[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] checking tslilyai/rustyrb against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftslilyai%2Frustyrb" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tslilyai/rustyrb on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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-2/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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] 04eca01716ba461068bf2186fa76e5185b9856a051175bc6900eae00a6453e08
[INFO] running `Command { std: "docker" "start" "-a" "04eca01716ba461068bf2186fa76e5185b9856a051175bc6900eae00a6453e08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04eca01716ba461068bf2186fa76e5185b9856a051175bc6900eae00a6453e08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04eca01716ba461068bf2186fa76e5185b9856a051175bc6900eae00a6453e08", kill_on_drop: false }`
[INFO] [stdout] 04eca01716ba461068bf2186fa76e5185b9856a051175bc6900eae00a6453e08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f543742962e9dcc78de972967a7f54eb8284da6c567fedcc415e6944e160dc2
[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" "4f543742962e9dcc78de972967a7f54eb8284da6c567fedcc415e6944e160dc2", kill_on_drop: false }`
[INFO] [stderr]     Checking 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: 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]     = 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: 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: 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]     = 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: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `Command { std: "docker" "inspect" "4f543742962e9dcc78de972967a7f54eb8284da6c567fedcc415e6944e160dc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f543742962e9dcc78de972967a7f54eb8284da6c567fedcc415e6944e160dc2", kill_on_drop: false }`
[INFO] [stdout] 4f543742962e9dcc78de972967a7f54eb8284da6c567fedcc415e6944e160dc2