[INFO] updating cached repository ThatsGobbles/taggu-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ThatsGobbles/taggu-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ThatsGobbles/taggu-rust" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/ThatsGobbles/taggu-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/ThatsGobbles/taggu-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ThatsGobbles/taggu-rust" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/ThatsGobbles/taggu-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/ThatsGobbles/taggu-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5a400888540da38362bbec2a1a450916aea5024d
[INFO] sha for GitHub repo ThatsGobbles/taggu-rust: 5a400888540da38362bbec2a1a450916aea5024d
[INFO] validating manifest of ThatsGobbles/taggu-rust on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ThatsGobbles/taggu-rust on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ThatsGobbles/taggu-rust
[INFO] finished frobbing ThatsGobbles/taggu-rust
[INFO] frobbed toml for ThatsGobbles/taggu-rust written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/ThatsGobbles/taggu-rust/Cargo.toml
[INFO] started frobbing ThatsGobbles/taggu-rust
[INFO] finished frobbing ThatsGobbles/taggu-rust
[INFO] frobbed toml for ThatsGobbles/taggu-rust written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/ThatsGobbles/taggu-rust/Cargo.toml
[INFO] crate ThatsGobbles/taggu-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ThatsGobbles/taggu-rust against try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-2/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/ThatsGobbles/taggu-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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=forbid" "-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" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1fde215cfc3c3d3b068ee619051ff8842e4f6c215a7ace6722d24a0bd6343b57
[INFO] running `"docker" "start" "-a" "1fde215cfc3c3d3b068ee619051ff8842e4f6c215a7ace6722d24a0bd6343b57"`
[INFO] [stderr]     Checking maplit v1.0.0
[INFO] [stderr]     Checking tempdir v0.3.5
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking taggu v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Metadata`
[INFO] [stderr]  --> src/metadata/reader/mod.rs:7:16
[INFO] [stderr]   |
[INFO] [stderr] 7 | use metadata::{Metadata, MetaTarget, PathMetaListing};
[INFO] [stderr]   |                ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0720]: opaque type expands to a recursive type
[INFO] [stderr]    --> src/metadata/mod.rs:149:63
[INFO] [stderr]     |
[INFO] [stderr] 149 |     pub fn iter_over<'a>(&'a self, mis: MappingIterScheme) -> impl Iterator<Item = &'a String> {
[INFO] [stderr]     |                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expands to self-referential type
[INFO] [stderr]     |
[INFO] [stderr]     = note: expanded type is `generator::GenConverter::gen_to_iter::It<[generator@src/metadata/mod.rs:150:23: 184:10 self:&'a metadata::MetaValue, mis:metadata::MappingIterScheme for<'r, 's, 't0, 't1, 't2, 't3, 't4, 't5, 't6, 't7, 't8, 't9, 't10, 't11, 't12, 't13, 't14, 't15, 't16, 't17, 't18, 't19, 't20, 't21, 't22, 't23, 't24, 't25, 't26, 't27, 't28, 't29, 't30, 't31, 't32, 't33, 't34, 't35, 't36, 't37, 't38, 't39, 't40, 't41> {&'r metadata::MetaValue, metadata::MetaValue, &'s std::string::String, (), &'t0 std::vec::Vec<metadata::MetaValue>, fn(&'t1 std::vec::Vec<metadata::MetaValue>) -> <&'t1 std::vec::Vec<metadata::MetaValue> as std::iter::IntoIterator>::IntoIter {<&'t1 std::vec::Vec<metadata::MetaValue> as std::iter::IntoIterator>::into_iter}, std::slice::Iter<'t2, metadata::MetaValue>, std::slice::Iter<'t3, metadata::MetaValue>, &'t4 metadata::MetaValue, &'t5 metadata::MetaValue, fn(std::boxed::Box<impl std::iter::Iterator>) -> <std::boxed::Box<impl std::iter::Iterator> as std::iter::IntoIterator>::IntoIter {<std::boxed::Box<impl std::iter::Iterator> as std::iter::IntoIterator>::into_iter}, fn(impl std::iter::Iterator) -> std::boxed::Box<impl std::iter::Iterator> {<std::boxed::Box<T>><impl std::iter::Iterator>::new}, &'t8 metadata::MetaValue, metadata::MappingIterScheme, impl