Dec 02 03:53:14.952 INFO testing RobertWHurst/Delta against 1.30.1 for beta-1.31-5
Dec 02 03:53:14.952 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/beta-1.31-5/1.30.1:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1.30.1 build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 03:53:15.166 INFO [stdout] 17ce0b9c639685ce37e066cfddc16dbf1478e4188b853e1297fa5d3bf551a5eb
Dec 02 03:53:15.169 INFO running `"docker" "start" "-a" "17ce0b9c639685ce37e066cfddc16dbf1478e4188b853e1297fa5d3bf551a5eb"`
Dec 02 03:53:16.353 INFO [stderr] usermod: no changes
Dec 02 03:53:16.601 INFO [stderr]    Compiling rand v0.3.15
Dec 02 03:53:16.605 INFO [stderr]    Compiling shared_library v0.1.7
Dec 02 03:53:16.612 INFO [stderr]    Compiling deflate v0.7.14
Dec 02 03:53:16.620 INFO [stderr]    Compiling x11-dl v2.14.0
Dec 02 03:53:16.623 INFO [stderr]    Compiling fs2 v0.2.5
Dec 02 03:53:18.403 INFO [stderr]    Compiling memmap v0.4.0
Dec 02 03:53:18.711 INFO [stderr]    Compiling osmesa-sys v0.1.2
Dec 02 03:53:20.399 INFO [stderr]    Compiling png v0.8.0
Dec 02 03:53:20.457 INFO [stderr]    Compiling phf_generator v0.7.21
Dec 02 03:53:20.457 INFO [stderr]    Compiling tempfile v2.1.6
Dec 02 03:53:20.457 INFO [stderr]    Compiling rayon-core v1.2.1
Dec 02 03:53:21.295 INFO [stderr]    Compiling phf_codegen v0.7.21
Dec 02 03:53:22.742 INFO [stderr]    Compiling target_build_utils v0.3.1
Dec 02 03:53:23.387 INFO [stderr]    Compiling rayon v0.8.2
Dec 02 03:53:27.476 INFO [stderr]    Compiling jpeg-decoder v0.1.13
Dec 02 03:53:29.884 INFO [stderr]    Compiling image v0.14.0
Dec 02 03:53:33.655 INFO [stderr]    Compiling libloading v0.3.4
Dec 02 03:53:38.955 INFO [stderr]    Compiling dlib v0.3.1
Dec 02 03:53:39.607 INFO [stderr]    Compiling wayland-sys v0.9.9
Dec 02 03:53:43.401 INFO [stderr]    Compiling wayland-client v0.9.9
Dec 02 03:53:51.555 INFO [stderr]    Compiling wayland-window v0.6.1
Dec 02 03:53:51.556 INFO [stderr]    Compiling wayland-kbd v0.9.1
Dec 02 03:53:54.399 INFO [stderr]    Compiling winit v0.7.5
Dec 02 03:53:59.625 INFO [stderr]    Compiling glutin v0.9.2
Dec 02 03:54:02.647 INFO [stderr]    Compiling delta v0.1.0 (/source)
Dec 02 03:54:04.369 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 03:54:04.369 INFO [stderr]  --> src/lib.rs:1:1
Dec 02 03:54:04.375 INFO [stderr]   |
Dec 02 03:54:04.375 INFO [stderr] 1 | #![feature(associated_type_defaults)]
Dec 02 03:54:04.375 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 03:54:04.375 INFO [stderr] 
Dec 02 03:54:04.375 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 03:54:04.375 INFO [stderr]  --> src/lib.rs:2:1
Dec 02 03:54:04.375 INFO [stderr]   |
Dec 02 03:54:04.375 INFO [stderr] 2 | #![feature(box_syntax)]
Dec 02 03:54:04.375 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 03:54:04.375 INFO [stderr] 
Dec 02 03:54:04.375 INFO [stderr] error: aborting due to 2 previous errors
Dec 02 03:54:04.375 INFO [stderr] 
Dec 02 03:54:04.375 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 03:54:04.385 INFO [stderr] error: Could not compile `delta`.
Dec 02 03:54:04.386 INFO [stderr] 
Dec 02 03:54:04.386 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 03:54:04.387 INFO [stderr] su: No module specific data is present
Dec 02 03:54:05.404 INFO running `"docker" "inspect" "17ce0b9c639685ce37e066cfddc16dbf1478e4188b853e1297fa5d3bf551a5eb"`
Dec 02 03:54:05.713 INFO running `"docker" "rm" "-f" "17ce0b9c639685ce37e066cfddc16dbf1478e4188b853e1297fa5d3bf551a5eb"`
Dec 02 03:54:06.038 INFO [stdout] 17ce0b9c639685ce37e066cfddc16dbf1478e4188b853e1297fa5d3bf551a5eb