[INFO] fetching crate cursed-collections 0.6.2...
[INFO] testing cursed-collections-0.6.2 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate cursed-collections 0.6.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate cursed-collections 0.6.2 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cursed-collections 0.6.2
[INFO] finished tweaking crates.io crate cursed-collections 0.6.2
[INFO] tweaked toml for crates.io crate cursed-collections 0.6.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cff609db5581fafb736dcf6d8b19772360933d8ccd8d64b6e6241a437fcb52ef
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cff609db5581fafb736dcf6d8b19772360933d8ccd8d64b6e6241a437fcb52ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cff609db5581fafb736dcf6d8b19772360933d8ccd8d64b6e6241a437fcb52ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cff609db5581fafb736dcf6d8b19772360933d8ccd8d64b6e6241a437fcb52ef", kill_on_drop: false }`
[INFO] [stdout] cff609db5581fafb736dcf6d8b19772360933d8ccd8d64b6e6241a437fcb52ef
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54ca0660c8f1d11896a6c22b8d075cb91bbc4514a94cded2a23ab8f8022beac4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "54ca0660c8f1d11896a6c22b8d075cb91bbc4514a94cded2a23ab8f8022beac4", kill_on_drop: false }`
[INFO] [stderr]    Compiling cursed-collections v0.6.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "54ca0660c8f1d11896a6c22b8d075cb91bbc4514a94cded2a23ab8f8022beac4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54ca0660c8f1d11896a6c22b8d075cb91bbc4514a94cded2a23ab8f8022beac4", kill_on_drop: false }`
[INFO] [stdout] 54ca0660c8f1d11896a6c22b8d075cb91bbc4514a94cded2a23ab8f8022beac4
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 177851eb3cb75c305806c49e9762273a754a90bedadacd7a43a89b39b47f5df4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "177851eb3cb75c305806c49e9762273a754a90bedadacd7a43a89b39b47f5df4", kill_on_drop: false }`
[INFO] [stderr]    Compiling cursed-collections v0.6.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/append_only_vec.rs:217:9
[INFO] [stdout]     |
[INFO] [stdout] 217 |         &vec[2];
[INFO] [stdout]     |         ^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 217 |         let _ = &vec[2];
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `Command { std: "docker" "inspect" "177851eb3cb75c305806c49e9762273a754a90bedadacd7a43a89b39b47f5df4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "177851eb3cb75c305806c49e9762273a754a90bedadacd7a43a89b39b47f5df4", kill_on_drop: false }`
[INFO] [stdout] 177851eb3cb75c305806c49e9762273a754a90bedadacd7a43a89b39b47f5df4
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cf732905f917580b936dbeaa8c77d1401767875913aa09f5b45c28d22f88e636
[INFO] running `Command { std: "docker" "start" "-a" "cf732905f917580b936dbeaa8c77d1401767875913aa09f5b45c28d22f88e636", kill_on_drop: false }`
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/append_only_vec.rs:217:9
[INFO] [stderr]     |
[INFO] [stderr] 217 |         &vec[2];
[INFO] [stderr]     |         ^^^^^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 217 |         let _ = &vec[2];
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `cursed-collections` (lib test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cursed_collections-e8b820bca48d37c0)
[INFO] [stdout] running 10 tests
[INFO] [stdout] test append_only_vec::tests::len_1 ... ok
[INFO] [stdout] test append_only_vec::tests::references_still_valid_after_another_segment_is_created ... ok
[INFO] [stdout] test lazy_array::tests::cannot_insert_twice ... ok
[INFO] [stdout] test append_only_vec::tests::index ... ok
[INFO] [stdout] test append_only_vec::tests::len_multiple_segments ... ok
[INFO] [stdout] test append_only_vec::tests::it_works ... ok
[INFO] [stdout] test append_only_vec::tests::len_empty ... ok
[INFO] [stdout] test lazy_array::tests::it_works ... ok
[INFO] [stderr]    Doc-tests cursed-collections
[INFO] [stdout] test append_only_vec::tests::index_out_of_bounds - should panic ... ok
[INFO] [stdout] test lazy_array::tests::cannot_put_out_of_bounds - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/append_only_vec.rs - append_only_vec::AppendOnlyVec (line 67) ... ok
[INFO] [stdout] test src/lazy_array.rs - lazy_array::LazyArray (line 10) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cf732905f917580b936dbeaa8c77d1401767875913aa09f5b45c28d22f88e636", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf732905f917580b936dbeaa8c77d1401767875913aa09f5b45c28d22f88e636", kill_on_drop: false }`
[INFO] [stdout] cf732905f917580b936dbeaa8c77d1401767875913aa09f5b45c28d22f88e636