[INFO] cloning repository https://github.com/shcfighter/tokio-demo [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shcfighter/tokio-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshcfighter%2Ftokio-demo", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshcfighter%2Ftokio-demo'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 335edc19c1c59a8f74892c4819c10b07ed311912 [INFO] checking shcfighter/tokio-demo against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshcfighter%2Ftokio-demo" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/shcfighter/tokio-demo 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/shcfighter/tokio-demo [INFO] finished tweaking git repo https://github.com/shcfighter/tokio-demo [INFO] tweaked toml for git repo https://github.com/shcfighter/tokio-demo written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/shcfighter/tokio-demo 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7021be5449f7295baf1304b0cf9e12feca15869b6897b5ea20d275b8b6c5bc44 [INFO] running `Command { std: "docker" "start" "-a" "7021be5449f7295baf1304b0cf9e12feca15869b6897b5ea20d275b8b6c5bc44", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7021be5449f7295baf1304b0cf9e12feca15869b6897b5ea20d275b8b6c5bc44", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7021be5449f7295baf1304b0cf9e12feca15869b6897b5ea20d275b8b6c5bc44", kill_on_drop: false }` [INFO] [stdout] 7021be5449f7295baf1304b0cf9e12feca15869b6897b5ea20d275b8b6c5bc44 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7440db64352a2d3327a9d4656cf14ded1d7a3662233d7152ef0f26467659090d [INFO] running `Command { std: "docker" "start" "-a" "7440db64352a2d3327a9d4656cf14ded1d7a3662233d7152ef0f26467659090d", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.149 [INFO] [stderr] Compiling proc-macro2 v1.0.68 [INFO] [stderr] Compiling parking_lot_core v0.9.8 [INFO] [stderr] Checking smallvec v1.11.1 [INFO] [stderr] Compiling lock_api v0.4.10 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Compiling syn v2.0.38 [INFO] [stderr] Checking socket2 v0.5.4 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking signal-hook-registry v1.4.1 [INFO] [stderr] Checking mio v0.8.8 [INFO] [stderr] Checking parking_lot v0.12.1 [INFO] [stderr] Compiling tokio-macros v2.1.0 [INFO] [stderr] Checking tokio v1.32.0 [INFO] [stderr] Checking tokio-demo v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/ast/lexer.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `lexer::Argument` [INFO] [stdout] --> src/ast/mod.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | pub use lexer::Argument; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `lexer::ArgumentName` [INFO] [stdout] --> src/ast/mod.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | pub use lexer::ArgumentName; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/ast/lexer.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `lexer::Argument` [INFO] [stdout] --> src/ast/mod.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | pub use lexer::Argument; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `lexer::ArgumentName` [INFO] [stdout] --> src/ast/mod.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | pub use lexer::ArgumentName; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `args` is never read [INFO] [stdout] --> src/ast/lexer.rs:55:9 [INFO] [stdout] | [INFO] [stdout] 53 | pub struct Token { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 54 | pub state: SocketState, [INFO] [stdout] 55 | pub args: Vec, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `args` is never read [INFO] [stdout] --> src/ast/lexer.rs:55:9 [INFO] [stdout] | [INFO] [stdout] 53 | pub struct Token { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 54 | pub state: SocketState, [INFO] [stdout] 55 | pub args: Vec, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.71s [INFO] running `Command { std: "docker" "inspect" "7440db64352a2d3327a9d4656cf14ded1d7a3662233d7152ef0f26467659090d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7440db64352a2d3327a9d4656cf14ded1d7a3662233d7152ef0f26467659090d", kill_on_drop: false }` [INFO] [stdout] 7440db64352a2d3327a9d4656cf14ded1d7a3662233d7152ef0f26467659090d [INFO] checking shcfighter/tokio-demo against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshcfighter%2Ftokio-demo" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/shcfighter/tokio-demo 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/shcfighter/tokio-demo [INFO] finished tweaking git repo https://github.com/shcfighter/tokio-demo [INFO] tweaked toml for git repo https://github.com/shcfighter/tokio-demo written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/shcfighter/tokio-demo 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c5b3ca502335a430a8e951a7e39e7562bfc5a8b80d6c1535088dadda2f14a305 [INFO] running `Command { std: "docker" "start" "-a" "c5b3ca502335a430a8e951a7e39e7562bfc5a8b80d6c1535088dadda2f14a305", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c5b3ca502335a430a8e951a7e39e7562bfc5a8b80d6c1535088dadda2f14a305", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c5b3ca502335a430a8e951a7e39e7562bfc5a8b80d6c1535088dadda2f14a305", kill_on_drop: false }` [INFO] [stdout] c5b3ca502335a430a8e951a7e39e7562bfc5a8b80d6c1535088dadda2f14a305 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 9b51fe73f73ca0bf151c87d2268b97a9f6911c3d87d74cdde223c2976ff739d6 [INFO] running `Command { std: "docker" "start" "-a" "9b51fe73f73ca0bf151c87d2268b97a9f6911c3d87d74cdde223c2976ff739d6", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.149 [INFO] [stderr] Compiling proc-macro2 v1.0.68 [INFO] [stderr] Compiling parking_lot_core v0.9.8 [INFO] [stderr] Compiling lock_api v0.4.10 [INFO] [stderr] Checking smallvec v1.11.1 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Checking signal-hook-registry v1.4.1 [INFO] [stderr] Checking socket2 v0.5.4 [INFO] [stderr] Checking mio v0.8.8 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Compiling syn v2.0.38 [INFO] [stderr] Checking parking_lot v0.12.1 [INFO] [stderr] Compiling tokio-macros v2.1.0 [INFO] [stderr] Checking tokio v1.32.0 [INFO] [stderr] Checking tokio-demo v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/ast/lexer.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `lexer::Argument` [INFO] [stdout] --> src/ast/mod.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | pub use lexer::Argument; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `lexer::ArgumentName` [INFO] [stdout] --> src/ast/mod.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | pub use lexer::ArgumentName; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/ast/lexer.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `lexer::Argument` [INFO] [stdout] --> src/ast/mod.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | pub use lexer::Argument; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `lexer::ArgumentName` [INFO] [stdout] --> src/ast/mod.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | pub use lexer::ArgumentName; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `args` is never read [INFO] [stdout] --> src/ast/lexer.rs:55:9 [INFO] [stdout] | [INFO] [stdout] 53 | pub struct Token { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 54 | pub state: SocketState, [INFO] [stdout] 55 | pub args: Vec, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `args` is never read [INFO] [stdout] --> src/ast/lexer.rs:55:9 [INFO] [stdout] | [INFO] [stdout] 53 | pub struct Token { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 54 | pub state: SocketState, [INFO] [stdout] 55 | pub args: Vec, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [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 9.71s [INFO] running `Command { std: "docker" "inspect" "9b51fe73f73ca0bf151c87d2268b97a9f6911c3d87d74cdde223c2976ff739d6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9b51fe73f73ca0bf151c87d2268b97a9f6911c3d87d74cdde223c2976ff739d6", kill_on_drop: false }` [INFO] [stdout] 9b51fe73f73ca0bf151c87d2268b97a9f6911c3d87d74cdde223c2976ff739d6