[INFO] fetching crate cursed-collections 0.6.2...
[INFO] testing cursed-collections-0.6.2 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate cursed-collections 0.6.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate cursed-collections 0.6.2 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", 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] cd90091b1d9543334224f6934361f8b3a0ae7984815d1bae6be42dea93958cb8
[INFO] running `Command { std: "docker" "start" "-a" "cd90091b1d9543334224f6934361f8b3a0ae7984815d1bae6be42dea93958cb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd90091b1d9543334224f6934361f8b3a0ae7984815d1bae6be42dea93958cb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd90091b1d9543334224f6934361f8b3a0ae7984815d1bae6be42dea93958cb8", kill_on_drop: false }`
[INFO] [stdout] cd90091b1d9543334224f6934361f8b3a0ae7984815d1bae6be42dea93958cb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b0f1f66e275603339d14a725c2e4362780f13c9cda34d7c7bff67858fdbf364
[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" "5b0f1f66e275603339d14a725c2e4362780f13c9cda34d7c7bff67858fdbf364", kill_on_drop: false }`
[INFO] [stderr]    Compiling cursed-collections v0.6.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "5b0f1f66e275603339d14a725c2e4362780f13c9cda34d7c7bff67858fdbf364", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b0f1f66e275603339d14a725c2e4362780f13c9cda34d7c7bff67858fdbf364", kill_on_drop: false }`
[INFO] [stdout] 5b0f1f66e275603339d14a725c2e4362780f13c9cda34d7c7bff67858fdbf364
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 227db351fa4872689bec286a095eaf9424ae700e256f7961267170eb2039d19b
[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" "227db351fa4872689bec286a095eaf9424ae700e256f7961267170eb2039d19b", 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 1.10s
[INFO] running `Command { std: "docker" "inspect" "227db351fa4872689bec286a095eaf9424ae700e256f7961267170eb2039d19b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "227db351fa4872689bec286a095eaf9424ae700e256f7961267170eb2039d19b", kill_on_drop: false }`
[INFO] [stdout] 227db351fa4872689bec286a095eaf9424ae700e256f7961267170eb2039d19b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3c062fbaee776fcebcf68a944963c91a3b5d6a9140580582657b4782f28fa309
[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" "3c062fbaee776fcebcf68a944963c91a3b5d6a9140580582657b4782f28fa309", 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 0.02s
[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::it_works ... ok
[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 append_only_vec::tests::index ... ok
[INFO] [stdout] test append_only_vec::tests::len_empty ... ok
[INFO] [stdout] test lazy_array::tests::cannot_insert_twice ... ok
[INFO] [stdout] test append_only_vec::tests::len_multiple_segments ... ok
[INFO] [stdout] test lazy_array::tests::it_works ... ok
[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 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cursed-collections
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lazy_array.rs - lazy_array::LazyArray (line 10) ... ok
[INFO] [stdout] test src/append_only_vec.rs - append_only_vec::AppendOnlyVec (line 67) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.14s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3c062fbaee776fcebcf68a944963c91a3b5d6a9140580582657b4782f28fa309", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c062fbaee776fcebcf68a944963c91a3b5d6a9140580582657b4782f28fa309", kill_on_drop: false }`
[INFO] [stdout] 3c062fbaee776fcebcf68a944963c91a3b5d6a9140580582657b4782f28fa309