[INFO] cloning repository https://github.com/Fish1/rust-leetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Fish1/rust-leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFish1%2Frust-leetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFish1%2Frust-leetcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 51ec5165065b65d0b2fdaa0d7d53510d5a7f9d00
[INFO] checking Fish1/rust-leetcode against master#8f21a5c92ea55c348c275a1bc4fedbdf181e0d64 for pr-143011
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFish1%2Frust-leetcode" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Fish1/rust-leetcode
[INFO] finished tweaking git repo https://github.com/Fish1/rust-leetcode
[INFO] tweaked toml for git repo https://github.com/Fish1/rust-leetcode written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Fish1/rust-leetcode on toolchain 8f21a5c92ea55c348c275a1bc4fedbdf181e0d64
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Fish1/rust-leetcode already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f46f1383d87b1afcf090d0e25ffcb9bd23ef96c494c723ced3fc843fe3c6e3d
[INFO] running `Command { std: "docker" "start" "-a" "6f46f1383d87b1afcf090d0e25ffcb9bd23ef96c494c723ced3fc843fe3c6e3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f46f1383d87b1afcf090d0e25ffcb9bd23ef96c494c723ced3fc843fe3c6e3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f46f1383d87b1afcf090d0e25ffcb9bd23ef96c494c723ced3fc843fe3c6e3d", kill_on_drop: false }`
[INFO] [stdout] 6f46f1383d87b1afcf090d0e25ffcb9bd23ef96c494c723ced3fc843fe3c6e3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3383d611111e9f19b257c08c226906d85ccddf2c1ef1be81061c356278455a66
[INFO] running `Command { std: "docker" "start" "-a" "3383d611111e9f19b257c08c226906d85ccddf2c1ef1be81061c356278455a66", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> src/stacks/valid_parentheses.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     c1 = '{'
[INFO] [stdout]   |     ^^^^^^^^ expected `bool`, found `()`
[INFO] [stdout]   |
[INFO] [stdout] help: you might have meant to compare for equality
[INFO] [stdout]   |
[INFO] [stdout] 7 |     c1 == '{'
[INFO] [stdout]   |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> src/stacks/valid_parentheses.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     c1 = '{'
[INFO] [stdout]   |     ^^^^^^^^ expected `bool`, found `()`
[INFO] [stdout]   |
[INFO] [stdout] help: you might have meant to compare for equality
[INFO] [stdout]   |
[INFO] [stdout] 7 |     c1 == '{'
[INFO] [stdout]   |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `top`
[INFO] [stdout]   --> src/stacks/valid_parentheses.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |             let top = parens.pop().unwrap();
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_top`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `top`
[INFO] [stdout]   --> src/stacks/valid_parentheses.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |             let top = parens.pop().unwrap();
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_top`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `leetcode` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `leetcode` (lib test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "3383d611111e9f19b257c08c226906d85ccddf2c1ef1be81061c356278455a66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3383d611111e9f19b257c08c226906d85ccddf2c1ef1be81061c356278455a66", kill_on_drop: false }`
[INFO] [stdout] 3383d611111e9f19b257c08c226906d85ccddf2c1ef1be81061c356278455a66
