[INFO] crate overload-strings 0.1.1 is already in cache
[INFO] extracting crate overload-strings 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/overload-strings/0.1.1
[INFO] extracting crate overload-strings 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/overload-strings/0.1.1
[INFO] validating manifest of overload-strings-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 overload-strings-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 overload-strings-0.1.1
[INFO] finished frobbing overload-strings-0.1.1
[INFO] frobbed toml for overload-strings-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/overload-strings/0.1.1/Cargo.toml
[INFO] started frobbing overload-strings-0.1.1
[INFO] finished frobbing overload-strings-0.1.1
[INFO] frobbed toml for overload-strings-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/overload-strings/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 overload-strings-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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/overload-strings/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] 55ca4c06ea7ff55089143a7df2b51e4692d788da259bf6a4640a7e6feadc5382
[INFO] running `"docker" "start" "-a" "55ca4c06ea7ff55089143a7df2b51e4692d788da259bf6a4640a7e6feadc5382"`
[INFO] [stderr]    Compiling overload-strings v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> src/lib.rs:1:30
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(plugin_registrar, quote, rustc_private)]
[INFO] [stderr]   |                              ^^^^^ feature has been removed
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `syntax::codemap`
[INFO] [stderr]  --> src/lib.rs:8:13
[INFO] [stderr]   |
[INFO] [stderr] 8 | use syntax::codemap::Span;
[INFO] [stderr]   |             ^^^^^^^ could not find `codemap` in `syntax`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved imports `syntax::fold`, `syntax::fold`
[INFO] [stderr]  --> src/lib.rs:9:20
[INFO] [stderr]   |
[INFO] [stderr] 9 | use syntax::fold::{self, Folder};
[INFO] [stderr]   |             ^^^^   ^^^^ no `fold` in the root
[INFO] [stderr]   |             |
[INFO] [stderr]   |             could not find `fold` in `syntax`
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr!` in this scope
[INFO] [stderr]   --> src/lib.rs:47:24
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 return quote_expr!(self.0, $e.into());
[INFO] [stderr]    |                        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0532]: expected tuple struct/variant, found unit variant `MetaItemKind::Word`
[INFO] [stderr]   --> src/lib.rs:23:17
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 MetaItemKind::Word(ref name) if name == ATTR_NAME => true,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^ not a tuple struct/variant
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `intern` in module `token`
[INFO] [stderr]   --> src/lib.rs:73:42
[INFO] [stderr]    |
[INFO] [stderr] 73 |     reg.register_syntax_extension(token::intern(ATTR_NAME),
[INFO] [stderr]    |                                          ^^^^^^ not found in `token`
[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(plugin_registrar, quote, rustc_private)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 7 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0432, E0532, E0554, E0557.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `overload-strings`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "55ca4c06ea7ff55089143a7df2b51e4692d788da259bf6a4640a7e6feadc5382"`
[INFO] running `"docker" "rm" "-f" "55ca4c06ea7ff55089143a7df2b51e4692d788da259bf6a4640a7e6feadc5382"`
[INFO] [stdout] 55ca4c06ea7ff55089143a7df2b51e4692d788da259bf6a4640a7e6feadc5382