[INFO] updating cached repository https://github.com/kapitanov/rust-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] 23d6a3d98837751c974061b13651432753ed0436
[INFO] checking kapitanov/rust-grep against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkapitanov%2Frust-grep" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kapitanov/rust-grep on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/kapitanov/rust-grep
[INFO] finished tweaking git repo https://github.com/kapitanov/rust-grep
[INFO] tweaked toml for git repo https://github.com/kapitanov/rust-grep written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/kapitanov/rust-grep already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9969c5b424ef0fbcbf0012fc5aad819d818cee1cb0f3aac167742ce9a6fd3a75
[INFO] running `"docker" "start" "-a" "9969c5b424ef0fbcbf0012fc5aad819d818cee1cb0f3aac167742ce9a6fd3a75"`
[INFO] [stderr]     Checking rustgrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grep.rs:17:72
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn try_create<'a>(&self, s: &str, ignore_case: bool) -> Result<Box<Pattern>, String>;
[INFO] [stderr]    |                                                                        ^^^^^^^ help: use `dyn`: `dyn Pattern`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grep.rs:21:23
[INFO] [stderr]    |
[INFO] [stderr] 21 |     patterns: Vec<Box<Pattern>>,
[INFO] [stderr]    |                       ^^^^^^^ help: use `dyn`: `dyn Pattern`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grep.rs:31:35
[INFO] [stderr]    |
[INFO] [stderr] 31 |         let mut patterns: Vec<Box<Pattern>> = vec![];
[INFO] [stderr]    |                                   ^^^^^^^ help: use `dyn`: `dyn Pattern`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/grep.rs:129:30
[INFO] [stderr]     |
[INFO] [stderr] 129 |     fn instance<'a>() -> &'a PatternFactory {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn PatternFactory`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/grep.rs:139:72
[INFO] [stderr]     |
[INFO] [stderr] 139 |     fn try_create<'a>(&self, s: &str, ignore_case: bool) -> Result<Box<Pattern>, String> {
[INFO] [stderr]     |                                                                        ^^^^^^^ help: use `dyn`: `dyn Pattern`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/grep.rs:167:30
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn instance<'a>() -> &'a PatternFactory {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn PatternFactory`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/grep.rs:177:72
[INFO] [stderr]     |
[INFO] [stderr] 177 |     fn try_create<'a>(&self, s: &str, ignore_case: bool) -> Result<Box<Pattern>, String> {
[INFO] [stderr]     |                                                                        ^^^^^^^ help: use `dyn`: `dyn Pattern`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grep.rs:17:72
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn try_create<'a>(&self, s: &str, ignore_case: bool) -> Result<Box<Pattern>, String>;
[INFO] [stderr]    |                                                                        ^^^^^^^ help: use `dyn`: `dyn Pattern`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grep.rs:21:23
[INFO] [stderr]    |
[INFO] [stderr] 21 |     patterns: Vec<Box<Pattern>>,
[INFO] [stderr]    |                       ^^^^^^^ help: use `dyn`: `dyn Pattern`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grep.rs:31:35
[INFO] [stderr]    |
[INFO] [stderr] 31 |         let mut patterns: Vec<Box<Pattern>> = vec![];
[INFO] [stderr]    |                                   ^^^^^^^ help: use `dyn`: `dyn Pattern`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/grep.rs:129:30
[INFO] [stderr]     |
[INFO] [stderr] 129 |     fn instance<'a>() -> &'a PatternFactory {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn PatternFactory`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/grep.rs:139:72
[INFO] [stderr]     |
[INFO] [stderr] 139 |     fn try_create<'a>(&self, s: &str, ignore_case: bool) -> Result<Box<Pattern>, String> {
[INFO] [stderr]     |                                                                        ^^^^^^^ help: use `dyn`: `dyn Pattern`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/grep.rs:167:30
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn instance<'a>() -> &'a PatternFactory {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn PatternFactory`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/grep.rs:177:72
[INFO] [stderr]     |
[INFO] [stderr] 177 |     fn try_create<'a>(&self, s: &str, ignore_case: bool) -> Result<Box<Pattern>, String> {
[INFO] [stderr]     |                                                                        ^^^^^^^ help: use `dyn`: `dyn Pattern`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.17s
[INFO] running `"docker" "inspect" "9969c5b424ef0fbcbf0012fc5aad819d818cee1cb0f3aac167742ce9a6fd3a75"`
[INFO] running `"docker" "rm" "-f" "9969c5b424ef0fbcbf0012fc5aad819d818cee1cb0f3aac167742ce9a6fd3a75"`
[INFO] [stdout] 9969c5b424ef0fbcbf0012fc5aad819d818cee1cb0f3aac167742ce9a6fd3a75