[INFO] crate objrs_macros 0.0.2 is already in cache
[INFO] extracting crate objrs_macros 0.0.2 into work/ex/beta-1.38-1/sources/1.37.0/reg/objrs_macros/0.0.2
[INFO] extracting crate objrs_macros 0.0.2 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/objrs_macros/0.0.2
[INFO] validating manifest of objrs_macros-0.0.2 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 objrs_macros-0.0.2 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 objrs_macros-0.0.2
[INFO] finished frobbing objrs_macros-0.0.2
[INFO] frobbed toml for objrs_macros-0.0.2 written to work/ex/beta-1.38-1/sources/1.37.0/reg/objrs_macros/0.0.2/Cargo.toml
[INFO] started frobbing objrs_macros-0.0.2
[INFO] finished frobbing objrs_macros-0.0.2
[INFO] frobbed toml for objrs_macros-0.0.2 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/objrs_macros/0.0.2/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing objrs_macros-0.0.2 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-7/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/objrs_macros/0.0.2:/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] fc0ff868f6acea883a5605254a16a27afa05e8fbae34c5769ce22e61a2a35bb8
[INFO] running `"docker" "start" "-a" "fc0ff868f6acea883a5605254a16a27afa05e8fbae34c5769ce22e61a2a35bb8"`
[INFO] [stderr]    Compiling objrs_macros v0.0.2 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | #![feature(proc_macro_diagnostic, proc_macro_span, proc_macro_def_site)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/class.rs:273:39
[INFO] [stderr]     |
[INFO] [stderr] 273 |   let mut generic_idents: Punctuated<&ToTokens, Comma> = Punctuated::new();
[INFO] [stderr]     |                                       ^^^^^^^^ help: use `dyn`: `dyn ToTokens`
[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/protocol.rs:309:39
[INFO] [stderr]     |
[INFO] [stderr] 309 |   let mut generic_idents: Punctuated<&ToTokens, syn::token::Comma> = Punctuated::new();
[INFO] [stderr]     |                                       ^^^^^^^^ help: use `dyn`: `dyn ToTokens`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/selector.rs:361:12
[INFO] [stderr]     |
[INFO] [stderr] 361 |   inline: &ToTokens,
[INFO] [stderr]     |            ^^^^^^^^ help: use `dyn`: `dyn ToTokens`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/selector.rs:717:33
[INFO] [stderr]     |
[INFO] [stderr] 717 |   let mut generics: Punctuated<&ToTokens, Comma> = Punctuated::new();
[INFO] [stderr]     |                                 ^^^^^^^^ help: use `dyn`: `dyn ToTokens`
[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 `objrs_macros`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "fc0ff868f6acea883a5605254a16a27afa05e8fbae34c5769ce22e61a2a35bb8"`
[INFO] running `"docker" "rm" "-f" "fc0ff868f6acea883a5605254a16a27afa05e8fbae34c5769ce22e61a2a35bb8"`
[INFO] [stdout] fc0ff868f6acea883a5605254a16a27afa05e8fbae34c5769ce22e61a2a35bb8