[INFO] cloning repository https://github.com/jeraldgan/rust-primer [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jeraldgan/rust-primer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeraldgan%2Frust-primer", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeraldgan%2Frust-primer'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8722a96df067afa7439b1de35ff57b32ad9c3f66 [INFO] checking jeraldgan/rust-primer against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeraldgan%2Frust-primer" "/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/jeraldgan/rust-primer on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jeraldgan/rust-primer [INFO] finished tweaking git repo https://github.com/jeraldgan/rust-primer [INFO] tweaked toml for git repo https://github.com/jeraldgan/rust-primer written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/jeraldgan/rust-primer 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Locking 2 packages [INFO] [stderr] Adding demo-stuff v0.1.0 (/workspace/builds/worker-4-tc1/source/01-hello/demo) [INFO] [stderr] Adding exercise-hello v0.1.0 (/workspace/builds/worker-4-tc1/source/01-hello/exercise) [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded heck v0.3.2 [INFO] [stderr] Downloaded indexmap v1.6.2 [INFO] [stderr] Downloaded libc v0.2.91 [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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 91cce3b6237053f13dea2934cf4f476ba30927027132b20d16fbd8fb14ccc360 [INFO] running `Command { std: "docker" "start" "-a" "91cce3b6237053f13dea2934cf4f476ba30927027132b20d16fbd8fb14ccc360", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "91cce3b6237053f13dea2934cf4f476ba30927027132b20d16fbd8fb14ccc360", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "91cce3b6237053f13dea2934cf4f476ba30927027132b20d16fbd8fb14ccc360", kill_on_drop: false }` [INFO] [stdout] 91cce3b6237053f13dea2934cf4f476ba30927027132b20d16fbd8fb14ccc360 [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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f89fdaf658804926375688c87c2f6b92e70060d9fb054b577c591975d6017a8e [INFO] running `Command { std: "docker" "start" "-a" "f89fdaf658804926375688c87c2f6b92e70060d9fb054b577c591975d6017a8e", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.65 [INFO] [stderr] Compiling libc v0.2.91 [INFO] [stderr] Compiling serde_derive v1.0.125 [INFO] [stderr] Compiling serde v1.0.125 [INFO] [stderr] Compiling indexmap v1.6.2 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling heck v0.3.2 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Checking exercise-hello v0.1.0 (/opt/rustwide/workdir/01-hello/exercise) [INFO] [stderr] Checking solution-generics v0.1.0 (/opt/rustwide/workdir/04-generics-traits/solution) [INFO] [stderr] Checking exercise-match v0.1.0 (/opt/rustwide/workdir/05-match-result/exercise) [INFO] [stderr] Checking demo-structs v0.1.0 (/opt/rustwide/workdir/03-structs-lifetimes/demo) [INFO] [stderr] Checking solution2 v0.1.0 (/opt/rustwide/workdir/02-basics/solution) [INFO] [stderr] Checking solution v0.1.0 (/opt/rustwide/workdir/01-hello/solution) [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> 04-generics-traits/solution/src/main.rs:4:9 [INFO] [stdout] | [INFO] [stdout] 4 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module [INFO] [stdout] --> 04-generics-traits/solution/src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | mod tests { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking demo-stuff v0.1.0 (/opt/rustwide/workdir/01-hello/demo) [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> 04-generics-traits/solution/src/main.rs:21:10 [INFO] [stdout] | [INFO] [stdout] 21 | }; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> 04-generics-traits/solution/src/main.rs:39:10 [INFO] [stdout] | [INFO] [stdout] 39 | }; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking structs-exercise v0.1.0 (/opt/rustwide/workdir/02-basics/exercise) [INFO] [stderr] Checking demo-strings v0.1.0 (/opt/rustwide/workdir/06-strings/demo) [INFO] [stdout] warning: value assigned to `x` is never read [INFO] [stdout] --> 02-basics/solution/src/main.rs:4:13 [INFO] [stdout] | [INFO] [stdout] 4 | let mut x = 1; [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: function `mutability` is never used [INFO] [stdout] --> 02-basics/solution/src/main.rs:3:4 [INFO] [stdout] | [INFO] [stdout] 3 | fn mutability() -> u8 { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `casting` is never used [INFO] [stdout] --> 02-basics/solution/src/main.rs:14:4 [INFO] [stdout] | [INFO] [stdout] 14 | fn casting() -> f64 { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `collections` is never used [INFO] [stdout] --> 02-basics/solution/src/main.rs:24:4 [INFO] [stdout] | [INFO] [stdout] 24 | fn collections() -> u8 { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> 03-structs-lifetimes/demo/src/main.rs:18:8 [INFO] [stdout] | [INFO] [stdout] 10 | impl Rectangle { [INFO] [stdout] | -------------- associated function in this implementation [INFO] [stdout] ... [INFO] [stdout] 18 | fn new(width: u32, height: u32) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `double_area_rect_reference` is never used [INFO] [stdout] --> 03-structs-lifetimes/demo/src/main.rs:73:4 [INFO] [stdout] | [INFO] [stdout] 