[INFO] fetching crate my_rust_learn_20250812 3.2010.20772025192168... [INFO] testing my_rust_learn_20250812-3.2010.20772025192168 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate my_rust_learn_20250812 3.2010.20772025192168 into /workspace/builds/worker-1-tc2/source [INFO] started tweaking crates.io crate my_rust_learn_20250812 3.2010.20772025192168 [INFO] removed 0 missing tests [INFO] finished tweaking crates.io crate my_rust_learn_20250812 3.2010.20772025192168 [INFO] tweaked toml for crates.io crate my_rust_learn_20250812 3.2010.20772025192168 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate my_rust_learn_20250812 3.2010.20772025192168 on toolchain beta-2025-09-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate my_rust_learn_20250812 3.2010.20772025192168 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] cf10b6d224d9af62b6adb0c8264681113b2bfa7347d47b2e66b1a7d78c54ed65 [INFO] running `Command { std: "docker" "start" "-a" "cf10b6d224d9af62b6adb0c8264681113b2bfa7347d47b2e66b1a7d78c54ed65", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "cf10b6d224d9af62b6adb0c8264681113b2bfa7347d47b2e66b1a7d78c54ed65", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cf10b6d224d9af62b6adb0c8264681113b2bfa7347d47b2e66b1a7d78c54ed65", kill_on_drop: false }` [INFO] [stdout] cf10b6d224d9af62b6adb0c8264681113b2bfa7347d47b2e66b1a7d78c54ed65 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] df9608e155f8a111270d334b4373b9593cd3392763c676695937b5b1df40b0d4 [INFO] running `Command { std: "docker" "start" "-a" "df9608e155f8a111270d334b4373b9593cd3392763c676695937b5b1df40b0d4", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.174 [INFO] [stderr] Compiling memchr v2.7.5 [INFO] [stderr] Compiling smawk v0.3.2 [INFO] [stderr] Compiling unicode-linebreak v0.1.5 [INFO] [stderr] Compiling textwrap v0.16.2 [INFO] [stderr] Compiling aho-corasick v1.1.3 [INFO] [stderr] Compiling getrandom v0.2.16 [INFO] [stderr] Compiling rand_core v0.6.4 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand v0.8.5 [INFO] [stderr] Compiling regex-automata v0.4.9 [INFO] [stderr] Compiling regex v1.11.1 [INFO] [stderr] Compiling ferris-says v0.3.2 [INFO] [stderr] Compiling my_rust_learn_20250812 v3.2010.20772025192168 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `c1` [INFO] [stdout] --> src/lib.rs:36:16 [INFO] [stdout] | [INFO] [stdout] 36 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_c1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c2` [INFO] [stdout] --> src/lib.rs:36:34 [INFO] [stdout] | [INFO] [stdout] 36 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_c2` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.68s [INFO] running `Command { std: "docker" "inspect" "df9608e155f8a111270d334b4373b9593cd3392763c676695937b5b1df40b0d4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "df9608e155f8a111270d334b4373b9593cd3392763c676695937b5b1df40b0d4", kill_on_drop: false }` [INFO] [stdout] df9608e155f8a111270d334b4373b9593cd3392763c676695937b5b1df40b0d4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 97da01daab306b50e24455fc2f36b2e853a87dc0984da224ba49c97155ef280c [INFO] running `Command { std: "docker" "start" "-a" "97da01daab306b50e24455fc2f36b2e853a87dc0984da224ba49c97155ef280c", kill_on_drop: false }` [INFO] [stderr] Compiling my_rust_learn_20250812 v3.2010.20772025192168 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `c1` [INFO] [stdout] --> src/lib.rs:36:16 [INFO] [stdout] | [INFO] [stdout] 36 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_c1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c2` [INFO] [stdout] --> src/lib.rs:36:34 [INFO] [stdout] | [INFO] [stdout] 36 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_c2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c1` [INFO] [stdout] --> src/lib.rs:36:16 [INFO] [stdout] | [INFO] [stdout] 36 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_c1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c2` [INFO] [stdout] --> src/lib.rs:36:34 [INFO] [stdout] | [INFO] [stdout] 36 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_c2` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.71s [INFO] running `Command { std: "docker" "inspect" "97da01daab306b50e24455fc2f36b2e853a87dc0984da224ba49c97155ef280c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "97da01daab306b50e24455fc2f36b2e853a87dc0984da224ba49c97155ef280c", kill_on_drop: false }` [INFO] [stdout] 97da01daab306b50e24455fc2f36b2e853a87dc0984da224ba49c97155ef280c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 3359ff1925e3a21be659e4955eb6a4852b4b44e08e1a37ccb4d85bc184097db4 [INFO] running `Command { std: "docker" "start" "-a" "3359ff1925e3a21be659e4955eb6a4852b4b44e08e1a37ccb4d85bc184097db4", kill_on_drop: false }` [INFO] [stderr] warning: unused variable: `c1` [INFO] [stderr] --> src/lib.rs:36:16 [INFO] [stderr] | [INFO] [stderr] 36 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_c1` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c2` [INFO] [stderr] --> src/lib.rs:36:34 [INFO] [stderr] | [INFO] [stderr] 36 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_c2` [INFO] [stderr] [INFO] [stderr] warning: `my_rust_learn_20250812` (lib) generated 2 warnings [INFO] [stderr] warning: `my_rust_learn_20250812` (lib test) generated 2 warnings (2 duplicates) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/my_rust_learn_20250812-53ada559e45c3d65) [INFO] [stdout] [INFO] [stdout] running 4 tests [INFO] [stdout] test c12_grep_lib::tests::search_one_result ... ok [INFO] [stdout] test c12_grep_lib::tests::search_one_result_case_insensitive ... ok [INFO] [stdout] test c13_3_grep_lib_improve::tests::search_one_result_case_insensitive ... ok [INFO] [stdout] test c13_3_grep_lib_improve::tests::search_one_result ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test integration_t1 ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/my_rust_learn_20250812-74a8249d1ee1f345) [INFO] [stderr] Running tests/integration_test.rs (/opt/rustwide/target/debug/deps/integration_test-94240214eeda8258) [INFO] [stderr] Doc-tests my_rust_learn_20250812 [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/c13_3_grep_lib_improve.rs - c13_3_grep_lib_improve::search (line 10) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "3359ff1925e3a21be659e4955eb6a4852b4b44e08e1a37ccb4d85bc184097db4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3359ff1925e3a21be659e4955eb6a4852b4b44e08e1a37ccb4d85bc184097db4", kill_on_drop: false }` [INFO] [stdout] 3359ff1925e3a21be659e4955eb6a4852b4b44e08e1a37ccb4d85bc184097db4