[INFO] cloning repository https://github.com/zxcmc11/rust_greeting [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zxcmc11/rust_greeting" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzxcmc11%2Frust_greeting", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzxcmc11%2Frust_greeting'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 27296f68f564001ea61ab2b2638edf06d2a89629 [INFO] checking zxcmc11/rust_greeting against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzxcmc11%2Frust_greeting" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/zxcmc11/rust_greeting [INFO] finished tweaking git repo https://github.com/zxcmc11/rust_greeting [INFO] tweaked toml for git repo https://github.com/zxcmc11/rust_greeting written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/zxcmc11/rust_greeting on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/zxcmc11/rust_greeting 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 67d65b2c078779bc571d823aadf17dc7d923ae523a0e537f63a8b68c2d62b161 [INFO] running `Command { std: "docker" "start" "-a" "67d65b2c078779bc571d823aadf17dc7d923ae523a0e537f63a8b68c2d62b161", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "67d65b2c078779bc571d823aadf17dc7d923ae523a0e537f63a8b68c2d62b161", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "67d65b2c078779bc571d823aadf17dc7d923ae523a0e537f63a8b68c2d62b161", kill_on_drop: false }` [INFO] [stdout] 67d65b2c078779bc571d823aadf17dc7d923ae523a0e537f63a8b68c2d62b161 [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 93c005f1bc0de99e0e8cf0b42452d4020b48f5cd83364a27f1ff15083ba3fa29 [INFO] running `Command { std: "docker" "start" "-a" "93c005f1bc0de99e0e8cf0b42452d4020b48f5cd83364a27f1ff15083ba3fa29", kill_on_drop: false }` [INFO] [stderr] Checking greeting v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::env::var` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::env::var; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::f64::consts::PI` [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::f64::consts::PI; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::u128::MAX` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::u128::MAX; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::fs::read_to_string` [INFO] [stdout] --> src/main.rs:296:5 [INFO] [stdout] | [INFO] [stdout] 296 | use std::fs::read_to_string; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::env::var` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::env::var; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::f64::consts::PI` [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::f64::consts::PI; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::u128::MAX` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::u128::MAX; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::fs::read_to_string` [INFO] [stdout] --> src/main.rs:296:5 [INFO] [stdout] | [INFO] [stdout] 296 | use std::fs::read_to_string; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: `PokerSuit` doesn't implement `std::fmt::Display` [INFO] [stdout] --> src/main.rs:506:20 [INFO] [stdout] | [INFO] [stdout] 506 | println!("{}", club); [INFO] [stdout] | -- ^^^^ `PokerSuit` cannot be formatted with the default formatter [INFO] [stdout] | | [INFO] [stdout] | required by this formatting parameter [INFO] [stdout] | [INFO] [stdout] = help: the trait `std::fmt::Display` is not implemented for `PokerSuit` [INFO] [stdout] = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead [INFO] [stdout] = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: `PokerSuit` doesn't implement `std::fmt::Display` [INFO] [stdout] --> src/main.rs:506:20 [INFO] [stdout] | [INFO] [stdout] 506 | println!("{}", club); [INFO] [stdout] | -- ^^^^ `PokerSuit` cannot be formatted with the default formatter [INFO] [stdout] | | [INFO] [stdout] | required by this formatting parameter [INFO] [stdout] | [INFO] [stdout] = help: the trait `std::fmt::Display` is not implemented for `PokerSuit` [INFO] [stdout] = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead [INFO] [stdout] = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s3` [INFO] [stdout] --> src/main.rs:74:9 [INFO] [stdout] | [INFO] [stdout] 74 | let s3 = &s1[6..]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s3` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s5` [INFO] [stdout] --> src/main.rs:77:9 [INFO] [stdout] | [INFO] [stdout] 77 | let s5 = &s1[..]