[INFO] cloning repository https://github.com/yjyao/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/yjyao/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyjyao%2Flearn-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyjyao%2Flearn-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 6501ca2c3bd746e47e697e1dbcb10b23d623ca60 [INFO] testing yjyao/learn-rust against master#ebf0cf75d368c035f4c7e7246d203bd469ee4a51 for pr-137940 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyjyao%2Flearn-rust" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/yjyao/learn-rust on toolchain ebf0cf75d368c035f4c7e7246d203bd469ee4a51 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/yjyao/learn-rust [INFO] finished tweaking git repo https://github.com/yjyao/learn-rust [INFO] tweaked toml for git repo https://github.com/yjyao/learn-rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/yjyao/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" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded assert_float_eq v1.1.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5d79e4ab966f243aa9891410ecd977c51e4dac557251f460f267170ec1f6f265 [INFO] running `Command { std: "docker" "start" "-a" "5d79e4ab966f243aa9891410ecd977c51e4dac557251f460f267170ec1f6f265", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5d79e4ab966f243aa9891410ecd977c51e4dac557251f460f267170ec1f6f265", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5d79e4ab966f243aa9891410ecd977c51e4dac557251f460f267170ec1f6f265", kill_on_drop: false }` [INFO] [stdout] 5d79e4ab966f243aa9891410ecd977c51e4dac557251f460f267170ec1f6f265 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 94debe1470d0a18ef3e1e90098a9aaa8940ad8acf9432db0027fa69e73071d57 [INFO] running `Command { std: "docker" "start" "-a" "94debe1470d0a18ef3e1e90098a9aaa8940ad8acf9432db0027fa69e73071d57", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.79 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Compiling anyhow v1.0.81 [INFO] [stderr] Compiling thiserror v1.0.58 [INFO] [stderr] Compiling assert_float_eq v1.1.3 [INFO] [stderr] Compiling quote v1.0.35 [INFO] [stderr] Compiling syn v2.0.52 [INFO] [stderr] Compiling thiserror-impl v1.0.58 [INFO] [stderr] Compiling learn-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/main.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/main.rs:890:26 [INFO] [stdout] | [INFO] [stdout] 890 | struct MetersSquared(i32); [INFO] [stdout] | ------------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `MetersSquared` 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: struct `Citation` is never constructed [INFO] [stdout] --> src/main.rs:1351:12 [INFO] [stdout] | [INFO] [stdout] 1351 | struct Citation { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `1` is never read [INFO] [stdout] --> src/main.rs:1906:20 [INFO] [stdout] | [INFO] [stdout] 1906 | Element(T, Box>), [INFO] [stdout] | ------- ^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 1906 - Element(T, Box>), [INFO] [stdout] 1906 + Element(T, ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `1` is never read [INFO] [stdout] --> src/main.rs:2219:23 [INFO] [stdout] | [INFO] [stdout] 2219 | struct Point(i32, i32); [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.13s [INFO] running `Command { std: "docker" "inspect" "94debe1470d0a18ef3e1e90098a9aaa8940ad8acf9432db0027fa69e73071d57", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "94debe1470d0a18ef3e1e90098a9aaa8940ad8acf9432db0027fa69e73071d57", kill_on_drop: false }` [INFO] [stdout] 94debe1470d0a18ef3e1e90098a9aaa8940ad8acf9432db0027fa69e73071d57 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8575972959e6f90aa798542f6d5be63c0aeac77338aec82a4424525ecf97a997 [INFO] running `Command { std: "docker" "start" "-a" "8575972959e6f90aa798542f6d5be63c0aeac77338aec82a4424525ecf97a997", kill_on_drop: false }` [INFO] [stderr] Compiling learn-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/main.rs:890:26 [INFO] [stdout] | [INFO] [stdout] 890 | struct MetersSquared(i32); [INFO] [stdout] | ------------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `MetersSquared` 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: struct `Citation` is never constructed [INFO] [stdout] --> src/main.rs:1351:12 [INFO] [stdout] | [INFO] [stdout] 1351 | struct Citation { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `1` is never read [INFO] [stdout] --> src/main.rs:1906:20 [INFO] [stdout] | [INFO] [stdout] 1906 | Element(T, Box>), [INFO] [stdout] | ------- ^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 1906 - Element(T, Box>), [INFO] [stdout] 1906 + Element(T, ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `1` is never read [INFO] [stdout] --> src/main.rs:2219:23 [INFO] [stdout] | [INFO] [stdout] 2219 | struct