[INFO] crate remarkable 0.0.1 is already in cache
[INFO] extracting crate remarkable 0.0.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/remarkable/0.0.1
[INFO] extracting crate remarkable 0.0.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/remarkable/0.0.1
[INFO] validating manifest of remarkable-0.0.1 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 remarkable-0.0.1 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 remarkable-0.0.1
[INFO] removed 0 missing examples
[INFO] finished frobbing remarkable-0.0.1
[INFO] frobbed toml for remarkable-0.0.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/remarkable/0.0.1/Cargo.toml
[INFO] started frobbing remarkable-0.0.1
[INFO] removed 0 missing examples
[INFO] finished frobbing remarkable-0.0.1
[INFO] frobbed toml for remarkable-0.0.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/remarkable/0.0.1/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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing remarkable-0.0.1 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/remarkable/0.0.1:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 91b7036d8e2fa35ca26fc51b029e8fbe39dff86a7265d1124c14e687c4e43cf1
[INFO] running `"docker" "start" "-a" "91b7036d8e2fa35ca26fc51b029e8fbe39dff86a7265d1124c14e687c4e43cf1"`
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling bitflags v0.8.2
[INFO] [stderr]    Compiling ioctl-gen v0.1.1
[INFO] [stderr]    Compiling rb v0.3.2
[INFO] [stderr]    Compiling inflate v0.3.4
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling aabb-quadtree v0.1.0
[INFO] [stderr]    Compiling nix v0.8.1
[INFO] [stderr]    Compiling epoll v3.1.1
[INFO] [stderr]    Compiling ordered-float v0.5.2
[INFO] [stderr]    Compiling mmap v0.1.1
[INFO] [stderr]    Compiling rusttype v0.4.3
[INFO] [stderr]    Compiling png v0.11.0
[INFO] [stderr]    Compiling image v0.18.0
[INFO] [stderr]    Compiling evdev v0.10.1
[INFO] [stderr]    Compiling remarkable v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(integer_atomics)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[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(const_size_of)]
[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 `remarkable`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "91b7036d8e2fa35ca26fc51b029e8fbe39dff86a7265d1124c14e687c4e43cf1"`
[INFO] running `"docker" "rm" "-f" "91b7036d8e2fa35ca26fc51b029e8fbe39dff86a7265d1124c14e687c4e43cf1"`
[INFO] [stdout] 91b7036d8e2fa35ca26fc51b029e8fbe39dff86a7265d1124c14e687c4e43cf1