73 | fn double_area_rect_reference(rect: &Rectangle) -> u32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking exercise-structs v0.1.0 (/opt/rustwide/workdir/03-structs-lifetimes/exercise) [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `foo` is never read [INFO] [stdout] --> 04-generics-traits/solution/src/main.rs:10:13 [INFO] [stdout] | [INFO] [stdout] 9 | struct ShouldBeDebuggable { [INFO] [stdout] | ------------------ field in this struct [INFO] [stdout] 10 | foo: String, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `ShouldBeDebuggable` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking solution-structs v0.1.0 (/opt/rustwide/workdir/03-structs-lifetimes/solution) [INFO] [stderr] Checking exercise-libraries v0.1.0 (/opt/rustwide/workdir/07-external-libraries/exercise) [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> 05-match-result/exercise/src/main.rs:20:42 [INFO] [stdout] | [INFO] [stdout] 20 | assert_eq!(parse_value("bunny"), Some(Sculpture::Bunny)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ expected `Sculpture`, found `Option` [INFO] [stdout] | [INFO] [stdout] = note: expected enum `Sculpture` [INFO] [stdout] found enum `Option` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> 05-match-result/exercise/src/main.rs:21:43 [INFO] [stdout] | [INFO] [stdout] 21 | assert_eq!(parse_value("teapot"), Some(Sculpture::Teapot)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ expected `Sculpture`, found `Option` [INFO] [stdout] | [INFO] [stdout] = note: expected enum `Sculpture` [INFO] [stdout] found enum `Option` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> 05-match-result/exercise/src/main.rs:22:41 [INFO] [stdout] | [INFO] [stdout] 22 | assert_eq!(parse_value("taco"), None); [INFO] [stdout] | ^^^^ expected `Sculpture`, found `Option<_>` [INFO] [stdout] | [INFO] [stdout] = note: expected enum `Sculpture` [INFO] [stdout] found enum `Option<_>` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> 05-match-result/exercise/src/main.rs:29:27 [INFO] [stdout] | [INFO] [stdout] 29 | assert_eq!(value, "value"); [INFO] [stdout] | ^^^^^^^ expected `Option<&str>`, found `&str` [INFO] [stdout] | [INFO] [stdout] = note: expected enum `Option<&str>` [INFO] [stdout] found reference `&str` [INFO] [stdout] help: try wrapping the expression in `Some` [INFO] [stdout] | [INFO] [stdout] 29 | assert_eq!(value, Some("value")); [INFO] [stdout] | +++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `input` [INFO] [stdout] --> 05-match-result/exercise/src/main.rs:11:16 [INFO] [stdout] | [INFO] [stdout] 11 | fn parse_value(input: &str) -> Sculpture { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_input` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stderr] Checking demo-match v0.1.0 (/opt/rustwide/workdir/05-match-result/demo) [INFO] [stdout] warning: unused variable: `s2` [INFO] [stdout] --> 06-strings/demo/src/main.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let s2: String = String::from_str(s).unwrap(); // s could be invalid bytes for a String [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s2` [INFO] [stdout] --> 06-strings/demo/src/main.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let s2: String = s.to_owned(); [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] --> 06-strings/demo/src/main.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let s3: &str = s2.as_str(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s3` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking demo-generics v0.1.0 (/opt/rustwide/workdir/04-generics-traits/demo) [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> 03-structs-lifetimes/exercise/src/shapes/circle.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> 03-structs-lifetimes/exercise/src/shapes/rectangle.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> 03-structs-lifetimes/exercise/src/main.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module [INFO] [stdout] --> 03-structs-lifetimes/exercise/src/main.rs:16:1 [INFO] [stdout] | [INFO] [stdout] 16 | mod tests { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `exercise-match` (bin "exercise-match" test) due to 5 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: expected one of `!` or `::`, found `:` [INFO] [stdout] --> 07-external-libraries/exercise/src/main.rs:21:6 [INFO] [stdout] | [INFO] [stdout] 21 | https://docs.serde.rs/serde_json/#parsing-json-as-strongly-typed-data-structures [INFO] [stdout] | ^ expected one of `!` or `::` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0609]: no field `height` on type `&Rectangle` [INFO] [stdout] --> 03-structs-lifetimes/exercise/src/shapes/rectangle.rs:7:27 [INFO] [stdout] | [INFO] [stdout] 7 | self.width * self.height [INFO] [stdout] | ^^^^^^ unknown field [INFO] [stdout] | [INFO] [stdout] = note: available field is: `width` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0560]: struct `Rectangle` has no field named `height` [INFO] [stdout] --> 03-structs-lifetimes/exercise/src/main.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | height: 3.0f64, [INFO] [stdout] | ^^^^^^ `Rectangle` does not have this field [INFO] [stdout] | [INFO] [stdout] = note: all struct fields are already assigned [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0624]: method `area` is private [INFO] [stdout] --> 03-structs-lifetimes/exercise/src/main.rs:10:56 [INFO] [stdout] | [INFO] [stdout] 10 | println!