[INFO] cloning repository https://github.com/dreamyang-liu/pp_server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dreamyang-liu/pp_server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdreamyang-liu%2Fpp_server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdreamyang-liu%2Fpp_server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3c74b3eb17ae50da871e8828999b6081733d3ecf
[INFO] checking dreamyang-liu/pp_server against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdreamyang-liu%2Fpp_server" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dreamyang-liu/pp_server on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dreamyang-liu/pp_server
[INFO] finished tweaking git repo https://github.com/dreamyang-liu/pp_server
[INFO] tweaked toml for git repo https://github.com/dreamyang-liu/pp_server written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dreamyang-liu/pp_server 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded uuid-macro-internal v1.5.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b5bdc092908a717a7ed9adfb5dd83786e00e569c972da80c3d0c29214eb2522a
[INFO] running `Command { std: "docker" "start" "-a" "b5bdc092908a717a7ed9adfb5dd83786e00e569c972da80c3d0c29214eb2522a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5bdc092908a717a7ed9adfb5dd83786e00e569c972da80c3d0c29214eb2522a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5bdc092908a717a7ed9adfb5dd83786e00e569c972da80c3d0c29214eb2522a", kill_on_drop: false }`
[INFO] [stdout] b5bdc092908a717a7ed9adfb5dd83786e00e569c972da80c3d0c29214eb2522a
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01df22a8672c062990c2b73b7b6760d5ca430a04a120a3c3acf5ed8e6ed0bb02
[INFO] running `Command { std: "docker" "start" "-a" "01df22a8672c062990c2b73b7b6760d5ca430a04a120a3c3acf5ed8e6ed0bb02", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking subprocess v0.2.9
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling uuid-macro-internal v1.5.0
[INFO] [stderr]     Checking uuid v1.5.0
[INFO] [stderr]     Checking pp_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `req_str`
[INFO] [stdout]   --> src/main.rs:12:17
[INFO] [stdout]    |
[INFO] [stdout] 12 |             let req_str = String::from_utf8_lossy(&buf);
[INFO] [stdout]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_req_str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_status` is never used
[INFO] [stdout]  --> src/worker_pool.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub trait WorkerPoolAbstract {
[INFO] [stdout]   |               ------------------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 6 |         fn print_status(&self);
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `process` is never read
[INFO] [stdout]   --> src/worker_pool.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 9  |     pub struct Worker {
[INFO] [stdout]    |                ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |         process: std::process::Child,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `req_str`
[INFO] [stdout]   --> src/main.rs:12:17
[INFO] [stdout]    |
[INFO] [stdout] 12 |             let req_str = String::from_utf8_lossy(&buf);
[INFO] [stdout]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_req_str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_status` is never used
[INFO] [stdout]  --> src/worker_pool.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub trait WorkerPoolAbstract {
[INFO] [stdout]   |               ------------------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 6 |         fn print_status(&self);
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `process` is never read
[INFO] [stdout]   --> src/worker_pool.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 9  |     pub struct Worker {
[INFO] [stdout]    |                ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |         process: std::process::Child,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.14s
[INFO] running `Command { std: "docker" "inspect" "01df22a8672c062990c2b73b7b6760d5ca430a04a120a3c3acf5ed8e6ed0bb02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01df22a8672c062990c2b73b7b6760d5ca430a04a120a3c3acf5ed8e6ed0bb02", kill_on_drop: false }`
[INFO] [stdout] 01df22a8672c062990c2b73b7b6760d5ca430a04a120a3c3acf5ed8e6ed0bb02