[INFO] crate stitches 0.1.0 is already in cache
[INFO] testing stitches-0.1.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate stitches 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate stitches 0.1.0 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "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-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7ab8c67aa06bea852229c920dfba6c7d15e4927b9a010ff8e20241cd87e24b8b
[INFO] running `"docker" "start" "-a" "7ab8c67aa06bea852229c920dfba6c7d15e4927b9a010ff8e20241cd87e24b8b"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling 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: associated function is never used: `outer_len`
[INFO] [stderr]   --> src/fast_deque.rs:36:12
[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: associated function is never used: `len`
[INFO] [stderr]   --> src/fast_deque.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get`
[INFO] [stderr]   --> src/fast_deque.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn get(&self, mut index: usize) -> Option<&T> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek_head`
[INFO] [stderr]   --> src/fast_deque.rs:63:12
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn peek_head(&self) -> Option<&T> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `iter`
[INFO] [stderr]   --> src/fast_deque.rs:67:12
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn iter(&self) -> impl Iterator<Item = &T> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "7ab8c67aa06bea852229c920dfba6c7d15e4927b9a010ff8e20241cd87e24b8b"`
[INFO] running `"docker" "rm" "-f" "7ab8c67aa06bea852229c920dfba6c7d15e4927b9a010ff8e20241cd87e24b8b"`
[INFO] [stdout] 7ab8c67aa06bea852229c920dfba6c7d15e4927b9a010ff8e20241cd87e24b8b
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1c64f07ca9d2cde1449a7dcb0cae5556deae4b836e89b0f3e69af49bbb99f25d
[INFO] running `"docker" "start" "-a" "1c64f07ca9d2cde1449a7dcb0cae5556deae4b836e89b0f3e69af49bbb99f25d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[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: associated function is never used: `outer_len`
[INFO] [stderr]   --> src/fast_deque.rs:36:12
[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: associated function is never used: `len`
[INFO] [stderr]   --> src/fast_deque.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get`
[INFO] [stderr]   --> src/fast_deque.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn get(&self, mut index: usize) -> Option<&T> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek_head`
[INFO] [stderr]   --> src/fast_deque.rs:63:12
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn peek_head(&self) -> Option<&T> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `iter`
[INFO] [stderr]   --> src/fast_deque.rs:67:12
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn iter(&self) -> impl Iterator<Item = &T> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]    Compiling 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: associated function is never used: `outer_len`
[INFO] [stderr]   --> src/fast_deque.rs:36:12
[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: associated function is never used: `len`
[INFO] [stderr]   --> src/fast_deque.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get`
[INFO] [stderr]   --> src/fast_deque.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn get(&self, mut index: usize) -> Option<&T> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek_head`
[INFO] [stderr]   --> src/fast_deque.rs:63:12
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn peek_head(&self) -> Option<&T> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `iter`
[INFO] [stderr]   --> src/fast_deque.rs:67:12
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn iter(&self) -> impl Iterator<Item = &T> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "1c64f07ca9d2cde1449a7dcb0cae5556deae4b836e89b0f3e69af49bbb99f25d"`
[INFO] running `"docker" "rm" "-f" "1c64f07ca9d2cde1449a7dcb0cae5556deae4b836e89b0f3e69af49bbb99f25d"`
[INFO] [stdout] 1c64f07ca9d2cde1449a7dcb0cae5556deae4b836e89b0f3e69af49bbb99f25d
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c3a012abb0d4ac00fcbd332035a3020cd2aa9d382541ac8da2eb692528c0702a
[INFO] running `"docker" "start" "-a" "c3a012abb0d4ac00fcbd332035a3020cd2aa9d382541ac8da2eb692528c0702a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[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: associated function is never used: `outer_len`
[INFO] [stderr]   --> src/fast_deque.rs:36:12
[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: associated function is never used: `len`
[INFO] [stderr]   --> src/fast_deque.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get`
[INFO] [stderr]   --> src/fast_deque.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn get(&self, mut index: usize) -> Option<&T> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek_head`
[INFO] [stderr]   --> src/fast_deque.rs:63:12
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn peek_head(&self) -> Option<&T> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `iter`
[INFO] [stderr]   --> src/fast_deque.rs:67:12
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn iter(&self) -> impl Iterator<Item = &T> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[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: associated function is never used: `outer_len`
[INFO] [stderr]   --> src/fast_deque.rs:36:12
[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: associated function is never used: `len`
[INFO] [stderr]   --> src/fast_deque.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get`
[INFO] [stderr]   --> src/fast_deque.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn get(&self, mut index: usize) -> Option<&T> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek_head`
[INFO] [stderr]   --> src/fast_deque.rs:63:12
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn peek_head(&self) -> Option<&T> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `iter`
[INFO] [stderr]   --> src/fast_deque.rs:67:12
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn iter(&self) -> impl Iterator<Item = &T> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/stitches-7d1ec39a06948d97
[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] [stderr]    Doc-tests stitches
[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" "c3a012abb0d4ac00fcbd332035a3020cd2aa9d382541ac8da2eb692528c0702a"`
[INFO] running `"docker" "rm" "-f" "c3a012abb0d4ac00fcbd332035a3020cd2aa9d382541ac8da2eb692528c0702a"`
[INFO] [stdout] c3a012abb0d4ac00fcbd332035a3020cd2aa9d382541ac8da2eb692528c0702a