[INFO] updating cached repository mayhewj/lox
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mayhewj/lox
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mayhewj/lox" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/mayhewj/lox"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/mayhewj/lox'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mayhewj/lox" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/mayhewj/lox"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/mayhewj/lox'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ffc764b5f35e40a67ddf92072826a6e9d9d40f1b
[INFO] sha for GitHub repo mayhewj/lox: ffc764b5f35e40a67ddf92072826a6e9d9d40f1b
[INFO] validating manifest of mayhewj/lox on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mayhewj/lox on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mayhewj/lox
[INFO] finished frobbing mayhewj/lox
[INFO] frobbed toml for mayhewj/lox written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/mayhewj/lox/Cargo.toml
[INFO] started frobbing mayhewj/lox
[INFO] finished frobbing mayhewj/lox
[INFO] frobbed toml for mayhewj/lox written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/mayhewj/lox/Cargo.toml
[INFO] crate mayhewj/lox already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mayhewj/lox against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-4/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/mayhewj/lox:/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=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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d7fbb0ce6c3c00bd27fecf4034494f915ccd57951712eb73781450231293dafc
[INFO] running `"docker" "start" "-a" "d7fbb0ce6c3c00bd27fecf4034494f915ccd57951712eb73781450231293dafc"`
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking lox v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/runtime/lox_callable.rs:11:23
[INFO] [stderr]    |
[INFO] [stderr] 11 | impl fmt::Display for LoxCallable {
[INFO] [stderr]    |                       ^^^^^^^^^^^ help: use `dyn`: `dyn LoxCallable`
[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/runtime/value.rs:13:17
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Callable(Rc<LoxCallable>),
[INFO] [stderr]    |                 ^^^^^^^^^^^ help: use `dyn`: `dyn LoxCallable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/runtime/value.rs:28:45
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn into_callable(self) -> Option<Rc<LoxCallable>> {
[INFO] [stderr]    |                                             ^^^^^^^^^^^ help: use `dyn`: `dyn LoxCallable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:27:40
[INFO] [stderr]    |
[INFO] [stderr] 27 | type Result<T> = result::Result<T, Box<Error>>;
[INFO] [stderr]    |                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/runtime/lox_callable.rs:11:23
[INFO] [stderr]    |
[INFO] [stderr] 11 | impl fmt::Display for LoxCallable {
[INFO] [stderr]    |                       ^^^^^^^^^^^ help: use `dyn`: `dyn LoxCallable`
[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/runtime/value.rs:13:17
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Callable(Rc<LoxCallable>),
[INFO] [stderr]    |                 ^^^^^^^^^^^ help: use `dyn`: `dyn LoxCallable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/runtime/value.rs:28:45
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn into_callable(self) -> Option<Rc<LoxCallable>> {
[INFO] [stderr]    |                                             ^^^^^^^^^^^ help: use `dyn`: `dyn LoxCallable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:27:40
[INFO] [stderr]    |
[INFO] [stderr] 27 | type Result<T> = result::Result<T, Box<Error>>;
[INFO] [stderr]    |                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.90s
[INFO] running `"docker" "inspect" "d7fbb0ce6c3c00bd27fecf4034494f915ccd57951712eb73781450231293dafc"`
[INFO] running `"docker" "rm" "-f" "d7fbb0ce6c3c00bd27fecf4034494f915ccd57951712eb73781450231293dafc"`
[INFO] [stdout] d7fbb0ce6c3c00bd27fecf4034494f915ccd57951712eb73781450231293dafc