[INFO] updating cached repository mariosangiorgio/rulox
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mariosangiorgio/rulox
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mariosangiorgio/rulox" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/mariosangiorgio/rulox"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/mariosangiorgio/rulox'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mariosangiorgio/rulox" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/mariosangiorgio/rulox"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/mariosangiorgio/rulox'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9e9e44f1143aa74b62e43452a35cd4786aecabcf
[INFO] sha for GitHub repo mariosangiorgio/rulox: 9e9e44f1143aa74b62e43452a35cd4786aecabcf
[INFO] validating manifest of mariosangiorgio/rulox on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mariosangiorgio/rulox on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mariosangiorgio/rulox
[INFO] finished frobbing mariosangiorgio/rulox
[INFO] frobbed toml for mariosangiorgio/rulox written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/mariosangiorgio/rulox/Cargo.toml
[INFO] started frobbing mariosangiorgio/rulox
[INFO] finished frobbing mariosangiorgio/rulox
[INFO] frobbed toml for mariosangiorgio/rulox written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/mariosangiorgio/rulox/Cargo.toml
[INFO] crate mariosangiorgio/rulox already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mariosangiorgio/rulox against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-1/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/mariosangiorgio/rulox:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 10956bc87dc2ca2895cab0102bc49a1bcf0fe5c19a76b4be2e1b2d0ecaf3d8bd
[INFO] running `"docker" "start" "-a" "10956bc87dc2ca2895cab0102bc49a1bcf0fe5c19a76b4be2e1b2d0ecaf3d8bd"`
[INFO] [stderr]     Checking wait-timeout v0.1.5
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]    Compiling syn v0.15.14
[INFO] [stderr]     Checking tempfile v3.0.4
[INFO] [stderr]     Checking rusty-fork v0.2.1
[INFO] [stderr]     Checking proptest v0.8.7
[INFO] [stderr]    Compiling num-derive v0.2.4
[INFO] [stderr]     Checking rulox v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/frontend/scanner.rs:130:38
[INFO] [stderr]     |
[INFO] [stderr] 130 |     fn peek_check(&mut self, check: &Fn(char) -> bool) -> bool {
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(char) -> bool`
[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/frontend/scanner.rs:138:40
[INFO] [stderr]     |
[INFO] [stderr] 138 |     fn peek_check2(&mut self, check1: &Fn(char) -> bool, check2: &Fn(char) -> bool) -> bool {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(char) -> bool`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/frontend/scanner.rs:138:67
[INFO] [stderr]     |
[INFO] [stderr] 138 |     fn peek_check2(&mut self, check1: &Fn(char) -> bool, check2: &Fn(char) -> bool) -> bool {
[INFO] [stderr]     |                                                                   ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(char) -> bool`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/frontend/scanner.rs:171:45
[INFO] [stderr]     |
[INFO] [stderr] 171 |     fn advance_while(&mut self, condition: &Fn(char) -> bool) -> () {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(char) -> bool`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/treewalk/parser.rs:170:27
[INFO] [stderr]     |
[INFO] [stderr] 170 |           parse_statement: &Fn(&mut Parser, &mut Peekable<I>)
[INFO] [stderr]     |  ___________________________^
[INFO] [stderr] 171 | |             -> Option<Result<Statement, ParseError>>,
[INFO] [stderr]     | |____________________________________________________^
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 170 |         parse_statement: &dyn Fn(&mut Parser, &mut Peekable<I>)
[INFO] [stderr] 171 |             -> Option<Result<Statement, ParseError>>,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/treewalk/parser.rs:646:24
[INFO] [stderr]     |
[INFO] [stderr] 646 |         map_operator: &Fn(&Token) -> Option<LogicOperator>,
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Token) -> Option<LogicOperator>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/treewalk/parser.rs:647:31
[INFO] [stderr]     |
[INFO] [stderr] 647 |         parse_subexpression: &Fn(&mut Parser, &mut Peekable<I>) -> Option<Result<Expr, ParseError>>,
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Parser, &mut Peekable<I>) -> Option<Result<Expr, ParseError>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/treewalk/parser.rs:688:24
[INFO] [stderr]     |
[INFO] [stderr] 688 |         map_operator: &Fn(&Token) -> Option<BinaryOperator>,
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Token) -> Option<BinaryOperator>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/treewalk/parser.rs:689:31
[INFO] [stderr]     |
