[INFO] crate stitches 0.1.0 is already in cache
[INFO] extracting crate stitches 0.1.0 into work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/stitches/0.1.0
[INFO] extracting crate stitches 0.1.0 into work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/stitches/0.1.0
[INFO] validating manifest of stitches-0.1.0 on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of stitches-0.1.0 on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing stitches-0.1.0
[INFO] finished frobbing stitches-0.1.0
[INFO] frobbed toml for stitches-0.1.0 written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/stitches/0.1.0/Cargo.toml
[INFO] started frobbing stitches-0.1.0
[INFO] finished frobbing stitches-0.1.0
[INFO] frobbed toml for stitches-0.1.0 written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/stitches/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking stitches-0.1.0 against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-3/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/stitches/0.1.0:/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 778b5318b7a826fd027d801769f3e7f7bf0a2ebfee3a2194b42a145c3dae109d
[INFO] running `"docker" "start" "-a" "778b5318b7a826fd027d801769f3e7f7bf0a2ebfee3a2194b42a145c3dae109d"`
[INFO] [stderr]     Checking stitches v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/tree_search.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn initial(&self) -> Box<Iterator<Item = Self::Candidate>>;
[INFO] [stderr]   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Self::Candidate>`
[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/tree_search.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn initial(&self) -> Box<Iterator<Item = Self::Candidate>>;
[INFO] [stderr]   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Self::Candidate>`
[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/tree_search.rs:9:67
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn following<'s>(&'s self, candidate: Self::Candidate) -> Box<Iterator<Item = Self::Candidate> + 's>;
[INFO] [stderr]   |                                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Self::Candidate> + 's`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/tree_search.rs:9:67
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn following<'s>(&'s self, candidate: Self::Candidate) -> Box<Iterator<Item = Self::Candidate> + 's>;
[INFO] [stderr]   |                                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Self::Candidate> + 's`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `outer_len`
[INFO] [stderr]   --> src/fast_deque.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn outer_len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/fast_deque.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/fast_deque.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn get(&self, mut index: usize) -> Option<&T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek_head`
[INFO] [stderr]   --> src/fast_deque.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn peek_head(&self) -> Option<&T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `iter`
[INFO] [stderr]   --> src/fast_deque.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn iter(&self) -> impl Iterator<Item = &T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `outer_len`
[INFO] [stderr]   --> src/fast_deque.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn outer_len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/fast_deque.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/fast_deque.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn get(&self, mut index: usize) -> Option<&T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek_head`
[INFO] [stderr]   --> src/fast_deque.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn peek_head(&self) -> Option<&T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `iter`
[INFO] [stderr]   --> src/fast_deque.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn iter(&self) -> impl Iterator<Item = &T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `"docker" "inspect" "778b5318b7a826fd027d801769f3e7f7bf0a2ebfee3a2194b42a145c3dae109d"`
[INFO] running `"docker" "rm" "-f" "778b5318b7a826fd027d801769f3e7f7bf0a2ebfee3a2194b42a145c3dae109d"`
[INFO] [stdout] 778b5318b7a826fd027d801769f3e7f7bf0a2ebfee3a2194b42a145c3dae109d