[INFO] crate earley 0.1.0 is already in cache
[INFO] extracting crate earley 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/earley/0.1.0
[INFO] extracting crate earley 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/earley/0.1.0
[INFO] validating manifest of earley-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 earley-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 earley-0.1.0
[INFO] finished frobbing earley-0.1.0
[INFO] frobbed toml for earley-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/earley/0.1.0/Cargo.toml
[INFO] started frobbing earley-0.1.0
[INFO] finished frobbing earley-0.1.0
[INFO] frobbed toml for earley-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/earley/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 earley-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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/earley/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] 5c62f9d3c9e46f2542571debe3f58c56d7ce56ee11767e0638a2c04d857982e9
[INFO] running `"docker" "start" "-a" "5c62f9d3c9e46f2542571debe3f58c56d7ce56ee11767e0638a2c04d857982e9"`
[INFO] [stderr]    Compiling earley v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grammar/production.rs:12:31
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl<'a, T> PartialEq for &'a Production<T> {
[INFO] [stderr]    |                               ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grammar/production.rs:18:24
[INFO] [stderr]    |
[INFO] [stderr] 18 | impl<'a, T> Eq for &'a Production<T> {}
[INFO] [stderr]    |                        ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/grammar/rule.rs:6:26
[INFO] [stderr]   |
[INFO] [stderr] 6 |     productions: Vec<Box<Production<T>>>,
[INFO] [stderr]   |                          ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grammar/rule.rs:11:57
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(name: &'static str, productions: Vec<Box<Production<T>>>) -> Rule<T> {
[INFO] [stderr]    |                                                         ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grammar/rule.rs:23:44
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn get_productions(&self) -> &[Box<Production<T>>] {
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grammar/mod.rs:20:37
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn new(productions: Vec<Box<Production<T>>>) -> Grammar<T> {
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grammar/mod.rs:47:58
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn productions_for_starting_rule(&self) -> &[Box<Production<T>>] {
[INFO] [stderr]    |                                                          ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grammar/mod.rs:51:56
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn productions_for(&self, name: &str) -> &[Box<Production<T>>] {
[INFO] [stderr]    |                                                        ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/item.rs:16:21
[INFO] [stderr]    |
[INFO] [stderr] 16 |     production: &'a Production<T>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/item.rs:42:36
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn predict(production: &'a Production<T>, start: usize) -> Item<'a, T> {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/item_table.rs:88:21
[INFO] [stderr]    |
[INFO] [stderr] 88 |         if let Some(mut items) = self.table.get_mut(index) {
[INFO] [stderr]    |                     ----^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "5c62f9d3c9e46f2542571debe3f58c56d7ce56ee11767e0638a2c04d857982e9"`
[INFO] running `"docker" "rm" "-f" "5c62f9d3c9e46f2542571debe3f58c56d7ce56ee11767e0638a2c04d857982e9"`
[INFO] [stdout] 5c62f9d3c9e46f2542571debe3f58c56d7ce56ee11767e0638a2c04d857982e9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/earley/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] fac9274ac7cbd78a03e0f040c1f416a5f97ee38a1a2d539679c7d1a6cc117cfe
[INFO] running `"docker" "start" "-a" "fac9274ac7cbd78a03e0f040c1f416a5f97ee38a1a2d539679c7d1a6cc117cfe"`
[INFO] [stderr]    Compiling earley v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> tests/empty_rules.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grammar/production.rs:12:31
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl<'a, T> PartialEq for &'a Production<T> {
[INFO] [stderr]    |                               ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grammar/production.rs:18:24
[INFO] [stderr]    |
[INFO] [stderr] 18 | impl<'a, T> Eq for &'a Production<T> {}
[INFO] [stderr]    |                        ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/grammar/rule.rs:6:26
[INFO] [stderr]   |
[INFO] [stderr] 6 |     productions: Vec<Box<Production<T>>>,
[INFO] [stderr]   |                          ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grammar/rule.rs:11:57
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(name: &'static str, productions: Vec<Box<Production<T>>>) -> Rule<T> {
[INFO] [stderr]    |                                                         ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grammar/rule.rs:23:44
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn get_productions(&self) -> &[Box<Production<T>>] {
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grammar/mod.rs:20:37
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn new(productions: Vec<Box<Production<T>>>) -> Grammar<T> {
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grammar/mod.rs:47:58
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn productions_for_starting_rule(&self) -> &[Box<Production<T>>] {
[INFO] [stderr]    |                                                          ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grammar/mod.rs:51:56
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn productions_for(&self, name: &str) -> &[Box<Production<T>>] {
[INFO] [stderr]    |                                                        ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/item.rs:16:21
[INFO] [stderr]    |
[INFO] [stderr] 16 |     production: &'a Production<T>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/item.rs:42:36
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn predict(production: &'a Production<T>, start: usize) -> Item<'a, T> {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   |
[INFO] [stderr]  --> tests/basic.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> tests/basic.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let productions: Vec<Box<Production<u32>>> = vec![
[INFO] [stderr]   |                              ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<u32>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> tests/empty_rules.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let productions: Vec<Box<Production<String>>> = vec![
[INFO] [stderr]   |                              ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<String>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> tests/nullability.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> tests/nullability.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let productions: Vec<Box<Production<u32>>> = vec![
[INFO] [stderr]   |                              ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<u32>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> tests/rules.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> tests/rules.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let productions: Vec<Box<Production<u32>>> = vec![
[INFO] [stderr]   |                              ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Production<u32>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> examples/basic.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `unwrap` found for type `()` in the current scope
[INFO] [stderr]  --> examples/basic.rs:8:24
[INFO] [stderr]   |
[INFO] [stderr] 8 |     env_logger::init().unwrap();
[INFO] [stderr]   |                        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/item_table.rs:88:21
[INFO] [stderr]    |
[INFO] [stderr] 88 |         if let Some(mut items) = self.table.get_mut(index) {
[INFO] [stderr]    |                     ----^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: Could not compile `earley`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "fac9274ac7cbd78a03e0f040c1f416a5f97ee38a1a2d539679c7d1a6cc117cfe"`
[INFO] running `"docker" "rm" "-f" "fac9274ac7cbd78a03e0f040c1f416a5f97ee38a1a2d539679c7d1a6cc117cfe"`
[INFO] [stdout] fac9274ac7cbd78a03e0f040c1f416a5f97ee38a1a2d539679c7d1a6cc117cfe