[INFO] [stderr] 689 |         parse_subexpression: &Fn(&mut Parser, &mut Peekable<I>) -> Option<Result<Expr, ParseError>>,
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Parser, &mut Peekable<I>) -> Option<Result<Expr, ParseError>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/treewalk/parser.rs:945:26
[INFO] [stderr]     |
[INFO] [stderr] 945 |         parse_argument: &Fn(&mut Parser, &mut Peekable<I>) -> Option<Result<A, ParseError>>,
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Parser, &mut Peekable<I>) -> Option<Result<A, ParseError>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/frontend/scanner.rs:130:38
[INFO] [stderr]     |
[INFO] [stderr] 130 |     fn peek_check(&mut self, check: &Fn(char) -> bool) -> bool {
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(char) -> bool`
[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/frontend/scanner.rs:138:40
[INFO] [stderr]     |
[INFO] [stderr] 138 |     fn peek_check2(&mut self, check1: &Fn(char) -> bool, check2: &Fn(char) -> bool) -> bool {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(char) -> bool`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/frontend/scanner.rs:138:67
[INFO] [stderr]     |
[INFO] [stderr] 138 |     fn peek_check2(&mut self, check1: &Fn(char) -> bool, check2: &Fn(char) -> bool) -> bool {
[INFO] [stderr]     |                                                                   ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(char) -> bool`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/frontend/scanner.rs:171:45
[INFO] [stderr]     |
[INFO] [stderr] 171 |     fn advance_while(&mut self, condition: &Fn(char) -> bool) -> () {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(char) -> bool`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/treewalk/parser.rs:170:27
[INFO] [stderr]     |
[INFO] [stderr] 170 |           parse_statement: &Fn(&mut Parser, &mut Peekable<I>)
[INFO] [stderr]     |  ___________________________^
[INFO] [stderr] 171 | |             -> Option<Result<Statement, ParseError>>,
[INFO] [stderr]     | |____________________________________________________^
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 170 |         parse_statement: &dyn Fn(&mut Parser, &mut Peekable<I>)
[INFO] [stderr] 171 |             -> Option<Result<Statement, ParseError>>,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/treewalk/parser.rs:646:24
[INFO] [stderr]     |
[INFO] [stderr] 646 |         map_operator: &Fn(&Token) -> Option<LogicOperator>,
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Token) -> Option<LogicOperator>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/treewalk/parser.rs:647:31
[INFO] [stderr]     |
[INFO] [stderr] 647 |         parse_subexpression: &Fn(&mut Parser, &mut Peekable<I>) -> Option<Result<Expr, ParseError>>,
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Parser, &mut Peekable<I>) -> Option<Result<Expr, ParseError>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/treewalk/parser.rs:688:24
[INFO] [stderr]     |
[INFO] [stderr] 688 |         map_operator: &Fn(&Token) -> Option<BinaryOperator>,
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Token) -> Option<BinaryOperator>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/treewalk/parser.rs:689:31
[INFO] [stderr]     |
[INFO] [stderr] 689 |         parse_subexpression: &Fn(&mut Parser, &mut Peekable<I>) -> Option<Result<Expr, ParseError>>,
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Parser, &mut Peekable<I>) -> Option<Result<Expr, ParseError>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/treewalk/parser.rs:945:26
[INFO] [stderr]     |
[INFO] [stderr] 945 |         parse_argument: &Fn(&mut Parser, &mut Peekable<I>) -> Option<Result<A, ParseError>>,
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Parser, &mut Peekable<I>) -> Option<Result<A, ParseError>>`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/treewalk/mod.rs:99:5
[INFO] [stderr]     |
[INFO] [stderr] 99  | /     proptest! {
[INFO] [stderr] 100 | |     #[test]
[INFO] [stderr] 101 | |     fn doesnt_crash(ref input in "\\PC*") {
[INFO] [stderr] 102 | |         let mut lox_vm = TreeWalkRuloxInterpreter::default();
[INFO] [stderr] 103 | |         lox_vm.run(input)
[INFO] [stderr] 104 | |     }
[INFO] [stderr] 105 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/vm/mod.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 | /     proptest! {
[INFO] [stderr] 28 | |     #[test]
[INFO] [stderr] 29 | |     #[ignore]
[INFO] [stderr] 30 | |     fn doesnt_crash(ref input in "\\PC*") {
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |     }
[INFO] [stderr] 34 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.53s
[INFO] running `"docker" "inspect" "10956bc87dc2ca2895cab0102bc49a1bcf0fe5c19a76b4be2e1b2d0ecaf3d8bd"`
[INFO] running `"docker" "rm" "-f" "10956bc87dc2ca2895cab0102bc49a1bcf0fe5c19a76b4be2e1b2d0ecaf3d8bd"`
[INFO] [stdout] 10956bc87dc2ca2895cab0102bc49a1bcf0fe5c19a76b4be2e1b2d0ecaf3d8bd