[INFO] crate fae 0.4.0 is already in cache
[INFO] extracting crate fae 0.4.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/fae/0.4.0
[INFO] extracting crate fae 0.4.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/fae/0.4.0
[INFO] validating manifest of fae-0.4.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of fae-0.4.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing fae-0.4.0
[INFO] finished frobbing fae-0.4.0
[INFO] frobbed toml for fae-0.4.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/fae/0.4.0/Cargo.toml
[INFO] started frobbing fae-0.4.0
[INFO] finished frobbing fae-0.4.0
[INFO] frobbed toml for fae-0.4.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/fae/0.4.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing fae-0.4.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/fae/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 0dc274dd07991fe35f7148799f97cae7ccfce67e5be0ba6b713499fb3d6fadf4
[INFO] running `"docker" "start" "-a" "0dc274dd07991fe35f7148799f97cae7ccfce67e5be0ba6b713499fb3d6fadf4"`
[INFO] [stderr]    Compiling ordered-float v1.0.2
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling fae v0.4.0 (/opt/crater/workdir)
[INFO] [stderr]    Compiling rustc-hash v1.0.1
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling png v0.14.1
[INFO] [stderr]    Compiling rusttype v0.7.7
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> /opt/crater/target/debug/build/fae-c069650be1256286/out/gl_bindings.rs:9:36
[INFO] [stderr]   |
[INFO] [stderr] 9 |         fn metaloadfn(loadfn: &mut FnMut(&'static str) -> *const __gl_imports::raw::c_void,
[INFO] [stderr]   |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&'static str) -> *const __gl_imports::raw::c_void`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/image.rs:34:56
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn from_png(bytes: &[u8]) -> Result<Image, Box<Error>> {
[INFO] [stderr]    |                                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/text.rs:75:35
[INFO] [stderr]    |
[INFO] [stderr] 75 |     ) -> Result<TextRenderer, Box<Error>> {
[INFO] [stderr]    |                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/window/window_dummy.rs:108:68
[INFO] [stderr]     |
[INFO] [stderr] 108 |     pub fn create(settings: &WindowSettings) -> Result<Window, Box<Error>> {
[INFO] [stderr]     |                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/window/window_dummy.rs:148:32
[INFO] [stderr]     |
[INFO] [stderr] 148 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `fae`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "0dc274dd07991fe35f7148799f97cae7ccfce67e5be0ba6b713499fb3d6fadf4"`
[INFO] running `"docker" "rm" "-f" "0dc274dd07991fe35f7148799f97cae7ccfce67e5be0ba6b713499fb3d6fadf4"`
[INFO] [stdout] 0dc274dd07991fe35f7148799f97cae7ccfce67e5be0ba6b713499fb3d6fadf4