[INFO] cloning repository https://github.com/wasuken/rust-my-grep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wasuken/rust-my-grep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwasuken%2Frust-my-grep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwasuken%2Frust-my-grep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a28184f6d3c974e6403bf46748649ba164056357
[INFO] testing wasuken/rust-my-grep against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwasuken%2Frust-my-grep" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wasuken/rust-my-grep on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wasuken/rust-my-grep
[INFO] finished tweaking git repo https://github.com/wasuken/rust-my-grep
[INFO] tweaked toml for git repo https://github.com/wasuken/rust-my-grep written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/wasuken/rust-my-grep already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dc113a110b647e5dd57f6bf443af4e259a41d646d6721d7ad368363e84cd708d
[INFO] running `Command { std: "docker" "start" "-a" "dc113a110b647e5dd57f6bf443af4e259a41d646d6721d7ad368363e84cd708d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc113a110b647e5dd57f6bf443af4e259a41d646d6721d7ad368363e84cd708d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc113a110b647e5dd57f6bf443af4e259a41d646d6721d7ad368363e84cd708d", kill_on_drop: false }`
[INFO] [stdout] dc113a110b647e5dd57f6bf443af4e259a41d646d6721d7ad368363e84cd708d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ec742030721dbc589c7c212346456224eb031e9d79a03b446530c83b6561762
[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" "5ec742030721dbc589c7c212346456224eb031e9d79a03b446530c83b6561762", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling my-grep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:33:47
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn file_grep(reg_str:&str, path: &str) -> Box<Iterator<Item = String>> {
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 33 - fn file_grep(reg_str:&str, path: &str) -> Box<Iterator<Item = String>> {
[INFO] [stdout] 33 + fn file_grep(reg_str:&str, path: &str) -> Box<dyn Iterator<Item = String>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.11s
[INFO] running `Command { std: "docker" "inspect" "5ec742030721dbc589c7c212346456224eb031e9d79a03b446530c83b6561762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ec742030721dbc589c7c212346456224eb031e9d79a03b446530c83b6561762", kill_on_drop: false }`
[INFO] [stdout] 5ec742030721dbc589c7c212346456224eb031e9d79a03b446530c83b6561762
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a7167b3552c4e620b271e638f6f1cc4ae7307cbaec71a452679a5c3a4a740ed
[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" "3a7167b3552c4e620b271e638f6f1cc4ae7307cbaec71a452679a5c3a4a740ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling my-grep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:33:47
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn file_grep(reg_str:&str, path: &str) -> Box<Iterator<Item = String>> {
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 33 - fn file_grep(reg_str:&str, path: &str) -> Box<Iterator<Item = String>> {
[INFO] [stdout] 33 + fn file_grep(reg_str:&str, path: &str) -> Box<dyn Iterator<Item = String>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `Command { std: "docker" "inspect" "3a7167b3552c4e620b271e638f6f1cc4ae7307cbaec71a452679a5c3a4a740ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a7167b3552c4e620b271e638f6f1cc4ae7307cbaec71a452679a5c3a4a740ed", kill_on_drop: false }`
[INFO] [stdout] 3a7167b3552c4e620b271e638f6f1cc4ae7307cbaec71a452679a5c3a4a740ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 84f435d16bf155a86d8796f13270cf2d3ab4821056b344a8a3e36c53f1c16027
[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" "84f435d16bf155a86d8796f13270cf2d3ab4821056b344a8a3e36c53f1c16027", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:33:47
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn file_grep(reg_str:&str, path: &str) -> Box<Iterator<Item = String>> {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 33 - fn file_grep(reg_str:&str, path: &str) -> Box<Iterator<Item = String>> {
[INFO] [stderr] 33 + fn file_grep(reg_str:&str, path: &str) -> Box<dyn Iterator<Item = String>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `my-grep` (bin "my-grep" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/my_grep-ef1893ddea104064)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test file_grep_test ... 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] running `Command { std: "docker" "inspect" "84f435d16bf155a86d8796f13270cf2d3ab4821056b344a8a3e36c53f1c16027", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84f435d16bf155a86d8796f13270cf2d3ab4821056b344a8a3e36c53f1c16027", kill_on_drop: false }`
[INFO] [stdout] 84f435d16bf155a86d8796f13270cf2d3ab4821056b344a8a3e36c53f1c16027