[INFO] cloning repository https://github.com/wzv5/leetcode_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wzv5/leetcode_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwzv5%2Fleetcode_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwzv5%2Fleetcode_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0c274a7babb8568c8839c7a4a5fc8a254e1db19d
[INFO] checking wzv5/leetcode_rs against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwzv5%2Fleetcode_rs" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wzv5/leetcode_rs on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wzv5/leetcode_rs
[INFO] finished tweaking git repo https://github.com/wzv5/leetcode_rs
[INFO] tweaked toml for git repo https://github.com/wzv5/leetcode_rs written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/wzv5/leetcode_rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "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-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a57d95c94ad8be4a30679235cd5a08687a5873a04125539a6ee21ae4139bf70d
[INFO] running `Command { std: "docker" "start" "-a" "a57d95c94ad8be4a30679235cd5a08687a5873a04125539a6ee21ae4139bf70d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a57d95c94ad8be4a30679235cd5a08687a5873a04125539a6ee21ae4139bf70d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a57d95c94ad8be4a30679235cd5a08687a5873a04125539a6ee21ae4139bf70d", kill_on_drop: false }`
[INFO] [stdout] a57d95c94ad8be4a30679235cd5a08687a5873a04125539a6ee21ae4139bf70d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 357405d2dd325eb6f01cb2c4598a83555c08f78e99e8ab1233ef077795bf9d57
[INFO] running `Command { std: "docker" "start" "-a" "357405d2dd325eb6f01cb2c4598a83555c08f78e99e8ab1233ef077795bf9d57", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling automod v1.0.2 (/opt/rustwide/workdir/automod)
[INFO] [stderr]     Checking leetcode_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/leetcode/10.regular-expression-matching.rs:9:21
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn is_match(s: String, p: String) -> bool {
[INFO] [stdout]   |                     ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]  --> src/leetcode/10.regular-expression-matching.rs:9:32
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn is_match(s: String, p: String) -> bool {
[INFO] [stdout]   |                                ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nums`
[INFO] [stdout]  --> src/leetcode/15.3-sum.rs:9:22
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn three_sum(nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stdout]   |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_nums`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nums`
[INFO] [stdout]  --> src/leetcode/16.3-sum-closest.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn three_sum_closest(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]   |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_nums`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]  --> src/leetcode/16.3-sum-closest.rs:9:46
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn three_sum_closest(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]   |                                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/leetcode/10.regular-expression-matching.rs:9:21
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn is_match(s: String, p: String) -> bool {
[INFO] [stdout]   |                     ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]  --> src/leetcode/10.regular-expression-matching.rs:9:32
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn is_match(s: String, p: String) -> bool {
[INFO] [stdout]   |                                ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nums`
[INFO] [stdout]  --> src/leetcode/15.3-sum.rs:9:22
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn three_sum(nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stdout]   |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_nums`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nums`
[INFO] [stdout]  --> src/leetcode/16.3-sum-closest.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn three_sum_closest(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]   |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_nums`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]  --> src/leetcode/16.3-sum-closest.rs:9:46
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn three_sum_closest(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]   |                                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.09s
[INFO] running `Command { std: "docker" "inspect" "357405d2dd325eb6f01cb2c4598a83555c08f78e99e8ab1233ef077795bf9d57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "357405d2dd325eb6f01cb2c4598a83555c08f78e99e8ab1233ef077795bf9d57", kill_on_drop: false }`
[INFO] [stdout] 357405d2dd325eb6f01cb2c4598a83555c08f78e99e8ab1233ef077795bf9d57