo-fontconfig-sys v4.0.3
   Compiling serde v1.0.8
   Compiling servo_rand v0.0.1 (file:///xyz/servo/components/rand)
   Compiling encoding_index_tests v0.1.4
   Compiling encoding-index-singlebyte v1.20141219.5
   Compiling encoding-index-tradchinese v1.20141219.5
   Compiling encoding-index-korean v1.20141219.5
   Compiling encoding-index-simpchinese v1.20141219.5
   Compiling encoding-index-japanese v1.20141219.5
   Compiling encoding v0.2.33
   Compiling rustc-demangle v0.1.4
   Compiling serde_json v1.0.2
   Compiling uuid v0.5.0
   Compiling backtrace v0.3.2
   Compiling euclid v0.15.0
   Compiling plane-split v0.6.0
   Compiling bincode v0.8.0
   Compiling range v0.0.1 (file:///xyz/servo/components/range)
   Compiling gfx_traits v0.0.1 (file:///xyz/servo/components/gfx_traits)
   Compiling error-chain v0.10.0
   Compiling x11-clipboard v0.1.4
   Compiling unicode-bidi v0.3.3
   Compiling clipboard v0.4.0
   Compiling idna v0.1.2
   Compiling offscreen_gl_context v0.11.0
   Compiling url v1.5.1
   Compiling odds v0.2.25
   Compiling nodrop v0.1.8
   Compiling url_serde v0.2.0
   Compiling arrayvec v0.3.23
   Compiling servo_arc v0.0.1 (file:///xyz/servo/components/servo_arc)
   Compiling immeta v0.3.5
   Compiling servo_url v0.0.1 (file:///xyz/servo/components/url)
   Compiling arraydeque v0.2.3
   Compiling libloading v0.4.0
   Compiling color_quant v1.0.0
   Compiling ordered-float v0.4.0
   Compiling gif v0.9.1
   Compiling futures v0.1.13
   Compiling num_cpus v1.4.0
   Compiling string_cache v0.6.0
   Compiling caseless v0.1.3
   Compiling rayon v0.8.1
   Compiling rustc-serialize v0.3.24
   Compiling jpeg-decoder v0.1.13
   Compiling image v0.12.4
   Compiling app_units v0.5.0
   Compiling blurz v0.2.2
   Compiling blurmock v0.1.2
   Compiling device v0.0.1 (https://github.com/servo/devices#1bb5a200)
   Compiling markup5ever v0.3.0
   Compiling servo_geometry v0.0.1 (file:///xyz/servo/components/geometry)
   Compiling servo_config v0.0.1 (file:///xyz/servo/components/config)
   Compiling style_traits v0.0.1 (file:///xyz/servo/components/style_traits)
   Compiling net2 v0.2.29
   Compiling flate2 v0.2.19
   Compiling cmake v0.1.22
   Compiling utf-8 v0.7.1
   Compiling script v0.0.1 (file:///xyz/servo/components/script)
   Compiling heartbeats-simple-sys v0.4.1
   Compiling tendril v0.3.0
   Compiling expat-sys v2.1.4
   Compiling servo-skia v0.30000006.0
   Compiling harfbuzz-sys v0.1.10
   Compiling fontsan v0.3.2 (https://github.com/servo/fontsan#ab68da17)
   Compiling js v0.1.6 (https://github.com/servo/rust-mozjs#3de4ff3d)
   Compiling angle v0.2.0 (https://github.com/servo/angle?branch=servo#a1371e8a)
   Compiling servo-freetype-sys v4.0.3
   Compiling freetype v0.2.0
   Compiling heartbeats-simple v0.4.0
   Compiling azure v0.19.0 (https://github.com/servo/rust-azure#705542c5)
   Compiling unicode-script v0.1.1
   Compiling tempdir v0.3.5
   Compiling skeptic v0.9.0
   Compiling swapper v0.0.4
   Compiling xml5ever v0.8.0
   Compiling ogg_metadata v0.4.1
   Compiling audio-video-metadata v0.1.3
   Compiling webrender v0.44.0 (https://github.com/servo/webrender#a787f8ee)
   Compiling len-trait v0.6.1
   Compiling push-trait v0.5.0
   Compiling multistr v0.5.1
warning[E0122]: trait bounds are not (yet) enforced in type definitions
   --> /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/multistr-0.5.1/src/vec.rs:434:1
    |
434 | pub type SliceVec<T: 'static + Copy> = Dynamic<[T]>;
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning[E0122]: trait bounds are not (yet) enforced in type definitions
   --> /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/multistr-0.5.1/src/array.rs:228:13
    |
228 |               pub type $slice_name<T: 'static + Copy> = $name<[T]>;
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
242 | / gen_impl! {
243 | |     Static2, SliceArray2, StringArray2, CStringArray2, OsStringArray2, 2,
244 | |     Static3, SliceArray3, StringArray3, CStringArray3, OsStringArray3, 3,
245 | |     Static4, SliceArray4, StringArray4, CStringArray4, OsStringArray4, 4,
...   |
257 | |     Static16, SliceArray16, StringArray16, CStringArray16, OsStringArray16, 16,
258 | | }
    | |_- in this macro invocation

