[INFO] crate treez 0.12.0 is already in cache
[INFO] extracting crate treez 0.12.0 into work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/treez/0.12.0
[INFO] extracting crate treez 0.12.0 into work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/treez/0.12.0
[INFO] validating manifest of treez-0.12.0 on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of treez-0.12.0 on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing treez-0.12.0
[INFO] finished frobbing treez-0.12.0
[INFO] frobbed toml for treez-0.12.0 written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/treez/0.12.0/Cargo.toml
[INFO] started frobbing treez-0.12.0
[INFO] finished frobbing treez-0.12.0
[INFO] frobbed toml for treez-0.12.0 written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/treez/0.12.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking treez-0.12.0 against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-3/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/treez/0.12.0:/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=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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1405c4353ac65910cf89d1400bc4f80232ec52b949962f8fdcbdb6d3e9e5c2cc
[INFO] running `"docker" "start" "-a" "1405c4353ac65910cf89d1400bc4f80232ec52b949962f8fdcbdb6d3e9e5c2cc"`
[INFO] [stderr]     Checking crossbeam-utils v0.5.0
[INFO] [stderr]     Checking mazth v0.0.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking crossbeam-deque v0.5.2
[INFO] [stderr]     Checking crossbeam-channel v0.2.6
[INFO] [stderr]     Checking crossbeam v0.4.1
[INFO] [stderr]     Checking treez v0.12.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/autograd.rs:74:22
[INFO] [stderr]    |
[INFO] [stderr] 74 |         let b : Box< Op > = match op {
[INFO] [stderr]    |                      ^^ help: use `dyn`: `dyn Op`
[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/autograd.rs:299:19
[INFO] [stderr]     |
[INFO] [stderr] 299 |     pub _op: Box< Op >,
[INFO] [stderr]     |                   ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:306:21
[INFO] [stderr]     |
[INFO] [stderr] 306 | impl Clone for Box< Op > {
[INFO] [stderr]     |                     ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:307:31
[INFO] [stderr]     |
[INFO] [stderr] 307 |     fn clone( &self ) -> Box< Op > {
[INFO] [stderr]     |                               ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:593:36
[INFO] [stderr]     |
[INFO] [stderr] 593 |     fn box_clone( & self ) -> Box< Op >;
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:604:36
[INFO] [stderr]     |
[INFO] [stderr] 604 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:626:36
[INFO] [stderr]     |
[INFO] [stderr] 626 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:667:36
[INFO] [stderr]     |
[INFO] [stderr] 667 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:693:36
[INFO] [stderr]     |
[INFO] [stderr] 693 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:716:36
[INFO] [stderr]     |
[INFO] [stderr] 716 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:740:36
[INFO] [stderr]     |
[INFO] [stderr] 740 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:763:36
[INFO] [stderr]     |
[INFO] [stderr] 763 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:797:36
[INFO] [stderr]     |
[INFO] [stderr] 797 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:831:36
[INFO] [stderr]     |
[INFO] [stderr] 831 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:863:36
[INFO] [stderr]     |
[INFO] [stderr] 863 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:894:36
[INFO] [stderr]     |
[INFO] [stderr] 894 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:921:36
[INFO] [stderr]     |
[INFO] [stderr] 921 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/autograd.rs:74:22
[INFO] [stderr]    |
[INFO] [stderr] 74 |         let b : Box< Op > = match op {
[INFO] [stderr]    |                      ^^ help: use `dyn`: `dyn Op`
[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/autograd.rs:299:19
[INFO] [stderr]     |
[INFO] [stderr] 299 |     pub _op: Box< Op >,
[INFO] [stderr]     |                   ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:306:21
[INFO] [stderr]     |
[INFO] [stderr] 306 | impl Clone for Box< Op > {
[INFO] [stderr]     |                     ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:307:31
[INFO] [stderr]     |
[INFO] [stderr] 307 |     fn clone( &self ) -> Box< Op > {
[INFO] [stderr]     |                               ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:593:36
[INFO] [stderr]     |
[INFO] [stderr] 593 |     fn box_clone( & self ) -> Box< Op >;
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:604:36
[INFO] [stderr]     |
[INFO] [stderr] 604 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:626:36
[INFO] [stderr]     |
[INFO] [stderr] 626 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:667:36
[INFO] [stderr]     |
[INFO] [stderr] 667 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:693:36
[INFO] [stderr]     |
[INFO] [stderr] 693 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:716:36
[INFO] [stderr]     |
[INFO] [stderr] 716 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:740:36
[INFO] [stderr]     |
[INFO] [stderr] 740 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:763:36
[INFO] [stderr]     |
[INFO] [stderr] 763 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:797:36
[INFO] [stderr]     |
[INFO] [stderr] 797 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:831:36
[INFO] [stderr]     |
[INFO] [stderr] 831 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:863:36
[INFO] [stderr]     |
[INFO] [stderr] 863 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:894:36
[INFO] [stderr]     |
[INFO] [stderr] 894 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/autograd.rs:921:36
[INFO] [stderr]     |
[INFO] [stderr] 921 |     fn box_clone( & self ) -> Box< Op > {
[INFO] [stderr]     |                                    ^^ help: use `dyn`: `dyn Op`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rb.rs:129:17
[INFO] [stderr]     |
[INFO] [stderr] 129 |             let mut leaf_dummy = Node {
[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] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rb.rs:129:17
[INFO] [stderr]     |
[INFO] [stderr] 129 |             let mut leaf_dummy = Node {
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/test_autograd.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         let mut b = c.init_op( autograd::OpType::Add, & mut [ & mut z, & mut a ] );
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/test_autograd.rs:74:13
[INFO] [stderr]    |
[INFO] [stderr] 74 |         let mut b = c.init_op( autograd::OpType::Add, & mut [ & mut z, & mut a ] );
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/test_autograd.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         let mut b = c.init_op( autograd::OpType::Add, & mut [ & mut z, & mut a ] );
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/test_autograd.rs:74:13
[INFO] [stderr]    |
[INFO] [stderr] 74 |         let mut b = c.init_op( autograd::OpType::Add, & mut [ & mut z, & mut a ] );
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.70s
[INFO] running `"docker" "inspect" "1405c4353ac65910cf89d1400bc4f80232ec52b949962f8fdcbdb6d3e9e5c2cc"`
[INFO] running `"docker" "rm" "-f" "1405c4353ac65910cf89d1400bc4f80232ec52b949962f8fdcbdb6d3e9e5c2cc"`
[INFO] [stdout] 1405c4353ac65910cf89d1400bc4f80232ec52b949962f8fdcbdb6d3e9e5c2cc