[INFO] crate quickercheck 0.2.0 is already in cache [INFO] extracting crate quickercheck 0.2.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/quickercheck/0.2.0 [INFO] extracting crate quickercheck 0.2.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/quickercheck/0.2.0 [INFO] validating manifest of quickercheck-0.2.0 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 quickercheck-0.2.0 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 quickercheck-0.2.0 [INFO] finished frobbing quickercheck-0.2.0 [INFO] frobbed toml for quickercheck-0.2.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/quickercheck/0.2.0/Cargo.toml [INFO] started frobbing quickercheck-0.2.0 [INFO] finished frobbing quickercheck-0.2.0 [INFO] frobbed toml for quickercheck-0.2.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/quickercheck/0.2.0/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 quickercheck-0.2.0 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/quickercheck/0.2.0:/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] 9c6e3c6f0ccfc7b59532104a1933df210e99a23ba69da87d65face146976f654 [INFO] running `"docker" "start" "-a" "9c6e3c6f0ccfc7b59532104a1933df210e99a23ba69da87d65face146976f654"` [INFO] [stderr] Compiling quickercheck v0.2.0 (/opt/crater/workdir) [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [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/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:105:37 [INFO] [stderr] | [INFO] [stderr] 105 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 132 | int_impls! { i8, i16, i32, i64, isize } [INFO] [stderr] | --------------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:148:37 [INFO] [stderr] | [INFO] [stderr] 148 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 163 | uint_impls! { u8, u16, u32, u64, usize } [INFO] [stderr] | ---------------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:185:25 [INFO] [stderr] | [INFO] [stderr] 185 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:197:54 [INFO] [stderr] | [INFO] [stderr] 197 | .fold(Box::new(iter::empty()) as Box>, |it, next| Box::new(it.chain(next)) ) [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:210:42 [INFO] [stderr] | [INFO] [stderr] 210 | ) as Box> [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:213:62 [INFO] [stderr] | [INFO] [stderr] 213 | .fold(Box::new(iter::empty()) as Box>, |it, next| Box::new(it.chain(next))) [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:274:25 [INFO] [stderr] | [INFO] [stderr] 274 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> src/arbitrary.rs:108:48 [INFO] [stderr] | [INFO] [stderr] 108 | FromIteratorGenerator::new(($($placeholder::arbitrary()),*)) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] ... [INFO] [stderr] 119 | / generic_impls! { [INFO] [stderr] 120 | | Vec, [INFO] [stderr] 121 | | BTreeMap, [INFO] [stderr] 122 | | BTreeSet, [INFO] [stderr] ... | [INFO] [stderr] 127 | | VecDeque [INFO] [stderr] 128 | | } [INFO] [stderr] | |_- in this macro invocation [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_parens)] on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> src/arbitrary.rs:112:47 [INFO] [stderr] | [INFO] [stderr] 112 | FromIteratorShrinker::new(($($placeholder::shrink()),*)) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] ... [INFO] [stderr] 119 | / generic_impls! { [INFO] [stderr] 120 | | Vec, [INFO] [stderr] 121 | | BTreeMap, [INFO] [stderr] 122 | | BTreeSet, [INFO] [stderr] ... | [INFO] [stderr] 127 | | VecDeque [INFO] [stderr] 128 | | } [INFO] [stderr] | |_- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> src/arbitrary.rs:108:48 [INFO] [stderr] | [INFO] [stderr] 108 | FromIteratorGenerator::new(($($placeholder::arbitrary()),*)) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] ... [INFO] [stderr] 119 | / generic_impls! { [INFO] [stderr] 120 | | Vec, [INFO] [stderr] 121 | | BTreeMap, [INFO] [stderr] 122 | | BTreeSet, [INFO] [stderr] ... | [INFO] [stderr] 127 | | VecDeque [INFO] [stderr] 128 | | } [INFO] [stderr] | |_- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rose.rs:7:23 [INFO] [stderr] | [INFO] [stderr] 7 | pub iterator: Box>> [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator>` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rose.rs:33:31 [INFO] [stderr] | [INFO] [stderr] 33 | fn iterator(&self) -> Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rose.rs:78:28 [INFO] [stderr] | [INFO] [stderr] 78 | where F: Fn(&T) -> Box> + 'static [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rose.rs:89:28 [INFO] [stderr] | [INFO] [stderr] 89 | where F: Fn(&T) -> Box> + 'static [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rose.rs:93:31 [INFO] [stderr] | [INFO] [stderr] 93 | fn iterator(&self) -> Box> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rose.rs:109:32 [INFO] [stderr] | [INFO] [stderr] 109 | where F: Fn(&S, &T) -> Box> + 'static [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rose.rs:121:32 [INFO] [stderr] | [INFO] [stderr] 121 | where F: Fn(&S, &T) -> Box> + 'static [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rose.rs:125:31 [INFO] [stderr] | [INFO] [stderr] 125 | fn iterator(&self) -> Box> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: lifetime may not live long enough [INFO] [stderr] --> src/generate.rs:22:9 [INFO] [stderr] | [INFO] [stderr] 13 | impl <'a, R: ?Sized + 'a> GenerateCtx<'a, R> { [INFO] [stderr] | -- lifetime `'a` defined here [INFO] [stderr] ... [INFO] [stderr] 19 | pub fn chop<'b>(&'b mut self) -> GenerateCtx<'b, R> [INFO] [stderr] | -- lifetime `'b` defined here [INFO] [stderr] ... [INFO] [stderr] 22 | Self::new(self.rng, self.size/2) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ argument requires that `'b` must outlive `'a` [INFO] [stderr] | [INFO] [stderr] = warning: this error has been downgraded to a warning for backwards compatibility with previous releases [INFO] [stderr] = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future [INFO] [stderr] = note: for more information, try `rustc --explain E0729` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 10.18s [INFO] running `"docker" "inspect" "9c6e3c6f0ccfc7b59532104a1933df210e99a23ba69da87d65face146976f654"` [INFO] running `"docker" "rm" "-f" "9c6e3c6f0ccfc7b59532104a1933df210e99a23ba69da87d65face146976f654"` [INFO] [stdout] 9c6e3c6f0ccfc7b59532104a1933df210e99a23ba69da87d65face146976f654 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/quickercheck/0.2.0:/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] 22405dabe01c4867337954fb7b876aeda79a6b9b353ce62f4d14a0f7860dbd4c [INFO] running `"docker" "start" "-a" "22405dabe01c4867337954fb7b876aeda79a6b9b353ce62f4d14a0f7860dbd4c"` [INFO] [stderr] Compiling quickercheck v0.2.0 (/opt/crater/workdir) [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [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/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:65:33 [INFO] [stderr] | [INFO] [stderr] 65 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 89 | macro_tuples_impl!{tuple_impls} [INFO] [stderr] | ------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:105:37 [INFO] [stderr] | [INFO] [stderr] 105 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 132 | int_impls! { i8, i16, i32, i64, isize } [INFO] [stderr] | --------------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:148:37 [INFO] [stderr] | [INFO] [stderr] 148 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] ... [INFO] [stderr] 163 | uint_impls! { u8, u16, u32, u64, usize } [INFO] [stderr] | ---------------------------------------- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:185:25 [INFO] [stderr] | [INFO] [stderr] 185 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:197:54 [INFO] [stderr] | [INFO] [stderr] 197 | .fold(Box::new(iter::empty()) as Box>, |it, next| Box::new(it.chain(next)) ) [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:210:42 [INFO] [stderr] | [INFO] [stderr] 210 | ) as Box> [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:213:62 [INFO] [stderr] | [INFO] [stderr] 213 | .fold(Box::new(iter::empty()) as Box>, |it, next| Box::new(it.chain(next))) [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/shrink.rs:274:25 [INFO] [stderr] | [INFO] [stderr] 274 | type Iterator = Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> src/arbitrary.rs:108:48 [INFO] [stderr] | [INFO] [stderr] 108 | FromIteratorGenerator::new(($($placeholder::arbitrary()),*)) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] ... [INFO] [stderr] 119 | / generic_impls! { [INFO] [stderr] 120 | | Vec, [INFO] [stderr] 121 | | BTreeMap, [INFO] [stderr] 122 | | BTreeSet, [INFO] [stderr] ... | [INFO] [stderr] 127 | | VecDeque [INFO] [stderr] 128 | | } [INFO] [stderr] | |_- in this macro invocation [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_parens)] on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> src/arbitrary.rs:112:47 [INFO] [stderr] | [INFO] [stderr] 112 | FromIteratorShrinker::new(($($placeholder::shrink()),*)) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] ... [INFO] [stderr] 119 | / generic_impls! { [INFO] [stderr] 120 | | Vec, [INFO] [stderr] 121 | | BTreeMap, [INFO] [stderr] 122 | | BTreeSet, [INFO] [stderr] ... | [INFO] [stderr] 127 | | VecDeque [INFO] [stderr] 128 | | } [INFO] [stderr] | |_- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> src/arbitrary.rs:108:48 [INFO] [stderr] | [INFO] [stderr] 108 | FromIteratorGenerator::new(($($placeholder::arbitrary()),*)) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] ... [INFO] [stderr] 119 | / generic_impls! { [INFO] [stderr] 120 | | Vec, [INFO] [stderr] 121 | | BTreeMap, [INFO] [stderr] 122 | | BTreeSet, [INFO] [stderr] ... | [INFO] [stderr] 127 | | VecDeque [INFO] [stderr] 128 | | } [INFO] [stderr] | |_- in this macro invocation [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rose.rs:7:23 [INFO] [stderr] | [INFO] [stderr] 7 | pub