[INFO] cloning repository https://github.com/ngyihsin/grep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ngyihsin/grep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fngyihsin%2Fgrep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fngyihsin%2Fgrep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e1a5db2cfc21f73f733cfe8aa2a76c6eb6b2abec
[INFO] checking ngyihsin/grep against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fngyihsin%2Fgrep" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ngyihsin/grep on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ngyihsin/grep
[INFO] finished tweaking git repo https://github.com/ngyihsin/grep
[INFO] tweaked toml for git repo https://github.com/ngyihsin/grep written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ngyihsin/grep already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4e01517bee4dbceef333804adaa61db4de2f5e753de959d410334f168622125
[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" "f4e01517bee4dbceef333804adaa61db4de2f5e753de959d410334f168622125", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4e01517bee4dbceef333804adaa61db4de2f5e753de959d410334f168622125", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4e01517bee4dbceef333804adaa61db4de2f5e753de959d410334f168622125", kill_on_drop: false }`
[INFO] [stdout] f4e01517bee4dbceef333804adaa61db4de2f5e753de959d410334f168622125
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2163083cad32dcc72eea5d61692986e4b4581f0301dac391f8bde5f6a51f775f
[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" "2163083cad32dcc72eea5d61692986e4b4581f0301dac391f8bde5f6a51f775f", kill_on_drop: false }`
[INFO] [stderr]     Checking hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/grep.rs:42:52
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn visit_dirs(query: &String, dir: &Path, cb: &Fn(&String, &DirEntry)) -> io::Result<()> {
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&String, &DirEntry)`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/grep.rs:42:52
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn visit_dirs(query: &String, dir: &Path, cb: &Fn(&String, &DirEntry)) -> io::Result<()> {
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&String, &DirEntry)`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/grep.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 |       let mut p = Config {file_path: file_path, query: query, result: Vec::new()};
[INFO] [stdout]    |           ----^
[INFO] [stdout]    |           |
[INFO] [stdout]    |           help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/grep.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 |       let mut p = Config {file_path: file_path, query: query, result: Vec::new()};
[INFO] [stdout]    |           ----^
[INFO] [stdout]    |           |
[INFO] [stdout]    |           help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "2163083cad32dcc72eea5d61692986e4b4581f0301dac391f8bde5f6a51f775f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2163083cad32dcc72eea5d61692986e4b4581f0301dac391f8bde5f6a51f775f", kill_on_drop: false }`
[INFO] [stdout] 2163083cad32dcc72eea5d61692986e4b4581f0301dac391f8bde5f6a51f775f