[INFO] cloning repository https://github.com/rylynchen/leetcode-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rylynchen/leetcode-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frylynchen%2Fleetcode-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frylynchen%2Fleetcode-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b0ea50f96e1d8a7a410028dd7178137d678d0aea [INFO] checking rylynchen/leetcode-rust against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frylynchen%2Fleetcode-rust" "/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/rylynchen/leetcode-rust on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/rylynchen/leetcode-rust [INFO] finished tweaking git repo https://github.com/rylynchen/leetcode-rust [INFO] tweaked toml for git repo https://github.com/rylynchen/leetcode-rust written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/rylynchen/leetcode-rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4dc271c259c2fd7e4d52e56bc106dde924595adbf9e9fd593e39e015122ab088 [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" "4dc271c259c2fd7e4d52e56bc106dde924595adbf9e9fd593e39e015122ab088", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4dc271c259c2fd7e4d52e56bc106dde924595adbf9e9fd593e39e015122ab088", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4dc271c259c2fd7e4d52e56bc106dde924595adbf9e9fd593e39e015122ab088", kill_on_drop: false }` [INFO] [stdout] 4dc271c259c2fd7e4d52e56bc106dde924595adbf9e9fd593e39e015122ab088 [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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ac1dbee324534a0ce720ac8dbb6a30e5f2d9332cae238c4185f553fe84944523 [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" "ac1dbee324534a0ce720ac8dbb6a30e5f2d9332cae238c4185f553fe84944523", kill_on_drop: false }` [INFO] [stderr] Checking leetcode v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> src/bin/144_binary-tree-preorder-traversal.rs:32:34 [INFO] [stdout] | [INFO] [stdout] 32 | stack.push(Some(node.borrow().val)); [INFO] [stdout] | -----^^^^^^-- [INFO] [stdout] | | | [INFO] [stdout] | | cannot infer type for type parameter `Borrowed` declared on the trait `Borrow` [INFO] [stdout] | this method call resolves to `&Borrowed` [INFO] [stdout] | [INFO] [stdout] = note: type must be known at this point [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> src/bin/144_binary-tree-preorder-traversal.rs:32:34 [INFO] [stdout] | [INFO] [stdout] 32 | stack.push(Some(node.borrow().val)); [INFO] [stdout] | -----^^^^^^-- [INFO] [stdout] | | | [INFO] [stdout] | | cannot infer type for type parameter `Borrowed` declared on the trait `Borrow` [INFO] [stdout] | this method call resolves to `&Borrowed` [INFO] [stdout] | [INFO] [stdout] = note: type must be known at this point [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0609]: no field `val` on type `&_` [INFO] [stdout] --> src/bin/144_binary-tree-preorder-traversal.rs:32:43 [INFO] [stdout] | [INFO] [stdout] 32 | stack.push(Some(node.borrow().val)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0609]: no field `val` on type `&_` [INFO] [stdout] --> src/bin/144_binary-tree-preorder-traversal.rs:32:43 [INFO] [stdout] | [INFO] [stdout] 32 | stack.push(Some(node.borrow().val)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0609]: no field `val` on type `&Option>>` [INFO] [stdout] --> src/bin/144_binary-tree-preorder-traversal.rs:42:30 [INFO] [stdout] | [INFO] [stdout] 42 | stack.push(root.borrow().val); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 3 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0282, E0609. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stderr] error: could not compile `leetcode` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error[E0609]: no field `val` on type `&Option>>` [INFO] [stdout] --> src/bin/144_binary-tree-preorder-traversal.rs:42:30 [INFO] [stdout] | [INFO] [stdout] 42 | stack.push(root.borrow().val); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 3 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0282, E0609. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "ac1dbee324534a0ce720ac8dbb6a30e5f2d9332cae238c4185f553fe84944523", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ac1dbee324534a0ce720ac8dbb6a30e5f2d9332cae238c4185f553fe84944523", kill_on_drop: false }` [INFO] [stdout] ac1dbee324534a0ce720ac8dbb6a30e5f2d9332cae238c4185f553fe84944523