[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#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frylynchen%2Fleetcode-rust" "/workspace/builds/worker-3/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rylynchen/leetcode-rust on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "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-3/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d443401b3eac6ea934a052e44c0e133a897e7e5f668dc44a34041572b3ea0622 [INFO] running `Command { std: "docker" "start" "-a" "d443401b3eac6ea934a052e44c0e133a897e7e5f668dc44a34041572b3ea0622", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d443401b3eac6ea934a052e44c0e133a897e7e5f668dc44a34041572b3ea0622", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d443401b3eac6ea934a052e44c0e133a897e7e5f668dc44a34041572b3ea0622", kill_on_drop: false }` [INFO] [stdout] d443401b3eac6ea934a052e44c0e133a897e7e5f668dc44a34041572b3ea0622 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c2346e2094d61177a7296ae782762ae861f4c4e9164a39b703a0c28ba8f4dda3 [INFO] running `Command { std: "docker" "start" "-a" "c2346e2094d61177a7296ae782762ae861f4c4e9164a39b703a0c28ba8f4dda3", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [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[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] [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` due to 4 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "c2346e2094d61177a7296ae782762ae861f4c4e9164a39b703a0c28ba8f4dda3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c2346e2094d61177a7296ae782762ae861f4c4e9164a39b703a0c28ba8f4dda3", kill_on_drop: false }` [INFO] [stdout] c2346e2094d61177a7296ae782762ae861f4c4e9164a39b703a0c28ba8f4dda3