("Area of a 2 x 3 rectangle is {:?}", rect.area()); [INFO] [stdout] | ^^^^ private method [INFO] [stdout] | [INFO] [stdout] ::: 03-structs-lifetimes/exercise/src/shapes/rectangle.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | fn area(&self) -> f64 { [INFO] [stdout] | --------------------- private method defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0560]: struct `Circle` has no field named `radius` [INFO] [stdout] --> 03-structs-lifetimes/exercise/src/main.rs:12:25 [INFO] [stdout] | [INFO] [stdout] 12 | let circ = Circle { radius: 1.0f64 }; [INFO] [stdout] | ^^^^^^ `Circle` does not have this field [INFO] [stdout] | [INFO] [stdout] = note: all struct fields are already assigned [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> 02-basics/exercise/src/main.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let x: u8 = 1; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `xs` [INFO] [stdout] --> 02-basics/exercise/src/main.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 28 | let xs = [1, 2, 3, 4, 5]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_xs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `exercise-libraries` (bin "exercise-libraries" test) due to 2 previous errors [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `area` found for struct `Circle` in the current scope [INFO] [stdout] --> 03-structs-lifetimes/exercise/src/main.rs:13:52 [INFO] [stdout] | [INFO] [stdout] 13 | println!("Area of a unit circle is {:?}", circ.area()); [INFO] [stdout] | ^^^^ method not found in `Circle` [INFO] [stdout] | [INFO] [stdout] ::: 03-structs-lifetimes/exercise/src/shapes/circle.rs:5:1 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct Circle {} [INFO] [stdout] | ----------------- method `area` not found for this struct [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 5 previous errors; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0560, E0599, E0609, E0624. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0560`. [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::process` [INFO] [stdout] --> 05-match-result/demo/src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::process; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> 05-match-result/demo/src/main.rs:7:6 [INFO] [stdout] | [INFO] [stdout] 7 | }; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `exercise-structs` (bin "exercise-structs") due to 6 previous errors; 3 warnings emitted [INFO] [stdout] warning: irrefutable `if let` pattern [INFO] [stdout] --> 05-match-result/demo/src/main.rs:104:8 [INFO] [stdout] | [INFO] [stdout] 104 | if let x = Some(wrapper) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this pattern will always match, so the `if let` is useless [INFO] [stdout] = help: consider replacing the `if let` with a `let` [INFO] [stdout] = note: `#[warn(irrefutable_let_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "f89fdaf658804926375688c87c2f6b92e70060d9fb054b577c591975d6017a8e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f89fdaf658804926375688c87c2f6b92e70060d9fb054b577c591975d6017a8e", kill_on_drop: false }` [INFO] [stdout] f89fdaf658804926375688c87c2f6b92e70060d9fb054b577c591975d6017a8e [INFO] checking jeraldgan/rust-primer against try#36dbcaee1a55543dfc181be52a69d99ff46ff62f for pr-122960-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeraldgan%2Frust-primer" "/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/jeraldgan/rust-primer on toolchain 36dbcaee1a55543dfc181be52a69d99ff46ff62f [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jeraldgan/rust-primer [INFO] finished tweaking git repo https://github.com/jeraldgan/rust-primer [INFO] tweaked toml for git repo https://github.com/jeraldgan/rust-primer written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/jeraldgan/rust-primer 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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d40efd3da43e329bb540a79a1fe6370c7915de6d52a6576147b2f9e4a450880f [INFO] running `Command { std: "docker" "start" "-a" "d40efd3da43e329bb540a79a1fe6370c7915de6d52a6576147b2f9e4a450880f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d40efd3da43e329bb540a79a1fe6370c7915de6d52a6576147b2f9e4a450880f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d40efd3da43e329bb540a79a1fe6370c7915de6d52a6576147b2f9e4a450880f", kill_on_drop: false }` [INFO] [stdout] d40efd3da43e329bb540a79a1fe6370c7915de6d52a6576147b2f9e4a450880f [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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 849c31b4106a777f76ec99f9723d836288bc3d05cc25eb7456276c1bd8bfb576 [INFO] running `Command { std: "docker" "start" "-a" "849c31b4106a777f76ec99f9723d836288bc3d05cc25eb7456276c1bd8bfb576", kill_on_drop: false }` [INFO] [stderr] Copying to /tmp/fixit [INFO] [stderr] no edition found in manifest, probably 2015, skipping [INFO] running `Command { std: "docker" "inspect" "849c31b4106a777f76ec99f9723d836288bc3d05cc25eb7456276c1bd8bfb576", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "849c31b4106a777f76ec99f9723d836288bc3d05cc25eb7456276c1bd8bfb576", kill_on_drop: false }` [INFO] [stdout] 849c31b4106a777f76ec99f9723d836288bc3d05cc25eb7456276c1bd8bfb576