[INFO] cloning repository https://github.com/sungshen/practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sungshen/practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsungshen%2Fpractice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsungshen%2Fpractice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 424302c594aec835df34bc285ed56fced83aa672
[INFO] checking sungshen/practice against try#0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef for pr-147859
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsungshen%2Fpractice" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sungshen/practice
[INFO] finished tweaking git repo https://github.com/sungshen/practice
[INFO] tweaked toml for git repo https://github.com/sungshen/practice written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sungshen/practice on toolchain 0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sungshen/practice 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" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01f5e6e6f9838e6008b5676ecb028a7e580222a87fa99ad1bf65cf6823f6e09c
[INFO] running `Command { std: "docker" "start" "-a" "01f5e6e6f9838e6008b5676ecb028a7e580222a87fa99ad1bf65cf6823f6e09c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01f5e6e6f9838e6008b5676ecb028a7e580222a87fa99ad1bf65cf6823f6e09c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01f5e6e6f9838e6008b5676ecb028a7e580222a87fa99ad1bf65cf6823f6e09c", kill_on_drop: false }`
[INFO] [stdout] 01f5e6e6f9838e6008b5676ecb028a7e580222a87fa99ad1bf65cf6823f6e09c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 638e2da4a9d2504cd331266704b53e12be3840f881c9ed45ba38c75291993446
[INFO] running `Command { std: "docker" "start" "-a" "638e2da4a9d2504cd331266704b53e12be3840f881c9ed45ba38c75291993446", kill_on_drop: false }`
[INFO] [stderr]     Checking practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::calculator::Calculator`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::calculator::Calculator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::calculator::Calculator`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::calculator::Calculator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `syntax`
[INFO] [stdout]   --> src/calculator.rs:40:29
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn spawn(&mut self, syntax: &str) {
[INFO] [stdout]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_syntax`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Operator` is never used
[INFO] [stdout]  --> src/calculator.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Operator {
[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: `syntax`
[INFO] [stdout]   --> src/calculator.rs:40:29
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn spawn(&mut self, syntax: &str) {
[INFO] [stdout]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_syntax`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Operator` is never used
[INFO] [stdout]  --> src/calculator.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Operator {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Calculator` is never constructed
[INFO] [stdout]  --> src/calculator.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Calculator <'a>{
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `calculate`, `new`, `show`, and `spawn` are never used
[INFO] [stdout]   --> src/calculator.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Calculator<'_> {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 18 |     pub fn calculate(mut self){
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn new() -> Calculator<'static>{
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn show(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn spawn(&mut self, syntax: &str) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Calculator` is never constructed
[INFO] [stdout]  --> src/calculator.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Calculator <'a>{
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `calculate`, `new`, `show`, and `spawn` are never used
[INFO] [stdout]   --> src/calculator.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Calculator<'_> {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 18 |     pub fn calculate(mut self){
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn new() -> Calculator<'static>{
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn show(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn spawn(&mut self, syntax: &str) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "638e2da4a9d2504cd331266704b53e12be3840f881c9ed45ba38c75291993446", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "638e2da4a9d2504cd331266704b53e12be3840f881c9ed45ba38c75291993446", kill_on_drop: false }`
[INFO] [stdout] 638e2da4a9d2504cd331266704b53e12be3840f881c9ed45ba38c75291993446
