[INFO] cloning repository https://github.com/dct233/zjy2-helper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dct233/zjy2-helper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdct233%2Fzjy2-helper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdct233%2Fzjy2-helper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 05b1e96bf3b234e2fe9c1f526256723eff3e6548
[INFO] checking dct233/zjy2-helper against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdct233%2Fzjy2-helper" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dct233/zjy2-helper
[INFO] finished tweaking git repo https://github.com/dct233/zjy2-helper
[INFO] tweaked toml for git repo https://github.com/dct233/zjy2-helper written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dct233/zjy2-helper on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dct233/zjy2-helper 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6296a354b42235848e19255809dbf18bf06ab670c5f13dda8f60204901b3acc4
[INFO] running `Command { std: "docker" "start" "-a" "6296a354b42235848e19255809dbf18bf06ab670c5f13dda8f60204901b3acc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6296a354b42235848e19255809dbf18bf06ab670c5f13dda8f60204901b3acc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6296a354b42235848e19255809dbf18bf06ab670c5f13dda8f60204901b3acc4", kill_on_drop: false }`
[INFO] [stdout] 6296a354b42235848e19255809dbf18bf06ab670c5f13dda8f60204901b3acc4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8dbd1b706ec8c5718473e052b4b8d5f783076e6a7ed48fd5c1233f5e4cbbfec8
[INFO] running `Command { std: "docker" "start" "-a" "8dbd1b706ec8c5718473e052b4b8d5f783076e6a7ed48fd5c1233f5e4cbbfec8", kill_on_drop: false }`
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[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]    --> src/client.rs:358:9
[INFO] [stdout]     |
[INFO] [stdout] 358 |     let res = client.post(UPLOAD)
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `rc_new` is never used
[INFO] [stdout]   --> src/json.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 64 |     pub fn rc_new(node: Vec<Rc<RefCell<TreeNode>>>) -> Self {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]    --> src/client.rs:358:9
[INFO] [stdout]     |
[INFO] [stdout] 358 |     let res = client.post(UPLOAD)
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `rc_new` is never used
[INFO] [stdout]   --> src/json.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 64 |     pub fn rc_new(node: Vec<Rc<RefCell<TreeNode>>>) -> Self {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.49s
[INFO] running `Command { std: "docker" "inspect" "8dbd1b706ec8c5718473e052b4b8d5f783076e6a7ed48fd5c1233f5e4cbbfec8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dbd1b706ec8c5718473e052b4b8d5f783076e6a7ed48fd5c1233f5e4cbbfec8", kill_on_drop: false }`
[INFO] [stdout] 8dbd1b706ec8c5718473e052b4b8d5f783076e6a7ed48fd5c1233f5e4cbbfec8