[INFO] cloning repository https://github.com/kaiusl/codecrafters-grep-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kaiusl/codecrafters-grep-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaiusl%2Fcodecrafters-grep-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaiusl%2Fcodecrafters-grep-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c972ce434427e5f32004651b3af5ed21ab328ac8
[INFO] testing kaiusl/codecrafters-grep-rust against master#552a959051cebf8f88a8f558399baf733bec9ce0 for pr-136932
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaiusl%2Fcodecrafters-grep-rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kaiusl/codecrafters-grep-rust on toolchain 552a959051cebf8f88a8f558399baf733bec9ce0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kaiusl/codecrafters-grep-rust
[INFO] finished tweaking git repo https://github.com/kaiusl/codecrafters-grep-rust
[INFO] tweaked toml for git repo https://github.com/kaiusl/codecrafters-grep-rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kaiusl/codecrafters-grep-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" "+552a959051cebf8f88a8f558399baf733bec9ce0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0e36e642f54d334c03479736013ba8f6472fff5c1cb174d911d5a77d8c18390
[INFO] running `Command { std: "docker" "start" "-a" "e0e36e642f54d334c03479736013ba8f6472fff5c1cb174d911d5a77d8c18390", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0e36e642f54d334c03479736013ba8f6472fff5c1cb174d911d5a77d8c18390", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0e36e642f54d334c03479736013ba8f6472fff5c1cb174d911d5a77d8c18390", kill_on_drop: false }`
[INFO] [stdout] e0e36e642f54d334c03479736013ba8f6472fff5c1cb174d911d5a77d8c18390
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99338551980fba7d4670e5ef1897aef33c42c5e5b7f8d40485aaa92ad4a7d17c
[INFO] running `Command { std: "docker" "start" "-a" "99338551980fba7d4670e5ef1897aef33c42c5e5b7f8d40485aaa92ad4a7d17c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling anyhow v1.0.86
[INFO] [stderr]    Compiling thiserror v1.0.63
[INFO] [stderr]    Compiling bytes v1.7.1
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.75
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]    Compiling codecrafters-grep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `is_fail` is never used
[INFO] [stdout]    --> src/main.rs:236:8
[INFO] [stdout]     |
[INFO] [stdout] 223 | impl<'a> MatchResult<'a> {
[INFO] [stdout]     | ------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 236 |     fn is_fail(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.03s
[INFO] running `Command { std: "docker" "inspect" "99338551980fba7d4670e5ef1897aef33c42c5e5b7f8d40485aaa92ad4a7d17c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99338551980fba7d4670e5ef1897aef33c42c5e5b7f8d40485aaa92ad4a7d17c", kill_on_drop: false }`
[INFO] [stdout] 99338551980fba7d4670e5ef1897aef33c42c5e5b7f8d40485aaa92ad4a7d17c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2bd972fbf8db05b9b45d6b238851a1ba0627728d46478d1a2489e1c0c6aa405f
[INFO] running `Command { std: "docker" "start" "-a" "2bd972fbf8db05b9b45d6b238851a1ba0627728d46478d1a2489e1c0c6aa405f", kill_on_drop: false }`
[INFO] [stderr]    Compiling codecrafters-grep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `is_fail` is never used
[INFO] [stdout]    --> src/main.rs:236:8
[INFO] [stdout]     |
[INFO] [stdout] 223 | impl<'a> MatchResult<'a> {
[INFO] [stdout]     | ------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 236 |     fn is_fail(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "2bd972fbf8db05b9b45d6b238851a1ba0627728d46478d1a2489e1c0c6aa405f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bd972fbf8db05b9b45d6b238851a1ba0627728d46478d1a2489e1c0c6aa405f", kill_on_drop: false }`
[INFO] [stdout] 2bd972fbf8db05b9b45d6b238851a1ba0627728d46478d1a2489e1c0c6aa405f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d427052a307b1239a3500a4fe10f30b9c2d8c579aa7648adbfe446f5f4854507
[INFO] running `Command { std: "docker" "start" "-a" "d427052a307b1239a3500a4fe10f30b9c2d8c579aa7648adbfe446f5f4854507", kill_on_drop: false }`
[INFO] [stderr] warning: method `is_fail` is never used
[INFO] [stderr]    --> src/main.rs:236:8
[INFO] [stderr]     |
[INFO] [stderr] 223 | impl<'a> MatchResult<'a> {
[INFO] [stderr]     | ------------------------ method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 236 |     fn is_fail(&self) -> bool {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `codecrafters-grep` (bin "codecrafters-grep" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/codecrafters_grep-62ed25372a8ca178)
[INFO] [stdout] 
[INFO] [stdout] running 25 tests
[INFO] [stdout] test tests::test_nested_group ... ok
[INFO] [stdout] test tests::test_at_start ... ok
[INFO] [stdout] test tests::test_char_digit ... ok
[INFO] [stdout] test tests::test_back_ref ... ok
[INFO] [stdout] test tests::test_back_ref_issue ... ok
[INFO] [stdout] test tests::test_nested_back_refs2 ... ok
[INFO] [stdout] test tests::test_digit ... ok
[INFO] [stdout] test tests::test_alphanumeric ... ok
[INFO] [stdout] test tests::test_group ... ok
[INFO] [stdout] test tests::test_neg_char_group ... ok
[INFO] [stdout] test tests::test_nested_groups ... ok
[INFO] [stdout] test tests::test_one_or_more ... ok
[INFO] [stdout] test tests::test_one_or_more_not_full ... ok
[INFO] [stdout] test tests::test_alteration_multi ... ok
[INFO] [stdout] test tests::test_pos_char_group ... ok
[INFO] [stdout] test tests::test_at_end ... ok
[INFO] [stdout] test tests::test_nested_back_refs ... ok
[INFO] [stdout] test tests::test_single_char ... ok
[INFO] [stdout] test tests::test_zero_or_one ... ok
[INFO] [stdout] test tests::test_partial_match ... ok
[INFO] [stdout] test tests::test_alteration_w_groups ... ok
[INFO] [stdout] test tests::test_wildcard ... ok
[INFO] [stdout] test tests::test_at_start_end ... ok
[INFO] [stdout] test tests::test_alteration_single ... ok
[INFO] [stdout] test tests::test_repeated_groups - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 25 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d427052a307b1239a3500a4fe10f30b9c2d8c579aa7648adbfe446f5f4854507", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d427052a307b1239a3500a4fe10f30b9c2d8c579aa7648adbfe446f5f4854507", kill_on_drop: false }`
[INFO] [stdout] d427052a307b1239a3500a4fe10f30b9c2d8c579aa7648adbfe446f5f4854507