[INFO] crate stitches 0.1.0 is already in cache
[INFO] checking stitches-0.1.0 against master#30ca215b4e38b32aa7abdd635c5e2d56f5724494 for pr-66037
[INFO] extracting crate stitches 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate stitches 0.1.0 on toolchain 30ca215b4e38b32aa7abdd635c5e2d56f5724494
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate stitches 0.1.0
[INFO] finished tweaking crates.io crate stitches 0.1.0
[INFO] tweaked toml for crates.io crate stitches 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dcb34f14b02f8c8e269ee25edbf5db0831be169e8750ccbb5dc21621d82b2455
[INFO] running `"docker" "start" "-a" "dcb34f14b02f8c8e269ee25edbf5db0831be169e8750ccbb5dc21621d82b2455"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking crossbeam-epoch v0.8.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking stitches v0.1.0 (/opt/rustwide/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: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: 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: 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 9.12s
[INFO] running `"docker" "inspect" "dcb34f14b02f8c8e269ee25edbf5db0831be169e8750ccbb5dc21621d82b2455"`
[INFO] running `"docker" "rm" "-f" "dcb34f14b02f8c8e269ee25edbf5db0831be169e8750ccbb5dc21621d82b2455"`
[INFO] [stdout] dcb34f14b02f8c8e269ee25edbf5db0831be169e8750ccbb5dc21621d82b2455