[INFO] updating cached repository https://github.com/ngyihsin/grep
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e1a5db2cfc21f73f733cfe8aa2a76c6eb6b2abec
[INFO] testing ngyihsin/grep against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fngyihsin%2Fgrep" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ngyihsin/grep on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-7/source/Cargo.toml
[INFO] crate git repo https://github.com/ngyihsin/grep already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 999bc21621169507692c977c30feddeca835f7061b5f8412a708cad8478a7f69
[INFO] running `"docker" "start" "-a" "999bc21621169507692c977c30feddeca835f7061b5f8412a708cad8478a7f69"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grep.rs:42:52
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn visit_dirs(query: &String, dir: &Path, cb: &Fn(&String, &DirEntry)) -> io::Result<()> {
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&String, &DirEntry)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/grep.rs:25:11
[INFO] [stderr]    |
[INFO] [stderr] 25 |       let mut p = Config {file_path: file_path, query: query, result: Vec::new()};
[INFO] [stderr]    |           ----^
[INFO] [stderr]    |           |
[INFO] [stderr]    |           help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `"docker" "inspect" "999bc21621169507692c977c30feddeca835f7061b5f8412a708cad8478a7f69"`
[INFO] running `"docker" "rm" "-f" "999bc21621169507692c977c30feddeca835f7061b5f8412a708cad8478a7f69"`
[INFO] [stdout] 999bc21621169507692c977c30feddeca835f7061b5f8412a708cad8478a7f69
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f2ad466ecaa4183c0e02bd0472ace82fa93615d82358fab14b17a168ed830908
[INFO] running `"docker" "start" "-a" "f2ad466ecaa4183c0e02bd0472ace82fa93615d82358fab14b17a168ed830908"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grep.rs:42:52
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn visit_dirs(query: &String, dir: &Path, cb: &Fn(&String, &DirEntry)) -> io::Result<()> {
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&String, &DirEntry)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/grep.rs:25:11
[INFO] [stderr]    |
[INFO] [stderr] 25 |       let mut p = Config {file_path: file_path, query: query, result: Vec::new()};
[INFO] [stderr]    |           ----^
[INFO] [stderr]    |           |
[INFO] [stderr]    |           help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "f2ad466ecaa4183c0e02bd0472ace82fa93615d82358fab14b17a168ed830908"`
[INFO] running `"docker" "rm" "-f" "f2ad466ecaa4183c0e02bd0472ace82fa93615d82358fab14b17a168ed830908"`
[INFO] [stdout] f2ad466ecaa4183c0e02bd0472ace82fa93615d82358fab14b17a168ed830908
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1afb46f209971f055c1272833b353e152fdc7b0b48c92c8ba9bbdca0c417ca2b
[INFO] running `"docker" "start" "-a" "1afb46f209971f055c1272833b353e152fdc7b0b48c92c8ba9bbdca0c417ca2b"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grep.rs:42:52
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn visit_dirs(query: &String, dir: &Path, cb: &Fn(&String, &DirEntry)) -> io::Result<()> {
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&String, &DirEntry)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] 
[INFO] [stderr]   --> src/grep.rs:25:11
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 25 |       let mut p = Config {file_path: file_path, query: query, result: Vec::new()};
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr]    |           ----^
[INFO] [stdout] 
[INFO] [stderr]    |           |
[INFO] [stderr]    |           help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/hello-015ec6386787b591
[INFO] running `"docker" "inspect" "1afb46f209971f055c1272833b353e152fdc7b0b48c92c8ba9bbdca0c417ca2b"`
[INFO] running `"docker" "rm" "-f" "1afb46f209971f055c1272833b353e152fdc7b0b48c92c8ba9bbdca0c417ca2b"`
[INFO] [stdout] 1afb46f209971f055c1272833b353e152fdc7b0b48c92c8ba9bbdca0c417ca2b