[INFO] crate bitstream 0.1.1 is already in cache
[INFO] extracting crate bitstream 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/bitstream/0.1.1
[INFO] extracting crate bitstream 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/bitstream/0.1.1
[INFO] validating manifest of bitstream-0.1.1 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 bitstream-0.1.1 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 bitstream-0.1.1
[INFO] finished frobbing bitstream-0.1.1
[INFO] frobbed toml for bitstream-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/bitstream/0.1.1/Cargo.toml
[INFO] started frobbing bitstream-0.1.1
[INFO] finished frobbing bitstream-0.1.1
[INFO] frobbed toml for bitstream-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/bitstream/0.1.1/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 bitstream-0.1.1 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/bitstream/0.1.1:/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] 6e60627ad4b5c89dae28e16bc651363fb0be40f26619c3ae81acebc2fe759cfa
[INFO] running `"docker" "start" "-a" "6e60627ad4b5c89dae28e16bc651363fb0be40f26619c3ae81acebc2fe759cfa"`
[INFO] [stderr]    Compiling bitstream v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved import `alloc::heap`
[INFO] [stderr]   --> src/lib.rs:13:20
[INFO] [stderr]    |
[INFO] [stderr] 13 |         use alloc::heap::allocate;
[INFO] [stderr]    |                    ^^^^ could not find `heap` in `alloc`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `alloc::heap`
[INFO] [stderr]   --> src/lib.rs:19:20
[INFO] [stderr]    |
[INFO] [stderr] 19 |         use alloc::heap::deallocate;
[INFO] [stderr]    |                    ^^^^ could not find `heap` in `alloc`
[INFO] [stderr] 
[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(alloc, heap_api)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reader.rs:42:32
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `bitstream`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "6e60627ad4b5c89dae28e16bc651363fb0be40f26619c3ae81acebc2fe759cfa"`
[INFO] running `"docker" "rm" "-f" "6e60627ad4b5c89dae28e16bc651363fb0be40f26619c3ae81acebc2fe759cfa"`
[INFO] [stdout] 6e60627ad4b5c89dae28e16bc651363fb0be40f26619c3ae81acebc2fe759cfa