[INFO] fetching crate arenas 0.2.0...
[INFO] testing arenas-0.2.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate arenas 0.2.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate arenas 0.2.0
[INFO] finished tweaking crates.io crate arenas 0.2.0
[INFO] tweaked toml for crates.io crate arenas 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate arenas 0.2.0 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] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[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-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a6f9d14e24e78d20a4c50b9fb5a7978982c60d3ec7042964a7e34af40205e65
[INFO] running `Command { std: "docker" "start" "-a" "8a6f9d14e24e78d20a4c50b9fb5a7978982c60d3ec7042964a7e34af40205e65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a6f9d14e24e78d20a4c50b9fb5a7978982c60d3ec7042964a7e34af40205e65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a6f9d14e24e78d20a4c50b9fb5a7978982c60d3ec7042964a7e34af40205e65", kill_on_drop: false }`
[INFO] [stdout] 8a6f9d14e24e78d20a4c50b9fb5a7978982c60d3ec7042964a7e34af40205e65
[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=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] adb7cf338cbca8d51ff8c2486c84dd3d904b97c593f9acca73af7eba427a033a
[INFO] running `Command { std: "docker" "start" "-a" "adb7cf338cbca8d51ff8c2486c84dd3d904b97c593f9acca73af7eba427a033a", kill_on_drop: false }`
[INFO] [stderr]    Compiling arenas v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:239:23
[INFO] [stdout]     |
[INFO] [stdout] 239 |     pub fn iter_items(&self) -> ArenaItems<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] 239 |     pub fn iter_items(&self) -> ArenaItems<'_, T> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "adb7cf338cbca8d51ff8c2486c84dd3d904b97c593f9acca73af7eba427a033a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adb7cf338cbca8d51ff8c2486c84dd3d904b97c593f9acca73af7eba427a033a", kill_on_drop: false }`
[INFO] [stdout] adb7cf338cbca8d51ff8c2486c84dd3d904b97c593f9acca73af7eba427a033a
[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=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] 49bb1e9843461dc3984b62d7d63d097ffb5ad1a73a8779e9bc13c630ff35dae2
[INFO] running `Command { std: "docker" "start" "-a" "49bb1e9843461dc3984b62d7d63d097ffb5ad1a73a8779e9bc13c630ff35dae2", kill_on_drop: false }`
[INFO] [stderr]    Compiling arenas v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:239:23
[INFO] [stdout]     |
[INFO] [stdout] 239 |     pub fn iter_items(&self) -> ArenaItems<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] 239 |     pub fn iter_items(&self) -> ArenaItems<'_, T> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:239:23
[INFO] [stdout]     |
[INFO] [stdout] 239 |     pub fn iter_items(&self) -> ArenaItems<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] 239 |     pub fn iter_items(&self) -> ArenaItems<'_, T> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "49bb1e9843461dc3984b62d7d63d097ffb5ad1a73a8779e9bc13c630ff35dae2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49bb1e9843461dc3984b62d7d63d097ffb5ad1a73a8779e9bc13c630ff35dae2", kill_on_drop: false }`
[INFO] [stdout] 49bb1e9843461dc3984b62d7d63d097ffb5ad1a73a8779e9bc13c630ff35dae2
[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=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] 0f5ab79e341ef8494a91eda34d17fb69e0594f97332f8ed6bb2b5d957d2f7182
[INFO] running `Command { std: "docker" "start" "-a" "0f5ab79e341ef8494a91eda34d17fb69e0594f97332f8ed6bb2b5d957d2f7182", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:239:23
[INFO] [stderr]     |
[INFO] [stderr] 239 |     pub fn iter_items(&self) -> ArenaItems<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] 239 |     pub fn iter_items(&self) -> ArenaItems<'_, T> {
[INFO] [stderr]     |                                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: `arenas` (lib) generated 1 warning (run `cargo fix --lib -p arenas` to apply 1 suggestion)
[INFO] [stderr] warning: `arenas` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/arenas-f96a5cf9b92ead18)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test tests::get ... ok
[INFO] [stdout] test tests::get_out_of_bounds_is_none ... ok
[INFO] [stdout] test tests::get_nonexistent_is_none ... ok
[INFO] [stdout] test tests::insert ... ok
[INFO] [stdout] test tests::remove ... ok
[INFO] [stdout] test tests::remove_nonexistent_is_none ... ok
[INFO] [stdout] test tests::remove_out_of_bounds_is_none ... ok
[INFO] [stdout] test tests::index_nonexistent_panics - should panic ... ok
[INFO] [stdout] test tests::index_out_of_bounds_panics - should panic ... ok
[INFO] [stdout] test tests::validate - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests arenas
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - Arena<T>::insert_reserved (line 166) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.32s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0f5ab79e341ef8494a91eda34d17fb69e0594f97332f8ed6bb2b5d957d2f7182", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f5ab79e341ef8494a91eda34d17fb69e0594f97332f8ed6bb2b5d957d2f7182", kill_on_drop: false }`
[INFO] [stdout] 0f5ab79e341ef8494a91eda34d17fb69e0594f97332f8ed6bb2b5d957d2f7182