[INFO] crate quickercheck 0.2.0 is already in cache [INFO] extracting crate quickercheck 0.2.0 into work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/reg/quickercheck/0.2.0 [INFO] extracting crate quickercheck 0.2.0 into work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/reg/quickercheck/0.2.0 [INFO] validating manifest of quickercheck-0.2.0 on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504 [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of quickercheck-0.2.0 on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044 [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "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/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/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/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/reg/quickercheck/0.2.0/Cargo.toml [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] checking quickercheck-0.2.0 against master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504 for pr-61100 [INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-5/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/reg/quickercheck/0.2.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] a1dcd16947b22fa077bd694f0aa994f04b45efe31e6e49cf88a0417bedf2e0a8 [INFO] running `"docker" "start" "-a" "a1dcd16947b22fa077bd694f0aa994f04b45efe31e6e49cf88a0417bedf2e0a8"` [INFO] [stderr] Checking quickercheck v0.2.0 (/opt/crater/workdir) [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: 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: 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] 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 12.64s [INFO] running `"docker" "inspect" "a1dcd16947b22fa077bd694f0aa994f04b45efe31e6e49cf88a0417bedf2e0a8"` [INFO] running `"docker" "rm" "-f" "a1dcd16947b22fa077bd694f0aa994f04b45efe31e6e49cf88a0417bedf2e0a8"` [INFO] [stdout] a1dcd16947b22fa077bd694f0aa994f04b45efe31e6e49cf88a0417bedf2e0a8