[INFO] crate maud_lints 0.18.1 is already in cache
[INFO] extracting crate maud_lints 0.18.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/maud_lints/0.18.1
[INFO] extracting crate maud_lints 0.18.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/maud_lints/0.18.1
[INFO] validating manifest of maud_lints-0.18.1 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 maud_lints-0.18.1 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 maud_lints-0.18.1
[INFO] finished frobbing maud_lints-0.18.1
[INFO] frobbed toml for maud_lints-0.18.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/maud_lints/0.18.1/Cargo.toml
[INFO] started frobbing maud_lints-0.18.1
[INFO] finished frobbing maud_lints-0.18.1
[INFO] frobbed toml for maud_lints-0.18.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/maud_lints/0.18.1/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 maud_lints-0.18.1 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/maud_lints/0.18.1:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 8f98bcb75814e5b6d2c1e541c13b9de01d3d45253ba6540287a4cc6fc64957c9
[INFO] running `"docker" "start" "-a" "8f98bcb75814e5b6d2c1e541c13b9de01d3d45253ba6540287a4cc6fc64957c9"`
[INFO] [stderr]    Compiling if_chain v0.1.3
[INFO] [stderr]    Compiling maud_lints v0.18.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: could not find `item_path` in `ty`
[INFO] [stderr]   --> src/util.rs:21:14
[INFO] [stderr]    |
[INFO] [stderr] 21 |     impl ty::item_path::ItemPathBuffer for AbsolutePathBuffer {
[INFO] [stderr]    |              ^^^^^^^^^ could not find `item_path` in `ty`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `item_path` in `ty`
[INFO] [stderr]   --> src/util.rs:22:37
[INFO] [stderr]    |
[INFO] [stderr] 22 |         fn root_mode(&self) -> &ty::item_path::RootMode {
[INFO] [stderr]    |                                     ^^^^^^^^^ could not find `item_path` in `ty`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `item_path` in `ty`
[INFO] [stderr]   --> src/util.rs:23:18
[INFO] [stderr]    |
[INFO] [stderr] 23 |             &ty::item_path::RootMode::Absolute
[INFO] [stderr]    |                  ^^^^^^^^^ could not find `item_path` in `ty`
[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(plugin_registrar)]
[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(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:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(macro_at_most_once_rep)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(macro_vis_matcher)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 7 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0433, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0433`.
[INFO] [stderr] error: Could not compile `maud_lints`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "8f98bcb75814e5b6d2c1e541c13b9de01d3d45253ba6540287a4cc6fc64957c9"`
[INFO] running `"docker" "rm" "-f" "8f98bcb75814e5b6d2c1e541c13b9de01d3d45253ba6540287a4cc6fc64957c9"`
[INFO] [stdout] 8f98bcb75814e5b6d2c1e541c13b9de01d3d45253ba6540287a4cc6fc64957c9