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s5` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s3` [INFO] [stdout] --> src/main.rs:74:9 [INFO] [stdout] | [INFO] [stdout] 74 | let s3 = &s1[6..]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s3` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s5` [INFO] [stdout] --> src/main.rs:77:9 [INFO] [stdout] | [INFO] [stdout] 77 | let s5 = &s1[..]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s5` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `book` [INFO] [stdout] --> src/main.rs:222:13 [INFO] [stdout] | [INFO] [stdout] 222 | let book = NewBook::Papery {index: 103}; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_book` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `opt` [INFO] [stdout] --> src/main.rs:247:9 [INFO] [stdout] | [INFO] [stdout] 247 | let opt = Option::Some("hello"); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_opt` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/main.rs:258:9 [INFO] [stdout] | [INFO] [stdout] 258 | let t = Some(64); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `book` [INFO] [stdout] --> src/main.rs:222:13 [INFO] [stdout] | [INFO] [stdout] 222 | let book = NewBook::Papery {index: 103}; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_book` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `index` [INFO] [stdout] --> src/main.rs:285:25 [INFO] [stdout] | [INFO] [stdout] 285 | if let Book::Papery(index) = my_book { // 属性为 tuple 类型的，需要临时指定一个名称 [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `opt` [INFO] [stdout] --> src/main.rs:247:9 [INFO] [stdout] | [INFO] [stdout] 247 | let opt = Option::Some("hello"); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_opt` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/main.rs:258:9 [INFO] [stdout] | [INFO] [stdout] 258 | let t = Some(64); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `index` [INFO] [stdout] --> src/main.rs:285:25 [INFO] [stdout] | [INFO] [stdout] 285 | if let Book::Papery(index) = my_book { // 属性为 tuple 类型的，需要临时指定一个名称 [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:326:9 [INFO] [stdout] | [INFO] [stdout] 326 | let x: isize = 10086; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/main.rs:327:9 [INFO] [stdout] | [INFO] [stdout] 327 | let a = 10.33; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:326:9 [INFO] [stdout] | [INFO] [stdout] 326 | let x: isize = 10086; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/main.rs:327:9 [INFO] [stdout] | [INFO] [stdout] 327 | let a = 10.33; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s2` [INFO] [stdout] --> src/main.rs:383:9 [INFO] [stdout] | [INFO] [stdout] 383 | let s2 = &s1; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s3` [INFO] [stdout] --> src/main.rs:384:9 [INFO] [stdout] | [INFO] [stdout] 384 | let s3 = &s1; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s4` [INFO] [stdout] --> src/main.rs:387:9 [INFO] [stdout] | [INFO] [stdout] 387 | let s4 = &mut s1; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s4` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s1` [INFO] [stdout] --> src/main.rs:396:9 [INFO] [stdout] | [INFO] [stdout] 396 | let s1 = first_char(&s); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s2` [INFO] [stdout] --> src/main.rs:383:9 [INFO] [stdout] | [INFO] [stdout] 383 | let s2 = &s1; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s3` [INFO] [stdout] --> src/main.rs:384:9 [INFO] [stdout] | [INFO] [stdout] 384 | let s3 = &s1; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s4` [INFO] [stdout] --> src/main.rs:387:9 [INFO] [stdout] | [INFO] [stdout] 387 | let s4 = &mut s1; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s4` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s1` [INFO] [stdout] --> src/main.rs:396:9 [INFO] [stdout] | [INFO] [stdout] 396 | let s1 = first_char(&s); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stderr] error: could not compile `greeting` (bin "greeting" test) due to 1 previous error; 16 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `greeting` (bin "greeting") due to 1 previous error; 16 warnings emitted [INFO] running `Command { std: "docker" "inspect" "93c005f1bc0de99e0e8cf0b42452d4020b48f5cd83364a27f1ff15083ba3fa29", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "93c005f1bc0de99e0e8cf0b42452d4020b48f5cd83364a27f1ff15083ba3fa29", kill_on_drop: false }` [INFO] [stdout] 93c005f1bc0de99e0e8cf0b42452d4020b48f5cd83364a27f1ff15083ba3fa29