[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 never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdreamyang-liu%2Fpp_server" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-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-2-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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] fab1292c9b3c8112303ed37ae5203968c856ed8d3b4836363cd9c4973aa713d4 [INFO] running `Command { std: "docker" "start" "-a" "fab1292c9b3c8112303ed37ae5203968c856ed8d3b4836363cd9c4973aa713d4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fab1292c9b3c8112303ed37ae5203968c856ed8d3b4836363cd9c4973aa713d4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fab1292c9b3c8112303ed37ae5203968c856ed8d3b4836363cd9c4973aa713d4", kill_on_drop: false }` [INFO] [stdout] fab1292c9b3c8112303ed37ae5203968c856ed8d3b4836363cd9c4973aa713d4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 76987d66c66d632d575afcf792e246e75235097961fdf9f801d311e3a650376c [INFO] running `Command { std: "docker" "start" "-a" "76987d66c66d632d575afcf792e246e75235097961fdf9f801d311e3a650376c", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.150 [INFO] [stderr] Compiling winapi-build v0.1.1 [INFO] [stderr] Compiling proc-macro2 v1.0.69 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Checking winapi v0.2.8 [INFO] [stderr] Checking ppv-lite86 v0.2.17 [INFO] [stderr] Checking regex-syntax v0.3.9 [INFO] [stderr] Checking utf8-ranges v0.1.3 [INFO] [stderr] Compiling kernel32-sys v0.2.2 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Checking getrandom v0.2.10 [INFO] [stderr] Checking memchr v0.1.11 [INFO] [stderr] Checking thread-id v2.0.0 [INFO] [stderr] Checking time v0.1.45 [INFO] [stderr] Checking subprocess v0.2.9 [INFO] [stderr] Checking thread_local v0.2.7 [INFO] [stderr] Checking aho-corasick v0.5.3 [INFO] [stderr] Compiling syn v2.0.39 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking regex v0.1.80 [INFO] [stderr] Checking rand v0.8.5 [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: 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: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.97s [INFO] running `Command { std: "docker" "inspect" "76987d66c66d632d575afcf792e246e75235097961fdf9f801d311e3a650376c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "76987d66c66d632d575afcf792e246e75235097961fdf9f801d311e3a650376c", kill_on_drop: false }` [INFO] [stdout] 76987d66c66d632d575afcf792e246e75235097961fdf9f801d311e3a650376c [INFO] checking dreamyang-liu/pp_server against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdreamyang-liu%2Fpp_server" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/dreamyang-liu/pp_server on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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-2-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 70f2429038529691fe2e8fecf2c36f3eea52c850bc31b28481f00c7beaad8c62 [INFO] running `Command { std: "docker" "start" "-a" "70f2429038529691fe2e8fecf2c36f3eea52c850bc31b28481f00c7beaad8c62", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "70f2429038529691fe2e8fecf2c36f3eea52c850bc31b28481f00c7beaad8c62", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "70f2429038529691fe2e8fecf2c36f3eea52c850bc31b28481f00c7beaad8c62", kill_on_drop: false }` [INFO] [stdout] 70f2429038529691fe2e8fecf2c36f3eea52c850bc31b28481f00c7beaad8c62 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 51cacddc3e5a26a97c48a12901cfd681c88122864eaf536eecb54cb38c68f907 [INFO] running `Command { std: "docker" "start" "-a" "51cacddc3e5a26a97c48a12901cfd681c88122864eaf536eecb54cb38c68f907", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.150 [INFO] [stderr] Compiling winapi-build v0.1.1 [INFO] [stderr] Compiling proc-macro2 v1.0.69 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Checking winapi v0.2.8 [INFO] [stderr] Checking ppv-lite86 v0.2.17 [INFO] [stderr] Checking utf8-ranges v0.1.3 [INFO] [stderr] Checking regex-syntax v0.3.9 [INFO] [stderr] Compiling kernel32-sys v0.2.2 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Checking getrandom v0.2.10 [INFO] [stderr] Compiling syn v2.0.39 [INFO] [stderr] Checking thread-id v2.0.0 [INFO] [stderr] Checking memchr v0.1.11 [INFO] [stderr] Checking time v0.1.45 [INFO] [stderr] Checking subprocess v0.2.9 [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 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 6.33s [INFO] running `Command { std: "docker" "inspect" "51cacddc3e5a26a97c48a12901cfd681c88122864eaf536eecb54cb38c68f907", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "51cacddc3e5a26a97c48a12901cfd681c88122864eaf536eecb54cb38c68f907", kill_on_drop: false }` [INFO] [stdout] 51cacddc3e5a26a97c48a12901cfd681c88122864eaf536eecb54cb38c68f907