[INFO] fetching crate rt-lists 0.1.2...
[INFO] testing rt-lists-0.1.2 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rt-lists 0.1.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate rt-lists 0.1.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate rt-lists 0.1.2
[INFO] tweaked toml for crates.io crate rt-lists 0.1.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rt-lists 0.1.2 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "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" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] afb4e010732a38c1429f7ebbda67e2dadde7040438ab3cd8e82a3dc22edfeaf1
[INFO] running `Command { std: "docker" "start" "-a" "afb4e010732a38c1429f7ebbda67e2dadde7040438ab3cd8e82a3dc22edfeaf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "afb4e010732a38c1429f7ebbda67e2dadde7040438ab3cd8e82a3dc22edfeaf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afb4e010732a38c1429f7ebbda67e2dadde7040438ab3cd8e82a3dc22edfeaf1", kill_on_drop: false }`
[INFO] [stdout] afb4e010732a38c1429f7ebbda67e2dadde7040438ab3cd8e82a3dc22edfeaf1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f673711bfbb4c2efeafd52b0b77eb077432a97990384c607e8cb8666bb429ee3
[INFO] running `Command { std: "docker" "start" "-a" "f673711bfbb4c2efeafd52b0b77eb077432a97990384c607e8cb8666bb429ee3", kill_on_drop: false }`
[INFO] [stderr]    Compiling rt-lists v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/third.rs:60:15
[INFO] [stdout]    |
[INFO] [stdout] 60 |   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] 60 |   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/third.rs:64:19
[INFO] [stdout]    |
[INFO] [stdout] 64 |   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] 64 |   pub fn iter_mut(&mut self) -> IterMut<'_, T> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "f673711bfbb4c2efeafd52b0b77eb077432a97990384c607e8cb8666bb429ee3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f673711bfbb4c2efeafd52b0b77eb077432a97990384c607e8cb8666bb429ee3", kill_on_drop: false }`
[INFO] [stdout] f673711bfbb4c2efeafd52b0b77eb077432a97990384c607e8cb8666bb429ee3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aecb2c36ed7aec24bbc070e0a7d0242a6de1fde1e9e16ec8aeee10e66107c50e
[INFO] running `Command { std: "docker" "start" "-a" "aecb2c36ed7aec24bbc070e0a7d0242a6de1fde1e9e16ec8aeee10e66107c50e", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/third.rs:60:15
[INFO] [stdout]    |
[INFO] [stdout] 60 |   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] 60 |   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/third.rs:64:19
[INFO] [stdout]    |
[INFO] [stdout] 64 |   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] 64 |   pub fn iter_mut(&mut self) -> IterMut<'_, T> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rt-lists v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/third.rs:60:15
[INFO] [stdout]    |
[INFO] [stdout] 60 |   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] 60 |   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/third.rs:64:19
[INFO] [stdout]    |
[INFO] [stdout] 64 |   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] 64 |   pub fn iter_mut(&mut self) -> IterMut<'_, T> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "aecb2c36ed7aec24bbc070e0a7d0242a6de1fde1e9e16ec8aeee10e66107c50e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aecb2c36ed7aec24bbc070e0a7d0242a6de1fde1e9e16ec8aeee10e66107c50e", kill_on_drop: false }`
[INFO] [stdout] aecb2c36ed7aec24bbc070e0a7d0242a6de1fde1e9e16ec8aeee10e66107c50e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0e0ea0e78232d2ac7c826aa02f582c3b5417d3284857eb9bebb9fbc89de02078
[INFO] running `Command { std: "docker" "start" "-a" "0e0ea0e78232d2ac7c826aa02f582c3b5417d3284857eb9bebb9fbc89de02078", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/third.rs:60:15
[INFO] [stderr]    |
[INFO] [stderr] 60 |   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] 60 |   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/third.rs:64:19
[INFO] [stderr]    |
[INFO] [stderr] 64 |   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] 64 |   pub fn iter_mut(&mut self) -> IterMut<'_, T> {
[INFO] [stderr]    |                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: `rt-lists` (lib) generated 2 warnings (run `cargo fix --lib -p rt-lists` to apply 2 suggestions)
[INFO] [stderr] warning: `rt-lists` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rt_lists-1fd7656b7299e5a9)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] test first::test::basc_push_pop ... ok
[INFO] [stdout] test first::test::basics ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/second_test.rs (/opt/rustwide/target/debug/deps/second_test-aa214df41bbfb08d)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test second_test::basc_push_pop ... ok
[INFO] [stdout] test second_test::basics ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/third_test.rs (/opt/rustwide/target/debug/deps/third_test-7ccdf2a0d7ba8c7b)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test third_test::basics ... ok
[INFO] [stdout] test third_test::iter ... ok
[INFO] [stdout] test third_test::peek ... ok
[INFO] [stdout] test third_test::peek_mut ... ok
[INFO] [stdout] test third_test::iter_mut ... ok
[INFO] [stdout] test third_test::into_iter ... ok
[INFO] [stdout] test third_test::basic_push_pop_peek ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rt_lists
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - first (line 3) ... ok
[INFO] [stdout] test src/lib.rs - first (line 23) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.40s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0e0ea0e78232d2ac7c826aa02f582c3b5417d3284857eb9bebb9fbc89de02078", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e0ea0e78232d2ac7c826aa02f582c3b5417d3284857eb9bebb9fbc89de02078", kill_on_drop: false }`
[INFO] [stdout] 0e0ea0e78232d2ac7c826aa02f582c3b5417d3284857eb9bebb9fbc89de02078
