[INFO] crate elfloader 0.0.5 is already in cache
[INFO] extracting crate elfloader 0.0.5 into work/ex/beta-1.38-1/sources/1.37.0/reg/elfloader/0.0.5
[INFO] extracting crate elfloader 0.0.5 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/elfloader/0.0.5
[INFO] validating manifest of elfloader-0.0.5 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 elfloader-0.0.5 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 elfloader-0.0.5
[INFO] finished frobbing elfloader-0.0.5
[INFO] frobbed toml for elfloader-0.0.5 written to work/ex/beta-1.38-1/sources/1.37.0/reg/elfloader/0.0.5/Cargo.toml
[INFO] started frobbing elfloader-0.0.5
[INFO] finished frobbing elfloader-0.0.5
[INFO] frobbed toml for elfloader-0.0.5 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/elfloader/0.0.5/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 elfloader-0.0.5 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/elfloader/0.0.5:/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] 96a4ae3a3d5a5d6f791c331f0075215cd119a255c8480a88ecfc88dac4a8bf89
[INFO] running `"docker" "start" "-a" "96a4ae3a3d5a5d6f791c331f0075215cd119a255c8480a88ecfc88dac4a8bf89"`
[INFO] [stderr]    Compiling elfloader v0.0.5 (/opt/crater/workdir)
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> src/lib.rs:1:48
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(core, core_prelude, core_slice_ext, custom_derive)]
[INFO] [stderr]   |                                                ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: subsumed by `#[proc_macro_derive]`
[INFO] [stderr]  --> src/lib.rs:1:48
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(core, core_prelude, core_slice_ext, custom_derive)]
[INFO] [stderr]   |                                                ^^^^^^^^^^^^^
[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(core, core_prelude, core_slice_ext, custom_derive)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:185:64
[INFO] [stderr]     |
[INFO] [stderr] 185 |     fn load_header(&self, p: &elf::ProgramHeader, loader: &mut ElfLoader) {
[INFO] [stderr]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn ElfLoader`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:202:37
[INFO] [stderr]     |
[INFO] [stderr] 202 |     pub fn load(&self, loader: &mut ElfLoader) {
[INFO] [stderr]     |                                     ^^^^^^^^^ help: use `dyn`: `dyn ElfLoader`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0557.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `elfloader`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "96a4ae3a3d5a5d6f791c331f0075215cd119a255c8480a88ecfc88dac4a8bf89"`
[INFO] running `"docker" "rm" "-f" "96a4ae3a3d5a5d6f791c331f0075215cd119a255c8480a88ecfc88dac4a8bf89"`
[INFO] [stdout] 96a4ae3a3d5a5d6f791c331f0075215cd119a255c8480a88ecfc88dac4a8bf89