[INFO] cloning repository https://github.com/Brazilianian/leetcode_tasks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Brazilianian/leetcode_tasks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrazilianian%2Fleetcode_tasks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrazilianian%2Fleetcode_tasks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b861d849489e331039a80e06658bf2770e012b8
[INFO] building Brazilianian/leetcode_tasks against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrazilianian%2Fleetcode_tasks" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Brazilianian/leetcode_tasks on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Brazilianian/leetcode_tasks
[INFO] finished tweaking git repo https://github.com/Brazilianian/leetcode_tasks
[INFO] tweaked toml for git repo https://github.com/Brazilianian/leetcode_tasks written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Brazilianian/leetcode_tasks 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 49bf76959b0b5984188a91e7ebf8fafd2efa81c19d90be5a571c467c6cb8ffb8
[INFO] running `Command { std: "docker" "start" "-a" "49bf76959b0b5984188a91e7ebf8fafd2efa81c19d90be5a571c467c6cb8ffb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49bf76959b0b5984188a91e7ebf8fafd2efa81c19d90be5a571c467c6cb8ffb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49bf76959b0b5984188a91e7ebf8fafd2efa81c19d90be5a571c467c6cb8ffb8", kill_on_drop: false }`
[INFO] [stdout] 49bf76959b0b5984188a91e7ebf8fafd2efa81c19d90be5a571c467c6cb8ffb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dbed8229385b2959691fa934ce556b1f5a4eecdc4d7b2dce50ec84a60f6c04ce
[INFO] running `Command { std: "docker" "start" "-a" "dbed8229385b2959691fa934ce556b1f5a4eecdc4d7b2dce50ec84a60f6c04ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling untitled v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `HashMap` and `LinkedList`
[INFO] [stdout]  --> src/valid_parenthses.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, LinkedList};
[INFO] [stdout]   |                        ^^^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::metadata`
[INFO] [stdout]  --> src/merge_two_sorted_lists.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::metadata;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `push_front` found for struct `Vec<_>` in the current scope
[INFO] [stdout]   --> src/valid_parenthses.rs:16:44
[INFO] [stdout]    |
[INFO] [stdout] 16 |                     expected_close_bracket.push_front(char);
[INFO] [stdout]    |                                            ^^^^^^^^^^ method not found in `Vec<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `pop_front` found for struct `Vec<_>` in the current scope
[INFO] [stdout]   --> src/valid_parenthses.rs:19:50
[INFO] [stdout]    |
[INFO] [stdout] 19 |                     match expected_close_bracket.pop_front() {
[INFO] [stdout]    |                                                  ^^^^^^^^^ method not found in `Vec<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `untitled` (lib) due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "dbed8229385b2959691fa934ce556b1f5a4eecdc4d7b2dce50ec84a60f6c04ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbed8229385b2959691fa934ce556b1f5a4eecdc4d7b2dce50ec84a60f6c04ce", kill_on_drop: false }`
[INFO] [stdout] dbed8229385b2959691fa934ce556b1f5a4eecdc4d7b2dce50ec84a60f6c04ce