warning[E0122]: trait bounds are not (yet) enforced in type definitions
   --> /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/multistr-0.5.1/src/array.rs:228:13
    |
228 |               pub type $slice_name<T: 'static + Copy> = $name<[T]>;
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
242 | / gen_impl! {
243 | |     Static2, SliceArray2, StringArray2, CStringArray2, OsStringArray2, 2,
244 | |     Static3, SliceArray3, StringArray3, CStringArray3, OsStringArray3, 3,
245 | |     Static4, SliceArray4, StringArray4, CStringArray4, OsStringArray4, 4,
...   |
257 | |     Static16, SliceArray16, StringArray16, CStringArray16, OsStringArray16, 16,
258 | | }
    | |_- in this macro invocation

warning[E0122]: trait bounds are not (yet) enforced in type definitions
   --> /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/multistr-0.5.1/src/array.rs:228:13
    |
228 |               pub type $slice_name<T: 'static + Copy> = $name<[T]>;
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
242 | / gen_impl! {
243 | |     Static2, SliceArray2, StringArray2, CStringArray2, OsStringArray2, 2,
244 | |     Static3, SliceArray3, StringArray3, CStringArray3, OsStringArray3, 3,
245 | |     Static4, SliceArray4, StringArray4, CStringArray4, OsStringArray4, 4,
...   |
257 | |     Static16, SliceArray16, StringArray16, CStringArray16, OsStringArray16, 16,
258 | | }
    | |_- in this macro invocation

warning[E0122]: trait bounds are not (yet) enforced in type definitions
   --> /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/multistr-0.5.1/src/array.rs:228:13
    |
228 |               pub type $slice_name<T: 'static + Copy> = $name<[T]>;
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
242 | / gen_impl! {
243 | |     Static2, SliceArray2, StringArray2, CStringArray2, OsStringArray2, 2,
244 | |     Static3, SliceArray3, StringArray3, CStringArray3, OsStringArray3, 3,
245 | |     Static4, SliceArray4, StringArray4, CStringArray4, OsStringArray4, 4,
...   |
257 | |     Static16, SliceArray16, StringArray16, CStringArray16, OsStringArray16, 16,
258 | | }
    | |_- in this macro invocation

warning[E0122]: trait bounds are not (yet) enforced in type definitions
   --> /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/multistr-0.5.1/src/array.rs:228:13
    |
228 |               pub type $slice_name<T: 'static + Copy> = $name<[T]>;
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
242 | / gen_impl! {
243 | |     Static2, SliceArray2, StringArray2, CStringArray2, OsStringArray2, 2,
244 | |     Static3, SliceArray3, StringArray3, CStringArray3, OsStringArray3, 3,
245 | |     Static4, SliceArray4, StringArray4, CStringArray4, OsStringArray4, 4,
...   |
257 | |     Static16, SliceArray16, StringArray16, CStringArray16, OsStringArray16, 16,
258 | | }
    | |_- in this macro invocation

warning[E0122]: trait bounds are not (yet) enforced in type definitions
   --> /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/multistr-0.5.1/src/array.rs:228:13
    |
228 |               pub type $slice_name<T: 'static + Copy> = $name<[T]>;
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
242 | / gen_impl! {
243 | |     Static2, SliceArray2, StringArray2, CStringArray2, OsStringArray2, 2,
244 | |     Static3, SliceArray3, StringArray3, CStringArray3, OsStringArray3, 3,
245 | |     Static4, SliceArray4, StringArray4, CStringArray4, OsStringArray4, 4,
...   |
257 | |     Static16, SliceArray16, StringArray16, CStringArray16, OsStringArray16, 16,
258 | | }
    | |_- in this macro invocation

