[INFO] cloning repository https://github.com/petertasker/100-exercises-to-learn-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/petertasker/100-exercises-to-learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpetertasker%2F100-exercises-to-learn-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpetertasker%2F100-exercises-to-learn-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a4dfce99728e632914164a864396af73fae57514 [INFO] checking petertasker/100-exercises-to-learn-rust against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpetertasker%2F100-exercises-to-learn-rust" "/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/petertasker/100-exercises-to-learn-rust [INFO] finished tweaking git repo https://github.com/petertasker/100-exercises-to-learn-rust [INFO] tweaked toml for git repo https://github.com/petertasker/100-exercises-to-learn-rust written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/petertasker/100-exercises-to-learn-rust on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/petertasker/100-exercises-to-learn-rust 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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded topological-sort v0.2.2 [INFO] [stderr] Downloaded opener v0.7.1 [INFO] [stderr] Downloaded notify-debouncer-mini v0.4.1 [INFO] [stderr] Downloaded pulldown-cmark-to-cmark v15.0.1 [INFO] [stderr] Downloaded terminal_size v0.3.0 [INFO] [stderr] Downloaded clap_complete v4.5.12 [INFO] [stderr] Downloaded pest_generator v2.7.11 [INFO] [stderr] Downloaded ammonia v4.0.0 [INFO] [stderr] Downloaded pest_meta v2.7.11 [INFO] [stderr] Downloaded pulldown-cmark v0.10.3 [INFO] [stderr] Downloaded pulldown-cmark v0.11.0 [INFO] [stderr] Downloaded clap v4.5.13 [INFO] [stderr] Downloaded handlebars v5.1.2 [INFO] [stderr] Downloaded pest_derive v2.7.11 [INFO] [stderr] Downloaded filetime v0.2.23 [INFO] [stderr] Downloaded elasticlunr-rs v3.0.2 [INFO] [stderr] Downloaded pest v2.7.11 [INFO] [stderr] Downloaded clap_builder v4.5.13 [INFO] [stderr] Downloaded notify v6.1.1 [INFO] [stderr] Downloaded pulldown-cmark-escape v0.10.1 [INFO] [stderr] Downloaded mdbook v0.4.40 [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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 47c6ffe41ebb70dd2629475f54e6313bba7214e7e42cd2e76212d4aaa1cbd858 [INFO] running `Command { std: "docker" "start" "-a" "47c6ffe41ebb70dd2629475f54e6313bba7214e7e42cd2e76212d4aaa1cbd858", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "47c6ffe41ebb70dd2629475f54e6313bba7214e7e42cd2e76212d4aaa1cbd858", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "47c6ffe41ebb70dd2629475f54e6313bba7214e7e42cd2e76212d4aaa1cbd858", kill_on_drop: false }` [INFO] [stdout] 47c6ffe41ebb70dd2629475f54e6313bba7214e7e42cd2e76212d4aaa1cbd858 [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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] cd154614ee2ec40412a88c38f806ffee1ab65b6842fd341c92c1d2fb676eb7c5 [INFO] running `Command { std: "docker" "start" "-a" "cd154614ee2ec40412a88c38f806ffee1ab65b6842fd341c92c1d2fb676eb7c5", kill_on_drop: false }` [INFO] [stderr] Checking common v0.1.0 (/opt/rustwide/workdir/helpers/common) [INFO] [stderr] Checking bytes v1.7.1 [INFO] [stderr] Compiling libc v0.2.155 [INFO] [stderr] Compiling byteorder v1.5.0 [INFO] [stderr] Compiling serde v1.0.204 [INFO] [stderr] Compiling anyhow v1.0.86 [INFO] [stderr] Checking aho-corasick v1.1.3 [INFO] [stderr] Compiling syn v2.0.72 [INFO] [stderr] Checking mio v1.0.1 [INFO] [stderr] Compiling rustix v0.38.34 [INFO] [stderr] Compiling serde_json v1.0.122 [INFO] [stderr] Checking sha1 v0.10.6 [INFO] [stderr] Checking phf_shared v0.10.0 [INFO] [stderr] Checking phf_shared v0.11.2 [INFO] [stderr] Checking indexmap v2.3.0 [INFO] [stderr] Checking tracing v0.1.40 [INFO] [stderr] Compiling mime_guess v2.0.5 [INFO] [stderr] Checking inotify-sys v0.1.5 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Checking crossbeam-epoch v0.9.18 [INFO] [stderr] Checking crossbeam-channel v0.5.13 [INFO] [stderr] Checking inotify v0.9.6 [INFO] [stderr] Checking phf v0.11.2 [INFO] [stderr] Checking filetime v0.2.23 [INFO] [stderr] Checking mio v0.8.11 [INFO] [stderr] Compiling pulldown-cmark v0.10.3 [INFO] [stderr] Checking scoped-tls v1.0.1 [INFO] [stderr] Checking crossbeam-deque v0.8.5 [INFO] [stderr] Checking pulldown-cmark-escape v0.10.1 [INFO] [stderr] Compiling semver v1.0.23 [INFO] [stderr] Checking shlex v1.3.0 [INFO] [stderr] Checking topological-sort v0.2.2 [INFO] [stderr] Checking http v0.2.12 [INFO] [stderr] Checking http v1.1.0 [INFO] [stderr] Checking unicode-width v0.1.13 [INFO] [stderr] Compiling pulldown-cmark v0.11.0 [INFO] [stderr] Checking pulldown-cmark-escape v0.11.0 [INFO] [stderr] Checking notify v6.1.1 [INFO] [stderr] Checking outro_02 v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/12_outro) [INFO] [stderr] Checking outro_03 v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/14_outro) [INFO] [stderr] Checking getopts v0.2.21 [INFO] [stderr] Checking error_trait v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/09_error_trait) [INFO] [stderr] Checking validation v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/02_validation) [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> exercises/03_ticket_v1/02_validation/src/lib.