std::iter::Iterator, std::boxed::Box<impl std::iter::Iterator>, std::boxed::Box<impl std::iter::Iterator>, std::boxed::Box<impl std::iter::Iterator>, &'t13 std::string::String, &'t14 std::string::String, std::string::String, &'t15 std::string::String, &'t16 std::collections::BTreeMap<metadata::MetaKey, metadata::MetaValue>, fn(&'t17 std::collections::BTreeMap<metadata::MetaKey, metadata::MetaValue>) -> <&'t17 std::collections::BTreeMap<metadata::MetaKey, metadata::MetaValue> as std::iter::IntoIterator>::IntoIter {<&'t17 std::collections::BTreeMap<metadata::MetaKey, metadata::MetaValue> as std::iter::IntoIterator>::into_iter}, std::collections::btree_map::Iter<'t18, metadata::MetaKey, metadata::MetaValue>, std::collections::btree_map::Iter<'t19, metadata::MetaKey, metadata::MetaValue>, (&'t20 metadata::MetaKey, &'t21 metadata::MetaValue), &'t22 metadata::MetaKey, &'t23 metadata::MetaValue, fn(std::boxed::Box<impl std::iter::Iterator>) -> <std::boxed::Box<impl std::iter::Iterator> as std::iter::IntoIterator>::IntoIter {<std::boxed::Box<impl std::iter::Iterator> as std::iter::IntoIterator>::into_iter}, fn(impl std::iter::Iterator) -> std::boxed::Box<impl std::iter::Iterator> {<std::boxed::Box<T>><impl std::iter::Iterator>::new}, metadata::MetaKey, &'t26 metadata::MetaKey, impl std::iter::Iterator, std::boxed::Box<impl std::iter::Iterator>, std::boxed::Box<impl std::iter::Iterator>, std::boxed::Box<impl std::iter::Iterator>, &'t31 std::string::String, &'t32 std::string::String, fn(std::boxed::Box<impl std::iter::Iterator>) -> <std::boxed::Box<impl std::iter::Iterator> as std::iter::IntoIterator>::IntoIter {<std::boxed::Box<impl std::iter::Iterator> as std::iter::IntoIterator>::into_iter}, fn(impl std::iter::Iterator) -> std::boxed::Box<impl std::iter::Iterator> {<std::boxed::Box<T>><impl std::iter::Iterator>::new}, &'t35 metadata::MetaValue, impl std::iter::Iterator, std::boxed::Box<impl std::iter::Iterator>, std::boxed::Box<impl std::iter::Iterator>, std::boxed::Box<impl std::iter::Iterator>, &'t40 std::string::String, &'t41 std::string::String}]>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0720`.
[INFO] [stderr] error: Could not compile `taggu`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused import: `PathBuf`
[INFO] [stderr]    --> src/library/mod.rs:174:21
[INFO] [stderr]     |
[INFO] [stderr] 174 |     use std::path::{PathBuf};
[INFO] [stderr]     |                     ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `DirBuilder`, `File`
[INFO] [stderr]    --> src/library/mod.rs:175:19
[INFO] [stderr]     |
[INFO] [stderr] 175 |     use std::fs::{File, DirBuilder};
[INFO] [stderr]     |                   ^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]    --> src/library/mod.rs:176:9
[INFO] [stderr]     |
[INFO] [stderr] 176 |     use std::io::Write;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread::sleep`
[INFO] [stderr]    --> src/library/mod.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |     use std::thread::sleep;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]    --> src/library/mod.rs:178:9
[INFO] [stderr]     |
[INFO] [stderr] 178 |     use std::time::Duration;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `MetaTarget`, `MetaValue`
[INFO] [stderr]    --> src/library/mod.rs:182:20
[INFO] [stderr]     |
[INFO] [stderr] 182 |     use metadata::{MetaValue, MetaTarget};
[INFO] [stderr]     |                    ^^^^^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SortOrder`
[INFO] [stderr]    --> src/library/mod.rs:183:19
[INFO] [stderr]     |
[INFO] [stderr] 183 |     use library::{SortOrder, LibraryBuilder};
[INFO] [stderr]     |                   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `library::selection::Selection`
[INFO] [stderr]    --> src/library/mod.rs:184:9
[INFO] [stderr]     |
[INFO] [stderr] 184 |     use library::selection::Selection;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Metadata`
[INFO] [stderr]  --> src/metadata/reader/mod.rs:7:16
[INFO] [stderr]   |
[INFO] [stderr] 7 | use metadata::{Metadata, MetaTarget, PathMetaListing};
[INFO] [stderr]   |                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0720]: opaque type expands to a recursive type