warning[E0122]: trait bounds are not (yet) enforced in type definitions
   --> /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/multistr-0.5.1/src/array.rs:228:13
    |
228 |               pub type $slice_name<T: 'static + Copy> = $name<[T]>;
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
242 | / gen_impl! {
243 | |     Static2, SliceArray2, StringArray2, CStringArray2, OsStringArray2, 2,
244 | |     Static3, SliceArray3, StringArray3, CStringArray3, OsStringArray3, 3,
245 | |     Static4, SliceArray4, StringArray4, CStringArray4, OsStringArray4, 4,
...   |
257 | |     Static16, SliceArray16, StringArray16, CStringArray16, OsStringArray16, 16,
258 | | }
    | |_- in this macro invocation

warning[E0122]: trait bounds are not (yet) enforced in type definitions
   --> /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/multistr-0.5.1/src/array.rs:228:13
    |
228 |               pub type $slice_name<T: 'static + Copy> = $name<[T]>;
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
242 | / gen_impl! {
243 | |     Static2, SliceArray2, StringArray2, CStringArray2, OsStringArray2, 2,
244 | |     Static3, SliceArray3, StringArray3, CStringArray3, OsStringArray3, 3,
245 | |     Static4, SliceArray4, StringArray4, CStringArray4, OsStringArray4, 4,
...   |
257 | |     Static16, SliceArray16, StringArray16, CStringArray16, OsStringArray16, 16,
258 | | }
    | |_- in this macro invocation

warning[E0122]: trait bounds are not (yet) enforced in type definitions
   --> /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/multistr-0.5.1/src/array.rs:228:13
    |
228 |               pub type $slice_name<T: 'static + Copy> = $name<[T]>;
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
242 | / gen_impl! {
243 | |     Static2, SliceArray2, StringArray2, CStringArray2, OsStringArray2, 2,
244 | |     Static3, SliceArray3, StringArray3, CStringArray3, OsStringArray3, 3,
245 | |     Static4, SliceArray4, StringArray4, CStringArray4, OsStringArray4, 4,
...   |
257 | |     Static16, SliceArray16, StringArray16, CStringArray16, OsStringArray16, 16,
258 | | }
    | |_- in this macro invocation

warning[E0122]: trait bounds are not (yet) enforced in type definitions
   --> /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/multistr-0.5.1/src/array.rs:228:13
    |
228 |               pub type $slice_name<T: 'static + Copy> = $name<[T]>;
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
242 | / gen_impl! {
243 | |     Static2, SliceArray2, StringArray2, CStringArray2, OsStringArray2, 2,
244 | |     Static3, SliceArray3, StringArray3, CStringArray3, OsStringArray3, 3,
245 | |     Static4, SliceArray4, StringArray4, CStringArray4, OsStringArray4, 4,
...   |
257 | |     Static16, SliceArray16, StringArray16, CStringArray16, OsStringArray16, 16,
258 | | }
    | |_- in this macro invocation

warning[E0122]: trait bounds are not (yet) enforced in type definitions
   --> /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/multistr-0.5.1/src/array.rs:228:13
    |
228 |               pub type $slice_name<T: 'static + Copy> = $name<[T]>;
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
242 | / gen_impl! {
243 | |     Static2, SliceArray2, StringArray2, CStringArray2, OsStringArray2, 2,
244 | |     Static3, SliceArray3, StringArray3, CStringArray3, OsStringArray3, 3,
245 | |     Static4, SliceArray4, StringArray4, CStringArray4, OsStringArray4, 4,
...   |
257 | |     Static16, SliceArray16, StringArray16, CStringArray16, OsStringArray16, 16,
258 | | }
    | |_- in this macro invocation

warning[E0122]: trait bounds are not (yet) enforced in type definitions
   --> /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/multistr-0.5.1/src/array.rs:228:13
    |
228 |               pub type $slice_name<T: 'static + Copy> = $name<[T]>;
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
242 | / gen_impl! {
243 | |     Static2, SliceArray2, StringArray2, CStringArray2, OsStringArray2, 2,
244 | |     Static3, SliceArray3, StringArray3, CStringArray3, OsStringArray3, 3,
245 | |     Static4, SliceArray4, StringArray4, CStringArray4, OsStringArray4, 4,
...   |
257 | |     Static16, SliceArray16, StringArray16, CStringArray16, OsStringArray16, 16,
258 | | }
    | |_- in this macro invocation

