[INFO] crate ironstorm_lookup 1.0.4 is already in cache
[INFO] extracting crate ironstorm_lookup 1.0.4 into work/ex/beta-1.38-1/sources/1.37.0/reg/ironstorm_lookup/1.0.4
[INFO] extracting crate ironstorm_lookup 1.0.4 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ironstorm_lookup/1.0.4
[INFO] validating manifest of ironstorm_lookup-1.0.4 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 ironstorm_lookup-1.0.4 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 ironstorm_lookup-1.0.4
[INFO] finished frobbing ironstorm_lookup-1.0.4
[INFO] frobbed toml for ironstorm_lookup-1.0.4 written to work/ex/beta-1.38-1/sources/1.37.0/reg/ironstorm_lookup/1.0.4/Cargo.toml
[INFO] started frobbing ironstorm_lookup-1.0.4
[INFO] finished frobbing ironstorm_lookup-1.0.4
[INFO] frobbed toml for ironstorm_lookup-1.0.4 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ironstorm_lookup/1.0.4/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 ironstorm_lookup-1.0.4 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/ironstorm_lookup/1.0.4:/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] 12df131c504d831b262f0544e91b9ed804240c9d73f1a149f79bd3850bc7ad70
[INFO] running `"docker" "start" "-a" "12df131c504d831b262f0544e91b9ed804240c9d73f1a149f79bd3850bc7ad70"`
[INFO] [stderr]    Compiling suffix v1.1.0
[INFO] [stderr]    Compiling ironstorm_lookup v1.0.4 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(btree_range, collections_bound)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:198:56
[INFO] [stderr]     |
[INFO] [stderr] 198 |     pub fn find(&'a self, search_text: &'a str) -> Box<Iterator<Item=&V> + Send + 'a> {
[INFO] [stderr]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=&V> + Send + 'a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0061]: this function takes 1 parameter but 2 parameters were supplied
[INFO] [stderr]    --> src/lib.rs:184:48
[INFO] [stderr]     |
[INFO] [stderr] 184 |         if let Some(value) = self.position_map.range(Unbounded, Included(&(bucket,(text_position as usize)))).rev().next() {
[INFO] [stderr]     |                                                ^^^^^ expected 1 parameter
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0061, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0061`.
[INFO] [stderr] error: Could not compile `ironstorm_lookup`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "12df131c504d831b262f0544e91b9ed804240c9d73f1a149f79bd3850bc7ad70"`
[INFO] running `"docker" "rm" "-f" "12df131c504d831b262f0544e91b9ed804240c9d73f1a149f79bd3850bc7ad70"`
[INFO] [stdout] 12df131c504d831b262f0544e91b9ed804240c9d73f1a149f79bd3850bc7ad70