[INFO] cloning repository https://github.com/katsumata-ryo/introduction_to_rust_programming [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/katsumata-ryo/introduction_to_rust_programming" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkatsumata-ryo%2Fintroduction_to_rust_programming", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkatsumata-ryo%2Fintroduction_to_rust_programming'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 36b6b2b0fc4c8cd59aca7192b55f79e874f1a16e [INFO] checking katsumata-ryo/introduction_to_rust_programming against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkatsumata-ryo%2Fintroduction_to_rust_programming" "/workspace/builds/worker-11/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/katsumata-ryo/introduction_to_rust_programming on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/katsumata-ryo/introduction_to_rust_programming [INFO] finished tweaking git repo https://github.com/katsumata-ryo/introduction_to_rust_programming [INFO] tweaked toml for git repo https://github.com/katsumata-ryo/introduction_to_rust_programming written to /workspace/builds/worker-11/source/Cargo.toml [INFO] crate git repo https://github.com/katsumata-ryo/introduction_to_rust_programming already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9cc38a1455dd3aef4696b467f1721b38ac03fae77555553a3cfb4dac7e42bbcb [INFO] running `Command { std: "docker" "start" "-a" "9cc38a1455dd3aef4696b467f1721b38ac03fae77555553a3cfb4dac7e42bbcb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9cc38a1455dd3aef4696b467f1721b38ac03fae77555553a3cfb4dac7e42bbcb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9cc38a1455dd3aef4696b467f1721b38ac03fae77555553a3cfb4dac7e42bbcb", kill_on_drop: false }` [INFO] [stdout] 9cc38a1455dd3aef4696b467f1721b38ac03fae77555553a3cfb4dac7e42bbcb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 50a76df512ac6db18a51e193252eeac2dfc59a080f9643483382665f9e2ebb95 [INFO] running `Command { std: "docker" "start" "-a" "50a76df512ac6db18a51e193252eeac2dfc59a080f9643483382665f9e2ebb95", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.57 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling heck v0.3.2 [INFO] [stderr] Compiling clap_derive v3.0.0-beta.2 [INFO] [stderr] Checking clap v3.0.0-beta.2 [INFO] [stderr] Checking samplecli v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `answer` [INFO] [stdout] --> src/main.rs:83:13 [INFO] [stdout] | [INFO] [stdout] 83 | let answer = calc.eval(&line); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_answer` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `map_err` found for reference `&str` in the current scope [INFO] [stdout] --> src/bin/err_string.rs:19:50 [INFO] [stdout] | [INFO] [stdout] 19 | let num_str = std::fs::read_to_string((path).map_err(|e| e.to_string))?; [INFO] [stdout] | ^^^^^^^ method not found in `&str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: `?` couldn't convert the error to `String` [INFO] [stdout] --> src/bin/err_string.rs:19:75 [INFO] [stdout] | [INFO] [stdout] 17 | fn get_int_from_file() -> Result { [INFO] [stdout] | ------------------- expected `String` because of this [INFO] [stdout] 18 | let path = "number.txt"; [INFO] [stdout] 19 | let num_str = std::fs::read_to_string((path).map_err(|e| e.to_string))?; [INFO] [stdout] | ^ the trait `From` is not implemented for `String` [INFO] [stdout] | [INFO] [stdout] = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait [INFO] [stdout] = help: the following implementations were found: [INFO] [stdout] > [INFO] [stdout] > [INFO] [stdout] > [INFO] [stdout] >> [INFO] [stdout] and 2 others [INFO] [stdout] = note: required because of the requirements on the impl of `FromResidual>` for `Result` [INFO] [stdout] = note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/bin/err_string.rs:32:13 [INFO] [stdout] | [INFO] [stdout] 31 | Err(e) => match e { [INFO] [stdout] | - this expression has type `String` [INFO] [stdout] 32 | MyError::Io(cause) => println!("I/O Error: {}", cause), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ expected struct `String`, found enum `MyError` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/bin/err_string.rs:33:13 [INFO] [stdout] | [INFO] [stdout] 31 | Err(e) => match e { [INFO] [stdout] | - this expression has type `String` [INFO] [stdout] 32 | MyError::Io(cause) => println!("I/O Error: {}", cause), [INFO] [stdout] 33 | MyError::Num(cause) => println!("Parse Error: {}", cause), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ expected struct `String`, found enum `MyError` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 4 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0277, E0308, E0599. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stderr] error: could not compile `samplecli` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `answer` [INFO] [stdout] --> src/main.rs:83:13 [INFO] [stdout] | [INFO] [stdout] 83 | let answer = calc.eval(&line); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_answer` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `map_err` found for reference `&str` in the current scope [INFO] [stdout] --> src/bin/err_string.rs:19:50 [INFO] [stdout] | [INFO] [stdout] 19 | let num_str = std::fs::read_to_string((path).map_err(|e| e.to_string))?; [INFO] [stdout] | ^^^^^^^ method not found in `&str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: `?` couldn't convert the error to `String` [INFO] [stdout] --> src/bin/err_string.rs:19:75 [INFO] [stdout] | [INFO] [stdout] 17 | fn get_int_from_file() -> Result { [INFO] [stdout] | ------------------- expected `String` because of this [INFO] [stdout] 18 | let path = "number.txt"; [INFO] [stdout] 19 | let num_str = std::fs::read_to_string((path).map_err(|e| e.to_string))?; [INFO] [stdout] | ^ the trait `From` is not implemented for `String` [INFO] [stdout] | [INFO] [stdout] = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait [INFO] [stdout] = help: the following implementations were found: [INFO] [stdout] > [INFO] [stdout] > [INFO] [stdout] > [INFO] [stdout] >> [INFO] [stdout] and 2 others [INFO] [stdout] = note: required because of the requirements on the impl of `FromResidual>` for `Result` [INFO] [stdout] = note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/bin/err_string.rs:32:13 [INFO] [stdout] | [INFO] [stdout] 31 | Err(e) => match e { [INFO] [stdout] | - this expression has type `String` [INFO] [stdout] 32 | MyError::Io(cause) => println!("I/O Error: {}", cause), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ expected struct `String`, found enum `MyError` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/bin/err_string.rs:33:13 [INFO] [stdout] | [INFO] [stdout] 31 | Err(e) => match e { [INFO] [stdout] | - this expression has type `String` [INFO] [stdout] 32 | MyError::Io(cause) => println!("I/O Error: {}", cause), [INFO] [stdout] 33 | MyError::Num(cause) => println!("Parse Error: {}", cause), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ expected struct `String`, found enum `MyError` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 4 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0277, E0308, E0599. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "50a76df512ac6db18a51e193252eeac2dfc59a080f9643483382665f9e2ebb95", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "50a76df512ac6db18a51e193252eeac2dfc59a080f9643483382665f9e2ebb95", kill_on_drop: false }` [INFO] [stdout] 50a76df512ac6db18a51e193252eeac2dfc59a080f9643483382665f9e2ebb95