[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#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeraldgan%2Frust-primer" "/workspace/builds/worker-10/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jeraldgan/rust-primer on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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-10/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: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] error: the lock file /workspace/builds/worker-10/source/Cargo.lock needs to be updated but --locked was passed to prevent this [INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag. [INFO] the lockfile is outdated, regenerating it [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f3edfdf03ddddc5ed26187b52776fe8470de4606977243e0b44aa1c193472f63 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "f3edfdf03ddddc5ed26187b52776fe8470de4606977243e0b44aa1c193472f63", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f3edfdf03ddddc5ed26187b52776fe8470de4606977243e0b44aa1c193472f63", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f3edfdf03ddddc5ed26187b52776fe8470de4606977243e0b44aa1c193472f63", kill_on_drop: false }` [INFO] [stdout] f3edfdf03ddddc5ed26187b52776fe8470de4606977243e0b44aa1c193472f63 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 282c33caa9b7f4707242616955568bb06167fd4bc11de29367dab89e42806f6a [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "282c33caa9b7f4707242616955568bb06167fd4bc11de29367dab89e42806f6a", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.26 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling version_check v0.9.3 [INFO] [stderr] Compiling syn v1.0.72 [INFO] [stderr] Compiling serde_derive v1.0.125 [INFO] [stderr] Compiling unicode-segmentation v1.7.1 [INFO] [stderr] Compiling serde v1.0.125 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Checking os_str_bytes v2.4.0 [INFO] [stderr] Checking strsim v0.10.0 [INFO] [stderr] Checking exercise-generics v0.1.0 (/opt/rustwide/workdir/04-generics-traits/exercise) [INFO] [stderr] Checking solution v0.1.0 (/opt/rustwide/workdir/01-hello/solution) [INFO] [stderr] Checking demo v0.1.0 (/opt/rustwide/workdir/02-basics/demo) [INFO] [stderr] Checking demo-generics v0.1.0 (/opt/rustwide/workdir/04-generics-traits/demo) [INFO] [stdout] error: expected identifier, found `?` [INFO] [stdout] --> 04-generics-traits/exercise/src/main.rs:24:37 [INFO] [stdout] | [INFO] [stdout] 24 | let mut map: HashMap<&str, ???> = HashMap::new(); [INFO] [stdout] | -------- ^ expected identifier [INFO] [stdout] | | | [INFO] [stdout] | | help: use `=` if you meant to assign [INFO] [stdout] | while parsing the type for `mut map` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: expected one of `!`, `.`, `::`, `;`, `?`, `{`, or an operator, found `,` [INFO] [stdout] --> 04-generics-traits/exercise/src/main.rs:24:34 [INFO] [stdout] | [INFO] [stdout] 24 | let mut map: HashMap<&str, ???> = HashMap::new(); [INFO] [stdout] | ^ expected one of 7 possible tokens [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> 04-generics-traits/exercise/src/main.rs:4:9 [INFO] [stdout] | [INFO] [stdout] 4 | use std::collections::HashMap; [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] --> 04-generics-traits/exercise/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/exercise/src/main.rs:39:10 [INFO] [stdout] | [INFO] [stdout] 39 | }; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0046]: not all trait items implemented, missing: `get_weight` [INFO] [stdout] --> 04-generics-traits/exercise/src/main.rs:52:9 [INFO] [stdout] | [INFO] [stdout] 38 | fn get_weight(&self) -> i32; [INFO] [stdout] | ---------------------------- `get_weight` from trait [INFO] [stdout] ... [INFO] [stdout] 52 | impl HasWeight for Cow {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ missing `get_weight` in implementation [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0046]: not all trait items implemented, missing: `get_weight` [INFO] [stdout] --> 04-generics-traits/exercise/src/main.rs:54:9 [INFO] [stdout] | [INFO] [stdout] 38 | fn get_weight(&self) -> i32; [INFO] [stdout] | ---------------------------- `get_weight` from trait [INFO] [stdout] ... [INFO] [stdout] 54 | impl HasWeight for Cat {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ missing `get_weight` in implementation [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking structs-exercise v0.1.0 (/opt/rustwide/workdir/02-basics/exercise) [INFO] [stdout] error[E0061]: this function takes 0 arguments but 1 argument was supplied [INFO] [stdout] --> 04-generics-traits/exercise/src/main.rs:60:13 [INFO] [stdout] | [INFO] [stdout] 60 | get_weight(Cow { [INFO] [stdout] | _____________^^^^^^^^^^_- [INFO] [stdout] | | | [INFO] [stdout] | | expected 0 arguments [INFO] [stdout] 61 | | meat_weight: 1, [INFO] [stdout] 62 | | milk_weight: 5 [INFO] [stdout] 63 | | }), [INFO] [stdout] | |_____________- supplied 1 argument [INFO] [stdout] | [INFO] [stdout] note: function defined here [INFO] [stdout] --> 04-generics-traits/exercise/src/main.rs:57:12 [INFO] [stdout] | [INFO] [stdout] 57 | fn get_weight() -> i32 {} [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0061]: this function takes 0 arguments but 1 argument was supplied [INFO] [stdout] --> 04-generics-traits/exercise/src/main.rs:66:20 [INFO] [stdout] | [INFO] [stdout] 66 | assert_eq!(get_weight(Cat { furballs: 3 }), 3); [INFO] [stdout] | ^^^^^^^^^^ ------------------- supplied 1 argument [INFO] [stdout] | | [INFO] [stdout] | expected 0 arguments [INFO] [stdout] | [INFO] [stdout] note: function defined here [INFO] [stdout] --> 04-generics-traits/exercise/src/main.rs:57:12 [INFO] [stdout] | [INFO] [stdout] 57 | fn get_weight() -> i32 {} [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking exercise-libraries v0.1.0 (/opt/rustwide/workdir/07-external-libraries/exercise) [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> 04-generics-traits/exercise/src/main.rs:57:28 [INFO] [stdout] | [INFO] [stdout] 57 | fn get_weight() -> i32 {} [INFO] [stdout] | ---------- ^^^ expected `i32`, found `()` [INFO] [stdout] | | [INFO] [stdout] | implicitly returns `()` as its body has no tail or `return` expression [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 7 previous errors; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0046, E0061, E0308. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0046`. [INFO] [stdout] [INFO] [stderr] error: could not compile `exercise-generics` [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] 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 previous error [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: function is never used: `mutability` [INFO] [stdout] --> 02-basics/exercise/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 is never used: `casting` [INFO] [stdout] --> 02-basics/exercise/src/main.rs:15:4 [INFO] [stdout] | [INFO] [stdout] 15 | fn casting() -> f64 { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `collections` [INFO] [stdout] --> 02-basics/exercise/src/main.rs:27:4 [INFO] [stdout] | [INFO] [stdout] 27 | fn collections() -> u8 { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "282c33caa9b7f4707242616955568bb06167fd4bc11de29367dab89e42806f6a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "282c33caa9b7f4707242616955568bb06167fd4bc11de29367dab89e42806f6a", kill_on_drop: false }` [INFO] [stdout] 282c33caa9b7f4707242616955568bb06167fd4bc11de29367dab89e42806f6a