[INFO] cloning repository https://github.com/xiaoyureed/rust_tools [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xiaoyureed/rust_tools" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxiaoyureed%2Frust_tools", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxiaoyureed%2Frust_tools'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 03c54ef44f3d78eb7318c2e0604a2b421de99d3e [INFO] checking xiaoyureed/rust_tools against try#ef5216c337126ffe24d074826f4023948c4a9b8e for pr-137033 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxiaoyureed%2Frust_tools" "/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/xiaoyureed/rust_tools on toolchain ef5216c337126ffe24d074826f4023948c4a9b8e [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ef5216c337126ffe24d074826f4023948c4a9b8e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/xiaoyureed/rust_tools [INFO] finished tweaking git repo https://github.com/xiaoyureed/rust_tools [INFO] tweaked toml for git repo https://github.com/xiaoyureed/rust_tools written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/xiaoyureed/rust_tools 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" "+ef5216c337126ffe24d074826f4023948c4a9b8e" "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-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+ef5216c337126ffe24d074826f4023948c4a9b8e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c60a30d58245167248dde97041f25f8ecd44f11a74216a9c7bce5296ab08ddde [INFO] running `Command { std: "docker" "start" "-a" "c60a30d58245167248dde97041f25f8ecd44f11a74216a9c7bce5296ab08ddde", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c60a30d58245167248dde97041f25f8ecd44f11a74216a9c7bce5296ab08ddde", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c60a30d58245167248dde97041f25f8ecd44f11a74216a9c7bce5296ab08ddde", kill_on_drop: false }` [INFO] [stdout] c60a30d58245167248dde97041f25f8ecd44f11a74216a9c7bce5296ab08ddde [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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+ef5216c337126ffe24d074826f4023948c4a9b8e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 182cd4e9771bf41ecdbccc516747fc371be667947e7b275f761ea906c1662ab2 [INFO] running `Command { std: "docker" "start" "-a" "182cd4e9771bf41ecdbccc516747fc371be667947e7b275f761ea906c1662ab2", kill_on_drop: false }` [INFO] [stderr] Checking rust_tools v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/bin/chat_client.rs:15:10 [INFO] [stdout] | [INFO] [stdout] 15 | let (s, r) = channel::(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/bin/chat_server.rs:96:5 [INFO] [stdout] | [INFO] [stdout] 25 | / loop { [INFO] [stdout] 26 | | // 接收一个客户端的连接 [INFO] [stdout] 27 | | let (mut socket_client, addr_client) = listener.accept()?; [INFO] [stdout] ... | [INFO] [stdout] 78 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] ... [INFO] [stdout] 96 | / match r.try_recv() { [INFO] [stdout] 97 | | Ok(msg) => { [INFO] [stdout] 98 | | clients = clients [INFO] [stdout] 99 | | .into_iter() [INFO] [stdout] ... | [INFO] [stdout] 107 | | Err(_) => println!("error of try_recv"), [INFO] [stdout] 108 | | } [INFO] [stdout] | |_____^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/bin/chat_client.rs:15:10 [INFO] [stdout] | [INFO] [stdout] 15 | let (s, r) = channel::(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/bin/chat_server.rs:96:5 [INFO] [stdout] | [INFO] [stdout] 25 | / loop { [INFO] [stdout] 26 | | // 接收一个客户端的连接 [INFO] [stdout] 27 | | let (mut socket_client, addr_client) = listener.accept()?; [INFO] [stdout] ... | [INFO] [stdout] 78 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] ... [INFO] [stdout] 96 | / match r.try_recv() { [INFO] [stdout] 97 | | Ok(msg) => { [INFO] [stdout] 98 | | clients = clients [INFO] [stdout] 99 | | .into_iter() [INFO] [stdout] ... | [INFO] [stdout] 107 | | Err(_) => println!