[INFO] crate suppositions 0.1.4 is already in cache
[INFO] extracting crate suppositions 0.1.4 into work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/suppositions/0.1.4
[INFO] extracting crate suppositions 0.1.4 into work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/suppositions/0.1.4
[INFO] validating manifest of suppositions-0.1.4 on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of suppositions-0.1.4 on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing suppositions-0.1.4
[INFO] finished frobbing suppositions-0.1.4
[INFO] frobbed toml for suppositions-0.1.4 written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/suppositions/0.1.4/Cargo.toml
[INFO] started frobbing suppositions-0.1.4
[INFO] finished frobbing suppositions-0.1.4
[INFO] frobbed toml for suppositions-0.1.4 written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/suppositions/0.1.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking suppositions-0.1.4 against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-3/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/suppositions/0.1.4:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5edae26c66063183acd18503fb412a3653cf1c00a086a529f398cb7508875232
[INFO] running `"docker" "start" "-a" "5edae26c66063183acd18503fb412a3653cf1c00a086a529f398cb7508875232"`
[INFO] [stderr]     Checking suppositions v0.1.4 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/generators.rs:157:38
[INFO] [stderr]     |
[INFO] [stderr] 157 |     fn generate_obj(&self, src: &mut Iterator<Item = u8>) -> Maybe<Self::Item>;
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = u8>`
[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/generators.rs:167:27
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn boxed(self) -> Box<GeneratorObject<Item = Self::Item>>;
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn GeneratorObject<Item = Self::Item>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/generators.rs:175:27
[INFO] [stderr]     |
[INFO] [stderr] 175 |     fn boxed(self) -> Box<GeneratorObject<Item = Self::Item>> {
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn GeneratorObject<Item = Self::Item>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/generators.rs:182:42
[INFO] [stderr]     |
[INFO] [stderr] 182 |     fn generate_obj(&self, mut src: &mut Iterator<Item = u8>) -> Maybe<Self::Item> {
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = u8>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/generators.rs:187:27
[INFO] [stderr]     |
[INFO] [stderr] 187 | impl<T> Generator for Box<GeneratorObject<Item = T>> {
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn GeneratorObject<Item = T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/generators.rs:190:43
[INFO] [stderr]     |
[INFO] [stderr] 190 |         (**self).generate_obj(src as &mut Iterator<Item = u8>)
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = u8>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/data.rs:321:17
[INFO] [stderr]     |
[INFO] [stderr] 321 |         let _: &Iterator<Item = u8> = &p.replay();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = u8>`
[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/data.rs:330:17
[INFO] [stderr]     |
[INFO] [stderr] 330 |         let _: &Iterator<Item = u8> = &p.replay();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = u8>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/generators.rs:157:38
[INFO] [stderr]     |
[INFO] [stderr] 157 |     fn generate_obj(&self, src: &mut Iterator<Item = u8>) -> Maybe<Self::Item>;
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = u8>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/generators.rs:167:27
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn boxed(self) -> Box<GeneratorObject<Item = Self::Item>>;
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn GeneratorObject<Item = Self::Item>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/generators.rs:175:27
[INFO] [stderr]     |
[INFO] [stderr] 175 |     fn boxed(self) -> Box<GeneratorObject<Item = Self::Item>> {
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn GeneratorObject<Item = Self::Item>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/generators.rs:182:42
[INFO] [stderr]     |
[INFO] [stderr] 182 |     fn generate_obj(&self, mut src: &mut Iterator<Item = u8>) -> Maybe<Self::Item> {
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = u8>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/generators.rs:187:27
[INFO] [stderr]     |
[INFO] [stderr] 187 | impl<T> Generator for Box<GeneratorObject<Item = T>> {
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn GeneratorObject<Item = T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/generators.rs:190:43
[INFO] [stderr]     |
[INFO] [stderr] 190 |         (**self).generate_obj(src as &mut Iterator<Item = u8>)
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = u8>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> examples/die-hard.rs:70:17
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn ops() -> Box<GeneratorObject<Item = Op>> {
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn GeneratorObject<Item = 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]   --> tests/recursive.rs:36:22
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn expr_gen() -> Box<GeneratorObject<Item=Expr>> {
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn GeneratorObject<Item=Expr>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> tests/smoketest.rs:57:14
[INFO] [stderr]    |
[INFO] [stderr] 57 |     property((booleans())).check(|_| false)
[INFO] [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> tests/smoketest.rs:62:14
[INFO] [stderr]    |
[INFO] [stderr] 62 |     property((booleans())).check(|_| true)
[INFO] [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> tests/smoketest.rs:77:14
[INFO] [stderr]    |
[INFO] [stderr] 77 |     property((booleans())).check(|_| -> Result<(), ()> { Err(()) })
[INFO] [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> tests/smoketest.rs:83:14
[INFO] [stderr]    |
[INFO] [stderr] 83 |     property((booleans())).check(|_| -> Result<(), &'static str> { Err("horrible failure") })
[INFO] [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> tests/smoketest.rs:89:14
[INFO] [stderr]    |
[INFO] [stderr] 89 |     property((booleans())).check(|_| -> Result<(), ()> { Ok(()) })
[INFO] [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> tests/smoketest.rs:95:14
[INFO] [stderr]    |
[INFO] [stderr] 95 |     property((booleans())).check(|_| -> () { panic!("Big bad boom") })
[INFO] [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> tests/smoketest.rs:101:14
[INFO] [stderr]     |
[INFO] [stderr] 101 |     property((booleans())).check(|_| -> () { panic!("Big bad boom") })
[INFO] [stderr]     |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.75s
[INFO] running `"docker" "inspect" "5edae26c66063183acd18503fb412a3653cf1c00a086a529f398cb7508875232"`
[INFO] running `"docker" "rm" "-f" "5edae26c66063183acd18503fb412a3653cf1c00a086a529f398cb7508875232"`
[INFO] [stdout] 5edae26c66063183acd18503fb412a3653cf1c00a086a529f398cb7508875232