[INFO] crate e2r 0.10.0 is already in cache
[INFO] extracting crate e2r 0.10.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/e2r/0.10.0
[INFO] extracting crate e2r 0.10.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/e2r/0.10.0
[INFO] validating manifest of e2r-0.10.0 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 e2r-0.10.0 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 e2r-0.10.0
[INFO] finished frobbing e2r-0.10.0
[INFO] frobbed toml for e2r-0.10.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/e2r/0.10.0/Cargo.toml
[INFO] started frobbing e2r-0.10.0
[INFO] finished frobbing e2r-0.10.0
[INFO] frobbed toml for e2r-0.10.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/e2r/0.10.0/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 e2r-0.10.0 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-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/e2r/0.10.0:/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] a925d08f4212c82c870dbe7f10165aeec44613d914d1ab56012a5e7062f81eb8
[INFO] running `"docker" "start" "-a" "a925d08f4212c82c870dbe7f10165aeec44613d914d1ab56012a5e7062f81eb8"`
[INFO] [stderr]    Compiling zpatial v0.0.0
[INFO] [stderr]    Compiling mazth v0.2.1
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.3
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.5
[INFO] [stderr]    Compiling wayland-commons v0.21.13
[INFO] [stderr]    Compiling pretty_env_logger v0.2.5
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling wayland-client v0.21.13
[INFO] [stderr]    Compiling image v0.17.0
[INFO] [stderr]    Compiling wayland-protocols v0.21.13
[INFO] [stderr]    Compiling smithay-client-toolkit v0.4.6
[INFO] [stderr]    Compiling winit v0.19.2
[INFO] [stderr]    Compiling glutin v0.20.0
[INFO] [stderr]    Compiling e2r v0.10.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> core/core.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(type_ascription)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> core/core.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(associated_type_defaults)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `interface::i_file::IParseStr`
[INFO] [stderr]   --> core/implement/file/wavefrontobj.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use interface::i_file::IParseStr;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]  --> core/implement/file/wavefrontcomp.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::str::FromStr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::f32`
[INFO] [stderr]  --> core/implement/file/wavefrontcomp.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::f32;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::nom::digit`
[INFO] [stderr]   --> core/implement/file/wavefrontcomp.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use self::nom::digit;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::glutin::Context`
[INFO] [stderr]  --> core/implement/window/winglutin.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use self::glutin::Context;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `PhysicalPosition`, `PhysicalSize`
[INFO] [stderr]  --> core/implement/window/winglutin.rs:7:37
[INFO] [stderr]   |
[INFO] [stderr] 7 | use self::glutin::dpi::{LogicalSize,PhysicalSize,PhysicalPosition};
[INFO] [stderr]   |                                     ^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `interface::i_interpolate::*`
[INFO] [stderr]  --> core/implement/cam/camguide.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use interface::i_interpolate::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::mazth::mat::*`
[INFO] [stderr]  --> core/implement/cam/camguide.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use self::mazth::mat::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::mazth::i_comparable::IComparableError`
[INFO] [stderr]   --> core/implement/cam/camguide.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use self::mazth::i_comparable::IComparableError;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `interface::i_interpolate::IInterpolate`
[INFO] [stderr]   --> core/implement/cam/camguide.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use interface::i_interpolate::IInterpolate;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `interface::i_step::Step`
[INFO] [stderr]   --> core/implement/cam/camguide.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use interface::i_step::Step;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `implement::step::step_interpolate`
[INFO] [stderr]   --> core/implement/cam/camguide.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use implement::step::step_interpolate;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `e2r`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a925d08f4212c82c870dbe7f10165aeec44613d914d1ab56012a5e7062f81eb8"`
[INFO] running `"docker" "rm" "-f" "a925d08f4212c82c870dbe7f10165aeec44613d914d1ab56012a5e7062f81eb8"`
[INFO] [stdout] a925d08f4212c82c870dbe7f10165aeec44613d914d1ab56012a5e7062f81eb8