[INFO] crate tri-mesh 0.4.0 is already in cache
[INFO] extracting crate tri-mesh 0.4.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/tri-mesh/0.4.0
[INFO] extracting crate tri-mesh 0.4.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/tri-mesh/0.4.0
[INFO] validating manifest of tri-mesh-0.4.0 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 tri-mesh-0.4.0 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 tri-mesh-0.4.0
[INFO] finished frobbing tri-mesh-0.4.0
[INFO] frobbed toml for tri-mesh-0.4.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/tri-mesh/0.4.0/Cargo.toml
[INFO] started frobbing tri-mesh-0.4.0
[INFO] finished frobbing tri-mesh-0.4.0
[INFO] frobbed toml for tri-mesh-0.4.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/tri-mesh/0.4.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 tri-mesh-0.4.0 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-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/tri-mesh/0.4.0:/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] 5f25b615f9e52af5a4fadfc4b9252329b388e0a3f80c624e1e6b5eb0ef0d061f
[INFO] running `"docker" "start" "-a" "5f25b615f9e52af5a4fadfc4b9252329b388e0a3f80c624e1e6b5eb0ef0d061f"`
[INFO] [stderr]    Compiling wavefront_obj v5.1.0
[INFO] [stderr]    Compiling tri-mesh v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/mesh/quality.rs:45:17
[INFO] [stderr]    |
[INFO] [stderr] 43 |                 let mut walker = self.walker_from_face(face_id);
[INFO] [stderr]    |                                  ---- immutable borrow occurs here
[INFO] [stderr] 44 |                 if let Some(twin_face_id) = walker.as_twin().face_id() { faces_to_test.remove(&twin_face_id); }
[INFO] [stderr] 45 |                 self.collapse_edge(walker.twin_id().unwrap());
[INFO] [stderr]    |                 ^^^^               ------ immutable borrow later used here
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(mutable_borrow_reservation_conflict)] on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.87s
[INFO] running `"docker" "inspect" "5f25b615f9e52af5a4fadfc4b9252329b388e0a3f80c624e1e6b5eb0ef0d061f"`
[INFO] running `"docker" "rm" "-f" "5f25b615f9e52af5a4fadfc4b9252329b388e0a3f80c624e1e6b5eb0ef0d061f"`
[INFO] [stdout] 5f25b615f9e52af5a4fadfc4b9252329b388e0a3f80c624e1e6b5eb0ef0d061f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/tri-mesh/0.4.0:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9d06591b1b69e0d826c6ba67b745ccb2be686950bff299bd036873706345b09a
[INFO] running `"docker" "start" "-a" "9d06591b1b69e0d826c6ba67b745ccb2be686950bff299bd036873706345b09a"`
[INFO] [stderr]    Compiling dust v0.1.0
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/dust-0.1.0/src/lib.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(quote, concat_idents, plugin_registrar, rustc_private)]
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `quote` in `ext`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/dust-0.1.0/src/lib.rs:11:18
[INFO] [stderr]    |
[INFO] [stderr] 11 | use syntax::ext::quote::rt::Span;
[INFO] [stderr]    |                  ^^^^^ could not find `quote` in `ext`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `syntax::codemap`
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/dust-0.1.0/src/function.rs:2:13
[INFO] [stderr]   |
[INFO] [stderr] 2 | use syntax::codemap::{Span};
[INFO] [stderr]   |             ^^^^^^^ could not find `codemap` in `syntax`
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_item!` in this scope
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/dust-0.1.0/src/lib.rs:48:36
[INFO] [stderr]    |
[INFO] [stderr] 48 |             push(Annotatable::Item(quote_item!(ecx,
[INFO] [stderr]    |                                    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Span` in this scope
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/dust-0.1.0/src/lib.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |         sp: Span,
[INFO] [stderr]    |             ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 9  | use syntax::source_map::Span;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Span` in this scope
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/dust-0.1.0/src/lib.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |         sp: Span,
[INFO] [stderr]    |             ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 9  | use syntax::source_map::Span;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/dust-0.1.0/src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(quote, concat_idents, plugin_registrar, rustc_private)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/dust-0.1.0/src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(custom_attribute)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 8 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0412, E0432, E0433, E0554, E0557.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] error: Could not compile `dust`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "9d06591b1b69e0d826c6ba67b745ccb2be686950bff299bd036873706345b09a"`
[INFO] running `"docker" "rm" "-f" "9d06591b1b69e0d826c6ba67b745ccb2be686950bff299bd036873706345b09a"`
[INFO] [stdout] 9d06591b1b69e0d826c6ba67b745ccb2be686950bff299bd036873706345b09a