[INFO] fetching crate ring_buffer 2.0.2...
[INFO] testing ring_buffer-2.0.2 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate ring_buffer 2.0.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate ring_buffer 2.0.2
[INFO] finished tweaking crates.io crate ring_buffer 2.0.2
[INFO] tweaked toml for crates.io crate ring_buffer 2.0.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ring_buffer 2.0.2 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1de93306636c76fc58cafe20e68d9ea9727034bcbaf895bed1ac114f1231a768
[INFO] running `Command { std: "docker" "start" "-a" "1de93306636c76fc58cafe20e68d9ea9727034bcbaf895bed1ac114f1231a768", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1de93306636c76fc58cafe20e68d9ea9727034bcbaf895bed1ac114f1231a768", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1de93306636c76fc58cafe20e68d9ea9727034bcbaf895bed1ac114f1231a768", kill_on_drop: false }`
[INFO] [stdout] 1de93306636c76fc58cafe20e68d9ea9727034bcbaf895bed1ac114f1231a768
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 05fff33ff05bf399771882847844cce165c9dc042d2eea11c47dccd39a2c9384
[INFO] running `Command { std: "docker" "start" "-a" "05fff33ff05bf399771882847844cce165c9dc042d2eea11c47dccd39a2c9384", kill_on_drop: false }`
[INFO] [stderr]    Compiling ring_buffer v2.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:643:17
[INFO] [stdout]     |
[INFO] [stdout] 643 |     pub fn iter(&self) -> Iter<T> {
[INFO] [stdout]     |                 ^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 643 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:669:21
[INFO] [stdout]     |
[INFO] [stdout] 669 |     pub fn iter_mut(&mut self) -> IterMut<T> {
[INFO] [stdout]     |                     ^^^^^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 669 |     pub fn iter_mut(&mut self) -> IterMut<'_, T> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "05fff33ff05bf399771882847844cce165c9dc042d2eea11c47dccd39a2c9384", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05fff33ff05bf399771882847844cce165c9dc042d2eea11c47dccd39a2c9384", kill_on_drop: false }`
[INFO] [stdout] 05fff33ff05bf399771882847844cce165c9dc042d2eea11c47dccd39a2c9384
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3139d583af37c15f952d8abf2183229d2ace3217dda16b2aa42bcef18e6167c
[INFO] running `Command { std: "docker" "start" "-a" "d3139d583af37c15f952d8abf2183229d2ace3217dda16b2aa42bcef18e6167c", kill_on_drop: false }`
[INFO] [stderr]    Compiling ring_buffer v2.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:643:17
[INFO] [stdout]     |
[INFO] [stdout] 643 |     pub fn iter(&self) -> Iter<T> {
[INFO] [stdout]     |                 ^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 643 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:669:21
[INFO] [stdout]     |
[INFO] [stdout] 669 |     pub fn iter_mut(&mut self) -> IterMut<T> {
[INFO] [stdout]     |                     ^^^^^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 669 |     pub fn iter_mut(&mut self) -> IterMut<'_, T> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:643:17
[INFO] [stdout]     |
[INFO] [stdout] 643 |     pub fn iter(&self) -> Iter<T> {
[INFO] [stdout]     |                 ^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 643 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:669:21
[INFO] [stdout]     |
[INFO] [stdout] 669 |     pub fn iter_mut(&mut self) -> IterMut<T> {
[INFO] [stdout]     |                     ^^^^^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 669 |     pub fn iter_mut(&mut self) -> IterMut<'_, T> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "d3139d583af37c15f952d8abf2183229d2ace3217dda16b2aa42bcef18e6167c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3139d583af37c15f952d8abf2183229d2ace3217dda16b2aa42bcef18e6167c", kill_on_drop: false }`
[INFO] [stdout] d3139d583af37c15f952d8abf2183229d2ace3217dda16b2aa42bcef18e6167c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5e9f26bd73cc4c69966c7f5466e05de24071751f96f1aaaff6498ce3ed8c72e4
[INFO] running `Command { std: "docker" "start" "-a" "5e9f26bd73cc4c69966c7f5466e05de24071751f96f1aaaff6498ce3ed8c72e4", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:643:17
[INFO] [stderr]     |
[INFO] [stderr] 643 |     pub fn iter(&self) -> Iter<T> {
[INFO] [stderr]     |                 ^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 643 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stderr]     |                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:669:21
[INFO] [stderr]     |
[INFO] [stderr] 669 |     pub fn iter_mut(&mut self) -> IterMut<T> {
[INFO] [stderr]     |                     ^^^^^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 669 |     pub fn iter_mut(&mut self) -> IterMut<'_, T> {
[INFO] [stderr]     |                                           +++
[INFO] [stderr] 
[INFO] [stderr] warning: `ring_buffer` (lib) generated 2 warnings (run `cargo fix --lib -p ring_buffer` to apply 2 suggestions)
[INFO] [stderr] warning: `ring_buffer` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ring_buffer-ea9be4283a2efc3a)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests ring_buffer
[INFO] [stdout] test tests::access_and_reallocations ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 31 tests
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::front_absolute_index (line 371) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::get_absolute_mut (line 440) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::as_slices (line 133) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::back_mut (line 209) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::capacity (line 262) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::front (line 328) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::get_absolute (line 408) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::clear (line 277) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::get_absolute_mut_unchecked (line 516) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::get_relative_mut (line 568) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::back (line 189) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::back_absolute_index (line 232) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::get_relative (line 544) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::is_full (line 611) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::front_mut (line 348) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::iter (line 630) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::len (line 681) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::is_empty (line 594) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::get_absolute_unchecked (line 481) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::iter_mut (line 655) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::push_back (line 727) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::contains (line 303) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::pop_front (line 699) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::new (line 74) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::truncate (line 987) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::shrink_to_fit (line 874) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::shrink_to (line 804) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::with_capacity (line 87) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::swap_relative (line 899) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::reserve (line 773) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::swap_absolute (line 945) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 31 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.30s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5e9f26bd73cc4c69966c7f5466e05de24071751f96f1aaaff6498ce3ed8c72e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e9f26bd73cc4c69966c7f5466e05de24071751f96f1aaaff6498ce3ed8c72e4", kill_on_drop: false }`
[INFO] [stdout] 5e9f26bd73cc4c69966c7f5466e05de24071751f96f1aaaff6498ce3ed8c72e4