[INFO] crate rls-rustc 0.5.0 is already in cache
[INFO] extracting crate rls-rustc 0.5.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/rls-rustc/0.5.0
[INFO] extracting crate rls-rustc 0.5.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rls-rustc/0.5.0
[INFO] validating manifest of rls-rustc-0.5.0 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 rls-rustc-0.5.0 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 rls-rustc-0.5.0
[INFO] finished frobbing rls-rustc-0.5.0
[INFO] frobbed toml for rls-rustc-0.5.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/rls-rustc/0.5.0/Cargo.toml
[INFO] started frobbing rls-rustc-0.5.0
[INFO] finished frobbing rls-rustc-0.5.0
[INFO] frobbed toml for rls-rustc-0.5.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rls-rustc/0.5.0/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 rls-rustc-0.5.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rls-rustc/0.5.0:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] de30afdff8a24a7467096c8a8aa1ef0bc8ede2b7f1c81d2bbe226d168732579f
[INFO] running `"docker" "start" "-a" "de30afdff8a24a7467096c8a8aa1ef0bc8ede2b7f1c81d2bbe226d168732579f"`
[INFO] [stderr]    Compiling rls-rustc v0.5.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved import `rustc_driver::driver`
[INFO] [stderr]   --> src/lib.rs:17:19
[INFO] [stderr]    |
[INFO] [stderr] 17 | use rustc_driver::driver::CompileController;
[INFO] [stderr]    |                   ^^^^^^ could not find `driver` in `rustc_driver`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved imports `rustc_driver::CompilerCalls`, `rustc_driver::enable_save_analysis`
[INFO] [stderr]   --> src/lib.rs:18:34
[INFO] [stderr]    |
[INFO] [stderr] 18 | use rustc_driver::{run_compiler, CompilerCalls, RustcDefaultCalls, Compilation, enable_save_analysis};
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^ no `CompilerCalls` in the root   ^^^^^^^^^^^^^^^^^^^^ no `enable_save_analysis` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `run` in crate `rustc_driver`
[INFO] [stderr]   --> src/lib.rs:27:32
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let result = rustc_driver::run(|| {
[INFO] [stderr]    |                                ^^^ not found in `rustc_driver`
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]    |
[INFO] [stderr] 13 | use run;
[INFO] [stderr]    |
[INFO] [stderr] 13 | use syntax::show_span::run;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(rustc_private)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(box_syntax)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:58:26
[INFO] [stderr]    |
[INFO] [stderr] 58 |                      a: &CodegenBackend,
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^ help: use `dyn`: `dyn CodegenBackend`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `rls-rustc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "de30afdff8a24a7467096c8a8aa1ef0bc8ede2b7f1c81d2bbe226d168732579f"`
[INFO] running `"docker" "rm" "-f" "de30afdff8a24a7467096c8a8aa1ef0bc8ede2b7f1c81d2bbe226d168732579f"`
[INFO] [stdout] de30afdff8a24a7467096c8a8aa1ef0bc8ede2b7f1c81d2bbe226d168732579f