[INFO] updating cached repository https://github.com/0e4ef622/remani
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 00b8238fee6b26947ae78464be7db7b66022011e
[INFO] testing 0e4ef622/remani against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2F0e4ef622%2Fremani" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/0e4ef622/remani on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/0e4ef622/remani
[INFO] finished tweaking git repo https://github.com/0e4ef622/remani
[INFO] tweaked toml for git repo https://github.com/0e4ef622/remani written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/0e4ef622/remani already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] c264fc4a6ea97754f0757d999e617edebf1133924cf3206f32db7939217a1d1d
[INFO] running `"docker" "start" "-a" "c264fc4a6ea97754f0757d999e617edebf1133924cf3206f32db7939217a1d1d"`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling instant v0.1.1
[INFO] [stderr]    Compiling alsa-sys v0.1.1 (https://github.com/0e4ef622/cpal?rev=buffer-size-request#99e1c5b3)
[INFO] [stderr]    Compiling simplemad_sys v0.5.0
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr]    Compiling daggy v0.5.0
[INFO] [stderr]    Compiling directories v1.0.2
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling gl_generator v0.10.0
[INFO] [stderr]    Compiling x11-dl v2.18.4
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling pistoncore-input v0.24.0
[INFO] [stderr]    Compiling rusttype v0.8.0
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling rayon v1.2.0
[INFO] [stderr]    Compiling rusttype v0.7.9
[INFO] [stderr]    Compiling cpal v0.8.2 (https://github.com/0e4ef622/cpal?rev=buffer-size-request#99e1c5b3)
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling glutin v0.19.0
[INFO] [stderr]    Compiling gl v0.11.0
[INFO] [stderr]    Compiling andrew v0.2.1
[INFO] [stderr]    Compiling piston2d-graphics v0.30.0
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling simplemad v0.9.0
[INFO] [stderr]    Compiling pistoncore-window v0.37.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.16
[INFO] [stderr]    Compiling wayland-commons v0.21.13
[INFO] [stderr]    Compiling wayland-client v0.21.13
[INFO] [stderr]    Compiling wayland-protocols v0.21.13
[INFO] [stderr]    Compiling pistoncore-event_loop v0.42.0
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling conrod_derive v0.67.0
[INFO] [stderr]    Compiling piston v0.42.0
[INFO] [stderr]    Compiling conrod_core v0.67.0
[INFO] [stderr]    Compiling smithay-client-toolkit v0.4.6
[INFO] [stderr]    Compiling tiff v0.2.2
[INFO] [stderr]    Compiling tiff v0.3.1
[INFO] [stderr]    Compiling image v0.21.3
[INFO] [stderr]    Compiling image v0.22.2
[INFO] [stderr]    Compiling winit v0.18.1
[INFO] [stderr]    Compiling conrod_piston v0.67.0
[INFO] [stderr]    Compiling piston2d-opengl_graphics v0.60.0
[INFO] [stderr]    Compiling pistoncore-glutin_window v0.54.0
[INFO] [stderr]    Compiling remani v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(inner_deref)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[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 `remani`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c264fc4a6ea97754f0757d999e617edebf1133924cf3206f32db7939217a1d1d"`
[INFO] running `"docker" "rm" "-f" "c264fc4a6ea97754f0757d999e617edebf1133924cf3206f32db7939217a1d1d"`
[INFO] [stdout] c264fc4a6ea97754f0757d999e617edebf1133924cf3206f32db7939217a1d1d