[INFO] cloning repository https://github.com/tslilyai/rustyrb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tslilyai/rustyrb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftslilyai%2Frustyrb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftslilyai%2Frustyrb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5310109fba877afa137980dad4715e076b1e1124
[INFO] testing tslilyai/rustyrb against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftslilyai%2Frustyrb" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tslilyai/rustyrb 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 git repo https://github.com/tslilyai/rustyrb
[INFO] finished tweaking git repo https://github.com/tslilyai/rustyrb
[INFO] tweaked toml for git repo https://github.com/tslilyai/rustyrb written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/tslilyai/rustyrb already has a lockfile, it will not be regenerated
[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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stdout] 7586f13b7b2ad68c9ca41853c0977277297119589cdad9088d175a13033d09e5
[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" "7586f13b7b2ad68c9ca41853c0977277297119589cdad9088d175a13033d09e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7586f13b7b2ad68c9ca41853c0977277297119589cdad9088d175a13033d09e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7586f13b7b2ad68c9ca41853c0977277297119589cdad9088d175a13033d09e5", kill_on_drop: false }`
[INFO] [stdout] 7586f13b7b2ad68c9ca41853c0977277297119589cdad9088d175a13033d09e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] e00f8a3613465ad0bc72009edf60bcef7c057fe6c2e2ac7687a5e6203bfc89e3
[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" "e00f8a3613465ad0bc72009edf60bcef7c057fe6c2e2ac7687a5e6203bfc89e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustyrbtree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: private type `Node<K, V>` in public interface (error E0446)
[INFO] [stdout]    --> src/rbtree.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn delete_helper(&self, hptr: &NodeptrT<K,V>, key: K) -> NodeptrT<K,V> { 
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(private_in_public)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `height`
[INFO] [stdout]    --> src/rbtree.rs:324:12
[INFO] [stdout]     |
[INFO] [stdout] 324 |     pub fn height(&self) -> isize {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `height_helper`
[INFO] [stdout]    --> src/rbtree.rs:327:8
[INFO] [stdout]     |
[INFO] [stdout] 327 |     fn height_helper(&self, xptr: &NodeptrT<K,V>) -> isize {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "e00f8a3613465ad0bc72009edf60bcef7c057fe6c2e2ac7687a5e6203bfc89e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e00f8a3613465ad0bc72009edf60bcef7c057fe6c2e2ac7687a5e6203bfc89e3", kill_on_drop: false }`
[INFO] [stdout] e00f8a3613465ad0bc72009edf60bcef7c057fe6c2e2ac7687a5e6203bfc89e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 51cd2c6d92312c77aafeeb3cb30f21038ca31248755ce3541e3d799ed4ece6dd
[INFO] running `Command { std: "docker" "start" "-a" "51cd2c6d92312c77aafeeb3cb30f21038ca31248755ce3541e3d799ed4ece6dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustyrbtree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: private type `Node<K, V>` in public interface (error E0446)
[INFO] [stdout]    --> src/rbtree.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn delete_helper(&self, hptr: &NodeptrT<K,V>, key: K) -> NodeptrT<K,V> { 
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(private_in_public)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `height`
[INFO] [stdout]    --> src/rbtree.rs:324:12
[INFO] [stdout]     |
[INFO] [stdout] 324 |     pub fn height(&self) -> isize {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `height_helper`
[INFO] [stdout]    --> src/rbtree.rs:327:8
[INFO] [stdout]     |
[INFO] [stdout] 327 |     fn height_helper(&self, xptr: &NodeptrT<K,V>) -> isize {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "51cd2c6d92312c77aafeeb3cb30f21038ca31248755ce3541e3d799ed4ece6dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51cd2c6d92312c77aafeeb3cb30f21038ca31248755ce3541e3d799ed4ece6dd", kill_on_drop: false }`
[INFO] [stdout] 51cd2c6d92312c77aafeeb3cb30f21038ca31248755ce3541e3d799ed4ece6dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 92242f65aad859e14cb2f5b10645566183f2e621ab7bbdc76c21eddb797e2ea1
[INFO] running `Command { std: "docker" "start" "-a" "92242f65aad859e14cb2f5b10645566183f2e621ab7bbdc76c21eddb797e2ea1", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: private type `Node<K, V>` in public interface (error E0446)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/rbtree.rs:164:5
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 164 |     pub fn delete_helper(&self, hptr: &NodeptrT<K,V>, key: K) -> NodeptrT<K,V> { 
[INFO] [stdout] 
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(private_in_public)]` on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `height`
[INFO] [stderr]    --> src/rbtree.rs:324:12
[INFO] [stderr]     |
[INFO] [stderr] 324 |     pub fn height(&self) -> isize {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `height_helper`
[INFO] [stderr]    --> src/rbtree.rs:327:8
[INFO] [stderr]     |
[INFO] [stderr] 327 |     fn height_helper(&self, xptr: &NodeptrT<K,V>) -> isize {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rustyrbtree` (bin "rustyrbtree" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rustyrbtree-c314e7d9340174b6)
[INFO] running `Command { std: "docker" "inspect" "92242f65aad859e14cb2f5b10645566183f2e621ab7bbdc76c21eddb797e2ea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92242f65aad859e14cb2f5b10645566183f2e621ab7bbdc76c21eddb797e2ea1", kill_on_drop: false }`
[INFO] [stdout] 92242f65aad859e14cb2f5b10645566183f2e621ab7bbdc76c21eddb797e2ea1