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 21 | todo!(); [INFO] [stdout] | ------- any code following this expression is unreachable [INFO] [stdout] 22 | / Self { [INFO] [stdout] 23 | | title, [INFO] [stdout] 24 | | description, [INFO] [stdout] 25 | | status, [INFO] [stdout] 26 | | } [INFO] [stdout] | |_________^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `title` [INFO] [stdout] --> exercises/03_ticket_v1/02_validation/src/lib.rs:20:12 [INFO] [stdout] | [INFO] [stdout] 20 | fn new(title: String, description: String, status: String) -> Self { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_title` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `description` [INFO] [stdout] --> exercises/03_ticket_v1/02_validation/src/lib.rs:20:27 [INFO] [stdout] | [INFO] [stdout] 20 | fn new(title: String, description: String, status: String) -> Self { [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_description` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `status` [INFO] [stdout] --> exercises/03_ticket_v1/02_validation/src/lib.rs:20:48 [INFO] [stdout] | [INFO] [stdout] 20 | fn new(title: String, description: String, status: String) -> Self { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_status` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking thiserror_ v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/12_thiserror) [INFO] [stdout] error[E0432]: unresolved import `outro_03::SaturatingU16` [INFO] [stdout] --> exercises/04_traits/14_outro/tests/integration.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use outro_03::SaturatingU16; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ no `SaturatingU16` in the root [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0432`. [INFO] [stdout] [INFO] [stderr] error: could not compile `outro_03` (test "integration") due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error[E0277]: `TicketNewError` doesn't implement `std::fmt::Display` [INFO] [stdout] --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:101:34 [INFO] [stdout] | [INFO] [stdout] 101 | assert_eq!(format!("{}", ticket.unwrap_err()), "Title cannot be empty"); [INFO] [stdout] | -- ^^^^^^^^^^^^^^^^^^^ `TicketNewError` 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 `TicketNewError` [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::__export::format_args` which comes from the expansion of the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `TicketNewError: AmbiguousIfMoreThanOne` is not satisfied [INFO] [stdout] --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:104:22 [INFO] [stdout] | [INFO] [stdout] 104 | assert_impl_one!(TicketNewError: std::error::Error); [INFO] [stdout] | ^^^^^^^^^^^^^^ the trait `std::error::Error` is not implemented for `TicketNewError` [INFO] [stdout] | [INFO] [stdout] note: required for `TicketNewError` to implement `AmbiguousIfMoreThanOne` [INFO] [stdout] --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:104:5 [INFO] [stdout] | [INFO] [stdout] 104 | assert_impl_one!(TicketNewError: std::error::Error); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound introduced here [INFO] [stdout] = note: this error originates in the macro `assert_impl_one` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `title` [INFO] [stdout] --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:15:16 [INFO] [stdout] | [INFO] [stdout] 15 | fn easy_ticket(title: String, description: String, status: Status) -> Ticket { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_title` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `description` [INFO] [stdout] --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:15:31 [INFO] [stdout] | [INFO] [stdout] 15 | fn easy_ticket(title: String, description: String, status: Status) -> Ticket { [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_description` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `status` [INFO] [stdout] --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:15:52 [INFO] [stdout] | [INFO] [stdout] 15 | fn easy_ticket(title: String, description: String, status: Status) -> Ticket { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_status` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stderr] error: could not compile `error_trait` (lib test) due to 2 previous errors; 3 warnings emitted [INFO] [stdout] error[E0599]: `TicketNewError` doesn't implement `std::fmt::Display` [INFO] [stdout] --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:62:24 [INFO] [stdout] | [INFO] [stdout] 6 | enum TicketNewError { [INFO] [stdout] | ------------------- method `to_string` not found for this enum because it doesn't satisfy `TicketNewError: ToString` or `TicketNewError: std::fmt::Display` [INFO] [stdout] ... [INFO] [stdout] 62 | assert_eq!