[INFO] [stderr]    --> src/metadata/mod.rs:149:63
[INFO] [stderr]     |
[INFO] [stderr] 149 |     pub fn iter_over<'a>(&'a self, mis: MappingIterScheme) -> impl Iterator<Item = &'a String> {
[INFO] [stderr]     |                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expands to self-referential type
[INFO] [stderr]     |
[INFO] [stderr]     = note: expanded type is `generator::GenConverter::gen_to_iter::It<[generator@src/metadata/mod.rs:150:23: 184:10 self:&'a metadata::MetaValue, mis:metadata::MappingIterScheme for<'r, 's, 't0, 't1, 't2, 't3, 't4, 't5, 't6, 't7, 't8, 't9, 't10, 't11, 't12, 't13, 't14, 't15, 't16, 't17, 't18, 't19, 't20, 't21, 't22, 't23, 't24, 't25, 't26, 't27, 't28, 't29, 't30, 't31, 't32, 't33, 't34, 't35, 't36, 't37, 't38, 't39, 't40, 't41> {&'r metadata::MetaValue, metadata::MetaValue, &'s std::string::String, (), &'t0 std::vec::Vec<metadata::MetaValue>, fn(&'t1 std::vec::Vec<metadata::MetaValue>) -> <&'t1 std::vec::Vec<metadata::MetaValue> as std::iter::IntoIterator>::IntoIter {<&'t1 std::vec::Vec<metadata::MetaValue> as std::iter::IntoIterator>::into_iter}, std::slice::Iter<'t2, metadata::MetaValue>, std::slice::Iter<'t3, metadata::MetaValue>, &'t4 metadata::MetaValue, &'t5 metadata::MetaValue, fn(std::boxed::Box<impl std::iter::Iterator>) -> <std::boxed::Box<impl std::iter::Iterator> as std::iter::IntoIterator>::IntoIter {<std::boxed::Box<impl std::iter::Iterator> as std::iter::IntoIterator>::into_iter}, fn(impl std::iter::Iterator) -> std::boxed::Box<impl std::iter::Iterator> {<std::boxed::Box<T>><impl std::iter::Iterator>::new}, &'t8 metadata::MetaValue, metadata::MappingIterScheme, impl std::iter::Iterator, std::boxed::Box<impl std::iter::Iterator>, std::boxed::Box<impl std::iter::Iterator>, std::boxed::Box<impl std::iter::Iterator>, &'t13 std::string::String, &'t14 std::string::String, std::string::String, &'t15 std::string::String, &'t16 std::collections::BTreeMap<metadata::MetaKey, metadata::MetaValue>, fn(&'t17 std::collections::BTreeMap<metadata::MetaKey, metadata::MetaValue>) -> <&'t17 std::collections::BTreeMap<metadata::MetaKey, metadata::MetaValue> as std::iter::IntoIterator>::IntoIter {<&'t17 std::collections::BTreeMap<metadata::MetaKey, metadata::MetaValue> as std::iter::IntoIterator>::into_iter}, std::collections::btree_map::Iter<'t18, metadata::MetaKey, metadata::MetaValue>, std::collections::btree_map::Iter<'t19, metadata::MetaKey, metadata::MetaValue>, (&'t20 metadata::MetaKey, &'t21 metadata::MetaValue), &'t22 metadata::MetaKey, &'t23 metadata::MetaValue, fn(std::boxed::Box<impl std::iter::Iterator>) -> <std::boxed::Box<impl std::iter::Iterator> as std::iter::IntoIterator>::IntoIter {<std::boxed::Box<impl std::iter::Iterator> as std::iter::IntoIterator>::into_iter}, fn(impl std::iter::Iterator) -> std::boxed::Box<impl std::iter::Iterator> {<std::boxed::Box<T>><impl std::iter::Iterator>::new}, metadata::MetaKey, &'t26 metadata::MetaKey, impl std::iter::Iterator, std::boxed::Box<impl std::iter::Iterator>, std::boxed::Box<impl std::iter::Iterator>, std::boxed::Box<impl std::iter::Iterator>, &'t31 std::string::String, &'t32 std::string::String, fn(std::boxed::Box<impl std::iter::Iterator>) -> <std::boxed::Box<impl std::iter::Iterator> as std::iter::IntoIterator>::IntoIter {<std::boxed::Box<impl std::iter::Iterator> as std::iter::IntoIterator>::into_iter}, fn(impl std::iter::Iterator) -> std::boxed::Box<impl std::iter::Iterator> {<std::boxed::Box<T>><impl std::iter::Iterator>::new}, &'t35 metadata::MetaValue, impl std::iter::Iterator, std::boxed::Box<impl std::iter::Iterator>, std::boxed::Box<impl std::iter::Iterator>, std::boxed::Box<impl std::iter::Iterator>, &'t40 std::string::String, &'t41 std::string::String}]>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0720`.
[INFO] [stderr] error: Could not compile `taggu`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "1fde215cfc3c3d3b068ee619051ff8842e4f6c215a7ace6722d24a0bd6343b57"`
[INFO] running `"docker" "rm" "-f" "1fde215cfc3c3d3b068ee619051ff8842e4f6c215a7ace6722d24a0bd6343b57"`
[INFO] [stdout] 1fde215cfc3c3d3b068ee619051ff8842e4f6c215a7ace6722d24a0bd6343b57