warning[E0122]: trait bounds are not (yet) enforced in type definitions
   --> /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/multistr-0.5.1/src/array.rs:228:13
    |
228 |               pub type $slice_name<T: 'static + Copy> = $name<[T]>;
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
242 | / gen_impl! {
243 | |     Static2, SliceArray2, StringArray2, CStringArray2, OsStringArray2, 2,
244 | |     Static3, SliceArray3, StringArray3, CStringArray3, OsStringArray3, 3,
245 | |     Static4, SliceArray4, StringArray4, CStringArray4, OsStringArray4, 4,
...   |
257 | |     Static16, SliceArray16, StringArray16, CStringArray16, OsStringArray16, 16,
258 | | }
    | |_- in this macro invocation

warning[E0122]: trait bounds are not (yet) enforced in type definitions
   --> /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/multistr-0.5.1/src/array.rs:228:13
    |
228 |               pub type $slice_name<T: 'static + Copy> = $name<[T]>;
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
242 | / gen_impl! {
243 | |     Static2, SliceArray2, StringArray2, CStringArray2, OsStringArray2, 2,
244 | |     Static3, SliceArray3, StringArray3, CStringArray3, OsStringArray3, 3,
245 | |     Static4, SliceArray4, StringArray4, CStringArray4, OsStringArray4, 4,
...   |
257 | |     Static16, SliceArray16, StringArray16, CStringArray16, OsStringArray16, 16,
258 | | }
    | |_- in this macro invocation

warning[E0122]: trait bounds are not (yet) enforced in type definitions
   --> /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/multistr-0.5.1/src/array.rs:228:13
    |
228 |               pub type $slice_name<T: 'static + Copy> = $name<[T]>;
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
242 | / gen_impl! {
243 | |     Static2, SliceArray2, StringArray2, CStringArray2, OsStringArray2, 2,
244 | |     Static3, SliceArray3, StringArray3, CStringArray3, OsStringArray3, 3,
245 | |     Static4, SliceArray4, StringArray4, CStringArray4, OsStringArray4, 4,
...   |
257 | |     Static16, SliceArray16, StringArray16, CStringArray16, OsStringArray16, 16,
258 | | }
    | |_- in this macro invocation

   Compiling parse-hosts v0.4.0
warning[E0122]: trait bounds are not (yet) enforced in type definitions
  --> /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/parse-hosts-0.4.0/src/hosts_file.rs:10:1
   |
10 | pub type BufHostsFile<R: Read> = HostsFile<BufReader<R>>;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

   Compiling mime v0.2.4
   Compiling webdriver v0.22.0
   Compiling influent v0.4.0
   Compiling serde_bytes v0.10.0
   Compiling hyper_serde v0.7.0
   Compiling simd v0.2.0
   Compiling lazycell v0.4.0
   Compiling mio v0.6.9
   Compiling ipc-channel v0.8.0
   Compiling webrender_traits v0.44.0 (https://github.com/servo/webrender#a787f8ee)
   Compiling bluetooth_traits v0.0.1 (file:///xyz/servo/components/bluetooth_traits)
   Compiling ws v0.6.0
   Compiling bluetooth v0.0.1 (file:///xyz/servo/components/bluetooth)
   Compiling debugger v0.0.1 (file:///xyz/servo/components/debugger)
   Compiling profile_traits v0.0.1 (file:///xyz/servo/components/profile_traits)
   Compiling servo-fontconfig v0.2.1
   Compiling profile v0.0.1 (file:///xyz/servo/components/profile)
   Compiling msg v0.0.1 (file:///xyz/servo/components/msg)
   Compiling net_traits v0.0.1 (file:///xyz/servo/components/net_traits)
   Compiling canvas_traits v0.0.1 (file:///xyz/servo/components/canvas_traits)
   Compiling servo-websocket v0.19.1
   Compiling canvas v0.0.1 (file:///xyz/servo/components/canvas)
   Compiling devtools_traits v0.0.1 (file:///xyz/servo/components/devtools_traits)
   Compiling devtools v0.0.1 (file:///xyz/servo/components/devtools)
   Compiling gfx v0.0.1 (file:///xyz/servo/components/gfx)
   Compiling hyper-openssl v0.2.6
   Compiling net v0.0.1 (file:///xyz/servo/components/net)
   Compiling webvr_traits v0.0.1 (file:///xyz/servo/components/webvr_traits)
   Compiling script_traits v0.0.1 (file:///xyz/servo/components/script_traits)
   Compiling webdriver_server v0.0.1 (file:///xyz/servo/components/webdriver_server)
   Compiling script_layout_interface v0.0.1 (file:///xyz/servo/components/script_layout_interface)
   Compiling compositing v0.0.1 (file:///xyz/servo/components/compositing)
   Compiling glutin_app v0.0.1 (file:///xyz/servo/ports/glutin)
   Compiling layout_traits v0.0.1 (file:///xyz/servo/components/layout_traits)
   Compiling webvr v0.0.1 (file:///xyz/servo/components/webvr)
   Compiling constellation v0.0.1 (file:///xyz/servo/components/constellation)
   Compiling layout v0.0.1 (file:///xyz/servo/components/layout)
   Compiling layout_thread v0.0.1 (file:///xyz/servo/components/layout_thread)
   Compiling libservo v0.0.1 (file:///xyz/servo/components/servo)
    Finished dev [unoptimized + debuginfo] target(s) in 1457.98 secs
Build Completed in 0:24:23