(err.to_string(), "Title cannot be empty"); [INFO] [stdout] | ^^^^^^^^^ method cannot be called on `TicketNewError` due to unsatisfied trait bounds [INFO] [stdout] | [INFO] [stdout] = note: the following trait bounds were not satisfied: [INFO] [stdout] `TicketNewError: std::fmt::Display` [INFO] [stdout] which is required by `TicketNewError: ToString` [INFO] [stdout] note: the trait `std::fmt::Display` must be implemented [INFO] [stdout] --> /rustc/8c32e313cccf7df531e2d49ffb8227bb92304aee/library/core/src/fmt/mod.rs:1006:1 [INFO] [stdout] = help: items from traits can only be used if the trait is implemented and in scope [INFO] [stdout] = note: the following trait defines an item `to_string`, perhaps you need to implement it: [INFO] [stdout] candidate #1: `ToString` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: `TicketNewError` doesn't implement `std::fmt::Display` [INFO] [stdout] --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:68:24 [INFO] [stdout] | [INFO] [stdout] 6 | enum TicketNewError { [INFO] [stdout] | ------------------- method `to_string` not found for this enum because it doesn't satisfy `TicketNewError: ToString` or `TicketNewError: std::fmt::Display` [INFO] [stdout] ... [INFO] [stdout] 68 | assert_eq!(err.to_string(), "Description cannot be empty"); [INFO] [stdout] | ^^^^^^^^^ method cannot be called on `TicketNewError` due to unsatisfied trait bounds [INFO] [stdout] | [INFO] [stdout] = note: the following trait bounds were not satisfied: [INFO] [stdout] `TicketNewError: std::fmt::Display` [INFO] [stdout] which is required by `TicketNewError: ToString` [INFO] [stdout] note: the trait `std::fmt::Display` must be implemented [INFO] [stdout] --> /rustc/8c32e313cccf7df531e2d49ffb8227bb92304aee/library/core/src/fmt/mod.rs:1006:1 [INFO] [stdout] = help: items from traits can only be used if the trait is implemented and in scope [INFO] [stdout] = note: the following trait defines an item `to_string`, perhaps you need to implement it: [INFO] [stdout] candidate #1: `ToString` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: `TicketNewError` doesn't implement `std::fmt::Display` [INFO] [stdout] --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:74:24 [INFO] [stdout] | [INFO] [stdout] 6 | enum TicketNewError { [INFO] [stdout] | ------------------- method `to_string` not found for this enum because it doesn't satisfy `TicketNewError: ToString` or `TicketNewError: std::fmt::Display` [INFO] [stdout] ... [INFO] [stdout] 74 | assert_eq!(err.to_string(), "Title cannot be longer than 50 bytes"); [INFO] [stdout] | ^^^^^^^^^ method cannot be called on `TicketNewError` due to unsatisfied trait bounds [INFO] [stdout] | [INFO] [stdout] = note: the following trait bounds were not satisfied: [INFO] [stdout] `TicketNewError: std::fmt::Display` [INFO] [stdout] which is required by `TicketNewError: ToString` [INFO] [stdout] note: the trait `std::fmt::Display` must be implemented [INFO] [stdout] --> /rustc/8c32e313cccf7df531e2d49ffb8227bb92304aee/library/core/src/fmt/mod.rs:1006:1 [INFO] [stdout] = help: items from traits can only be used if the trait is implemented and in scope [INFO] [stdout] = note: the following trait defines an item `to_string`, perhaps you need to implement it: [INFO] [stdout] candidate #1: `ToString` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: `TicketNewError` doesn't implement `std::fmt::Display` [INFO] [stdout] --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:81:17 [INFO] [stdout] | [INFO] [stdout] 6 | enum TicketNewError { [INFO] [stdout] | ------------------- method `to_string` not found for this enum because it doesn't satisfy `TicketNewError: ToString` or `TicketNewError: std::fmt::Display` [INFO] [stdout] ... [INFO] [stdout] 81 | err.to_string(), [INFO] [stdout] | ^^^^^^^^^ method cannot be called on `TicketNewError` due to unsatisfied trait bounds [INFO] [stdout] | [INFO] [stdout] = note: the following trait bounds were not satisfied: [INFO] [stdout] `TicketNewError: std::fmt::Display` [INFO] [stdout] which is required by `TicketNewError: ToString` [INFO] [stdout] note: the trait `std::fmt::Display` must be implemented [INFO] [stdout] --> /rustc/8c32e313cccf7df531e2d49ffb8227bb92304aee/library/core/src/fmt/mod.rs:1006:1 [INFO] [stdout] = help: items from traits can only be used if the trait is implemented and in scope [INFO] [stdout] = note: the following trait defines an item `to_string`, perhaps you need to implement it: [INFO] [stdout] candidate #1: `ToString` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0599`. [INFO] [stdout] [INFO] [stderr] error: could not compile `thiserror_` (lib test) due to 4 previous errors [INFO] running `Command { std: "docker" "inspect" "cd154614ee2ec40412a88c38f806ffee1ab65b6842fd341c92c1d2fb676eb7c5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cd154614ee2ec40412a88c38f806ffee1ab65b6842fd341c92c1d2fb676eb7c5", kill_on_drop: false }` [INFO] [stdout] cd154614ee2ec40412a88c38f806ffee1ab65b6842fd341c92c1d2fb676eb7c5