[INFO] cloning repository https://github.com/pedro-stanaka/rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pedro-stanaka/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpedro-stanaka%2Frustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpedro-stanaka%2Frustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 3b3c6b469718014402765175cbf33b6400bc12e8 [INFO] testing pedro-stanaka/rustlings against 1.91.0 for beta-1.92-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpedro-stanaka%2Frustlings" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/pedro-stanaka/rustlings [INFO] finished tweaking git repo https://github.com/pedro-stanaka/rustlings [INFO] tweaked toml for git repo https://github.com/pedro-stanaka/rustlings written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/pedro-stanaka/rustlings on toolchain 1.91.0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 886d93217661b3c831336fccc3d2ca99a82e24b47f8472ee506bc4eff55dd432 [INFO] running `Command { std: "docker" "start" "-a" "886d93217661b3c831336fccc3d2ca99a82e24b47f8472ee506bc4eff55dd432", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "886d93217661b3c831336fccc3d2ca99a82e24b47f8472ee506bc4eff55dd432", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "886d93217661b3c831336fccc3d2ca99a82e24b47f8472ee506bc4eff55dd432", kill_on_drop: false }` [INFO] [stdout] 886d93217661b3c831336fccc3d2ca99a82e24b47f8472ee506bc4eff55dd432 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 609df0527c4b0f1af91ee0283ff09087fd7b9c9220e7c14c4749873966dcdbf4 [INFO] running `Command { std: "docker" "start" "-a" "609df0527c4b0f1af91ee0283ff09087fd7b9c9220e7c14c4749873966dcdbf4", kill_on_drop: false }` [INFO] [stderr] Compiling exercises v0.0.0 (/opt/rustwide/workdir) [INFO] [stderr] error: could not compile `exercises` (bin "using_as") due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error[E0277]: cannot divide `f64` by `usize` [INFO] [stdout] --> exercises/23_conversions/using_as.rs:8:11 [INFO] [stdout] | [INFO] [stdout] 8 | total / values.len() [INFO] [stdout] | ^ no implementation for `f64 / usize` [INFO] [stdout] | [INFO] [stdout] = help: the trait `Div` is not implemented for `f64` [INFO] [stdout] = help: the following other types implement trait `Div`: [INFO] [stdout] `&f64` implements `Div` [INFO] [stdout] `&f64` implements `Div` [INFO] [stdout] `f64` implements `Div<&f64>` [INFO] [stdout] `f64` implements `Div` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stdout] warning: struct `Order` is never constructed [INFO] [stdout] --> exercises/07_structs/structs2.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | struct Order { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `create_order_template` is never used [INFO] [stdout] --> exercises/07_structs/structs2.rs:12:4 [INFO] [stdout] | [INFO] [stdout] 12 | fn create_order_template() -> Order { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `trim_me` is never used [INFO] [stdout] --> solutions/09_strings/strings3.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn trim_me(input: &str) -> &str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `compose_me` is never used [INFO] [stdout] --> solutions/09_strings/strings3.rs:5:4 [INFO] [stdout] | [INFO] [stdout] 5 | fn compose_me(input: &str) -> String { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `replace_me` is never used [INFO] [stdout] --> solutions/09_strings/strings3.rs:12:4 [INFO] [stdout] | [INFO] [stdout] 12 | fn replace_me(input: &str) -> String { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fill_vec` is never used [INFO] [stdout] --> exercises/06_move_semantics/move_semantics3.rs:2:4 [INFO] [stdout] | [INFO] [stdout] 2 | fn fill_vec(mut vec: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `vec_loop` is never used [INFO] [stdout] --> solutions/05_vecs/vecs2.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn vec_loop(input: &[i32]) -> Vec { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `vec_map_example` is never used [INFO] [stdout] --> solutions/05_vecs/vecs2.rs:11:4 [INFO] [stdout] | [INFO] [stdout] 11 | fn vec_map_example(input: &[i32]) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `vec_map` is never used [INFO] [stdout] --> solutions/05_vecs/vecs2.rs:18:4 [INFO] [stdout] | [INFO] [stdout] 18 | fn vec_map(input: &[i32]) -> Vec { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0072]: recursive type `List` has infinite size [INFO] [stdout] --> exercises/19_smart_pointers/box1.rs:14:1 [INFO] [stdout] | [INFO] [stdout] 14 | enum List { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 15 | Cons(i32, List), [INFO] [stdout] | ---- recursive without indirection [INFO] [stdout] | [INFO] [stdout] help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to break the cycle [INFO] [stdout] | [INFO] [stdout] 15 | Cons(i32, Box), [INFO] [stdout] | ++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0391]: cycle detected when computing drop-check constraints for `List` [INFO] [stdout] --> exercises/19_smart_pointers/box1.rs:14:1 [INFO] [stdout] | [INFO] [stdout] 14 | enum List { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: ...which immediately requires computing drop-check constraints for `List` again [INFO] [stdout] = note: cycle used when computing dropck types for `List` [INFO] [stdout] = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0391]: cycle detected when computing when `List` needs drop [INFO] [stdout] --> exercises/19_smart_pointers/box1.rs:14:1 [INFO] [stdout] | [INFO] [stdout] 14 | enum List { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: ...which immediately requires computing when `List` needs drop again [INFO] [stdout] = note: cycle used when computing whether `List` needs drop [INFO] [stdout] = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0072, E0391. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0072`. [INFO] [stdout] [INFO] [stderr] error: could not compile `exercises` (bin "box1") due to 3 previous errors [INFO] running `Command { std: "docker" "inspect" "609df0527c4b0f1af91ee0283ff09087fd7b9c9220e7c14c4749873966dcdbf4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "609df0527c4b0f1af91ee0283ff09087fd7b9c9220e7c14c4749873966dcdbf4", kill_on_drop: false }` [INFO] [stdout] 609df0527c4b0f1af91ee0283ff09087fd7b9c9220e7c14c4749873966dcdbf4