iterator: Box>> [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator>` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rose.rs:33:31 [INFO] [stderr] | [INFO] [stderr] 33 | fn iterator(&self) -> Box>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rose.rs:78:28 [INFO] [stderr] | [INFO] [stderr] 78 | where F: Fn(&T) -> Box> + 'static [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rose.rs:89:28 [INFO] [stderr] | [INFO] [stderr] 89 | where F: Fn(&T) -> Box> + 'static [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rose.rs:93:31 [INFO] [stderr] | [INFO] [stderr] 93 | fn iterator(&self) -> Box> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rose.rs:109:32 [INFO] [stderr] | [INFO] [stderr] 109 | where F: Fn(&S, &T) -> Box> + 'static [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rose.rs:121:32 [INFO] [stderr] | [INFO] [stderr] 121 | where F: Fn(&S, &T) -> Box> + 'static [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rose.rs:125:31 [INFO] [stderr] | [INFO] [stderr] 125 | fn iterator(&self) -> Box> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator` [INFO] [stderr] [INFO] [stderr] warning: lifetime may not live long enough [INFO] [stderr] --> src/generate.rs:22:9 [INFO] [stderr] | [INFO] [stderr] 13 | impl <'a, R: ?Sized + 'a> GenerateCtx<'a, R> { [INFO] [stderr] | -- lifetime `'a` defined here [INFO] [stderr] ... [INFO] [stderr] 19 | pub fn chop<'b>(&'b mut self) -> GenerateCtx<'b, R> [INFO] [stderr] | -- lifetime `'b` defined here [INFO] [stderr] ... [INFO] [stderr] 22 | Self::new(self.rng, self.size/2) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ argument requires that `'b` must outlive `'a` [INFO] [stderr] | [INFO] [stderr] = warning: this error has been downgraded to a warning for backwards compatibility with previous releases [INFO] [stderr] = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future [INFO] [stderr] = note: for more information, try `rustc --explain E0729` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 15.58s [INFO] running `"docker" "inspect" "22405dabe01c4867337954fb7b876aeda79a6b9b353ce62f4d14a0f7860dbd4c"` [INFO] running `"docker" "rm" "-f" "22405dabe01c4867337954fb7b876aeda79a6b9b353ce62f4d14a0f7860dbd4c"` [INFO] [stdout] 22405dabe01c4867337954fb7b876aeda79a6b9b353ce62f4d14a0f7860dbd4c [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/quickercheck/0.2.0:/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"` [INFO] [stdout] 76458098d37a792c2c94be4f41026d67b416be3f5db3b1de0f8831bd38301b78 [INFO] running `"docker" "start" "-a" "76458098d37a792c2c94be4f41026d67b416be3f5db3b1de0f8831bd38301b78"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.05s [INFO] [stderr] Running /opt/crater/target/debug/deps/quickercheck-551c2958bdbb1393 [INFO] [stdout] [INFO] [stdout] running 30 tests [INFO] [stdout] test generate::tests::gen_i8 ... ok [INFO] [stdout] test generate::tests::gen_unit ... ok [INFO] [stdout] test property::tests::test_for_all_property ... ok [INFO] [stdout] test property::tests::test_generic_property ... ok [INFO] [stdout] test property::tests::test_when_property ... ok [INFO] [stdout] test property::tests::test_simple_property ... ok [INFO] [stdout] test generate::tests::gen_u8 ... ok [INFO] [stdout] test testable::tests::property_is_testable ... ok [INFO] [stdout] test testable::tests::for_all_is_testable ... ok [INFO] [stdout] test testable::tests::property_returning_non_test_result_is_testable ... ok [INFO] [stdout] test tests::failing_reverse_combine ... ok [INFO] [stdout] test testable::tests::cast_fn_is_testable2 ... ok [INFO] [stdout] test testable::tests::property_is_testable_by_reference ... ok [INFO] [stdout] test testable::tests::for_all_with_two_arguments_is_testable ... ok [INFO] [stdout] test testable::tests::property_with_args_is_testable ... ok [INFO] [stdout] test testable::tests::cast_fn_is_testable ... ok [INFO] [stdout] test tests::sieve_not_all_primes ... ok [INFO] [stdout] test tests::sieve_not_prime ... ok [INFO] [stdout] test tests::max ... ok [INFO] [stdout] test tests::testable_result ... ok [INFO] [stdout] test tests::sort ... ok [INFO] [stdout] test tests::prop_reverse_reverse ... ok [INFO] [stdout] test tests::testable_result_err2 ... ok [INFO] [stdout] test testable::tests::when_property_is_testable ... ok [INFO] [stdout] test tests::reverse_app ... ok [INFO] [stdout] test tests::testable_unit ... ok [INFO] [stdout] test tests::failing_property ... ok [INFO] [stdout] test tests::reverse_single ... ok [INFO] [stdout] test tests::prop_oob ... ok [INFO] [stdout] test tests::testable_result_err ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Doc-tests quickercheck [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "76458098d37a792c2c94be4f41026d67b416be3f5db3b1de0f8831bd38301b78"` [INFO] running `"docker" "rm" "-f" "76458098d37a792c2c94be4f41026d67b416be3f5db3b1de0f8831bd38301b78"` [INFO] [stdout] 76458098d37a792c2c94be4f41026d67b416be3f5db3b1de0f8831bd38301b78