("error of try_recv"), [INFO] [stdout] 108 | | } [INFO] [stdout] | |_____^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0004]: non-exhaustive patterns: `Ok(_)` and `Err(_)` not covered [INFO] [stdout] --> src/bin/chat_client.rs:34:15 [INFO] [stdout] | [INFO] [stdout] 34 | match r.try_recv() {} [INFO] [stdout] | ^^^^^^^^^^^^ patterns `Ok(_)` and `Err(_)` not covered [INFO] [stdout] | [INFO] [stdout] note: `Result` defined here [INFO] [stdout] --> /rustc/ef5216c337126ffe24d074826f4023948c4a9b8e/library/core/src/result.rs:528:1 [INFO] [stdout] ::: /rustc/ef5216c337126ffe24d074826f4023948c4a9b8e/library/core/src/result.rs:532:5 [INFO] [stdout] | [INFO] [stdout] = note: not covered [INFO] [stdout] ::: /rustc/ef5216c337126ffe24d074826f4023948c4a9b8e/library/core/src/result.rs:537:5 [INFO] [stdout] | [INFO] [stdout] = note: not covered [INFO] [stdout] = note: the matched value is of type `Result` [INFO] [stdout] help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms [INFO] [stdout] | [INFO] [stdout] 34 ~ match r.try_recv() { [INFO] [stdout] 35 + Ok(_) | Err(_) => todo!(), [INFO] [stdout] 36 + } [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0004]: non-exhaustive patterns: `Ok(_)` and `Err(_)` not covered [INFO] [stdout] --> src/bin/chat_client.rs:34:15 [INFO] [stdout] | [INFO] [stdout] 34 | match r.try_recv() {} [INFO] [stdout] | ^^^^^^^^^^^^ patterns `Ok(_)` and `Err(_)` not covered [INFO] [stdout] | [INFO] [stdout] note: `Result` defined here [INFO] [stdout] --> /rustc/ef5216c337126ffe24d074826f4023948c4a9b8e/library/core/src/result.rs:528:1 [INFO] [stdout] ::: /rustc/ef5216c337126ffe24d074826f4023948c4a9b8e/library/core/src/result.rs:532:5 [INFO] [stdout] | [INFO] [stdout] = note: not covered [INFO] [stdout] ::: /rustc/ef5216c337126ffe24d074826f4023948c4a9b8e/library/core/src/result.rs:537:5 [INFO] [stdout] | [INFO] [stdout] = note: not covered [INFO] [stdout] = note: the matched value is of type `Result` [INFO] [stdout] help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms [INFO] [stdout] | [INFO] [stdout] 34 ~ match r.try_recv() { [INFO] [stdout] 35 + Ok(_) | Err(_) => todo!(), [INFO] [stdout] 36 + } [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/chat_client.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let mut socket = TcpStream::connect(SERVER_ADDR)?; [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/chat_client.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let mut socket = TcpStream::connect(SERVER_ADDR)?; [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0004`. [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0004`. [INFO] [stdout] [INFO] [stdout] warning: field `flag` is never read [INFO] [stdout] --> src/bin/port_sniffer.rs:77:5 [INFO] [stdout] | [INFO] [stdout] 76 | struct Args { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 77 | flag: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust_tools` (bin "chat_client") due to 1 previous error; 2 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `rust_tools` (bin "chat_client" test) due to 1 previous error; 2 warnings emitted [INFO] [stdout] warning: field `flag` is never read [INFO] [stdout] --> src/bin/port_sniffer.rs:77:5 [INFO] [stdout] | [INFO] [stdout] 76 | struct Args { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 77 | flag: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r` [INFO] [stdout] --> src/bin/chat_server.rs:24:13 [INFO] [stdout] | [INFO] [stdout] 24 | let (s, r) = channel::(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_r` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `clients` is never read [INFO] [stdout] --> src/bin/chat_server.rs:98:13 [INFO] [stdout] | [INFO] [stdout] 98 | clients = clients [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r` [INFO] [stdout] --> src/bin/chat_server.rs:24:13 [INFO] [stdout] | [INFO] [stdout] 24 | let (s, r) = channel::(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_r` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `clients` is never read [INFO] [stdout] --> src/bin/chat_server.rs:98:13 [INFO] [stdout] | [INFO] [stdout] 98 | clients = clients [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "182cd4e9771bf41ecdbccc516747fc371be667947e7b275f761ea906c1662ab2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "182cd4e9771bf41ecdbccc516747fc371be667947e7b275f761ea906c1662ab2", kill_on_drop: false }` [INFO] [stdout] 182cd4e9771bf41ecdbccc516747fc371be667947e7b275f761ea906c1662ab2