[INFO] crate bolt11 0.1.0 is already in cache
[INFO] extracting crate bolt11 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/bolt11/0.1.0
[INFO] extracting crate bolt11 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/bolt11/0.1.0
[INFO] validating manifest of bolt11-0.1.0 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 bolt11-0.1.0 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 bolt11-0.1.0
[INFO] finished frobbing bolt11-0.1.0
[INFO] frobbed toml for bolt11-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/bolt11/0.1.0/Cargo.toml
[INFO] started frobbing bolt11-0.1.0
[INFO] finished frobbing bolt11-0.1.0
[INFO] frobbed toml for bolt11-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/bolt11/0.1.0/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 bolt11-0.1.0 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/bolt11/0.1.0:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 3e241ff38c124b1aef93882da561d0a0d3a078f831d18a4ca489c63ee6f9afbc
[INFO] running `"docker" "start" "-a" "3e241ff38c124b1aef93882da561d0a0d3a078f831d18a4ca489c63ee6f9afbc"`
[INFO] [stderr]    Compiling base58 v0.1.0
[INFO] [stderr]    Compiling bech32 v0.2.2
[INFO] [stderr]    Compiling bitcoin-bech32 v0.3.1
[INFO] [stderr]    Compiling base58check v0.0.1
[INFO] [stderr]    Compiling bolt11 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/tag.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  |   /// Bech32 alphabet.
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 10 | / lazy_static! {
[INFO] [stderr] 11 | |     static ref BECH32_ALPHABET: HashMap<char, u8> =
[INFO] [stderr] 12 | |         hashmap!['q' => 0,'p' => 1,'z' => 2,'r' => 3,'y' => 4,'9' => 5,'x' => 6,'8' => 7,'g' => 8,
[INFO] [stderr] 13 | |         'f' => 9,'2' => 10,'t' => 11,'v' => 12,'d' => 13,'w' => 14,'0' => 15,'s' => 16,'3' => 17,
[INFO] [stderr] 14 | |         'j' => 18,'n' => 19,'5' => 20,'4' => 21,'k' => 22,'h' => 23, 'c' => 24, 'e' => 25,'6' => 26,
[INFO] [stderr] 15 | |         'm' => 27,'u' => 28,'a' => 29,'7' => 30,'l' => 31];
[INFO] [stderr] 16 | | }
[INFO] [stderr]    | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/types.rs:80:32
[INFO] [stderr]    |
[INFO] [stderr] 80 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0034]: multiple applicable items in scope
[INFO] [stderr]    --> src/payment_request.rs:207:14
[INFO] [stderr]     |
[INFO] [stderr] 207 |             .flatten()
[INFO] [stderr]     |              ^^^^^^^ multiple `flatten` found
[INFO] [stderr]     |
[INFO] [stderr]     = note: candidate #1 is defined in an impl of the trait `std::iter::Iterator` for the type `std::iter::FilterMap<_, _>`
[INFO] [stderr]     = note: candidate #2 is defined in an impl of the trait `itertools::Itertools` for the type `_`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0034`.
[INFO] [stderr] error: Could not compile `bolt11`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3e241ff38c124b1aef93882da561d0a0d3a078f831d18a4ca489c63ee6f9afbc"`
[INFO] running `"docker" "rm" "-f" "3e241ff38c124b1aef93882da561d0a0d3a078f831d18a4ca489c63ee6f9afbc"`
[INFO] [stdout] 3e241ff38c124b1aef93882da561d0a0d3a078f831d18a4ca489c63ee6f9afbc