Stacktrace:

$ RUST_LOG="debug" ./mach run -d https://google.com
Stack trace for thread "main"
stack backtrace:
   0:     0x556d70326324 - backtrace::backtrace::libunwind::trace
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.2/src/backtrace/libunwind.rs:53
                         - backtrace::backtrace::trace<closure>
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.2/src/backtrace/mod.rs:42
   1:     0x556d7031d79f - backtrace::capture::{{impl}}::new
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.2/src/capture.rs:64
   2:     0x556d6a4ba401 - servo::install_crash_handler::handler
                        at /xyz/servo/ports/servo/main.rs:71
   3:     0x7f54ff5534af - <unknown>
   4:     0x556d709f802c - compiler_builtins::probestack::__rust_probestack
                        at /checkout/src/rustc/compiler_builtins_shim/../../libcompiler_builtins/src/probestack.rs:55
   5:     0x556d6dec087d - lazy_static::lazy::{{impl}}::get::{{closure}}<[(&str, usize); 767],fn() -> [(&str, usize); 767]>
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/lazy_static-0.2.8/src/lazy.rs:22
   6:     0x556d6dec0389 - std::sync::once::{{impl}}::call_once::{{closure}}<closure>
                        at /checkout/src/libstd/sync/once.rs:227
   7:     0x556d709b420c - std::sync::once::{{impl}}::call_inner
                        at /checkout/src/libstd/sync/once.rs:307
   8:     0x556d6dec008b - std::sync::once::{{impl}}::call_once<closure>
                        at /checkout/src/libstd/sync/once.rs:227
   9:     0x556d6deb627f - lazy_static::lazy::{{impl}}::get<[(&str, usize); 767],fn() -> [(&str, usize); 767]>
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/lazy_static-0.2.8/src/lazy.rs:22
                         - x11_dl::xlib::{{impl}}::init::{{impl}}::deref::__stability
                        at /xyz/servo/ports/servo/<__lazy_static_internal macros>:20
                         - x11_dl::xlib::{{impl}}::init::{{impl}}::deref
                        at /xyz/servo/ports/servo/<__lazy_static_internal macros>:21
  10:     0x556d6deb5bb1 - x11_dl::xlib::{{impl}}::init
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/x11-dl-2.14.0/src/link.rs:48
  11:     0x556d6deb601c - x11_dl::xlib::{{impl}}::open
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/x11-dl-2.14.0/src/link.rs:61
  12:     0x556d6de7a92e - glutin::api::x11::xdisplay::{{impl}}::new
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/servo-glutin-0.11.0/src/api/x11/xdisplay.rs:33
  13:     0x556d6de640e5 - glutin::platform::platform::api_dispatch::{{impl}}::deref::__static_ref_initialize
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/servo-glutin-0.11.0/src/platform/linux/api_dispatch.rs:34
                         - core::ops::function::FnOnce::call_once<fn() -> glutin::platform::platform::api_dispatch::Backend,()>
                        at /checkout/src/libcore/ops/function.rs:143
  14:     0x556d6de6229c - lazy_static::lazy::{{impl}}::get::{{closure}}<glutin::platform::platform::api_dispatch::Backend,fn() -> glutin::platform::platform::api_dispatch::Backend>
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/lazy_static-0.2.8/src/lazy.rs:23
  15:     0x556d6de61d79 - std::sync::once::{{impl}}::call_once::{{closure}}<closure>
                        at /checkout/src/libstd/sync/once.rs:227
  16:     0x556d709b420c - std::sync::once::{{impl}}::call_inner
                        at /checkout/src/libstd/sync/once.rs:307
  17:     0x556d6de61c8b - std::sync::once::{{impl}}::call_once<closure>
                        at /checkout/src/libstd/sync/once.rs:227
  18:     0x556d6de81d5f - lazy_static::lazy::{{impl}}::get<glutin::platform::platform::api_dispatch::Backend,fn() -> glutin::platform::platform::api_dispatch::Backend>
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/lazy_static-0.2.8/src/lazy.rs:22