Point(i32, i32); [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 1.69s [INFO] running `Command { std: "docker" "inspect" "8575972959e6f90aa798542f6d5be63c0aeac77338aec82a4424525ecf97a997", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8575972959e6f90aa798542f6d5be63c0aeac77338aec82a4424525ecf97a997", kill_on_drop: false }` [INFO] [stdout] 8575972959e6f90aa798542f6d5be63c0aeac77338aec82a4424525ecf97a997 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] dfbf9e7cb5c079f65ab9cf58a2b71e8a64dc2ede13c813423f4599075666d3af [INFO] running `Command { std: "docker" "start" "-a" "dfbf9e7cb5c079f65ab9cf58a2b71e8a64dc2ede13c813423f4599075666d3af", kill_on_drop: false }` [INFO] [stderr] warning: field `0` is never read [INFO] [stderr] --> src/main.rs:890:26 [INFO] [stderr] | [INFO] [stderr] 890 | struct MetersSquared(i32); [INFO] [stderr] | ------------- ^^^ [INFO] [stderr] | | [INFO] [stderr] | field in this struct [INFO] [stderr] | [INFO] [stderr] = help: consider removing this field [INFO] [stderr] = note: `MetersSquared` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: struct `Citation` is never constructed [INFO] [stderr] --> src/main.rs:1351:12 [INFO] [stderr] | [INFO] [stderr] 1351 | struct Citation { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field `1` is never read [INFO] [stderr] --> src/main.rs:1906:20 [INFO] [stderr] | [INFO] [stderr] 1906 | Element(T, Box>), [INFO] [stderr] | ------- ^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | field in this variant [INFO] [stderr] | [INFO] [stderr] = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stderr] | [INFO] [stderr] 1906 - Element(T, Box>), [INFO] [stderr] 1906 + Element(T, ()), [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: field `1` is never read [INFO] [stderr] --> src/main.rs:2219:23 [INFO] [stderr] | [INFO] [stderr] 2219 | struct Point(i32, i32); [INFO] [stderr] | ----- ^^^ [INFO] [stderr] | | [INFO] [stderr] | field in this struct [INFO] [stderr] | [INFO] [stderr] = help: consider removing this field [INFO] [stderr] = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] [INFO] [stderr] warning: `learn-rust` (bin "learn-rust" test) generated 4 warnings [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/learn_rust-a5c1d4ddf649c29c) [INFO] [stdout] [INFO] [stdout] running 32 tests [INFO] [stdout] test exercise_binary_tree::has ... ok [INFO] [stdout] test exercise_binary_tree::len ... ok [INFO] [stdout] test exercise_collatz_length::test_collatz_length ... ok [INFO] [stdout] test exercise_elevator_events::test_elevator_events ... ok [INFO] [stdout] test exercise_counter::test_counter ... ok [INFO] [stdout] test exercise_expression_evaluation::test_error ... ok [INFO] [stdout] test exercise_expression_evaluation::test_sum ... ok [INFO] [stdout] test exercise_generic_min::test_min ... ok [INFO] [stdout] test exercise_expression_evaluation::test_value ... ok [INFO] [stdout] test exercise_expression_evaluation::test_recursion ... ok [INFO] [stdout] test exercise_fibonacci::test_fib ... ok [INFO] [stdout] test exercise_geometry::test_geometry ... ok [INFO] [stdout] test exercise_iterator_method_chaining::test_larger_offsets ... ok [INFO] [stdout] test exercise_iterator_method_chaining::test_offset_one ... ok [INFO] [stdout] test exercise_health_stats::test_visit ... ok [INFO] [stdout] test exercise_iterator_method_chaining::test_degenerate_cases ... ok [INFO] [stdout] test exercise_lhun_algorithm::test_double_over_10 ... ok [INFO] [stdout] test exercise_iterator_method_chaining::test_custom_type ... ok [INFO] [stdout] test exercise_lhun_algorithm::test_empty_number ... ok [INFO] [stdout] test exercise_binary_tree::unbalanced ... ok [INFO] [stdout] test exercise_builder::test_builder ... ok [INFO] [stdout] test exercise_lhun_algorithm::test_invalid_cc_number ... ok [INFO] [stdout] test exercise_lhun_algorithm::test_invalid_characters ... ok [INFO] [stdout] test exercise_lhun_algorithm::test_sum_over_10 ... ok [INFO] [stdout] test exercise_protobuf_parsing::test ... ok [INFO] [stdout] test exercise_generic_logger::test_verbosity_filter ... ok [INFO] [stdout] test exercise_result::test ... ok [INFO] [stdout] test exercise_lhun_algorithm::test_valid_cc_number ... ok [INFO] [stdout] test exercise_rot13::binary ... ok [INFO] [stdout] test exercise_rot13::joke ... ok [INFO] [stdout] test exercise_lhun_algorithm::test_too_short_cc_number ... ok [INFO] [stdout] test exercise_transpose::test_transpose ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 32 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "dfbf9e7cb5c079f65ab9cf58a2b71e8a64dc2ede13c813423f4599075666d3af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dfbf9e7cb5c079f65ab9cf58a2b71e8a64dc2ede13c813423f4599075666d3af", kill_on_drop: false }` [INFO] [stdout] dfbf9e7cb5c079f65ab9cf58a2b71e8a64dc2ede13c813423f4599075666d3af