                         - glutin::platform::platform::api_dispatch::{{impl}}::deref::__stability
                        at /xyz/servo/ports/servo/<__lazy_static_internal macros>:20
                         - glutin::platform::platform::api_dispatch::{{impl}}::deref
                        at /xyz/servo/ports/servo/<__lazy_static_internal macros>:21
  19:     0x556d6deb4000 - glutin::platform::platform::api_dispatch::{{impl}}::new
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/servo-glutin-0.11.0/src/platform/linux/api_dispatch.rs:123
  20:     0x556d6deb45c8 - glutin::window::{{impl}}::build
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/servo-glutin-0.11.0/src/window.rs:233
  21:     0x556d6a4c8455 - glutin_app::window::{{impl}}::new
                        at /xyz/servo/ports/glutin/window.rs:261
  22:     0x556d6a50a28a - glutin_app::create_window
                        at /xyz/servo/ports/glutin/lib.rs:49
  23:     0x556d6a4baa06 - servo::main
                        at /xyz/servo/ports/servo/main.rs:146
  24:     0x556d709c7e5c - panic_unwind::__rust_maybe_catch_panic
                        at /checkout/src/libpanic_unwind/lib.rs:98
  25:     0x556d709c147b - std::panicking::try<(),closure>
                        at /checkout/src/libstd/panicking.rs:458
                         - std::panic::catch_unwind<closure,()>
                        at /checkout/src/libstd/panic.rs:361
                         - std::rt::lang_start
                        at /checkout/src/libstd/rt.rs:59
  26:     0x556d6a4bc362 - main
  27:     0x7f54ff53e82f - __libc_start_main
  28:     0x556d6a3a58d8 - _start
  29:                0x0 - <unknown>
Stack trace for thread "main"
stack backtrace:
   0:     0x556d70326324 - backtrace::backtrace::libunwind::trace
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.2/src/backtrace/libunwind.rs:53
                         - backtrace::backtrace::trace<closure>
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.2/src/backtrace/mod.rs:42
   1:     0x556d7031d79f - backtrace::capture::{{impl}}::new
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.2/src/capture.rs:64
   2:     0x556d6a4ba401 - servo::install_crash_handler::handler
                        at /xyz/servo/ports/servo/main.rs:71
   3:     0x7f54ff5534af - <unknown>
   4:     0x556d6a4ba4fa - servo::install_crash_handler::handler
                        at /xyz/servo/ports/servo/main.rs:75
   5:     0x7f54ff5534af - <unknown>
   6:     0x556d709f802c - compiler_builtins::probestack::__rust_probestack
                        at /checkout/src/rustc/compiler_builtins_shim/../../libcompiler_builtins/src/probestack.rs:55
   7:     0x556d6dec087d - lazy_static::lazy::{{impl}}::get::{{closure}}<[(&str, usize); 767],fn() -> [(&str, usize); 767]>
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/lazy_static-0.2.8/src/lazy.rs:22
   8:     0x556d6dec0389 - std::sync::once::{{impl}}::call_once::{{closure}}<closure>
                        at /checkout/src/libstd/sync/once.rs:227
   9:     0x556d709b420c - std::sync::once::{{impl}}::call_inner
                        at /checkout/src/libstd/sync/once.rs:307
  10:     0x556d6dec008b - std::sync::once::{{impl}}::call_once<closure>
                        at /checkout/src/libstd/sync/once.rs:227
  11:     0x556d6deb627f - lazy_static::lazy::{{impl}}::get<[(&str, usize); 767],fn() -> [(&str, usize); 767]>
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/lazy_static-0.2.8/src/lazy.rs:22
                         - x11_dl::xlib::{{impl}}::init::{{impl}}::deref::__stability
                        at /xyz/servo/ports/servo/<__lazy_static_internal macros>:20
                         - x11_dl::xlib::{{impl}}::init::{{impl}}::deref
                        at /xyz/servo/ports/servo/<__lazy_static_internal macros>:21
  12:     0x556d6deb5bb1 - x11_dl::xlib::{{impl}}::init
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/x11-dl-2.14.0/src/link.rs:48
  13:     0x556d6deb601c - x11_dl::xlib::{{impl}}::open
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/x11-dl-2.14.0/src/link.rs:61
  14:     0x556d6de7a92e - glutin::api::x11::xdisplay::{{impl}}::new
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/servo-glutin-0.11.0/src/api/x11/xdisplay.rs:33
  15:     0x556d6de640e5 - glutin::platform::platform::api_dispatch::{{impl}}::deref::__static_ref_initialize
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/servo-glutin-0.11.0/src/platform/linux/api_dispatch.rs:34
                         - core::ops::function::FnOnce::call_once<fn() -> glutin::platform::platform::api_dispatch::Backend,()>
                        at /checkout/src/libcore/ops/function.rs:143
  16:     0x556d6de6229c - lazy_static::lazy::{{impl}}::get::{{closure}}<glutin::platform::platform::api_dispatch::Backend,fn() -> glutin::platform::platform::api_dispatch::Backend>
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/lazy_static-0.2.8/src/lazy.rs:23
  17:     0x556d6de61d79 - std::sync::once::{{impl}}::call_once::{{closure}}<closure>
                        at /checkout/src/libstd/sync/once.rs:227
  18:     0x556d709b420c - std::sync::once::{{impl}}::call_inner
                        at /checkout/src/libstd/sync/once.rs:307
  19:     0x556d6de61c8b - std::sync::once::{{impl}}::call_once<closure>
                        at /checkout/src/libstd/sync/once.rs:227
  20:     0x556d6de81d5f - lazy_static::lazy::{{impl}}::get<glutin::platform::platform::api_dispatch::Backend,fn() -> glutin::platform::platform::api_dispatch::Backend>
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/lazy_static-0.2.8/src/lazy.rs:22
                         - glutin::platform::platform::api_dispatch::{{impl}}::deref::__stability
                        at /xyz/servo/ports/servo/<__lazy_static_internal macros>:20
                         - glutin::platform::platform::api_dispatch::{{impl}}::deref
                        at /xyz/servo/ports/servo/<__lazy_static_internal macros>:21
  21:     0x556d6deb4000 - glutin::platform::platform::api_dispatch::{{impl}}::new
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/servo-glutin-0.11.0/src/platform/linux/api_dispatch.rs:123
  22:     0x556d6deb45c8 - glutin::window::{{impl}}::build
                        at /xyz/servo/.cargo/registry/src/github.com-1ecc6299db9ec823/servo-glutin-0.11.0/src/window.rs:233
  23:     0x556d6a4c8455 - glutin_app::window::{{impl}}::new
                        at /xyz/servo/ports/glutin/window.rs:261
  24:     0x556d6a50a28a - glutin_app::create_window
                        at /xyz/servo/ports/glutin/lib.rs:49
  25:     0x556d6a4baa06 - servo::main
                        at /xyz/servo/ports/servo/main.rs:146
  26:     0x556d709c7e5c - panic_unwind::__rust_maybe_catch_panic
                        at /checkout/src/libpanic_unwind/lib.rs:98
  27:     0x556d709c147b - std::panicking::try<(),closure>
                        at /checkout/src/libstd/panicking.rs:458
                         - std::panic::catch_unwind<closure,()>
                        at /checkout/src/libstd/panic.rs:361
                         - std::rt::lang_start
                        at /checkout/src/libstd/rt.rs:59
  28:     0x556d6a4bc362 - main
  29:     0x7f54ff53e82f - __libc_start_main
  30:     0x556d6a3a58d8 - _start
  31:                0x0 - <unknown>
Servo exited with return value -4

[emilio]

This is a known nightly issue, that should be fixed in the next nightly, though I can't look the right issue right now (on my phone). You can grep for stackprobe in rust-lang/rust.

[emilio]

Err, the change hasn't merged yet. But this is rust-lang/rust#43102.